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Vent-Axia HR300
276sqm dMVHR 280mm x 380mm

The HR300 is a single room wall mounted dMVHR suitable for light commercial applications with a floor area up to 276sqm (300cbm/h), ideal for function rooms, offices etc.

Designed to be a low carbon replacement or alternative to traditional intermittent extract fan with the benefits of recovering heat from the extracted air. The HR300 features include:

  • 2 year Vent Axia warranty
  • Up to 70% heat recovery
  • Low energy, long life DC fan motors
  • 3 speed motor trickle, normal and boost
  • Rotary controller or electronic to switch between speeds (optional)
  • Humidity sensor to automatically adjust airflow (optional)
  • Extension sleeve for walls up to 650mm (optional)
  • Washable filters
  • Manufactured in the UK to high specification

Vent-Axia HR300Download the HR300 brochure

free MVHR design serviceSolarcrest supply, install and commission MVHR systems throughout the UK. For a free design and quote please send a plan of your property to or call 0845 833 0388.

Our price: 424.00 each
(508.80 inc.)
Product details ..
Vent-Axia HR300
276sqm dMVHR 280mm x 380mm

Heat Exchanger

Fresh, pre-warmed air from outside is continually provided to the room with simultaneous extraction of stale moist air and smells. Heat is transferred via a unique plastic heat exchanger from outgoing air to the fresh air supply with no cross contamination, maintaining internal temperatures and providing a fresh environment.


The unit is fully contollable for speed using a small dedicated speed contoller. Automatic ON/OFF control or switching to boost is easily acheived using sensors/timers e.g. humidistat. For summer operation the heat exchanger can be removed and replaced with a plastic divider board to provide positive cooling to rooms.


Apart from removing odours, providing fresh air and recovering heat, this appliance extracts airborne impurities such as dust, dirt and grease. These gradually build up and detract from the efficiency and appearance of the appliance. Therefore to ensure peak performance, the appliance should be cleaned regularly. Filters should be cleaned by washing every six months or as conditions necessitate. Replacement filters can be purchased in packs of two. The heat exchanger should be washed in warm soapy water every twelve months, or as conditions necessitate. Access to the filter and heat exchanger is via two screws on the internal grille.


The HR300 unit requires a 380mm x 280mm hole. Units should be level and square in the wall.The unit should be fitted so that it overhangs by minimum of 50mm on the inside, and a minimum of 70mm on the outside. An extension sleeve is available for walls up to 650mm thick. Please check the installation manual for dimensions.


Solarcrest will assess your floor plans and ventilation requirements in order to recommend the most appropriate MVHR system. We'll then provide accurate budget costs for the supply, installation and/or commissioning of the system to current building regs. Subject to an initial deposit we release our proposed ducting design and air flow specification for consideration by your building inspector. Subject to approval we can normally have the complete system on site within a week.

If you need any further help or advise with your MVHR purchase please don't hesitate to call 0845 833 0388 or email