To tell if an air source heat pump is right for you, there are a few key questions to consider:
Do you have somewhere to put it?
You’ll need a place outside your home where a unit can be fitted to a wall or placed on the ground. It will need plenty of space around it to get a good flow of air. A sunny wall is ideal.
Is your home well insulated?
Since air 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 most cost-effective option for homes using mains gas.
What type of heating system will you use?
Air 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 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 ground source heat pumps which use pipes buried in the garden to extract heat from the ground.
Reference: The Energy Saving Trust