Central heating maintanence - pump keeps failing

Rich Marshall

Well-known Member
I've changed my centrel heating pump 3 times over the last 3 years or so and it's just failed again today. (I think it must have known it was snowing outside)

It's situated in the loft and the boiler is in the kitchen on the ground floor (boiler works fine)
I'm thinking maybe I should have the system flushed as it could be a blockage which is doing the damage.
Has anyone had this done? ....what's involved exactly?
I'm assuming it's a specialist job:rolleyes:

It's an old system, maybe 20 years old and I've done nothing to it in the past 10 years since we've lived here.
 

conrod129

Novice Member
I've just had mine done 10 till 5 job, flush £350, new pump fitted £120, and a service £50 they had to manually unblock/replace some pipe work next to the pump as it was so badly blocked. and what a result, so much hot water and the heating just needs to be on for 5min to warm the house. For me its a massive improvement money well spent I think.
 

Rich Marshall

Well-known Member
I've just had mine done 10 till 5 job, flush £350, new pump fitted £120, and a service £50 they had to manually unblock/replace some pipe work next to the pump as it was so badly blocked. and what a result, so much hot water and the heating just needs to be on for 5min to warm the house. For me its a massive improvement money well spent I think.
Cheers, who did you get to do it?
 

paulyoung666

Distinguished Member
beware , powerflushing central heating systems is a conplumbers dream job , sounds as though your system needs it though ...
 

Andyh4324

Well-known Member
Have you checked whether the pump is just getting air trapped in it all the time being in the loft? Running dry would knacker the pump fairly quickly.
Also if you have TRV's on all the rads and no by-pass, the pump will be pushing against a closed pipe if all the TRV's close before the stat turns off. Assuming you have a room stat.
 

zmoosa1

Active Member
Had mine done last week. I used a company called Powerflush Ltd (type pflush in to google). This is the only service they provide and the guy I had round worked for 5 hours and did a great job. Highly recommended.
They have a video on the website showing what they do!
 

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