All homes need ventilation, whether it be natural or mechanical. Houses are no longer built the way they used to be, with fresh air coming in through window openings and heat leaking out of houses. Energy-efficient, airtight, and well-insulated houses are now being built, making healthy indoor air through ventilation a necessity. The most modern and energy-efficient solution is a heat recovery ventilation unit or a ventilation aggregat.
How does a heat recovery ventilation unit work?
A heat recovery ventilation (HRV) unit ensures clean indoor air and energy savings. The unit uses the warmth of the exhaust air to pre-heat the incoming fresh air, thereby saving money on heating bills. The efficiency of the heat recovery depends on the heat exchanger and the highest-quality units have an efficiency of over 90%.
Airobot heat recovery ventilation unit, developed and manufactured together with university scientists, comes equipped with a counterflow plate heat exchanger. Its advantages are:
– high heat recovery efficiency (approx. 90%), eliminating the need for a separate auxiliary heating system;
– reliability. The plate heat exchanger has no moving parts, it consumes no electricity and does not wear out;
– it is virus and bacteria free. In plate heat exchangers, the extracted and intake air are not mixed, preventing the transfer of viruses and bacteria between rooms and also preventing unpleasant odours from returning indoors.
Ventilation unit with heat and humidity recovery
In the Estonian climate, the air can become too dry during the heating season. While the optimum recommended relative humidity indoors is 30–50%, the air can become too dry in cold winters. Indoor air that is too dry makes people more susceptible to viruses and irritates the mucous membranes. Therefore, it makes sense from the perspective of health to choose a ventilation system with heat and humidity recovery (energy recovery, ERV). This is particularly important in wooden houses, as excessive drying of the wood will cause cracks to form. The cracks collect dust and dirt that is difficult to remove. In addition, cracked wood is no longer as aesthetically pleasing.
Entalpia heat exchangers with the humidity recovery function of an Airobot ventilation unit also allow humidity to be captured from the outgoing air and returned to the clean incoming air – the efficiency of humidity recovery is up to 60%. A humidity recovery heat exchanger is similar to a conventional heat exchanger, but the plates use a special innovative polymer membrane technology. This allows the humidity in the air to be transferred from the exhaust air back into the supply air. The material is antibacterial, which prevents germs from spreading on the plate.
Choose the right ventilation system for the size of your home here.