We recommend you speak to an MCS registered installer who will survey your property and make sure you have carried out all the measures to make sure your home is as energy efficient as possible. You should also look at what funding and grants are available to help with your installation costs, as this varies from area to area.
Heat pumps are designed to generate hot water, similar to how a system or heat only boiler and cylinder work. Cylinders that are designed to work with heat pumps have a special coil inside, with a much larger surface area to allow for great heat transfer, given that the system temperature is lower than it would be with a gas boiler.
When designed and installed properly, any noise generated by the heat pump should not be noticeable. The technology has been optimised over the last few years to reduce any noise to a minimum.
Residential heat pumps in general are in the region of between 300% and 500% efficient. The Seasonal Coefficient of Performance (SCOP), i.e. the average annual performance of the heat pump, is generally between 3.5 and 4.3. This means that between 3.5 and 4.3 times as much heat energy is produced as the system consumes in electrical energy.
This is proportional to how much heat your building needs.