Stiebel Eltron’s Air Source Heat Pump Helps Achieve £15 a Year Energy Bills for Home-Owner

Stiebel Eltron UK heat pump technology is helping to keep energy bills to just £15 a year for a North West home-owner and self-build architect.

Colin Usher with his Stiebel Eltron heat pump

Colin Usher an architect and director at Liverpool-based John McCall Architects, incorporated Stiebel Eltron’s heat pump technology in his new-build property – a four bedroom house in West Kirby that he designed himself. Colin demolished the original property on-site and developed a new home, at a total cost of £240,000. The new-build property has been designed as an eco-home, with minimal energy usage.

The private house comprises an insulated masonry and concrete structure, under floor heating, triple glazing, LED lighting, heat recovery ventilation and an air source heat pump.


Stiebel Eltron’s WPL15 air source heat pump is an integral part of the property’s energy efficient operation. The WPL15 AS product was developed by Stiebel Eltron UK to meet the bespoke requirements of the UK market. The range is Stiebel Eltron’s most compact yet and offers optimal efficiency using a single phase supply. All component parts of the machine have been optimised to suit UK demands and the pump has the best seasonal performance on the market in its class.

The heat pump, supplemented by the use of solar panels, is now providing all heating and hot water energy requirements for Mr Usher’s home.


As a result of the air source heat pump, savings of £1800 per year are being made against traditional fuel sources- contributing to Mr Usher’s exceedingly low energy bills. The house has now been occupied for two years and the energy cost for heating, lighting, hot water and cooking was less than £15 per year for this period.

The £15 yearly energy costs are so low, in fact, that the property has received national media attention, featuring in the Daily Mail and on BBC broadcast and online channels. In addition, the project was recently hailed as the winner in the Domestic New Build category of the Buildings and Energy Efficiency Awards 2015.

Commenting on the energy savings reaped by installation of the Stiebel Eltron heat pump, Mr Usher said, “We are delighted with our new home and to have won the Domestic New Build category of the Buildings and Energy Efficiency Awards 2015 because it proves eco homes don’t have to be over expensive or need to be conspicuously unconventional in appearance. The property is very comfortable to live in and its appearance is not incongruous with surrounding houses. This is helped by Stiebel Eltron’s air source heat pump – which is unobtrusive and makes barely any operation noise. Our home dispels the myth that an eco-driven home needs to be expensive and radically different in appearance.”

Managing Director of Stiebel Eltron UK, Mark McManus added, “We are always very heartened to hear positive stories from our customers and Mr Usher’s is an exceptional one. We have every confidence in our technology when it comes to delivering efficiency and savings for the domestic market. Heating your home and enjoying constant levels of comfort shouldn’t cost the Earth and Mr Usher has done a fantastic job of proving that.”