Is a power flush required if fitting a new boiler?

[TBServices]

The OP sound pretty clued up.

The fact he has said no room stat is ridiculous.

No point speccing a heating and hot water install that costs thousands, around an electric shower - they might want to rip it out in a year!

 

[glenno1]

Im not convinced powerflushing works as chemicals react with right temperature and the temperature drops too much as it travels round the system

 

[sunflowers8]

Just wanted to provide a quick update. Have had a second quote of approx £2k for the Worcester Greenstar 30si with thermostat, powerflush and filter (I think). He clearly loves Worcester and said the only other brand he would recommend was Valliant but as this doesn't come with a seven year warranty he thinks it's not as good a deal.

 

[PowerFlusher2]

Have a look at Intergas, had one put in last year, excellent bit of kit, and only 4 moving parts!

 

[AWheating]

Im not convinced powerflushing works as chemicals react with right temperature and the temperature drops too much as it travels round the system

Convinced because of what? Chemical cleaners work hot or cold, heat accelerates the process yes but does not activate the process. Most chemical cleaning processes are accelerated by heat, just like doing the washing up, but washing liquid still works in cold water. A power flushing machines biggest advantage is the flow rate of the water it circulates. Many machines are now rated at 100 lpm or higher and it's the flow of water that does the job better than compared to a mains flush only. Either way if you can heat the system for a mains flush you can for a powerflush.

unless you only flush with the new boiler in which case is like delivering a new born baby in a cemetry.

 

[LPC]

Just wanted to provide a quick update. Have had a second quote of approx £2k for the Worcester Greenstar 30si with thermostat, powerflush and filter (I think). He clearly loves Worcester and said the only other brand he would recommend was Valliant but as this doesn't come with a seven year warranty he thinks it's not as good a deal.

Very easy to become Vaillant Advance, then offer 7-year warranty on a Vaillant.

Worcesters are easier to fit than Vaillants and I bet he's got a Vaillant in his own house.