Project Description
Passive house roof windows
These highly insulated roof windows are the perfect way to let the light in and reduce costs. Roof windows have become a popular choice lately due to their chic look.
You can combine them with solar thermal panels for maximum energy efficiency, but they are sure to save you some money on the bills on their own.
Passive house certified windows
To be certified as passive house windows, they need to pass rigorous efficiency tests that measure heat losses through the frame and glass edge. If those values are low, the large glass surfaces will allow solar gains and keep the heat inside. They are especially sought-after in cold climates.
Passive house windows and doors
For maximum efficiency and energy-saving capabilities, a full set of windows and doors is necessary for your passive house. The doors are thermally broken and triple glazed, with the space between panes usually filled with argon or krypton.
Both the windows and the doors are important for the overall passive house certification.
Passive solar windows
Installed with the movement of the Sun in mind, the passive solar windows are usually on the southern facing side of the house to ensure maximum heat absorption for heating during winter. In summer, a shading system is relied upon for cooling. You can expect up to 85% heating and cooling costs for these types of homes.
George Buildings: Your Affordable Wholesale Passive House Windows Supplier
George Buildings is one of the most reliable passive house windows suppliers in Foshan China , manufacturing high quality windows at affordable passive house windows prices.
Passive house windows for sale
When hearing “passive house windows”, most people think that there is a specific style or design that fits this description. This is, however, not the case. “Passive house windows” refers to a certification or standard given to windows that fit certain criteria.
To achieve this standard, those windows are usually equipped with thermal brakes, they are airtight and triple glazed with gaps between the panes filled with argon or krypton gas.
The main feature they are known for is the reduced energy costs in the long-term. We can see two distinct groups of passive house windows, depending on their objective. Heating passive house and cooling passive house.
The first one is specific to colder climates, with the goal of keeping the heat in as much as possible so you keep your heating bills low. The second one is popular in hot climates, such as the East coast of the US where you want to keep your house as cold as possible.
You will also hear about the solar heat gain coefficient or simply solar coefficient in this industry, used as a measure of how efficient your passive house windows are.
Related Products with Passive House Windows
Video
Passive House Windows Buying Guide
Pros and Cons of passive house windows
Pros
- Improved air quality
- Low energy consumption
- Reduced air pollution
- Versatility
- Increased comfort throughout the year
- No dampness or mold
Cons
- Higher construction/buying costs
- The windows require knowledge to operate, to keep your system working as intended
- Complexity, calculations, and inspections would need to be done in order to select the base option for you
Can you open windows in a passive house?
Absolutely, while you need to follow some guidelines given to you by your supplier, you can still open your windows. During warm periods for example, if the side the windows are on is under shade, you can of course open them for cooling and ventilation.
You can also choose windows that open inwards for easier cleaning practice. Almost all passive house windows feature openable windows simply because of their familiarity with the normal customer.
That ‘connection’ to the outside is very hard to give up for most people, so you are not required to do it when using the passive house system. Another important function of the opened windows is the ability to be used in case of emergencies. Lives have been saved this way before.
Are passive houses worth it?
While the initial costs may be higher than normal windows, studies have proved that long-term use will save money through reduced energy consumption. These reduced energy costs are quite significant, which is the reason why many people opt for these types of systems.
Increased levels of comfort are also linked to the passive house model. An important downside in some cases is the fact that it would take some time for the passive house system to restore itself if you are looking to renovate, for example, since you would need to open up all windows in your house.
Even considering all the downside, if we are talking about decades, passive houses are worth it since you will definitely save money on energy bills.
How do passive houses work?
The main idea is to maintain a constant atmosphere, as opposed to heating or cooling on demand. Passive houses avoid the so-called thermal bridges, areas that facilitate exchange between hot and cold hair which results in heat loss during winter and overheating in the summer.
This continuous insulation also prevents condensation, a leading cause of damp problems. Using the thermal efficient windows to prevent any sort of airflow, moisture, or heat around the edges of the frames or glass, the passive house systems achieve very good insulation.
When this atmosphere is achieved, plumbing systems are used to transfer the heat and air in and out of the house with minimal energy use. Thus, a constant temperature is maintained.
In addition to this, heat is generated from anything that runs on electricity in your home, such as light bulbs, computers, TVs, refrigerators. Passive houses make sure that this energy is kept within. The air inside closed spaces will get stale at some point, so a ventilation system is carrying it outside
Due to heat savings generated by this process, funds can be invested in better insulation, ventilation, and less expensive backup heating systems.
How do you get passive house standards?
You can check the official Passive House Institute website for more information, but generally:
- Space Heating Energy Demand must not exceed 15kWh per square meter of net living space (treated floor area) per year or 10 W per square meter in peak demand
- The total energy to be used for all domestic applications (heating, hot water, and domestic electricity) must exceed 60kWh per square meter of treated floor area per year for Passive House Classic.
- For Airtightness, a maximum of 0.6 air changes per hour at 50 Pascals pressure (ACH50) is allowed, as verified with an onsite pressure test (in both pressurized and depressurized states).
- Thermal comfort must be met for all living areas in both winter and summer, with no more than 10% of the hours in a given year over 25°C.
How much does a passive house window cost?
This depends on the size and style of your window, so we can not give you a precise estimate. The costs per square foot of an average passive house is $160, but this can vary by a lot, so the best option is to inquire to your supplier about your particular situation and they will give you a move accurate picture of total costs.
Prices value wildly between countries, and even regions of the same country, so do not hesitate to ask more than one company on an estimative price. You also shouldn’t forget to take into account the installation cost.
You can consider hiring a handyman if the installation cost offered by your supplier is too high. Keep in mind that if the said handyman does not do a good job, additional may appear.
What factors should you consider when buying a passive house window
- Consider the ‘U-value’, which is a way of measuring how well heat is transferred in or out of a building. This value should be lower than 0.8 W/(m²K) for the windows to be part of the “passive house” category;
- Rain sensors may or may not be important for some people, so think if want your windows to shut automatically when the weather changes.
- Think about where you should install those windows. The south side of the house is generally the best option since it will allow better solar heat gain.
- Consider the best material for your budget and taste
- Ensure that the window is airtight
- Inquire about the number of panes in the window and the gas that fills up space between them
Where to buy passive house windows in China
You will find most Chinese suppliers in one of those 3 regions: Zhejiang, Fujian, and Guangdong
In case you are already in China, you can simply visit some of the more known manufacturers in the industry or attend fares organized by them. If you are, however, not in China or cannot travel there, you can hire a professional sourcing agent to handle your sourcing requirements. Look for one who has excellent communication skills to make sure they can transmit your exact preferences to the supplier.
You can take a look at our guide for more information on this matter.
For a quick search, you can check out:
Top 10 Door and Window Manufacturers in China
Why choose us?
We are a fast-growing company with over 14 years of experience that has already received and fulfilled many orders from different customers (you can read more about our projects on our website). This is proof of the quality of our manufacturing technologies and products.
Our agents will be sure to help find the best option for you while taking into account your preferences. We will help you balance your budget so that you are satisfied with the quality of the products you receive.
There are many aspects you should consider when you decide to go for a passive house and we will be sure to walk you through all of them. We are happy to answer any questions you might have, so do not hesitate to ask.
Intelligent Manufacturing
George Buildings has established a comprehensive control system for all processes and systems to ensure the production of the highest quality building materials
High Production Capacity & Flexibility
George Buildings has formed strategic partnerships with leading suppliers around the world to ensure a continuous supply of machinery, panels, edge band, hardware, and others. These important alliances seek to maintain strict quality controls at the sourcing stage.
One-stop Shop Solution
George Buildings Company is your one-stop building materials supplier and service provider. We are the ultimate source for all your building material needs for your big and small construction or renovation projects. With our comprehensive custom solutions, your commercial and residential building projects are sure to be completed to your satisfaction. You can take a look at our completed projects here.
Conclusion
Passive house windows are a great investment that is sure to be beneficial in the long term. You will save significant amounts of money on energy bills. You should, however, be prepared to respect some guidelines for the system as a whole to function as intended.
The passive house windows have successfully raised expectations of what a sustainable, high-performance system should be. With our extensive expertise and experience, we will help you find the best option possible for your budget. Inquire about your desired size and we will take care of the rest.
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