How to install heat recovery systems

Providing excellent ventilation to all areas of a property, heat recovery systems continually supply fresh air. Even when they are turned on for the vast majority of the day, a lot of heat won’t be lost. A homeowner needn’t worry about their energy bills when they choose a heat recovery ventilation (HRV) system because the temperature inside won’t be affected much. Although a company that specialises in heat recovery systems can be hired, it can be installed without their assistance:


The first step

A heat recovery system has to be fitted in a loft space. It can be mounted on a joist, the floor or raised on a plinth. However, a heat recovery system should be placed near a wall and mains electricity so that not as much cabling is required. The location of the ducts that are fitted in each room should be given serious consideration. It is recommended that room vents are placed far away from a door. A suitable gap should also be between outgoing exhausts and incoming exhausts.

Fit a unit near where a system is

A heat recovery unit must be near a system which is fitted in a loft space so that it is easy to operate and turn on when required. When a unit is close to a system, not as much wiring is needed.

Consider where ducting will be

Ducting is fitted to the outside of a property. It brings fresh air inside and replaces stale air. Reducers and spigots are normally required for larger ducting although this isn’t necessary in bigger properties. Two loops are needed inside a property. The first loop takes stale air out of a property and the second replaces it with fresh air. By planning ducting runs, not as much ducting is required.


Before installing heat recovery systems, ask for advice from a professional ventilation company. As they have fitted these systems for many homeowners and businesses before, they can use this extensive experience to the advantage of their customers who will be doing it themselves. A professional ventilation company can even offer suggestions to improve a ducting run. Advice can also be given regarding the wiring that connects a system to a unit. If a homeowner isn’t a qualified electrician but has experience of doing so in their property before, professional ventilation company can highlight any modifications which they believe should be made.


Once a HRV unit is fitted, all areas of a property will benefit. As it will have decent airflow, condensation is prevented from settling on cold areas. It will also appear very fresh without affecting the temperature even when radiators and electric heaters are turned on for much of the day.

For more guidance on ventilation Ireland or other parts of the UK, contact BPC ventilation who is based in Larne Co. Antrim.

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