Heat Recovery Ventilators

Heat Recovery Ventilators

One important reason as to why we need to spend so much money on heating our properties that the air in our homes that we’ve spent money heating, leaks out as drafts our doors and windows.

This is theoretically easy to fix – just make your property air-tight. The problem with this is that we need oxygen within the air in our homes to live and we need to remove the CO2 that we generate when we breath. We also need to continually remove moisture from our homes because we generate plenty of it when we breath, cook and wash.

The solution therefore is to continually replace the air within our homes without losing the heat within it and with consuming as little energy as possible in the process.

There are some very good products on the market designed specifically to do this. These products use traditional air conditioning technology, consume significant electricity and generally require ducting systems to get air in and out of all the rooms. They are therefore much better for new builds, and not so good for a retrofit.

Introducing the UFL Heat Recovery Ventilators

Heat Recovery Ventilators

UFL Heat Recovery Ventilator

With a form factor identical to a traditional, common extractor fan, the UFL heat recovery ventilator can be fitted in the bathroom and kitchen in exactly the same place as your existing extractor fans.

UFL Heat Recovery Ventilators

What’s inside

How does it work

Using only the power consumed by a very efficient and quiet reversible fan, the heat recovery ventilator (HRV) first blows warm air from the room through a ceramic heat accumulator to the outdoors. After a short period of time (approximately 70 seconds) when the ceramic accumulated has been warmed by the inside air travelling through it to the outdoors, the fan reverses direction pulling fresh outdoor air through the ceramic accumulator where it is heated by the energy of the previous cycles air.

When multiple HRVs are used/required in a property, the TwinFresh model can be used to synchronise the direction of fans within the ventilators. So if one HRV is installed in the kitchen and one in the bathroom, the bathroom ventilator can be blowing in whilst the kitchen ventilator is blowing out. Then 70 seconds later they both reverse direction in a synchronised manner.

Heat Recovery Ventilators

Synchronised Multi-Ventilator Heat Recovery

This amazingly simple, reliable and efficient heat recovery ventilator is capable of recovering up to 90% of the heat when replacing stale humid air with fresh outdoor air.

Heat Recovery Ventilators cycle

Supply/extract cycle


Here’s another way of explaining the concepts involved with Heat Recovery Ventilators.

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