Vent-Axia MVHR & Heat Recovery Units

Frequently asked questions

Whole house MVHR or single room heat recovery?

Whole house MVHR is a central unit, usually in a loft or cupboard, ducted to every room. It extracts from kitchens and bathrooms and supplies fresh, warmed air to living rooms and bedrooms. Single room units such as the Lo-Carbon Tempra fit through one wall and ventilate one room, which suits refurbishments and individual problem rooms. See also our single room heat recovery range.

Which Sentinel Kinetic do I need?

The model depends on the airflow the house needs, which comes from the floor area and the number of wet rooms, and on where the unit will go. The Sentinel Kinetic B and Plus B suit most houses and flats, the High Flow models suit larger homes, and the Horizontal models fit a ceiling void. Send us the floor plan and we will size it.

Left hand or right hand?

Some Sentinel Kinetic models come in left and right hand versions, which describes where the duct connections are. Choose the version that suits your duct layout so the runs to and from the unit stay short and simple.

What is a summer bypass?

A summer bypass lets the unit bring fresh air in without passing it through the heat exchanger, so on warm nights the house is not heated by the outgoing air. Units with a bypass say so in the title.

Do you sell filters and controls?

Yes. See our replacement MVHR filters and heat recovery controllers, or send us the unit model and we will find the right parts.

Does MVHR need commissioning?

Yes. A whole house system has to be balanced so each room gets its design airflow, and in new homes the airflow has to be measured and recorded for Building Regulations. Use a competent installer for the design and commissioning.