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Copyright 2017 Michael Bryant

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Boiler types
New boiler?

New boiler cost?

Condensing boilers
Combi boilers
Boilers in which I specialise
Older boilers - worth fixing?
Boiler servicing
Expected life of a boiler
The boiler temp control

What is "SEDBUK"?

Boiler descaling
The Powerflushing MYTH

Asbestos risk in boilers

Concealed flue duct risk
Boiler Reviews


Central heating:

How does it work?
Pipework layouts
Open-vented or sealed?
Thermostatic valves
Warm air heating

Unusual boilers:
PulsaCoil, BoilerMate
  & other thermal stores
Electric 'flow boilers'

Range & Potterton PowerMax

Ideal iStor
GEC Nightstor


Hot water:
Four types of HW system




Avoiding the rogues
Plumbers not turning up
Building Regulations
Common faults
Dangerous appliances
Mains hot water
DIY gas work
The Gas Regulations
Plumber or Heating Engineer?
Boilers in lofts




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Boiler reviews...

As a boiler repair technician I get to know many popular boilers models quite well. Most have specific strengths and weaknesses, and many have persistent 'known issues'. I've decided to write a page about each of the boilers I encounter regularly, focusing particularly on the 'known issues'. If your boiler has a fault, the chances are high that it's a common fault and my page on your boiler might give you a good indication as to what it might be. 

If you are considering changing your boiler, my pages will give you my opinion on whether the make and model of your current boiler is a classic well worth cherishing and keeping, or a complete turkey likely to be unreliable for ever more and well worth scrapping. Forewarned is forearmed ;-)

This is a new page and I've only written a few  reviews so far. I'll add more in the future as I finish them. Here are the first few...!

Potterton Suprima

Glow Worm Energy Saver

Potterton Promax

Glow Worm HXi

Glow Worm CXi

Glow Worm Ultimate

Potterton NetaHeat

Baxi solo HE


Beware though, some of my reviews are extremely negative. But maybe that's because the boilers deserve it. Let me know if you are a satisfied user of a boiler I criticise.... I'll add your comments to my review, for balance :-)


(Several of the pages in my 'Unusual Boilers' section on the left deal with specific boilers in a 'review-like' way too. I may integrate them with this section in due course.) 


First created 12th March 2008
Last updated 20th June 2017



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