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What is heat recovery ventilation and HRV unit?

Energy recovery is an exchange of physical properties between two separate systems in close proximity. It happens naturally in our environment and is harnessed in many areas of human life. In automotive industry, modern cars transfer excessive kinetic energy (when slowing down rapidly) to electricity, continually recharging their batteries. In construction industry, heat collectors embedded in pipe systems utilize the warmth of waste water (from washing clothes and dishes, showering etc.) to reduce primary energy consumption for further water heating. In WAFE, we deal with air-to-air recovery of heat and humidity contained in your home; in ventilation industry this is called an energy recovery ventilation (ERV) as opposed to heat-only recovery ventilation (HRV) provided by some of our competitors. WAFE technology enables you to experience the window-opened fresh air while not losing the warmth you have produced (and paid for) inside your house. WAFE ERV units efficiently heat up the…

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What are the advantages of smart ventilation?

The current building trends have caused that houses are actually sealed. Although trying to reduce the energetic performance of buildings makes sense both in terms of cost savings and in terms of sustainable development, though without effective ventilation, mere insulation has a significant negative side effects. Unventilated spaces keep molds and do not contain enough oxygen that we by all means need for our life. Until recently, the recuperation used to have its own flaws - such as an excessive drying of a living space. WAFE has therefore developed a solution that can ventilate, save energy contained in the indoor environment and preserve a natural humidity. Additionally, it filters the outdoor air so that it reduces dustiness and an occurrence of pollutants, including the street noise.

Why should I buy a WAFE unit rather than a competition?

WAFE uses several innovations that significantly increase device efficiency and customer convenience. In particular, it is a flap enthalpy system (EFS) that allows the return of natural moisture to the environment. Therefore, it is not necessary to preheat the outside air in temperatures below zero as do the other units, and there is no need to install additional air humidity control devices. WAFE works autonomously with accurate sensors and tells its user attention online.

Why is it good to have natural level of humidity in your home?

Recently the myth has spread that any moisture in the building is detrimental, causes molding and the like. This concept is based on experience from unventilated, sealed houses. But what is the ideal level of humidity? In the living rooms it is the best to keep about 40% humidity. Low humidity forces you to heat up to 2-3 ° C for the same heat feeling. In addition, insufficient moisture can be harmful to your health, as it dries the airways and reduces the immunity of the body. Too high level of humidity - over 60% - is not appropriate as well. Combined with cold surfaces, it is a common cause of water vapor condensation and mold formation. WAFE units are set to maintain the natural humidity of the environment and do not dry out your living space. We try not only to ventilate, but also to keep your environment clean and healthy.

What does WAFE mean?

Water, Air, Fire, Earth. First letters of the elements that we cooperate with to reach to the top, give us our name. Though we are a czech company, we chose this acronym due to our journey to the international market.

42 results

101.

What is heat recovery ventilation and HRV unit?

Energy recovery is an exchange of physical properties between two separate systems in close proximity. It happens naturally in our environment and is harnessed in many areas of human life. In automotive industry, modern cars transfer excessive kinetic energy (when slowing down rapidly) to electricity, continually recharging their batteries. In construction industry, heat collectors embedded in pipe systems utilize the warmth of waste water (from washing clothes and dishes, showering etc.) to reduce primary energy consumption for further water heating. In WAFE, we deal with air-to-air recovery of heat and humidity contained in your home; in ventilation industry this is called an energy recovery ventilation (ERV) as opposed to heat-only recovery ventilation (HRV) provided by some of our competitors. WAFE technology enables you to experience the window-opened fresh air while not losing the warmth you have produced (and paid for) inside your house. WAFE ERV units efficiently heat up the…

More

102.

What are the advantages of smart ventilation?

The current building trends have caused that houses are actually sealed. Although trying to reduce the energetic performance of buildings makes sense both in terms of cost savings and in terms of sustainable development, though without effective ventilation, mere insulation has a significant negative side effects. Unventilated spaces keep molds and do not contain enough oxygen that we by all means need for our life. Until recently, the recuperation used to have its own flaws - such as an excessive drying of a living space. WAFE has therefore developed a solution that can ventilate, save energy contained in the indoor environment and preserve a natural humidity. Additionally, it filters the outdoor air so that it reduces dustiness and an occurrence of pollutants, including the street noise.

103.

What development projects are suitable for smart ventilation?

Generally, heat recovery units are designed for all types of facilities and spaces. However, it is important to choose the right type of the unit. There is a different type suitable for technical premises (with the necessity of separating pollutants) and other one for residential houses and apartments. WAFE units are primarily intended for living spaces (homes, flats, retirement homes, youth homes, etc.), nurseries, schools, office space and office buildings. Nevertheless, the units can also be applied to production facilities, so called “clean production” (precision assemblies, laboratories, filling lines, etc.).

104.

Can I open the windows when the unit is in operation?

Of course you can open the windows! Though if you do so in the winter, the advantages of smart ventilation start to diminish. Moreover, when you install the system, you will find out that you have so much fresh air at home that you will not even think of opening the windows. According to our experience, it takes about 2 weeks. :-) Most of us do not live in the mountains or by the sea, and opening the window especially in the urban areas (or in unfavorable climatic conditions) actually means to let dust, smog, allergens into your home instead of the clean, fresh air.

105.

Will the recuperation unit work when I have a fireplace?

The unit will work smoothly if the fireplace is equipped with an external air supply, a system that is usually generally recommended. There is no burning of oxygen, which you have in your interior, the fireplace consumes the oxygen, which it gets from the outside by itself.

106.

Can the heat recovery unit heat up my home?

The WAFE energy recovery ventilation unit itself is not equipped with any heater. It only recovers once-produced heat and returns it to your home. Thanks to the heat recovery unit, it is enough to heat your home significantly less, and yet have a very pleasant environment at home, even in winter.

107.

Can the unit replace air conditioning?

It can not. The unit is not equipped with any cooling unit. The unit is only able to "smartly" use the difference in day and night temperatures and "pre-cool" your home thanks to the By-Pass mode. WAFE develops cooling modules that operate on a healthier principle than conventional air conditioning, which is often responsible for our respiratory problems such as angina and flu.

108.

How does the heat recovery unit work in summer?

In summer, the unit uses the By-Pass mode by default. The unit allows outdoor air to enter the house without the heat exchange. The mode starts to pre-cool the room during the night in the summer months. The temperature increase during the day is slower thanks to the summer mode. Sometimes it is recommended to turn the unit off during the hottest periods and ventilate via windows, if the outside environment is free of dust and other harmful substances.

109.

What do I do when I am buying a house with a unit from the previous owner?

We recommend calling our customer line and announcing a change of the owner. Once you have proven your ownership change, you gain access to the moje.wafe.cz application and you will be able to use and enjoy the unit fully, same way as a previous user did. At the same time, we recommend you to order a review of the unit to be sure to buy it fully functional in an optimal condition.

110.

My house is standardly insulated and I have euro-windows. Does it make sense to buy a recuperation unit?

The answer to this question is not quite easy. The installation of recuperation technology into already completed buildings is always a significant intervention and the options and a way of the installation are very individual. A well-insulated house is one of the prerequisites, but it is not the only condition. We recommend that you contact our customer line and then make an arangement to process your project proposal. In it we will describe not only all the assumptions, but also the anticipated form and cost of installation in your house or apartment.

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You can filter your documents using keywords and sort alphabetically by clicking the parameters in the header. For another document language, change the language of the page by the icon in the top menu.


Datasheet
Category Informational
Products 350
Document name Datasheet
Document description Brief infomation WAFE 350 datasheet
Product manual
Category Informational
Products 350
Document name Product manual
Document description Key document for WAFE 350 users.
Product sheet
Category Promo
Products 350
Document name Product sheet
Document description Introduction to WAFE 350 and the world of WAFE.