FAQs - Solar Thermal Heating Systems

Below are the answers to some frequently asked questions? If you cannot find the answers you require here please feel free to contact us.

Is there enough sunshine in the UK to make solar energy viable?

Yes, although they work best in direct sunlight, good performance can still be achieved on a cloudy day (diffused radiation) to operate an efficient solar water heating system, even in the North of Scotland.

How much conventional energy will I save?

55% to 70% of the energy required to heat your hot water.

What size of system do I need?

When using an efficient solar collector you need approximately 1 square metre per 60 litres of hot water cylinder capacity.

Where should the solar cylinder be positioned?

In the case of a single cylinder/twin coil cylinder, as close to the solar collector as possible. For preheat, as close to the existing cylinder as possible.

Will it work during the winter months?

Yes, the system will work in much colder temperatures than we experience in this country. Even during cloudy days in winter you can expect some gain.

What happens if it snows?

If the panels are covered in snow they will not work, however there is no need to do anything.

What should I do if I go on holiday?

Just leave the system on.

What servicing is required?

Not very much! You will need to keep an eye on the pressure gauge on the pump station as directed by the installation team. The gauge will fluctuate but should always show pressure – if not please contact DHR.

It is recommended that the system is checked inside and out and serviced by a suitably qualified engineer every 3 to 5 years.