Kair Heat Recovery Room Ventilator K-HRV150/12RH
Rating: 90 / 100
An energy efficient heat recovery unit designed to alleviate condensation in rooms with major condensation and air quality issues.

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Availability: >In stock


RRP £280.14 Ex VAT
£249.50 Ex VAT £299.40 Inc VAT

Kair Heat Recovery Unit

Kair Heat Recovery Room Ventilators provide a continuous air change all year round, replacing stale and moisture-laden air with filtered, fresh and warmed air from outside.

These units provide an effective solution to condensation and mould growth problems in any room in which they are fitted. They are ideal for tackling condensation in kitchens, bathrooms, utility rooms, living rooms, lavatories, washrooms, conservatories, offices and bedrooms. They dramatically improve the quality of the indoor air supply, benefitting the health of inhabitants. 

How Heat Recovery Units Work

As the stale air is drawn out, it passes over a heat exchanger, which traps (recovers) the heat from the outgoing air in order to warm the incoming fresh air.

When humidity levels increase, the unit automatically switches to a boost mode. You have the ability to set the humidity level isolating transformer at which boost mode is activated to ensure that condensation does not occur. When humidity levels have returned to an acceptable level the heat recovery unit returns to its standard trickle mode. The continuous controlling of Relative Humidity levels ensures that condensation and mould growth does not occur.

Benefits of Kair Heat Recovery Units:

Energy Efficient

Unlike conventional extractor fans which suck out and waste expensively produced heat, Kair Single Room Heat Recovery Ventilators recover up to 86% of exhaust heat, even when operating on boost mode. By replacing conventional extractor fans with heat recovery systems you could save at dramatically reduce energy loss. The Kair unit is also low energy with minimal running costs.

Health Benefits

Kair units reduce humidity to optimum levels, which eradicates condensation and prevents mould growth. They also rapidly remove pollutants such as volatile organic compounds (VOCs), allergens such as dust, oxides of nitrogen, carbon monoxide, carbon dioxide, tobacco smoke and unpleasant odours. Ventilation is necessary to maintain a healthy and comfortable internal environment for you and your family.


The Kair™ ‘through-the-wall’ units are easy to install using a 152mm core drilled hole. Installation is undertaken entirely within a building with no requirement for external access, which reduces installation costs on High Rise applications. Read our full Kair Heat Recovery Unit Installation Guide.

Note: Suitable for wall thickness from 229mm to 356mm. An extension kit is available for walls up to 1 metre thickness.


Filters should be removed regularly and replaced or cleaned with a domestic vacuum cleaner or washed if exceptionally dirty.

The motors are guaranteed for 5 years and are fitted with ‘Sealed for Life’ bearings, which do not require maintenance or lubrication.


Further Reading

Browse our full range of Ventilation and Condensation Control products. Find out more information in our comprehensive guide to Tackling Condensation in Your Home.


  • Up to 86% Heat Recovery
  • Easy to install (no external access required - 152mm Core Drill)
  • Whisper quiet
  • Meets IEE, SELV and Building Regulation requirements
  • Continuous running trickle ventilation
  • Humidity sensor (preset or adjustable)
  • Night sensor allows Bedroom installation
  • Low running costs
  • Balanced airflow (input and extract)
  • Energy savings – differential payback within 4 years against conventional extractor fans
  • Dramatically improves of indoor air quality
Model: K-HRV150/12RH
Manufacturer: Kair
Packaging: each
Size: see technical data sheet
Coverage: 1 Unit per room
Country of Manufacture: United Kingdom

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0117 982 3282

Very poor!

Been an electrician for 27 years. This was one of the worst products I've had to fit. Spoke to the company and was mocked by someone for following the instructions and using adhesive to put the unit together AS PER INSTRUCTIONS. Apparently the instructions are wrong on more than one account. Finally managed to get the unit together with a bit of luck! Yet to see if it actually is any use up and running.

Very happy

fantastic product that has solved our condensation problem

At last

Having tried so many times to solve a damp problem in a let property I was about to give up when I found this product. I was wary when Permagard assured me that it would prevent the return of the dreaded mould, but it's been running for eight months now and the décor is unmarked. I wish that I had found this years ago.

Thanks Permagard!

Spoke to Steve at Permagard who recommended this product as I wasnt too sure what my best option was. He really knew his stuff and made sure that I received my order the next day.

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