Solar Hot Water

Solar Thermal Servicing

“We will service your system, even if we didn’t install it”

In recent years there have unfortunately been a number of companies that have traded in the Renewable Sector for a few years and then disappeared. Leaving a lot of customers with nowhere to turn for after sales questions or service issues. We are proud to say that we have been trading nearly 12 years and our customers are relieved to know that they have a friendly, knowledgeable company, which they can trust and rely on, just a phone call away.

Solar thermal systems are generally quite robust systems that can work for 30-40 years with correct servicing.
Unlike Solar Electric systems they have moving parts which can wear out and also have safety devices that need to be physically checked. Also fully pressurised systems contain a heat transfer fluid, that is generally a glycol anti-freeze/water mix. Over time the antifreeze will turn acidic, due to the high temperatures it can experience in summer, and can be detrimental to the pipework and system components. It should therefore be replaced on average every 5 years.

Sustainable Energy Engineering 1 Year Service schedule

Our Solar Thermal system annual service starts from £85 + VAT.

On an annual basis we would carry out the following checks and tasks :-

  • Clean panels
  • Check roof fixings
  • Check all pipework connections
  • Check correct position and operation of thermostats
  • Check integrity of pipe lagging and replace if necessary
  • Check correct operation of pressure relief valve
  • Check integrity and pipework to drain or discharge container
  • Check pressure of system and add additional glycol as necessary (Up to 10 litres of fluid)
  • Check correct pump operation and acceptable noise of system
  • Check correct flow rate of heat transfer fluid
  • Check and adjust pressure of expansion vessel (requires quick release valve)
  • Check correct operation of Solar Hot Water controller and settings
  • Check anti-freeze protection temperature
  • Completion of Solar Thermal Service report

Sustainable Energy Engineering 5 Year Service schedule

Our Solar Thermal system 5 year service starts from £180 + VAT.

On a 5 year service we carry out all of the annual checks as well as draining and flushing the old heat transfer fluid, and re-filling with new glycol water mix :-

  • Drain existing heat transfer fluid
  • Flush system with water
  • Drain water
  • Re-fill with new glycol water mix to give correct protection to -20 degrees °C (up to 10L of fluid)
  • Run system for 1 hour to remove any air from pipework
  • Clean panels
  • Check roof fixings
  • Check all pipework connections
  • Check correct position and operation of thermostats
  • Check integrity of pipe lagging and replace if necessary
  • Check correct operation of pressure relief valve
  • Check integrity and pipework to drain or discharge container
  • Check pressure of system and add additional glycol as necessary
  • Check correct pump operation and acceptable noise of system
  • Check correct flow rate of heat transfer fluid
  • Check and adjust pressure of expansion vessel (requires quick release valve)
  • Check correct operation of Solar Hot Water controller and settings
  • Check anti-freeze protection temperature
  • Completion of Solar Thermal Service report