Air Source Heat Pumps and Biomass Systems

With over 30 years experience of working with heat pumps, GSM Limited was the first company in Gloucestershire to obtain MCS accreditation back in 2009 and since then we have made it our mission to offer our clients the very best advice and service. We are constantly seeking out the latest technologies in this sector so that we can pass on these benefits to our customers. Our Head Office is based in Newent, Gloucestershire and we provide local coverage and advice for Renewable Energy, serving the communities across three counties. Please see our case study page covering examples of our projects from Gloucester to Hereford.

Heat pump boilers offer a fantastic alternative to fossil fuelled boilers and now with the recent confirmation of the domestic RHI tariff, not only do you benefit from reduced energy bills but you can also benefit from a tax free payment of 19.33 p/kWh for your ground source heat pump and 7.51 p/kWh for your Air Source Heat Pump installation. See our RHI section for more details

Air Source Heat Pumps

An Air Source Heat Pump is the simplest and least expensive heat pump system to install. It’s a stand-alone unit which can be placed outside your premises. Air Source Heat Pumps don’t require any digging or underground pipework. Most domestic units are roughly the size of an air conditioning unit. An Air Source Heat Pump draws heat from the outside air and will provide 100% of your heating and hot water, even when the outside air temperature is well below zero.

We have installed hundreds of Air Source Heat Pumps locally, so we can always arrange for you to meet our customers and speak to them first hand about how great they are and how glad they are that they ditched the smelly old oil boiler!

With our own plumbers and electricians we can supply Underfloor Heating and New radiators as part of the total service that we deliver.

Example of what a 4 bedroom detached property can expect when changing an existing oil boiler form an Air Source Heat Pump:

Average Cost of heat pump installation £8,000.00                                                             Estimated RHI payment over 7 years  =  £9,800.00                                                           Estimated fuel savings over 7 years   =   £4,900.00

Total Saving Over 7 Years = £ 6,700.00

Bringing new technology, improved home heating and hot water to our latest customers in Cirencester.

Bringing new technology, improved home heating and hot water to our latest customers in Cirencester.

Ground Source Heat Pumps

Drawing as much as 75% of the energy needed by the heating system from freely available, inexhaustible solar energy stored in the earth, our Ground Source Heat Pumps are available in an extensive range of models types and capacities suitable for either domestic or commercial applications. Due to highly stable temperatures below the earth’s surface, ground source heat pumps provide high levels of efficiency for space and water heating all year round

Average Cost of heat pump installation £15,000.00                                                           Estimated RHI payment over 7 years  = £26,600.00                                                           Estimated fuel savings over 7 years =   £6,650.00

Total Saving Over 7 Years = £18,250.00

GSM Limited have many Ground Source Heat Pump Installations for you to visit and speak with the owners to find out how these systems can be fantastic for your home and you!

Kensa Ground Source Heat Pump installed by GSM Limited - Now with up to £1,000 Cash Back Offer!

Kensa Ground Source Heat Pump installed by GSM Limited – Now with up to £1,000 Cash Back Offer!

Solar Thermal

Solar water heating systems use free energy from the sun to heat domestic hot water. Solar thermal systems are eligible for the Renewable Heat Incentive (RHI)

The primary heating system  or immersion heater is then used to back up the system to provide hot water when solar energy is unavailable.

Many people have the misconception that solar panels will not work sufficiently in the UK as we don’t get enough sun; this isn’t true, in fact the UK receives 60% of the solar energy or radiation that the equator receives.

On sunny days, temperatures of 70 to 90°C can be reached. Even on cloudy days in winter, some hot water will be produced as the system utilises heat rather than light.

Average Cost of heat pump installation circa £3,100.00                                                   Estimated RHI payment over 7 years  = £3,010.00                                                           Estimated fuel savings over 7 years =   £700.00

Total Saving Over 7 Years = £610.00

GSM Limited recently installed a brand new Solar Thermal System for a home in Longhope, Gloucestershire complementing the existing solar panels.

GSM Limited recently installed a brand new Solar Thermal System for a home in Longhope, Gloucestershire complementing the existing solar panels.

For more information on the wide range of products and services that we can offer please call Paul O’Connor on 01531 – 828 782.


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GSM Limited provide advice and guidance on all energy products such as Solar Panels, Air Source Heat Pumps and Ground Source Heat Pumps across Gloucestershire, Herefordshire and Worcestershire, and the surrounding areas that include, Worcester, Droitwich, Tewkesbury, Cheltenham, Stroud, Dursley, Stonehouse ,The Forest of Dean, Cirencester, Newent, Hereford, Ross-on-Wye and Ledbury.

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