Heat Pump & Solar PV Case Study – Lincolnshire

1960s Bungalow

Retrofit Air Source Heat Pump and Solar PV

Technology Used:

  • Air source heat pump
  • Underfloor heating
  • Mechanical Heat Ventilation

Building Type: 1960’s Bungalow

A Lincolnshire couple interested in Solar Photovoltaic panels for their 130m2 1960s bungalow, approached us for information of what we would recommend. The couple had a keen interest in gaining returns from their own production of energy and controlling their energy costs, particularly as they were semi-retired.

During our initial survey we introduced the idea of a Heat Pump due to the size and characteristics of the property and their need to replace an ageing oil boiler. An Air Source Heat Pump installation would provide another solution to allow the couple to benefit further from renewable energy technology and would work in synergy with the Solar PV.

Following the survey, we provided estimates for the installation of Solar PV and a Heat Pump along with energy performance and return on investment calculations. Coupled with the Renewable Heat Incentives payments available, the customers decided to go ahead with installing both Solar PV and an Air Source Heat Pump.

The PV installation was interesting due to the mix of a standard pitched south-facing roof as well as making use of a large flat roof.  We installed 16 solar panels, 8 with black surrounds on the pitched roof at the front of the property and 8 standard panels on a Hilti Flat Roof Mounting system at the rear, controlled by a Power-One inverter.  The panels mounted on the flat roof were installed on angle braces at a low angle of 10o to stay within planning guidelines.

The old oil boiler, cylinder and loft tanks were removed and were replaced with a Dimplex Air Source Heat Pump along with a combined cylinder and buffer tank, which was located in the garage to free-up space in the house.  The team replaced 4 radiators to ensure there was sufficient heat transfer into the house from the lower temperature operation of the heat pump.  As a side benefit, the hot water subsequently operated at mains pressure rather than the trickle the customers had been used to from their original gravity fed system.

“Excellent installers and a well-managed project.  Would have no hesitation in recommending Mark Roper and his team to anyone”

Financial Benefit

Combining PV Solar panels with the Air Source Heat Pump resulted in substantial reductions in heating and hot water bills.  Having the two systems running together enabled the couple to directly use the electricity generated by the solar panels to drive the heat pump on sunny days.

Air source heating

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4 Sherwood Network Centre
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Ollerton
Newark
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01636 555 011

info@trusted.energy