(Discontinued) Kair Trakmaster Ventilator K-HRVF100

(Discontinued) Kair Trakmaster Ventilator K-HRVF100

Continuous Running, Energy Efficient, Heat Recovery Ventilator For Flats, Bungalows, Kitchens And Bathrooms

Product Features

  • Meets Building Regulations requirements
  • Up to 65% Heat Recovery
  • Easy to install (no external access required – 102mm core drill)
  • Whisper quiet Continuous running trickle ventilation
  • Humidity sensor (preset or adjustable)
  • Low running costs Tamperproof screws (optional)
  • Balanced or positive airflow
  • Energy savings
  • Security ventilation™ (no need to open windows)
  • Health benefit – produces dramatic improvements of indoor air quality

General Product Information

Kair™ Trakmaster KHRVF100 Heat Recovery Ventilators provide a continuous air change, replacing stale moisture-laden air with fresh, warmed air from outside. Kair™ Trakmaster KHRVF100 control condensation problems in small flats and bungalows and are an integral part of the Kair ‘Hybrid’ Heat Recovery Systems (See separate Data sheet).

Energy Efficiency

Unlike conventional extractor fans which suck out and waste expensively produced heat, Kair™ Trakmaster KHRVF100 Heat Recovery Ventilators recover up to 65% of exhaust heat, even when operating on boost mode. The world is becoming increasingly aware of the enormous cost of energy production, and this, plus the use of fossil fuels to generate power, is a momentous environmental issue. Extractor fans potentially waste over a million kilowatts of energy every year. This is comparable to the total output of two large power stations. Replacing conventional extractor fans with heat recovery systems could save at least half of that energy loss.

Health Dividend

As long ago as 1989, an article in the British Medical Journal referred to the health hazards associated with condensation and mould growth in dwellings. The Statutory Fitness Standard clearly states that dwellings with inadequate ventilation, condensation and mould growth problems are unfit for human habitation and Building Regulation Guidelines require a supply of fresh air and the removal of pollutants.


Kair™ units, by reducing humidity to optimum
levels (Kair Health Line™), eradicate condensation, prohibit mould growth and discourage the spread of bacteria, viruses and dust mite activity. By expelling dust particles, gasses and other household pollutants, the units create a dramatic improvement in the quality of the indoor air supply.

How It Works

Kair™ Trakmaster KHRVF100 Heat Recovery Room Ventilators provide a continuous air change, replacing stale moisture-laden unhealthy air with filtered, fresh, warmed air from outside the dwelling. The continuous controlling of Relative Humidity levels ensures that conditions will not exist in which condensation or mould growth problems can develop and thrive.



A variety of manual or automatic controls are available including: a) Two speed switch for manual override. b) Automatic switching two speed humidistat c) Independent switching for input or extract motors to vary pressures for Summer / Winter settings – internal bathrooms / kitchens variable life styles – multiple occupancy.

Installation Instructions

The Kair Trakmaster is designed for easy installation by use of 102mm core drilled holes. Installation is undertaken entirely within a building with no requirement for external access, thus reducing installation costs on high-rise applications. The Kair™ Trakmaster is factory set to provide a positive pressure facility to combat the ingress of radon gas and increase heat exchange efficiency. Full installation instructions are provided with the unit.

Product Specifications

Please see separate specification clause leaflet.

Product Maintenance

Filters should be removed at 6 to 12 month intervals subject to site conditions 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. Kair™ Trakmaster KHRVF100 Ventilator can be serviced and maintained from inside the building with no requirement for external access.

Electrical Safety

Installation can be carried out by a suitably qualified craftsman and connected to electrical supply by an electrician in accordance with IEE Regulations.


The unit meets Building Regulations.

Product Dimensions


Dimensions (mm)
a b c d e
380 290 185 100 50

Performance Specifications

Trickle Boost Daily
Airflow 33m³/h 100m³/h 1113m³/24h
Watts 11 55
dBA 23 42
Heat Recovery  Up to 65%

Typical Performance figures – Assuming an average of 80% trickle and 20% boost speed. Test with outside air temperature at 7°C and inside room temperature at 23°C


Ventilation is necessary to maintain a healthy and comfortable internal environment and to rapidly remove pollutants such as moisture, volatile organic compounds (VOC’s), allergens such as dust, oxides of nitrogen, carbon monoxide, carbon dioxide, tobacco smoke and unpleasant odours.

Moisture is generally assumed to be the most significant of these pollutants because of the high rates of generation from cooking, bathing, washing, drying etc and the consequential condensation and mould growth problems. It follows that if the ventilation strategy is based on controlling this principle pollutant by heat recovery input / extract ventilation then logically the other indoor pollutants will also be adequately controlled.

Stale air, and air which is hot or humid, should be replaced at a reasonable rate.

Good ventilation means providing a balance between energy efficient and healthy indoor air best summed up by the catchphrase ‘build tight – ventilate right’.

The fresh air supply rate should not normally fall below 5 to 8 l/s per occupant. This is best achieved by creating continuous air changes of 0.5 to 1.0 every hour, throughout the entire dwelling as specified in D.E.T.R. Good Practice Note 268.

Although Building Regulations relate to new buildings, the guidance on ventilation is applicable to existing dwellings and most important of all, the regulations are concerned with minimising the risk to health from the build up of pollutants. The KHRVF100 satisfies all of these criteria.

Available Accessories

Example ducting accessoriesStock Code: VariousFull ancillary list available on request kair ventilation accesories
Switch controlStock Code: KSC2
Two speed switch control
Humidity ControlStock code: HUMIDISTAT Automatic humidistat to switch ventilation modes humidistat
Hour meterStock code: HOURMETERTo verify continuous use or record interruptions to electricity supply hour_meter
Tamperproof bitStock code: TBITSecurity ventilation™ – to prevent interference by persons other than authorised service personnel 542-122
Tamperproof driverStock code: TDRIVERRequired to install unit 541-983
Pen size RH meterStock code: RHMTRMeasures the Relative Humidity and temperature levels 212-540


  • i. Statutory Fitness Standards – Housing Act 1985
  • ii. Department Of The Environment F1 Guidance – Means Of Ventilation
  • iii. Airborne Fungal Glossary – Basic Fact About Mould –TRD
  • iv. Housing Act – (COSHH) Control Of Substances Hazardous To Health Regulations – 1988
  • v. Optimum Relative Humidity Guide KTIC
  • vi. Building Research Establishment. Digest 297 ‘Surface Condensation And Mould Growth In Dwellings’
  • vii. NHS – A Health Strategy For London
  • viii. DETR – Energy Efficient Ventilation In Housing – Good Practice Guide 268 ix. Home Energy Conservation Act 1985 x. British Standards Institution. Bs 5250. ‘Control Of Condensation In Buildings’. BSI, London, 1989
  • xi. Perera M D A E S And Parkins L M. ‘Build Tight – Ventilate Right’. Building Services Journal, June 1992. – CIBSE, London, 1992 xii. Property Associated Technical Standards