Heat Pump Case Studies: Ground Source Heat Pump nr Peterborough

Property type: 5-bedroom, detached house in Peterborough, built in 1955

Product installed: Ice Energy IVT C11 HT + ground source heat pump

Distribution system: Underfloor heating

Installation date: October 2009

Previous heating system: Oil-fired boiler system

Cost savings: Estimated savings of £1,180 in first two years (almost 50%)

RHI benefit: £26,000 over seven years

After considering heat pumps for a number of years, David Hobbs installed a ground source heat pump from Ice Energy in 2009 at his 5-bedroom, detached property in Stilton fen near Peterborough. The heat pump was combined with an underfloor heating system. Following the launch of the Renewable Heat Incentive (RHI), Mr. Hobbs is in line to receive payments of £26,000 over seven years.

What prompted you to investigate heat pumps?
"My oil-fired boiler had worn out and was very expensive to run. I'd intended to use a heat pump 30 years earlier but had run out of funds which was a shame as I'd always liked the idea of having one."

How did you find the installation process?
"The installation wasn't difficult it was just lots of work as I undertook this myself. The worst bit was wheel-barrowing 60 tonnes of sand for the ground loop."


The groundworks for the ground loop used by the ground source heat pump

What has it been like living with heat pumps?
"I made two or three adjustments in the first year but none since then and have been delighted with the performance. The entire house is now heated 24 / 7 and my 11kW system has worked flawlessly through several really cold winters."

What impact has the heat pump had on your running costs?
"In the first two years the estimated savings were £1,180 (almost 50%) compared to the previous oil-fired boiler system."

How have you benefitted from the Renewable Heat Incentive (RHI)?
"At long last my RHI application has been completed successfully and my first payment is scheduled for 3rd August 2014.

"The application process wasn't without its problems which included an issue with he Ofgem website so it was a bit of a rocky journey for me but I now look forward to receiving my £26,000 payout (plus inflation) over the next seven years.

"When I decided to install a heat pump I hadn't even heard of the RHI so my decision to buy was purely based on other factors, particularly the anticipated lower running costs (my previous system was oil) and reduced maintenance costs.

"The introduction of the RHI for me is just a free bonus and I was delighted to find I just fitted into the allowable time frame for legacy applicants (my installation date was October 2009 and the cut-off date is July 2009). This made a nice change from the Feed-in-Tariff where I missed out by installing my wind turbine too soon)."

What would you say are the benefits of heat pumps?
"The running costs are substantially lower and the heat pump requires minimal maintenance. The entire house is always warm and the unit has long life expectancy so won't need replacing for many years to come. Then there are the RHI payments which as I've already mentioned are an added bonus."

Why did you choose Ice Energy as your ground source heat pump provider?
"I was able to get all the equipment from one supplier with a proven track record. The performance guarantee and equipment warranty were also major factors in my decision as was the fact Ice Energy were willing to work with a DIY installation."

What has the service been like from Ice Energy?
"The service has been first class. I found Ice Energy to be a highly professional company who provided excellent telephone support during my installation.

"All the delivery dates were met and commissioning was completed within half a day. They supplied me with high quality components and provided first class service.

"I would, and frequently do, recommend their services to others."

Solutions Used

  • C11 HT + ground source heat pump
  • 600 metre trench system houses ground loop

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