Minus 7
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Minus 7
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. Using the best of solar thermal, photovoltaic, heat pump and energy storage technologies in one unique hybrid heating solution.

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.
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An industry leading, award-winning designer and manufacturer of building-integrated renewable heating systems.
People are taking notice of Minus7 as a company that chases seemingly crazy ideas and overcomes seemingly invincible obstacles to put them into action.
A company that offers the most innovative of all renewable heating technologies available today and is constantly pushing the boundaries of what can be achieved in the energy market.
We build long term relationships with our clients - helping housing associations, developers, architects and innovators to award-winning success.
Minus7 uses the best of solar thermal, photovoltaic, energy storage and heat pump technologies in a single integrated solution.
All components fully tested and warranted, a truly durable long term investment in renewable energy.
The Basic Model provides a pre-warmed supply of water to feed into an immersion cylinder or other similar water heater.
The Standard Model provides an instant supply of hot water to your taps at 40 - 45°C.
The hot water passes through a UV Purifier to kill bacteria.
Our experienced consultants work with you from concept to completion to ensure that all aspects of the design and construction of the Minus7 renewable heating system is matched to specifications.
Our highly trained engineers install and commission the system in keeping with the design of the building; professionally integrating the roof, discretely burying both storage tanks within the boundaries of the property.
Once installed, our expert team remotely monitor the Minus7 renewable heating system using data collected via a data logger built into the Solar Energy Processor.
The whole system is optimally designed to maximise the thermal energy absorbed from ambient conditions, thereby maintaining a comfortable indoor temperature of 21c with minimal ongoing costs.
Our ingenious Tileplanks form a natural looking, aesthetically pleasing roof.
They cannot be differentiated from a standard roof at road level, and are treated to repel moss and lichen growth.
Minus7 boasts an impressive, better than 180g of CO2 per kW heat delivered - up to 50% lower than traditional energy supply methods.
The Minus7 System has been very carefully designed and conceived, with ease of use and aesthetics in mind, as well as ethical responsibility at heart.
Not only will the System be sympathetically integrated into the building, but it is extremely simple to use - it is an autonomous plant that performs self-health checks, requires no user control, and is remotely monitored by our team of technicians.
The stand-alone System has no equipment inside the dwelling, except for a familiar thermostat style controller and timer, and System Status Panel which shows you the amount of energy delivered and consumed (instantaneous, daily and cumulative) as well as information on the status of the System.
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