Ground Source Heat Pump

The Background

A Greener Alternative were appointed by the client to design a heating system at their rural property in West Sussex that would replace an ageing oil boiler and utilise a more sustainable heating system for both their house and garage annexe.

Through conversations with the client and understanding their vision it was decided that a ground source heat pump with geothermal boreholes would be the most suitable solution to meet the needs of the property.

The Solution

Two NIBE F1145-12kW ground source heat pumps were specified to take care of all the heating and hot water requirements for the house and a single NIBE F1245R-6kW ground source heat pump with built-in hot water cylinder for the annexe. The units are all sited in the large garage beneath the annex installed neatly at the back end to further utilise space.

With an adjacent paddock forming the ideal site for the heat pumps ground collectors a series of six geothermal boreholes were drilled vertically down each hole between 100-150 metres in depth. The boreholes are connected to a central manifold and services run back to the property using pre-insulated header pipe.

With the boreholes drilled, connected and services run back to the garage where the heat pumps are sited there is now very little evidence that the boreholes and groundworks have even taken place. Now the borehole work is complete there is no need to access them in the future and all service access is made via the manifold.

The Result

The three NIBE heat pumps reside in the garage as shown below with the taller unit supplying heating and hot water to the annexe and the two smaller heat pumps working in tandem to provide for the main house.

The NIBE F1255-6kW unit feeding the annexe includes a built-in buffer tank and hot water cylinder which provides all the annexe requires by way of heating and hot water.

The NIBE F1155-12kW units utilise the buffer vessel sited to the right of the heat pump units to reduce cycling of the heating system and to further improve efficiencies. The heat pumps and buffer supply the heat pump hot water cylinder which is sited within the main house to take care of all the hot water needs for the home.

The Facts

Annual running cost of oil system: £2,820.00

Annual running cost of heat pump system: £1,760.00

Annual energy bill saving: £1,060.00

Air Source Heat Pump Small Cottage

The Background

This beautiful cottage in Kent was running a tired, unsustainable oil boiler to heat the property and the client wanted to drive down their energy costs whilst exploring a more ecological solution.

The Solution

A Greener Alternative have designed a system that utilises a single 3.5kW Vaillant AroTherm air source heat pump with a 150 litre hot water cylinder to provide heating to radiators and provision of all domestic hot water requirements.

The Vaillant air source heat pump which is situated neatly at the front of the property extracts heat from the outside air to provide heating and hot water to the home.

The Result

The client now runs their entire heating and hot water system from a state-of-the-art air source heat pump that is not only a more sustainable solution but also means they will never pay an oil bill again!

Air Source Heat Pump Semi Detached

The Background

This three-bedroom semi-detached property in West Sussex had an old oil boiler that was coming to the end of its life and required updating. Rather than opting for a replacement oil system the client wanted to explore the option of a more sustainable alternative in the form of an air source heat pump.

The Solution

A Greener Alternative have designed a system that utilises a single 8.5kW Mitsubishi air source heat pump with a 210 litre hot water cylinder to provide heating to radiators and provision of all domestic hot water requirements. The unit is sited at the front of the property with services running back into the house.

The Mitsubishi air source heat pump which is situated neatly at the front of the property extracts heat from the outside air to provide heating and hot water to the home.

The Result

The client now runs their entire heating and hot water system from a state-of-the-art air source heat pump that is not only a more sustainable solution but also means they will never pay an oil bill again!

Air Source Heat Pump Large Detached Cascade

The Background

This beautiful Grade II listed farmhouse in Kent had a dated oil system that needed upgrading and through discussions with A Greener Alternative various alternative options were explored before deciding upon a cascaded system of two air source heat pumps to provide heating and hot water to upgraded radiators throughout the property.

The Solution

A Greener Alternative have designed a system that utilises two MasterTherm Boxair 7-35kW three-phase air source heat pump units. The units are situated away from the property with services running back to the house via high-quality, insulated underground pipe. Internal works took place to upgrade radiators throughout the property with careful works undertaken to preserve the interior of the home.

The MasterTherm air source heat pumps which are situated away from the property extract heat from the outside air to provide heating and hot water to the home. The heat pumps (pictured above) have been hidden and protected by woven hurdle fencing in keeping with the properties surrounds (picture left) whilst allowing for appropriate air flow for maximum performance of the two  heat pump units.

The Result

The client now runs their entire heating and hot water system from a state-of-the-art air source heat pump that is not only a more sustainable solution but also means they will never pay an oil bill again!

Air Source Heat Pump Detached

The Background

The client approached A Greener Alternative to discuss the feasibility of replacing an existing gas boiler heating system with something more ecological. The client expressed an interest in an air source heat pump to provide heating and hot water to their newly renovated 5-bedroom property in Surrey.

The Solution

A Greener Alternative have designed a system that utilises a Mitsubishi Ecodan 11.2kW air source heat pump to provide heating services to the underfloor heating system and radiators throughout the property and all requirements for domestic hot water.

The Mitsubishi Ecodan air source heat pump is situated on the front of the property extracting heat from the outside air to provide heating for an underfloor heating system, radiators and domestic hot water.

The Result

The client now runs their entire heating and hot water system from a state-of-the-art air source heat pump that is not only a more sustainable solution but also means they will never pay a gas bill again!

Air Source Heat Pump House Boat

The Background

In one of the more unique requests A Greener Alternative were approached by the client to design and install a heating system on a houseboat in Shoreham, West Sussex.

The houseboat is one of the larger permanent residencies on the river and has been converted to provide living space in the form of four individual apartments.

Currently running on oil fired heating, the client wanted to replace this with a renewable heating system that could also utilise the array of solar photovoltaics (PV) sited on the top deck of the boat.

The Solution

A Greener Alternative have designed a system that utilises a NIBE F2040-16kW air source heat pump to provide heating and hot water for the entire boat and its residents. The solar PV array sited on the top deck of the boat generates a supply of electricity that offsets the running costs of the air source heat pump making the system even more sustainable.

The NIBE F2040 air source heat pump sits on the upper deck of the houseboat extracting heat from the outside air and provides heating for radiators and domestic hot water.

A Greener Alternative installed the NIBE F2040 air source heat pump on the upper deck of the houseboat alongside the existing solar PV array. The pipework drops down into a dedicated plantroom into a buffer vessel that supplies a series of radiators throughout the houseboat alongside two bespoke hot water cylinders that provide the domestic hot water.

The Facts

Annual running cost of oil system: £2,130.00

Annual running cost of heat pump system: £1,314.00

Annual fuel bill saving: £816.00

 

New Build, East Sussex

This eco property in East Sussex called in A Greener Alternative to design and install a ground source heat pump system to work with vertical boreholes. The boreholes were sited in the front driveway of the property during the build to minimise disruption and keep them well concealed. As you can see the 8kW NIBE heat pump is well situated in a utility room under the stairway with the hot water cylinder and buffer tank beside it, making good use of the space available.

West Sussex Home

A Greener Alternative were called in to design and install a system that could utilise access so the homeowners could their own woodland and an abundance of free fuel. The installation moved the property from its existing oil fired heating system to a state of the art Froling log boiler and buffer vessel all sited in a unique and stunning outbuilding. The services run underground back up to the property where the boiler takes care of the all the heating and hot water requirements of the home.

Retrofit, Surrey

This semi-detached property in Surrey used it’s existing oil-fired heating system to run a network of radiators throughout the house. The property owners wanted to move away from oil and A Greener Alternative designed and installed a ground source heat pump system to replace the existing set-up. Working in conjunction with two 120 metre vertical boreholes well concealed in the front lawn/driveway, the property now utilises the ground source system for all its heating and hot water requirements. The 12kW NIBE ground source heat pump can be seen here installed conveniently in the back end of the garage alongside a 300 litre hot water cylinder and 200 litre buffer tank.

Hampshire Refurbishment

This family home in Hampshire underwent a full refurbishment, with improvements to insulation and a move away from its old oil fired central heating system. A Greener Alternative designed the system and installed two 8kW NIBE air source heat pumps working in conjunction with underfloor heating, skirting heating and radiators to take on the heating and hot water requirements of the property.

To discuss the viability of retro-fitting an air source heat pump in your home call us now 01273 455 695.