ASHP Cost

A well-insulated 3 bed semi-detached house will have a heat loss of about 10,000 kWh of heat energy per year, and an average family will use about 3,800 kWh for domestic hot water.

To produce this amount of heat energy you will need to install a heat pump that can produce a minimum of 5kW heat energy – with a COP (Coefficient of Performance of at least 3.0/3.5.

There are over thirty heat pump manufacturers registered on the Microgeneration Listin the UK and the cost of a typical system using say the Mitsubishi Ecodan as an example – will be from about – £2,500. You will in all probability need a new hot water cylinder which is suitable for an air source heat pump.

If you are not using a cylinder supplied by the heat pump manufacturer, make sure it is copper and has a heat exchanger coil surface area at least two metres squared.  For 180L unvented (pressurised cylinder) expect to pay between £700 and £1000.

Total breakdown for the cost of a full system:

Heat Pump and Unvented Cylinder – £3,500

Installation and commissioning including all accessories – £2,500

When you have a quote from a local plumber or a national company, make sure they include ALL of the costs including electrical installation work and plumbing.  If you are told the system can be installed in a just a few hours it probably means they are not quoting for the complete installation.  To fully install a heat pump and cylinder, retrofitting into your existing system, commissioning and instructing the customer – this will take at least two working days.

ACS Renewable Solutions Ltd are heat pump specialists and provide a free survey to check you are installing the right size system.

Here’s a list for the Mitsubishi Ecodan that will include:

• Unvented Copper Cylinder
• Magnetic Particle Filter
• Flow Temperature Controller (FTC) with PAR-W21MAA and TH1 flow sensor
• 2 zone valves
• Room thermostat & receiver (wireless)
• 7 Day programmer, 24 hour – 2 channel timer
• Unvented store expansion vessel
• 3kW DHW back up immersion heater
• 7 day programmable immersion timer
• Flow meter
• Flexible connection pipes
• 1 x DHW zone valve
• 2 x circulating pumps
• Control relief valve
• Cylinder stat

Air Source Heat Pumps  must be fitted by a MCS registered installer to meet building regulations and to qualify for any available grants and government feed in tariffs.

The installation has a minimum 5 Year Warranty and annual maintenance is provided free in the first year.  Air Source Heat pumps must be fitted by a MCS registered installer to meet building regulations and to qualify for any available grants and government feed in tariffs.