A Solar Thermal Power Flush includes:
  • Power Flushing of the solar circuit to remove sludge and debris.
  • Change heat transfer fluid (glycol, antifreeze) fluid.
  • Examination of all connections in the solar loop.
  • Examination of all electrical connections in the solar controls.
  • Confirm the correct operation of all controls.
  • Setting the correct pressure inside the expansion vessel.
  • Calibrate the pump flow rate to suit the solar panels on site.
  • Setting the correct antifreeze pressure in the system.
  • Confirm the correct settings are set on the controller.
  • Check the operation of all valves in the system.
Why Power Flush a heating system?

A gilroys.ie Power Flush for a heating system is like a service for your heating system. When you service your boiler, you are only looking at the internal components of the gas or oil boiler. A Power Flush will clean the entire heating system, including the boilers heat exchangers.

Cleaning them, will remove any grime, sludge or lime build-up which reduces the efficiency of the entire heating system. Grime on radiators will cause cold spots & will reduce the amount of heat that a radiator are let out. Grime in a pump will cause additional wear & strain on the pump & will eventually stop it working. This will stop your entire heating system from operating. Grime build-up on your boilers heat exchangers will cause them to output less heat than when it was new.

The Power Flush chemicals will be forced around the entire heating systems pipework, radiators, cylinder & this will get them like new internally. When we have finished with the cleaning, we will but a protector and miracle seal into your heating system(s). This will prevent the build up of grime, sludge, lime, air & leaks.

Suitable for all heating systems?

Most heating systems are capable of having a Power Flush carried out. If you have an old gun barrel heating system with GB or steel pipes, we will run the Power Flush at a lower speed to reduce the pressure on the steel pipes.


How long does a Power Flush take?

Usually a 1/2 day for a standard house. If you have radiators with cold spots, we may need to insert a cleansing chemical the week before we call. This will help to soften the debris in these cold spots. This makes flushing more successful. Will it get all rads

heating 100%?

Unfortunately not in all cases, though in the vast majority of cases we will get the radiators working far better than before hand. Some rads will have solidified sludge which cannot be removed. These radiators may need to be replaced.

How much does a Power Flush cost?

A Power Flush for a property with up-to 10 radiators or up- to 8 underfloor heating zones will cost from 399 including chemicals, flushing machine and labour. Plus 35 per radiator after 10 & 40 per zone after 8. A solar flush start’s from 225 including flushing machine, solar fluid (glycol) a 10 point check list and labour.

Where would it be beneficial?

Removing radiator water black or iron oxide sludge. If your heating system is slow to heat up. If you have cold spots in the middle of the radiators. Unusual noises from your boiler. Repeated pump failures. Radiators must be bled of air frequently. Pin hole in radiator body which is leaking.

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