Air Source Heat Pumps

Air Source Heat Pumps

Green Warmth are experienced installers of Air Source Heat Pumps, enabling customers to benefit from environmentally friendly heat generation.

As MCS accredited installers, you may also be eligible for the new Boiler Upgrade Scheme (BUS). Please see the scheme rules and terms here.

We are premium installers of the market leading Stiebel Eltron products with the highest level of efficiencies and a fantastic 7 year parts and 2 years labour warranty.

We are a premium business solutions partner for Mitsubishi Ecodan in Pembrokeshire, Carmarthenshire and Ceredigion. We are also members of their partner program which ensures we and our customers receive excellent before and after sales support. As pro partners we can also provide a 5 year warranty for the heat pump and 3 years for the water cylinder.

As well as home owners, increasingly companies are looking to reduce their overheads and meet their own carbon emissions targets.

How do they work?

An air source heat pump extracts heat from the outside air in the same way that a fridge extracts heat from inside. Heat can be taken from the air at temperatures as low as -20°C.  This can then be used to heat homes via radiators or Underfloor Heating systems and satisfy hot water demands. To support your carbon neutral aspirations, pairing a heat pump with solar panels which creates electricity from the sun becomes a very attractive cost effective renewable solution.


  • Boiler Upgrade Scheme grants available (terms apply).
  • Lower carbon emissions
  • No fuel deliveries needed
  • Can heat your water as well as your home
  • Works with underfloor heating as well as traditional radiators
  • Minimal maintenance required

Green Warmth is Wales longest serving MCS accredited company for renewable heating.

Established in 2007, Green Warmth is a family owned and managed West Wales based independent installer and supplier of renewables. As a trusted MCS accredited installer for heat pumps, solar PV and battery storage solutions, our clients have access to the Boiler Upgrade Scheme (BUS) and solar PV export tariffs.