The benefits of maintenance are clear

Maintenance for solar panels

Clean solar panels operate up to 30% more efficiently, so it’s very important to establish an annual cleaning programme.

Sloping roof panels should be cleaned by the rain as they use self-cleaning glass. However dirt will tend to accumulate in the bottom corners of the panels so, as a precaution we recommend the panels are cleaned annually. This will ensure efficiency is maintained and output is not reduced.

Dirt on the glass covering the solar cells will absorb sunlight and as a result less light will penetrate through to the solar cell.


We use ultra-pure (de-ionized) water which cleans effectively and leaves no residue behind. Ultra-pure water has no dissolved solids, and therefore readily dissolves dirt and grease from the surfaces of solar panels.

It also dries completely spot-free, leaving no marks behind. Ultra-pure water is a proven technology, and has been used for more than a decade to leave a spot-free, smear-free finish allowing the irradiance to penetrate the cells freely.

Google has a 1.6MW solar installation in California. It has carried out some research on the impact of dirt on panel performance, and on the impact of professional cleaning versus cleaning by rain. It concluded that panel output was greatly increased after they were professionally cleaned.

We will carry DC and AC intrusive testing in order to ensure minimum voltage loss. Where necessary we will carry out an internal inspection of key components. All specific fuses, RCDs and breakers will be tested to ensure they are still working efficiently. Our visual inspection will check for charred spots, broken insulation and any other kinds of damage caused by weathering and small animals.

“On maintenance for solar panels, boilers, air-conditioning, we have it covered”

Boiler maintenance

Installing an energy-efficient boiler saves money. With a boiler accounting for a significant proportion of your spend on energy, making sure it is operating to its full efficiency is vital.

Regular boiler maintenance helps avert problems such as a boiler breakdown. And everyone knows that a boiler breakdown always occurs when you most need heating. When combined with a heating maintenance check you are taking added steps to ensure your heating system is always fit for purpose. Energy Gain UK offers a variety of services to suit all heating service and maintenance requirements, backed by our commitment to customer satisfaction.

Air conditioning maintenance

Energy Gain understands that air conditioning needs to be maintained in order to stay efficient. Allowing Energy Gain to carry out your air conditioning maintenance will ensure: lower energy consumption, reduce your electrical costs and help the environment. We operate across the North West Region.

What we service

Split Systems
Wall Mounted Units
Ceiling Cassettes
Outdoor Condensors
Heat Pump Systems
Chiller Units
VRV/VRF units

Call-out features

Fast, affordable servicing
No hidden charges
F-Gas C&G qualified
Dedicated service desk
Rapid response
Guaranteed workmanship

Contact us to ask about service and maintenance of solar panels, boilers and heating systems, and air conditioning and ventilation: call 0845 609 9323 or email