Exhaust Air Heat Pump Installation

All-in-one air source heat pump

Exhaust air heat pump installation can reduce your carbon footprint and save you money on your energy bills. Absorbing heat from waste air as it exits the home, our exhaust air heat pump system traps and converts this into useful heat energy for domestic hot water. Able to work alongside a conventional boiler, exhaust air heat pumps provide hot water production and storage usually during the summer months. Thereby, significantly reducing your carbon footprint.

Microgeneration Certification Scheme accredited, Alternative Heating Solution are Daikin and Samsung approved installers of air heat pumps and are able to install pumps produced by other manufacturers.

Benefits of Air Heat Pump Installation Include:

  • Use of an air heat pump system can significantly reduce your energy bills as you are capturing and redirecting existing heat.
  • Generating energy using heat in waste air takes advantage of natural resources reducing reliance on fossil fuels.
  • Air heat pumps are able to extract heat from air temperatures as low as 15 degrees.
  • Unlike many of their alternatives, air heat pumps are not at risk of combustion or of emitting harmful gases. Therefore, they are safe and require far less maintenance.
  • The unit can directly replace the existing direct/indirect hot water cylinder when used in conjunction with existing conventional boilers.
  • During the non-heating season, it can be used as the sole hot water cylinder heat pump with the secondary boiler not in use at all.
  • Compatible with solar energy, the unit can work with solar thermal panels (Model-S) or with solar photovoltaics (all models).
  • Easy integration with Photovoltaic Panels is possible via a dedicated solar controller (supplied separately).
  • Air heat pumps compliment underfloor heating systems as they are both optimised to run at a lower water delivery temperature

Book an appointment with us to learn more about whether exhaust air heat pump installation can benefit your home.

Technical Data Table

110 200 200-S 200-D 300 300-S 300-D
power supply (V/Ph) 220-240/1/50 Hz 220-240/1/50 Hz 220-240/1/50 Hz 220-240/1/50 Hz 220-240/1/50 Hz 220-240/1/50 Hz 220-240/1/50 Hz
water tank volume (L) 110 228 220 217 286 278 273
(1) heating capacity (Watt) 850 (+1500*) 1870 (+1200*) 1870 (+1200*) 1870 (+1200*) 1870 (+1200*) 1870 (+1200*) 1870 (+1200*)
(1) power input (Watt) 400 (+1500*) 503 (+1200*) 503 (+1200*) 503 (+1200*) 503 (+1200*) 503 (+1200*) 503 (+1200*)
(1) absorbed current (A) 1.81 (+6.5*) 2.23 (+5.2*) 2.23 (+5.2*) 2.23 (+5.2*) 2.23 (+5.2*) 2.23 (+5.2*) 2.23 (+5.2*)
COP (W/W) 3.01 3-72 3-72 3-72 3-72 3-72 3-72
(2) energy efficiency A+ A A A A A A
max. water temp (°C) 70° 75° 75° 75° 75° 75° 75°
(3) duet diameter (mm) 125 177 177 177 177 177 177
immersion healer element (kW) 1.5 1.2 1.2 1.2 1.2 1.2 1.2
primary heat exchanger (m2) 1.2 1.2 1.2 1.2
secondary heat exchanger (m2) 0.5 0.8
net weight (kg) 72 98 113 121 106.5 121.5 129.5
net dimensions (mm) 5O0x520x14O6 ϕ654×1638 ϕ654×1638 ϕ654×1638 ϕ654×1888 ϕ654×1888 ϕ654×1888
IP protection class IPX1 IPX1 IPX1 IPX1 IPX1 IPX1 IPX1
(4) sound pressure (dB(A)) 48-5(5) 58.2(4) 58.2(4) 58.2(4) 58.2(4) 58.2(4) 58.2(4)

* Related to the supplementary imersion heater. During disinfection, the water temp is increased to 70°C by imersion heater.

  1. Capacity and power input based on the following conditions: ambient temperature 20°C, water temperature from 15°C to 55°C (Data obtained from interna I laboratory tests in uniform reintegration of the temperature of the tank!
  2. Heating energy efficiency class, load profile: L. Refers to indoor air (+20°C;. Reg. UE 812/2013.
  3. The ducting can be reduced from 177 to 160 mm by inserting a reducer (supplied separately).
  4. Measured according to EN 12102 standard in the conditions of EN 16147.
  5. According to EN 12102: ducted unit in/out 2m.

Technical Features

  • Steel tank with double layer vitrification.
  • Anti-corrosion magnesium anode rod
  • Condenser coil wrapped externally to the water tank, no way of refrigerant-water contamination
  • High density polyurethane foam (PU) thermal insulation
  • Outer shell made of grey colour (RAL 9006) plastic materiał
  • Acoustically insulating top cover
  • Highly efficient compressor with the R134a refrigerant
  • High and low gas pressure protections
  • lmmersion heater built-in the unit as a back-up (with integrated thermo cut out protection set to go”C),
    assuring constant hot water even in extremely cold weather
  • ON-OFF relay for external controller connection
  • Weekly disinfection cycle (legionella prevention)
  • Optional connection for hot water re-circulation or solar water integration (dedicated temperature probe connection, flow switch input and external pump controller)
  • Electronic expansion valve for precise control of refrigerant
  • Ducting inlet/ outlet 177mm diameter

lndicative lnstallation Methods

Exhaust air heat pump

Air source heat pump

Air source heat pump in a block of flats


  • No external condensers, no issue with plant on roofs;
  • No refrigerant riser required
  • No external noise, no need for acoustic enclosures – as with external condensers
  • No need for mains gas: no gas riser, gas meter rooms/cupboards, no costs for new uti lity connections/trenching/builders works, riser walls, fire doors, fire proofing/stopping etc.