Case Studies

Take a detailed look into some of our projects and the results achieved

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A detailed look

Our Case Studies


GORSE HILL

The background

Gorse Hill is a rural, four-bedroom, two-bathroom home situated in an off-grid location just 100m from the edge of the Devil’s Punchbowl in Surrey. Space heating and hot water was previously provided by an expensive and inef-ficient electric system. With electricity bills continuing to rise, owners Colin and Sally Taylor were looking to find a more cost-secure alternative – and one that would fit unobtrusively in the bungalow’s compact utility room with minimal plumbing work. The couple approached local heat pump specialist and NIBE VIP Installer Mark Freeman, ope-rations director at Source Heat Pumps, for the answer.

Solution

After looking into several different options and system components, Mark and the Taylors decided on a 12kW NIBE F2040 air source heat pump and VVM320 indoor unit combination, which uses heat from the outside air to pro-vide efficient heating and hot water.

The couple’s bungalow was the first home in the UK to be fitted with the VVM320 – NIBE’s complete plug-and-play indoor unit. Because of its compact, all-in-one nature, the VVM unit fitted easily into the utility room, meaning the hot water storage cylinder and user-friendly controls are all found in one place. To ensure the system was set up for best results, Mark advised the Taylors to fit insulation and underfloor heating, which runs at a similar low flow temperature to the F2040 package. The major renovation project has also seen the couple fit solar PV panels that provide green electricity.

Results

Since the project’s completion, a Green Deal Assess-ment has shown that the improvements have taken the property’s efficiency up to just below an A rating (where it was previously rated at E).

As well as being less expensive to run, the Taylors were also able to claim a grant towards the up-front cost of the F2040 system under the Renewable Heat Premium Pay-ment (RHPP) scheme, and expect to qualify for ongoing annual payments of as much as £896 for seven years th-rough the Renewable Heat Incentive (RHI).

GREENCROFT

The background

Greencroft is a 19th century farmhouse in Kirkby, North Yorkshire. Owners Pat Battle and Duncan Kirkby, a retired couple, were looking for a more cost-effective alternative to replace their two old oil boilers, which were very inef-ficient and costly to run. Having heard about NIBE heat pumps from a friend at the local bridge club, they ap-proached Yorkshire renewable heating specialist and NIBE VIP Installer HT Energy for advice on the best setup for their five-bedroom, two-bathroom property.

Solution

Howard Tribick, director at HT Energy, specified, designed and fitted a NIBE F2040 air source heat pump package sys-tem after carrying out a full site survey and heat loss cal-culation for the property.

The new system is made up of two 12kW F2040 air source heat pumps, a 300L NIBE Titanium Megacoil hot water storage cylinder and NIBE SMO40 intelligent controls. As part of the install, the loft, walls and floor of the farm-house were insulated and extra double glazing was fitted. This brought the property to a modern heat-loss standard so that the heat pump could perform to its optimum effi-ciency. Since the F2040 works to a lower flow temperature than the property’s previous system, HT Energy also fitted underfloor heating and re-sized all the radiators for a maxi-mum flow temperature of 45°C.

Results

The system is now fully up and running. As well as pro-viding a consistent supply of comfortable heating and readily available hot water, it is also expected to cut the farmhouse’s bills by more than £1,800 per year compared to the previous oil-based system.

Early calculations also show that the system could qualify for annual payments of up to £1,609 for seven years under the government’s Renewable Heat Incentive (RHI) scheme, making it even more cost-effective in the long run.

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