To tell if a ground source heat pump is right for you, there are a few key questions to consider:
Is my home well insulated?
Since ground source heat pumps work best when producing heat at a lower temperature than traditional boilers, it’s essential that your home is insulated and draught-proofed well for the heating system to be effective.
What fuel will you be replacing?
The system will pay for itself much more quickly if it’s replacing an electricity or coal heating system. Heat pumps may not be the best cost effective option for homes using mains gas.
What type of heating system will I use?
Ground source heat pumps can perform better with underfloor heating systems or warm air heating than with radiator-based systems because of the lower water temperatures required.
Is my garden suitable for a ground loop?
It doesn’t have to be particularly big, but the ground needs to be suitable for digging a trench or a borehole and accessible to digging machinery.
Is the system intended for a new development?
Combining the installation with other building work can reduce the cost of installing the system.
You may also want to consider air source heat pumps, which extract heat from the outside air.
Reference: The Energy Saving Trust