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BoilerMate II
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BoilerMate A-Class Solar
BoilerMate A-class Ecodan Mitsubishi Heat Pump
Gledhill website
"Faults & Fixes"
discussion forum
Replacing a Boilermate
Contact me

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Replacing a BoilerMate

The main reason for replacing a BoilerlMate (of any variety) is a leak from the internal copper tank. This shows up as water seeping from the seems at the base of the case causing rusty patches and a wet floor. This type of leak cannot be repaired as the internal copper tank is is contained within the outer steel case which is impractical to dismantle. All other faults on a BoilerMate can be repaired. But this leads to the second reason for replacement - owners becoming exasperated with the sheer difficulty of finding technicians who understand their BoilerMate and can repair and maintain it.

Why is such am apparently complex and unusual device fitted in my house?

BoilerMates were fitted in modern houses instead of conventional copper cylinder in order to provide a high pressure hot water supply prior to the Building Regulations being changed to allow installation of mains pressure hot water cylinders (colloquially known by plumbers as megaflows). These days most new-builds are fitted with mains pressure hot water cylinders instead. 

So with what can I replace my leaking BoilerMate? Do I have to have another thermal store?

A mains pressure unvented hot water cylinder can sometimes be fitted instead, but this means installation of a large diameter copper safety discharge pipe running downhill all the way to outside, which may or may not be practical in your particular house. In addition, a pair of motorised valves will be needed along with associated new wiring. The advantage of converting to this system is that it is mainstream technology and any good heating engineer will be familiar with it and able to repair and maintain it.  

I think I'll have to have another thermal store. Does it have to be a Gledhill? Are there any other makes?

No, yes and yes, in that order :) Most owners of leaking or unreliable Gledhill BoilerMates are pretty fed up with Gledhill products and ask me if there are alternative manufacturers whose products are better/more reliable/less likely to leak irreparably. Until recently there was only one other brand and they used copper cylinders too. Now there are other firms whose thermal store cylinders are made from stainless steel. A far better material in my opinion.

Who do I recommend, then?

I would suggest a company called Advance Appliances Ltd. I'm not connected with them in any way other than having occasionally fitted their products. Their clumsily titled "Standard Store System (Direct)" is their equivalent to a Gledhill BoilerMate. Link below:

Advance Appliances Ltd Standard Store System

Can I fit a replacement for a BoilerMate?

I am not an installer these days, I specialise in fault tracing and repair. I generally decline requests to install equipment, but in the case of a Pulsacoils and Boilermates, I occasionally make an exception. This is because installation is very straightforward and customers seem to have great difficulty finding a plumber willing/able to fit a replacement thermal store. Consequently if you need a new thermal store to replace a Pulsacoil or BoilerMate, I may be able to fit it for you subject to two conditions. 1) You will need to purchase the new thermal store and have it delivered to the flat yourself. 2) You will need to dispose of the old appliance and other rubbish generated by the installation yourself too. (My van is full of delicate boiler repairing kit with no space for shifting dirty heavy boilers!)


If you'd like to discuss replacement of your BoilerMate, contact me here




Page first created 12th January 2013
Last updated 23rd January 2013

Copyright 2013 Michael Bryant

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