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aroTHERM air source heat pump

Air-to-water heat pump

  • MCS accredited
  • Suitable for domestic and commercial properties
  • Blue fin coated evaporator as standard
  • ErP rated A++
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aroTHERM is Vaillant’s second generation air-to-water heat pump range. Developed in-line with the exacting standards and precision engineering you would expect when you choose Vaillant, aroTHERM is MCS accredited.

aroTHERM heat pumps can be integrated into domestic heating systems with ease, causing minimal disruption to the homeowner. They also eliminate the need for on-site fuel storage and can be used as part of an efficient all-electric heating solution. Furthermore, aroTHERM offers excellent energy savings compared to alternatives like standard electric, LPG or oil, especially as all Vaillant heat pumps are MCS accredited and may therefore be eligible for government funding. They can also reduce carbon emissions, whilst offering a more sustainable heating solution than oil and LPG sources.

Features and benefits:

  • Four models - aroTHERM 5kW, 8kW, 11kW and 15kW
  • Compact size for easy siting - Possible to fit 5kW, 8kW and 11kW models under a standard window
  • Quiet operation - Sound power as low as 58dB(A) (5kW) with permitted planning available as low as three metres
  • Blue fin coated evaporator with anti-hydro coating - Gives improved performance and extra protection against corrosion
  • Ability to cascade up to seven aroTHERM heat pumps - Suitable for larger domestic and commercial properties
  • Solid case design with in-built anti-vandalism measure - No requirement for extra vandalism cages



Technical dataUnit5kW8kW11kW15kW
Product dimensions (W x D x H)mm970 x 408 x 8341,103 x 463 x 9751,103 x 463 x 9751,103 x 463 x 975
Net weightkg86102126165
Maximum start-up currentA16162025
Sound power level for A7W55 according to EN 12102 and EN ISO 9614-1dB(A)58606666
Maximum DHW flow temperature°C60636363
ErP rating (@ 35°C) bandA++A++A+A++
ErP rating (@ 55°C) bandA+A++A+A+
MCS SCoP performance table
35°C 4.064.583.463.89
40°C 3.664.223.073.34
45°C 3.253.862.682.79
50°C 3.143.402.602.72

For further details on the specifications of this product, please download the Technical Specification table here (742 kB).

Related Products

Related Products

uniSTOR heat pump cylinders

  • Fully compatible with the Vaillant heat pump range
  • Range of options and accessories to cater for a wide range of projects and requirements
  • Superior insulation and efficiency

VRC 700 & VRC 700f

  • Takes care of all Vaillant equipment automatically by intelligently communicating with all Vaillant appliances
  • Flexible time programs
  • Clear, high contrast backlit display

Heat exchanger module

  • Designed to be used with the aroTHERM heat pump range
  • Reduces the amount of glycol needed for a complete system
  • Wall hung and compact for easy siting


How to get

Request a quote

Vaillant renewable products and accessories are available over the counter or as a next day service at most plumbing and heating merchants throughout the UK.

We can provide you with bespoke solutions to accommodate a variety of installations. To discuss your requirements please contact us.