Join the heating revolution.



Minus7 delivers low cost zero net carbon heating and hot water to housing associations, developers, architects and innovators.


Optimised for the UK climate, Minus7 renewable hybrid technology is aesthetically pleasing, harvests renewable energy 24/7 and generates savings for decades to come. 


Award-winning heat delivery performance guaranteed.



How it works

Using the best of solar thermal, photovoltaic,

heat pump and energy storage technologies in one

unique hybrid heating solution

The Solar Energy Processor

The Minus7 renewable energy heating system  provides a Roof, Solar Energy Processor (SEP) and Energy Storage.


Heat collected from the roof is transferred to energy stores via heat exchangers in the Solar Energy Processor.


The Solar Energy Processor transfers heat from the energy store to your chosen central heating emitters and domestic hot water circuit via heat exchangers.


The Solar Energy Processor contains a heat pump which upgrades the temperature in the energy stores if required. It is independent of demand.


The Solar Energy Processor ensures heat and hot water is consistently available to buildings 24/7 365 days a year.


Recent Projects

  • Walthamstow & Chingford Almshouse delivers low-cost heat for sheltered housing with Minus7
  • UKSA reduces running costs of their indoor swimming pool with Minus7
  • Drum Housing helps family of seven out of fuel poverty with Minus7
  • Drum Housing Association achieves 75% C02 reduction & provides affordable warmth with Minus7
  • Poole Housing Partnership delivers on its promises with Minus7
  • Grade II listed building is an exemplar of sustainable innovation with Minus7
  • 1930s Art Deco Townhouse totally transformed with Minus7
    Isle of Wight
  • Lomax Builders Ltd breathe new life into St Mark’s SchoolHouse with Minus7