Warm Air Boilers

Warm Air Central Heating

Warm Air Boilers


Johnson & Starley's all new WarmCair range of Super-Efficient condensing Warm Air Central Heating appliances (10kW to 46kW)

Building on our position as market leaders in the Warm Air Heating Industry and using the latest proven cutting edge technology, the WarmCair range of Condensing Warm Air Heaters have been designed to offer exceptional reliability, unrivalled efficiency and warmth combined with low carbon emissions and low operating noise levels. Patent approvals applications are in place for Europe and the USA and Canada.

Available with or without Domestic Hot Water (DHW) and in either upflow or downflow models, the WarmCair range offers a host of upflow or downflow models, the WarmCair range offers a host of energy saving features Suitable for upgrades and new build the WarmCair range can replace any existing warm air heater, and with installations generally being possible in less than a day disruption is kept to a minimum

Having a Thermal efficiency of up to 98%, indications from our field trials have shown savings in gas consumption of up to 28%. The savings are dependant upon usage, lifestyle, property size, insulation values and fuel costs.

This is without doubt our most innovative Warm Air Heater development and with the range going up to 46kW units for the first time, they will be capable of meeting commercial heating requirements in schools, nursing homes, small hotels, retail outlets, sports halls and community centers.


The New Range of Condensing Warm Air Central Heating use the latest technologies available resulting in reduced running costs, noise, and emissions.

The sophisticated controls enable the precise amount of heat output to match the demand and being a condensing appliance, it uses less energy to produce the required heat output as it uses more of the energy input when compared to a similar sized non-condensing heater

  • Warmcair downflow. 3 models available 10kW - 26kW (C10D, C16D and C26D) output range with modulating control in most cases will fit existing plenum.

  • Warmcair upflow. 1 model available 16kW (C16U) output range with Modulating control in most cases will fit existing plenum

  • WarmCair downflow models with domestic hot water. 3 Models available 10KW - 20kW (C10DW, C16DW and C20DW) output range with Modulating control

Aquair Heat Interface

Aquair Heat Interface


  • DAH1 not required to install.
  • Mix warm air heating and wet system.
  • Can be used to heat extensions.
  • Utilises original ductwork.
  • Cleanflow electronic air filtrations system compatible
  • Optional summer air flow


  • Air circulation fan with EC technology
  • Up Flow and Down Flow models
  • Compatible with a wide range of heat sources
  • Mesh air filter as standard

Aquair Heat Interface models 5 models available 10kW - 36kW (S10, S16, S20, S25 and S36) in most cases will fit existing plenum.