How do energy saving windows work? Heat-saving glass. What is an energy-saving glass unit - advantages and disadvantages Heat saving for Euro-windows

Hello everyone!

Received an e-mail from one of the readers with a question about energy-saving double-glazed windows. They have in kindergarten replacement of windows is planned, they decide which is better to install.

Since in the children's room all year round cool, the parents want to make the environment more comfortable.

First of all, he was interested in the ratio of price and quality, that is, how much better such windows retain heat and how much higher their price is.

I am writing about all this especially for him and other enterprising parents who want to give their children all the best.

Welcome!

Energy-efficient double-glazed windows are the number one choice among consumers today.

They represent a certain type of glazing that perfectly retains heat in the room.

Unlike conventional glass units, insulating glass units with energy-saving glass are made of special glass, on top of which a certain low-emission coating is applied.

This allows the solar energy with short waves to pass unhindered directly into the interior of the room, and the heat fluxes tending outward to be reflected freely, thus retaining heat.

There are several types of heat-saving windows:

Energy-saving double-glazed windows with argon. They contain a special gas that creates a certain pressure inside the system and prevents heat from escaping to the outside.
Energy-saving single-chamber double-glazed window. Has one camera.
Energy-saving double-glazed window. Presented by two cameras, respectively.

Production implies the use of several types of glasses in the process of their creation:

I-glass with improved energy-saving effect, absolutely transparent;
K-glass with a metal oxide on its surface has a lower degree of transparency.

Depends on the type of glass used in the process of their manufacture and the number of chambers. They are determined by the type of glass unit and the resistance to heat transfer.

Drawing an analogy with a conventional single-chamber window, it can be noted:

- that the level of its resistance to heat transfer is - 0.32,

- energy-saving single-chamber - 0.59,

- two-chamber conventional - 0.47,

- two-chamber energy-saving - 0.64.

Thus, we can say that, unlike the usual one, the energy saving package is 1.5 - 2 times warmer.

Before checking an energy-saving glass unit, it is necessary to check the presence of such an important indicator as a marking, which indicates the type of glass used, the number of chambers and the level of energy saving.

This required condition indicating their high level, quality, practicality and durability of performance characteristics.

Note!

Single-chamber or double-chamber bag with energy saving function, saves about 38 -40% more heat than conventional metal plastic windows at the same cost!

Many manufacturers, unlike us, offer their customers deliberately inflated prices. Our price is the personification of democracy and acceptability for various categories of the population.

Or you can send a request for calculation to our managers and they will call you back and announce the cost of your window.

According to research, such windows pay off in 1 season !!! Then you get net savings for the rest of your time.

The energy-saving glass unit purchased from us is distinguished by:

high quality;
reliability;
practicality;
aesthetics;
a high degree of functionality;
excellent heat-saving properties;
good fittings from the world's leading manufacturers.

We will provide you with a high level of service, as much as possible fast production windows and long term warranty service.

source: okna-region23.ru

So modern manufacturers They try in every possible way to make their window as energy-efficient as possible.

For this, double-glazed windows with energy-saving glass are used in the windows - i-glass.

Energy saving characteristics

The characteristic of energy saving is the emissivity of glass.

Emissivity (emission) is understood as the ability of a glass surface to reflect long-wavelength thermal radiation invisible to the human eye, the wavelength of which is less than 16,000 (Nm).

The surface emitter (E) determines the emissivity of glass (for ordinary glass it is> 0.83, and the emissivity of selective glasses is less than 0.04) and, therefore, the ability to "reflect" back into the room thermal radiation.

The reason for the appearance of radiation lies in the movement of free electrons of atoms located on the surface of the glass, and the density of moving electrons.

Useful advice!

The surface emissivity (E) of ordinary glass is> 0.83, and the emissivity of selective glasses is less than 0.04

Not all metals are well conductive electricity, possess the property of reflecting long-wave thermal radiation. Consequently, the lower the emitter, the less loss heat. In this case, glass with an optical coating having an emitter value of E = 0.004 reflects back into the room over 90% of the thermal energy leaving through the window.

That is why most of the window manufacturers in Russia are currently using energy-saving double-glazed windows and the share of their use on the market is constantly growing.

Difficulties with transportation and work with i-glasses associated with their design features, led to the fact that in the world, as a rule, only large, specialized firms are engaged in the production of energy-saving windows.

Energy-saving windows with i-glass are also offered by the company "Okna-Etalon". By purchasing it, you get the highest possible efficiency from the money spent!

i-glass is a low-emission glass with a multilayer coating (including silver) applied by plasma spraying in a vacuum.

This is a "soft" coating.

The sheet with such a coating should only face the inside of the glass unit. I-glass is produced by vacuum deposition and is a three-layer (or more) structure of alternating layers of silver dielectric (BiO, AlN, TiO2, etc.).

The application technology requires the use of high-vacuum equipment with a magnetron sputtering system. Low-emission i-glass during the heating season "returns" to the apartment up to 90% of the heat waves emitted by heating devices.

In summer, it reflects the thermal, infrared (IR) part of the solar radiation. As a result, the room becomes warmer in winter and cooler in summer.

I-glass has improved thermal performance. For example, for outside temperature-26 degrees and room temperature +20, the temperature on the surface of the window inside the room will be +5 degrees for an ordinary double-glazed unit, and +14 degrees for an energy-saving one.

Advantages of using insulating glass units with energy-saving I-glass:

i-glass reflects long-wave heat rays towards their emitter (that is, in winter towards an apartment where heating devices work, and in summer towards a street where stones, asphalt, etc. heated by the sun are located), which significantly reduces heating costs in winter and air conditioning in summer. In other words, the coating leaves heat where there is more.
The thermal insulation capacity is significantly higher compared to a two-chamber glass unit. Thus, in any climatic zone thermal comfort in the room is achieved by using double-glazed windows with energy-saving glass. The effect - "blowing from the window" is eliminated.
The temperature on the surface of the glass unit is higher than on the surface of ordinary glass, which reduces the likelihood of condensation on the glass.
i-glass prevents fading of upholstery and interior items. Moreover, the transparency is similar to that of ordinary glass.

Compared to ordinary glass, i-glass can provide truly incredible savings.

On average, a private house has about 4 windows, with total area about 9 sq. m. The total savings for the heating season will be: 2070 kW, which is equivalent to 1.5 tons coal for the heating period and will save about 6,000 rubles in the first heating season.

source: www.okna-etalon.ru

When choosing new windows, the buyer first of all looks at whether they are made of plastic or wood, not taking into account the fact that this plays a small role in energy saving, because the materials framing the translucent structure make up an insignificant part in the window.

But the skylights, which make up the bulk of the area of the glass unit, account for more than 40% of all heat losses of the building. The use of ENERGY-SAVING GLASS will help to keep the heat as much as possible, preventing it from leaving the room through the window.

Energy-saving double-glazed windows have a number of advantages not only over single-chamber double-glazed windows made of ordinary glass, but also over two-chamber double-glazed windows, consisting of 3 of the same glass. Why are energy-efficient insulating glass units better compared to double-glazed insulating glass units made of three conventional glass panes?

The power package provides 30% higher resistance to heat transfer - about 0.61 m2K / W;
A single-chamber double-glazed unit is one third lighter than the commonly used double-glazed unit, i.e. is one third less material-intensive;
Such a glass unit is more acceptable for our climate;
In an energy-saving glass unit, a significant reduction in the load on fasteners and hinges helps to reduce their wear and, as a result, increases the durability of the frame structure;
A double-glazed unit with energy-saving glass is actually cheaper than a two-chamber unit by 20 - 30%;
The energy package significantly limits the passage of ultraviolet rays into the room, which prevents the fading of furniture and window curtains.

Often, when buying windows, we allow ourselves to save money, choosing cheap, "old" technologies that are not improved and not adapted to our weather conditions.

We gave an example of a technology that is currently the most suitable for the buyer in terms of price-quality ratio.

Our company successfully works with this technology and in its production uses only high-quality glass "ClimaGuard N" "ClimaGuard Solar", "Sun-Guard High Performance" from the world famous company "GUARDIAN" USA, which has its glass factories all over the world.

One of the concerns of consumers is the question of defining glass with an energy-efficient coating.

Useful advice!

One of the most popular and affordable testing methods is to hold fire to glass, the color of the reflection of which will change from yellow to red.

A red flame indicates an energy saving coating. This method is optional but not basic.

The most reliable and professional way to determine an energy-saving coating in glass is a special electronic device that detects both the presence of the coating itself and the side on which it is applied, which cannot be done using the above method.

What kind of glass "ClimaGuard N"?

Heat-saving glass with silver dusting;
Effectively retains heat indoors in winter;
Reduces heat loss;
Increases the temperature of the inner glass by 6 degrees (center temperature, calculated value);

Produced in Germany, Luxembourg, Russia, Poland, Hungary. The technology of vacuum magnetron sputtering allows the deposition of transparent layers of silver atoms and silicon nitride (to protect silver).

Note!

With the help of silver on glass, we get the same effect in the room as in a thermos - the heat stays inside, and does not go into the atmosphere. Heat loss when installing such glass is reduced by 15 - 20%.

What is ClimaGuard Solar glass?

It is a multifunctional glass that protects against heat in summer and cold in winter. Super-thin layers of metals applied to the glass make it possible to keep it as transparent as possible.

A special coating of silver and other metals creates the effect of a transparent filter that allows visible light to pass through, but significantly reduces the penetration of solar heat into the house in summer and heat leakage in winter.

The silver coating on ClimaGuard Solar glass reflects long-wave thermal radiation, for example, from heating devices, into the room, preventing it from escaping outside.

Glass "ClimaGuard Solar" provides effective protection from the sun, which helps to significantly reduce the cost of air conditioning (solar factor 42%);
A high coefficient of resistance to heat transfer (0.65 m2K / W) allows you to reduce the cost of heating a room in the cold season (heat savings - up to 78%);
Visually transparent glass (no color distortion);
ClimaGuard Solar glass is preferably used in projects where energy saving, sun protection and good daylight premises.

What kind of "Sun-Guard High Performance" glass?

Peculiarities:

Sun protection properties. Multifunctional glass "Sun-Guard HP" Capable of filtering the sun's rays by wavelength. Most of the heat radiation is reflected (blocking solar (thermal) radiation), and natural light enters the room with little or no obstruction.
Thermal insulation properties. Multifunctional glass "Sun-Guard HP" provides high thermal insulation (low coefficient of thermal conductivity) in a glass unit, where the second glass is ordinary transparent.
A wide range of shades and colors.
Benefits for end users. The use of multifunctional glass "Sun-Guard HP" reduces the cost of air conditioning and heating of the building without loss of illumination and color rendering.

Improved thermal insulation increases the surface temperature of the glass, which reduces the circulation of cold air and the likelihood of condensation on the inner glass in cold climates, and also reduces condensation on the outer glass of the façade in hot and humid climates.

You can choose any design, but we always remind our customers that when the right choice You will not only avoid heat loss and save heating costs, but also drastically reduce the penetration of annoying noise from the street.

The most important thing is to ensure the durability of the structure with your choice while preserving all its original properties.

source: www.shklyarus.by

Today, our country maintains a centralized system of heat and power supply. Mostly this is a heat supply system, in which about 65% is the share of CHP.

The rest of the share is accounted for by boiler houses and autonomous systems heating.

Tariffs for heat and energy resources have a tendency of constant growth, and therefore efficient work heating networks and a significant reduction in heat loss is considered as a strategic task.

In this regard, the problem of energy conservation has become one of the most urgent for our country. That is why manufacturers of plastic windows decide the issue of keeping warm in the room by using energy-saving glasses.

It should be noted that the heat-shielding and energy-saving functions of the window are of great importance for the end user, because through the windows, depending on the type of house, heat losses occur from 37% to 56% (apartments located at the end of the house).

Areas with a red background are “hot” areas through which heat is escaping most intensively:

walls ~ 30%
roof ~ 14%
floor ~ 12%
windows ~ 44%

100% of the living space of 4 5-storey buildings accounts for approximately 12-16% window openings through which heat loss in modern living quarters averages about 40%.

Useful advice!

Heat loss through old wooden windows is about the same as heat loss through walls. It turns out that heat losses occur through the windows through cracks, leaks and during ventilation of the premises.

German experience

So in Germany, in order to reduce heat loss, a massive reconstruction of buildings was carried out, namely walls, facades and replacement of windows.

After carrying out an analysis associated with calculations to reduce heat loss, the result showed the following:

- heat loss through the walls was reduced by 73%,

- thermal radiation through windows by 62%,

- heat loss during air exchange by 50%.

Similar calculations were carried out in our country for the relative reduction in heat loss:

if you replace existing wooden windows for plastic, then in terms of the average cost of thermal energy from a CHP in middle lane Russia, the savings for an average apartment will be about 3 thousand rubles for the heating season. Of course, the figures are approximate, and the tariffs for heat carriers differ even within the same region.

Here are some more examples: in Moscow during reconstruction panel houses simultaneously with the insulation of the facades, the replacement of windows is also carried out. The energy saving program in Moscow is planning to install windows with energy-saving double-glazed windows.

This is beneficial because it solves the problem of eliminating significant heat losses. At the same time, the appearance of the facades of houses is preserved after the reconstruction as a result of the unauthorized installation of windows by residents.

In the city of Chelyabinsk at the end of 2009, a project was carried out to install funds individual registration heat in two multi-apartment panel buildings.

The results showed the residents' desire to save money, since this immediately began to affect the bills for heat carriers. They began to regulate the temperature with a thermostat on the battery, and not with a window.

This means that less heat was emitted from the windows into the atmosphere.

For residents of private houses and cottages, the following example can be given:

- experts have calculated that the windows country house medium-sized ones, equipped with double-glazed windows with energy-saving glass, save as much heat energy during the heating season as 300 kg of liquid fuel such as fuel oil or diesel fuel gives.

So what are energy-efficient glass and how do they help keep the home warm? What is the difference between energy-saving glass and simple glass?

To make it clear for an ordinary end consumer - on one side of the surface of energy-saving glass, a coating that is invisible to our eyes is applied, which is a kind of filter.

The coating prevents the release of long-wave thermal radiation (infrared waves) from heating appliances and reflects it into the room. Thus, the heat is retained and does not escape to the outside.

Note!

Energy saving glass has a thickness metal coating only a few tens of nanometers.

It is no different from ordinary glass and is absolutely transparent to our eyes. Energy-saving glass is used in the manufacture of double-glazed windows, since their operation requires complete tightness.

For the production of ordinary sheet glass, two methods are used: vertical - by the drawing method and horizontal - on the molten metal.

When using the horizontal method, so-called float glass is obtained, which has excellent optical properties and high light transmittance. So it is used for the production of energy-saving glasses. On the polished surface of float glass, a coating of non-ferrous metals (mainly silver) or their oxides is applied by spraying.

Due to the phenomena of electrical conductivity and interference, such glass gains the ability to reflect heat waves in the infrared range and, thereby, reduce heat loss in the room.

Glass with such properties is also called heat-saving, low-emission, and selective.

The first definition speaks for itself.

The second definition is related to such a physical concept as surface emissivity or emission. Emission of energy-saving glass is an order of magnitude less than ordinary glass, which is why it is called low-emission glass.

The term "selective" means that our glass selectively transmits light and heat waves, and it turns out that in the summer heat, the use of energy-saving glasses will protect your home from infrared penetration. sun rays, capable of quickly heating the air in the room, and in the cold season, on the contrary, heat will be reflected from the heating devices into the room.

This means that in any weather the microclimate that is optimal for comfortable living will remain in the house. In regions with hot climates, it is recommended to use darkening low-emissivity glasses.

They have an even lower degree of transmission of sunlight, protecting the premises from the heat brought by the sun in the summer. Such sun-protection glass can have a different tint color: bronze, gray, green, pink.

Currently, two types of coatings are used for energy-saving glasses:

soft (Double Low-E), the so-called I-glass;
hard (Low-E) or K-glass.

Energy-saving hard-coated glass (K-glass) is produced by applying a thin layer of oxides of some metals on the still hot surface of float glass directly during its production.

A thin layer of metal oxides InSnO2 is created on its surface by a chemical reaction at a high temperature (pyrolysis method), which is transparent and at the same time has electrical conductivity.

It is known that electrical conductivity is directly related to the emissivity (E) of the surface. The emissivity of plain glass is 0.84, while that of K-glass is usually about 0.2.

This coating is particularly durable and therefore it is called hard.

K-glass, significantly reducing heat loss, improves the thermal insulation of the room and thereby reduces the cost of heating it. In appearance, it does not differ from ordinary glass and has the same high light transmission. K-glass as a part of a double-glazed window is turned by a low-emission coating towards the room.

It does not transmit long-wavelength thermal radiation from heating devices through the interwindow space.

Note!

Energy-saving glass with a soft coating (I-glass) is produced using a more sophisticated technology.

I-glass is a high-quality glass with a low-emission coating applied to one glass surface under vacuum conditions, by the method of cathodic sputtering in a magnetic field of metal-containing compounds with specified selective properties.

The float glass is coated with a layer of silver and titanium oxide as a secondary coating. It possesses the best characteristics in comparison with K-glass, in particular, higher light transmittance and lower emissivity.

It should be borne in mind that I-glass has low abrasion resistance (it can be easily scratched).

The use of double-glazed windows, which include I-glass, allows not only to reduce energy consumption for heating a room, but also to significantly increase its comfort.

However, due to the fact that its energy-saving coating is always located inside the glass unit, on operational characteristics this disadvantage does not affect.

So, what is it - an energy-saving glass unit? First, let's find out what a regular package is.

The product is a system consisting of two or three sheets of glass connected along a contour so that a hermetically sealed chamber with a layer of dried air is formed between them.

That is, double-glazed windows can be divided into three types by design:

SPOR - single-chamber with a framing frame (the width of the framing frame shelf should be 15 (± 1) mm and the distance between the glasses can be 6, 8, 9, 10, 12, 15 mm);
SPO - single-chamber (the distance between the glasses can be 6, 8, 9, 10, 12, 15, 16 mm);
SPD - two-chamber (the distance between the glasses can be 6, 8, 9, 10, 12 mm).

There are double-glazed windows filled with air and noble gases (argon, krypton).

Thus, an energy-saving glass unit is a product that includes low-emission glass.

To understand how low-emissivity glass works, it is necessary to understand the meaning of the term “emissivity”.

Emissivity is a measure of a surface's ability to absorb or lose heat (E). It is customary to assess the emissivity on a scale from "0" to "1" (from 0 to 100%).

A large value on the scale indicates that the surface is a good heat emitter (it loses heat quickly). A low value on the scale indicates that the surface is a poor heat emitter (it loses heat slowly).

Surface emissivity of ordinary glass = 0.9. The emissivity of the surface of the glass with low emission coating = 0.17. These coefficients show that ordinary glass has a high emissivity of 0.9 and therefore is a poor insulator because it quickly loses heat.

Low emissivity glass has an emissivity of 0.17, a very low value, it loses heat slowly, therefore it is a good insulator.

Advantages of an energy-saving glass unit

Effectively retains heat indoors in winter up to 60% (maximum energy saving characteristics)
Solar protection in summer (reflects up to 34% of solar heat)
The likelihood of condensation on the windows decreases (the temperature in the window area rises)
Heating costs are reduced (electricity or gas consumption in winter is reduced by reducing heat loss)
Improves the microclimate (which ensures, for example, the optimal development of indoor plants)
Cleans the room from germs (due to the transmission of ultraviolet radiation)
Visually transparent glass inside (no color distortion)
Protects interior details from fading

Comparison of the thermal characteristics of windows with energy-saving glass and with conventional double-glazed windows shows that single-chamber double-glazed window with energy-saving glass is more efficient than double-glazed windows.

Window manufacturers give a comparison at a temperature outside the window of -26 degrees and an air temperature inside the room + 20 degrees:

Regular double-glazed windows. The temperature on the inner glass is + 5 degrees.
Double-glazed unit with K glass. The temperature on the inner glass is + 11 degrees.
Double-glazed unit with I-glass. The temperature on the inner glass is + 14 degrees.

How to determine the presence of an energy-efficient glass unit?

If you bring a lighter or a candle to the glass unit and consider the reflection of the flame.

Then on ordinary glass both flame reflections will be the same - yellow, and on energy-saving glass one flame will be yellow, and the second flame will have a pronounced red tint.

Energy saving glass

They are both hard and soft coated and are widely used in many countries.

Their production technology is rather complicated and requires high qualifications from manufacturers. Therefore, in the world there are only a few large companies producing energy-saving glass in large volumes.

Until recently, the bulk of high-quality glass was imported in Russia. After the completion of the construction of the new Glaverbel production complex in the Klinsky district of the Moscow region, Russians were able to use domestic energy-saving glass in the glazing of their homes and offices.

So how better in winter keep your home warm with the greatest efficiency? The advantages of insulating glass units with energy-saving glass are obvious here. And their use, especially in the construction of private houses and cottages, can be very beneficial, provided modern systems heating and ventilation.

For the production of energy-efficient windows in the IZOLUX company, manufacturers can order heat-saving insulating glass units ClimaGuard ® 4 mm thick with a protective layer based on silver, as well as packages with I-glass 4 and 6 mm. Both are filled with argon.

Advantages of heat-saving double-glazed windows

Durability and reliabilityWindow systems with heat-insulating glass units are lighter and less load on the fittings, extending its service life. Low-emission spraying is maintained throughout the entire operating time of the system.

Effective thermal protection in winterThe design insulates heat much better than the standard one, although it weighs less. A package with one chamber of two energy-efficient glasses is 1.5 times lighter than a standard one and retains 25% more heat in the room.

Comfortable microclimate in summerIn the summer heat, the packets reflect heat waves outward and keep the room pleasantly cool.

There are two sources of heat in the room. The first is solar radiation entering the windows from the outside - ultraviolet, visible light and short IR waves; the second - heated objects and heating devices in the room, which emit long infrared waves. Help prevent heat loss I-glass with low-emission coating reflecting infrared radiation into the room. The ion-coated glass is installed first so that the sputtering is located inside the glass unit. Silver ions on the surface of the heat-efficient bag create a mirror effect. In contact with heat waves from heating devices, they direct the radiation back. As a result, the heating intensity can be reduced by up to 50%.

Energy packagesClimaGuard ®Solar multifunctional. They solve two problems: in winter they keep heat in the room and in summer they protect the room from the sun. One layer of their coating reflects heat waves from heated surfaces into the room, the other retains up to 60% of solar energy. Silver coating does not violate the transparency and optical properties of glass, helps to save on heat supply, eliminates fogging of windows.

Application and prices for heat-saving double-glazed windows

We offer high quality, affordable designs. All of them are certified and meet the requirements of GOST. Thermal packs are popular in glazing:

cottages,
city apartments,
shopping and business centers,
medical institutions.

The cost of such products depends on the choice of their modification - with I-glass or multifunctional ClimaGuard ®, on the area of the glass filling, the thickness of the glass. The energy-saving glass bag pays for itself quickly - it saves up to 40% more heat than a standard equivalent.

Heat-saving double-glazed windows are double-glazed windows using heat-saving glasses: K-glass and i-glass(coated glass)

K-glass (hard coated glass)

A pyrolytic process for the production of float glass, in which metal oxides are deposited during the manufacturing process (i.e. on hot glass). The coating of this glass is hard, durable, has a neutral color, and has low emission properties.

Advantages:

good thermal insulation properties (Ro = 0.58 m2K / W)
reduction of heat loss in winter
high light transmission
neutral coloration in transmitted and reflected light
hard and durable pyrolytic coating
can be subjected to the following processing: bending, lamination and hardening

i-glass (soft coated glass)

High-quality glass with a low-emission coating applied to one glass surface using vacuum-magnetron sputtering. The coating has the properties of a light filter, transparent to the human eye, good transmission sunlight and reflects heat radiation back into the room. It consists of several thin layers containing silver, the choice of which depends on the required characteristics of the glazing: emissivity, light transmission, as well as optical properties - removal of unwanted reflection.

Advantages:

maximum energy saving characteristics
has high light transmission
has low reflectivity
reduction of internal condensation

Heat-saving glass

	Hard cover	Soft cover
Emissivity (emissivity - the ability to reflect heat back into the room)
Solar transmission (maximum = 1)
Storage period	Unlimited	9 months after production
Coating strength	Like ordinary glass	Necessary careful handling- easily damaged
Processing-hardening	Easy to temper (no longer than regular glass)	Only when using special equipment and procedures
Glass unit processing	Just like ordinary glass	Edge removal required
Transportation	Just like ordinary glass	High risk of surface scratches

The low-emission coating has a very high electron density of atoms. Long-wave radiation (heat radiated inside a room by heating devices, central heating, electric bulbs and even the temperature of the human body) cannot fully pass through the coating, mostly reflected back into the room. Shortwave ( solar energy) efficiently passes through low-emission glass, accumulates and turns into long-wave, thereby providing additional source heat and effective insulation.

The use of heat-saving glasses can reduce energy losses by about 70%.

In connection with the growth in consumption of insulating glass units with heat and energy-saving glasses, since January 2009, the STiS Group of Companies has introduced additional marking of insulating glass units containing “warm” low-emission glass with a “soft” coating with a holographic sticker of the following type:

The holographic sticker is applied to the low-emissivity glass on outside glass.

Coziness and warmth in the house depends on the quality of the window structures. Many people want to buy windows in Moscow that have high thermal protection rates, which let sunlight into the room well.

I-glass constructions have a number of advantages:

reduce heating costs;
prevent fading of interior items;
improve the thermal insulation of the room;
do not accumulate condensate on the inside;
have a long service life.

You need to know that the price of heat-saving windows in Moscow is available to everyone. The i-glass designs do not differ much in cost from conventional plastic models.

Pricing examples

Bivalve.

Profile: KBE Etalon 58 mm.

Price * with a 29% discount 8 190 rubles.

Tricuspid.

Profile: KBE Etalon 58 mm.

Filling: double-glazed window 4-10-4-10-4IST (thickness 32 mm).

The outer glass is coated with a low-emission, energy-saving coating based on silver ions.

Price * with a 29% discount 11 960 rubles.

Balcony block.

Profile: KBE Etalon 58 mm.

Filling: double-glazed window 4-10-4-10-4IST (thickness 32 mm).

The outer glass is coated with a low-emission, energy-saving coating based on silver ions.

Price * with a 29% discount 14,700 rubles.

* The cost is indicated for the product: excluding delivery and installation work.

Advantages of ordering in "Okna-Star"

The company offers energy-saving plastic windows for any premises. The company has extensive experience, offers customers only high quality products made according to individual measurements.

Another advantage is that we ourselves produce heat-saving plastic windows. All materials used are characterized by high wear resistance, safety for human health.

Ordering from us window systems with energy-efficient double-glazed windows, you won't have to wait long. The manufacture of structures will take a minimum of time, the work will be completed within the specified time frame.

How we are working?

Customers know that the cost of the products we offer is affordable. Cooperation with the client begins at the measurement stage. You can call a measurer for free and calculate the cost.

After taking measurements, the employees of our company perform the following actions:

clarify the wishes of customers;
design systems;
make structures;
deliver them to the object.

The profile and glass of the structures correspond high quality, and real professionals are engaged in their installation.

A premium German brand on the Russian market since 1995. With us you get real German quality from a 48-year-old company all over the world.

ALL profile systems of the highest class "A"
ALL are frost-resistant and marked with the letter "M"
ALL have a maximum 4-sided steel reinforcement
Uniform quality standard regardless of the country of production

The more air chambers, the less air exchange and, accordingly, the higher the thermal insulation.

The wider the profile and the greater the installation depth, the higher the thermal insulation.

Profiles ONLY of the highest class "A"

According to thickness inner walls ALL our profiles are of the highest class "A" - their front wall thickness is not less than 3 mm.

class "A": front wall not less than 3.0 mm
class "B": front wall not less than 2.5 mm
class "C": wall thickness is not standardized

Please note that 80-90% Russian market these are classes "B" and "C" and only 10-20% of profiles of class "A". At the same time in our assortment VEKA profiles ONLY class "A".

In principle, we DO NOT use profile systems of classes "B" and "C" (with a front wall width less than 3.0 mm).

ONLY frost-resistant profiles

According to GOST 30673-99 "PVC profiles for window and door blocks" in terms of resistance to climatic influences, ALL our profiles are "frost-resistant" - for areas with an AVERAGE monthly air temperature in January BELOW minus 20 ° С.

GOST standards for different classes:

normal version "H": average temperature in January - minus 20 ° С and above
frost-resistant version "M": the average temperature in January is lower than minus 20 ° С

Our range includes ONLY frost-resistant profile systems, marked with the letter "M".

Heat transfer resistance (thermal resistance) is the main coefficient of thermal insulation. It is determined by the ratio of the temperature difference between the outside and inside the room to the heat flux passing through the window. The higher the number, the better the insulation performance.

Evolutionary glass units SmartGlass 2.0

Our multifunctional double-glazed windows work for you both in winter and in summer. In winter, the deposition of silver particles saves up to 90% of the thermal energy of heating devices, and in summer, a glass unit reflects 25% more solar heat than conventional plastic windows.

42% more HEAT in winter (energy saving properties)
25% less HEAT in summer (sun protection)

All our insulating glass units contain special energy efficient glass. We DO NOT use conventional glasses, even in the most basic configurations.

Climate control systems AirDrive I, II and III

Optimal ventilation mechanisms are built into the windows - the sashes open slightly by 1-5 mm, depending on the selected mode. These are NOT external devices (combs or valves), namely BUILT-IN hardware ventilation.

Three options:

AirDrive I: slot ventilation (1 mode)
AirDrive II: discrete multi-stage ventilation (3 modes)
AirDrive III: discrete multi-stage ventilation (5 modes)

We try not to put combs because of their appearance (only at your request). In principle, we do not use valves due to the fact that they violate the integrity of the window, reduce its tightness and strength (since the profile and its reinforcement are drilled through).