DIY Combi Boiler Installation – Can I and Should I?

Buying a combi boiler is easy – getting the thing up and running on the other hand, not so much.

Of course, the combi boilers on the market today are among the simplest, most reliable and generally most affordable produced to date, but at the same time they’ll only ever function as competently as they’re installed in the first place. It’s perfectly possible to get your boiler in with no professional help at all, but then it’s also possible to wreck the boiler and do some serious damage to the whole home’s heating system at the same time.

Worse still, going for the DIY approach will in some cases void your warranty entirely – something you might want to take into account before getting busy with the screwdriver!

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Installing a Combi Boiler Manually – Points to Consider

It might seem as easy as buying a lump of metal and sticking it in place, but it’s rarely quite so straightforward. First of all, you need to be aware of any potential complications in removing the existing boiler, which after a decade in the same spot could be pretty much fused in place. What’s more, the new boiler could be a different size or shape to the old boiler and need all manner of new fixtures and fittings – would you know what to do, what to buy and where to buy from?

Time should also be factored into the process as if you’re already struggling to balance a workload, fitting a new boiler could end up becoming a long-winded burden. You’ll need to dedicate serious time and effort to make sure they job’s done right – don’t forget than during the transition you’ll have no hot water at all!

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DIY Combi Boiler Installation – What’s Involved

Once you’ve established that you can indeed install the boiler without voiding you warranty, you can make a start on the fitting process.

Step One – Read Up

Before doing anything, have a thorough read of the instruction manual that comes with the boiler in order to find out what you’ll need to do and how to do it. If there’s anything you don’t understand, do go any further.

Step Two – Location

The next step is to decide where the boiler is to be placed and positioned, making sure to allow sufficient space for good air circulation.

Step Three – Pipes and Radiators

If you are to install new radiators, you need to think carefully about where they will be placed and how you will route the pipes to and from the boiler.

Step Four – Installation

And then of course comes the real fun of fitting the thing to the wall – easy in theory but rarely so in practice!

Step Five – Air Venting

Last but not least, you’ll need to bleed the air out of your radiators in order to ensure their efficient operation.

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