Solar thermal systems are a simple and effective way to use renewable energy to help heat the water in your home. By using energy from the sun, they can reduce the amount of work required from your boiler or other heating system while supporting a more energy-efficient home.
Like any part of a heating system, however, solar thermal equipment needs regular checks and maintenance to keep it operating correctly.
How Does a Solar Thermal System Work?
Solar thermal systems use collectors, usually fitted to the roof of the property, to absorb heat from sunlight.
A heat-transfer fluid circulates through the collectors and carries this heat back into the property. The heat is then transferred into the hot water cylinder, helping to warm the water used for showers, baths and taps.
The main system typically includes:
- Solar collectors mounted on the roof
- A circulation pump
- Heat-transfer fluid
- A hot water cylinder with a solar coil
- Expansion vessel
- Temperature sensors and controls
- Pipework connecting the system together
The amount of useful heat produced will naturally vary depending on the weather and time of year, but solar thermal can still make a valuable contribution to your home’s hot water requirements.
Why Does Solar Thermal Servicing Matter?
Because solar thermal systems often operate quietly in the background, it can be easy to assume that everything is working correctly.
Over time, however, components can deteriorate or require adjustment.
Regular servicing gives an experienced heating professional the opportunity to check the system and identify issues before they develop into more serious problems.
This may include checking:
- The condition of the heat-transfer fluid
- System pressure
- Expansion vessel operation
- Pumps and controls
- Temperature sensors
- Pipework and insulation
- Connections around the solar collectors
- General system performance
Heat-transfer fluid is particularly important because its condition can deteriorate over time. If it is no longer performing correctly, the efficiency and reliability of the system may be affected.
Signs Your Solar Thermal System May Need Attention
It may be worth arranging a professional inspection if you notice:
- Reduced hot water performance
- Unusual noises from the pump or system
- Changes in system pressure
- Error messages on the controller
- Visible leaks
- The system has not been serviced for several years
Even if there are no obvious problems, periodic servicing can help ensure the system continues to operate as intended.
Professional Solar Thermal Servicing from Glenmac Heating
At Glenmac Heating, we provide professional solar thermal servicing and maintenance alongside our wider heating and renewable energy services.
Our team can inspect your system, check its key components and advise you if any maintenance or repairs are recommended.
If your solar thermal system is due a service or you are unsure whether it is operating correctly, contact Glenmac Heating today to arrange an inspection.