Ventilation and Why We Need It
New houses are required to meet sustainability standards and ensure heat loss is kept to a minimum. Houses are now being built airtight to prevent warm air from being lost to the outside.
Airtight buildings require correct ventilation for the health of the occupants and the building. To give you fresh filtered air to breathe and to maintain correct airflow to prevent mould and condensation build-up, mechanical Heat Recovery Ventilation (MVHR)is required.
A heat recovery ventilation system (MVHR) provides constant controlled ventilation without allowing heat loss normally caused by open windows or other ventilation. It can also retain up to 95% of otherwise lost heat from your property, reducing your overall fuel costs and making it an affordable solution for supplying new homes with clean, fresh air while also recovering and reusing existing heat to save money.
How Do Heat Recovery Systems Work?
Heat Recovery Systems work by extracting the stale, moist and polluted air from wet rooms, utility rooms, kitchens, bathrooms within a home. This air passes through the heat recovery unit at the same time as the fresh outside air is passing in through the unit.
The clean fresh air passes through the filters and is heated from the warmth extracted from the stale air, providing all living rooms, dining rooms and bedrooms with fresh clean air with no loss of temperature. The heat exchanger maintains separation of the extract and supply air flows.
A Heat Recovery system runs continuously on low speed, with a boost facility which can be activated via various controllers and sensors depending upon the unit.
A Heat Recovery system gives a constant flow of fresh air, controls condensation, increases your security and lowers your carbon footprint.
MVHR and Cooling
With recent changes to BR Part F and Part O, ventilation and overheating, ventilation can incorporate cooling systems.
These do not work the same way as air conditioning but can be incorporated at the design stage to offer a cooling module for the MVHR unit to provide tempered air cooling by a few degrees.
MVHR and Heating
MVHR and MEV ventilation can be combined with heating systems and mechanical extract systems to provide heating, ventilation and hot water.
MEV
Mechanical Extract Ventilation provides constant ventilation from bathrooms, kitchens, and utility rooms, with a boost facility when required to extract stale humid air outside. Air is brought into the building through background ventilation in the form of wall or window vents, allowing a whole house to extract ventilation and keeping the entire property correctly ventilated.
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