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Prices and stock levels correct at the time of printing (25/02/17 22:01)

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The Vent-Axia HR100W range is designed for continuous operation providing up to 70% Heat Recovery. Effectively controlling internal relative humidity. The Vent-Axia HR100WH unit come complete with
integral humidity sensor and controls condensation and reduces mould.

Fresh pre-warmed air from the outside is continuously provided to the room with simultaneous extraction of stale, moist air.

An integral heat exchanger transfers heat from the outgoing stale air to the fresh air supply, raising the temperature of the fresh air and most importantly reducing the Relative Humidity of the supply air to the room.

The HR100WH has a two speed motor which provides for constant low rate
ventilation automatically switching to boost speed on rising humidity level of approximately 70% relative humidity at 20°C. This level can easily be adjusted by removing the front cover and heat exchanger to reveal the adjustment spindle.

Typical Installation

HR100W/HR100WH Typical Installation

Extract Performance

Intake Performance

Watts Sounds Levels

dB(A) @ 3m
Boost Trickle Boost Trickle Boost Trickle Boost Trickle
73 43 69 38 31 12 30 20

HR100W units require a 240mm x 160mm hole. The unit should be fitted so that it slopes towards the outside (nominal 1°) to assist in-built condensate drainage.

The telescopic flange (adjustable to fit walls 220mm to 280mm thick) covers cutting marks and provides a surface for forming a seal with the external wall surface. An extension sleeve is available for thicker walls up to 500mm. (Stock Ref. 370419)


Filters should be replaced every six months or as conditions necessitate. Replacement filters can be purchased in packs of four. (Stock Ref. No. 37 03 78).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.

HR100W/HR100WH Filters

Power Consumption

 Trickle    12.0W  
 Boost    31.0W

Typical Specifications

Supply and install a HR100W/HR100WH single room through the wall heat recovery unit as manufactured by:

Vent-Axia Clean Air Systems
Fleming Way
West Sussex
RH10 9YX

Performance: m³/h l/s
Max ventilation rate 77.0 21.39
Normal Supply Rate 38.0 10.56
Normal Extract Rate 43.0 11.94
Boost Supply Rate 69.0 19.17
Boost Extract Rate 77.0 21.39
N° speed settings 2

Efficiency: The unit should retain up to 70% of the temperature differential of out going air.

Heat exchanger: Should be of a multi plate cross-flow type constructed out of a polymeric plastic with ultra sonic welded joints.

Motor: Should be a 2 speed 240V 50/60Hz A/C with sleeve bearings, greased for life. It shall operate up to an ambient temperature of 40°C and be fitted with a one shot thermal overload protective device.

Fan: The two polymeric fan impellers should be a centrifugal forward curved type, dynamically balanced mounted on a common shaft.

The unit should be operated via a remote Trickle Boost Switch or via various automatic sensors. A light switch can be used providing a 'timed out' device is employed.

Filter: Should be a washable reticulated foam type coarse filter.

Construction: The unit outer case is manufactured from white powder coated sheet metal with a white ABS internal grille and a grey UV stabilised PVC outer grille.

Sound Levels: dB(A) @ 3m
Trickle: 20.0
Boost: 30.0

Mains electrical supply: 230VAC 50Hz.

Complies to the following approvals/directives: VD, BEAB, EMC, CE.

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Weight: 4.85kg

370 270 220-280 68 155 235 190

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Provides balanced ventilation with heat recovery and is suitable for installation in bathrooms and WC’s. Up to 77m³/h capacity (balanced airflow).
Stock Ref No: 370373
Please call 0344 856 0590 for
further availability information.
With built-in Humidity Sensor A surface mounted heat recovery ventilation unit for use in bathrooms and toilets, meeting building regulations for this application. Up to 77m³/h capacity (balanced airflow).
Stock Ref No: 370375
Contact your relevant International Distributor for pricing and availability detailsPlease call 0344 856 0590 for
further availability information.
Model: 370419
Extension Sleeve - EXT100
For installation in walls from 280mm to 500mm thick. Supplied with white ABS plastic external grille.
Stock Ref No: 370419
Contact your relevant International Distributor for pricing and availability detailsPlease call 0344 856 0590 for
further availability information.
Model: 370378
Filter Pack HR100W/WH
Replacement filter elements comprising 4 filters for the HR100W/WH Single Room Heat Recovery Unit.
Stock Ref No: 370378
Contact your relevant International Distributor for pricing and availability detailsPlease call 0344 856 0590 for
further availability information.
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Vent-Axia are leading manufacturers and suppliers of heating and ventilation systems, both in the UK and around the world. For over 75 years, we have led the industry in air ventilation products, systems and services. Whatever your requirement, budget or setting, Vent-Axia can provide the solution you need. From extraction fans for the home to large commercial ventilation solutions, our wide HVAC range features a product for every air handling purpose.

Vent-Axia's popular Lo Carbon range combines all the style and durability you expect from a Vent-Axia product with even greater energy efficiency, helping you to make your property as eco friendly as possible. Together with the Lo Carbon range, demand energy recovery ventilation and heat recovery (HRV) and mechanical extract systems are also available to aid new sustainable building projects to adhere to the Code for Sustainable Homes.

In combination with our exceptional ventilation product range we also offer a comprehensive range of heating products ideal to heat your home, our range of electric heating includes, storage heaters and combination storage heaters,  panel heaters, towel rails, portable heating, fan heaters, convector heaters and radiant heating.  Our latest product introduction brings electric underfloor heating to the portfolio, this range consists of electric underfloor heating mats, underfloor heating thermostats, underfloor heating kits and underfloor heating insulation boards to offer a comprehensive solution.

In addition to our ever-growing domestic and commercial ventilation ranges, Vent-Axia also supply air curtains, hand dryer products and fume handling/smoke fans. We can also support your air conditioning requirements.

Vent-Axia products are available from distributors around the UK and Ireland and also around the world via our network of international distributors. Many of our ranges can also be ordered via our online store. Browse our full range of heating, ventilation and air conditioning products by clicking here. You can also contact us for any further enquiries.