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Central Heating

Replacing regular boiler with System boiler

Anonymous user 23/02/2024 - 3.32 PM

I’m due an upgrade to our existing boiler, which is circa 15 years old. Aiming to relocate from downstairs kitchen to 1st floor bathroom, to free up space, will still be on a rear wall and easily 1m away from bath/shower. Also water and gas already fed up there for existing water cylinder. The current boiler uses an invented indirect water cylinder and expansion tank from the loft hatch. We may convert this loft Hatch in the future to a loft bathroom. The house is 3/4 bed and 2 bathrooms (could be an extra shower room in future) 15-18 Rads over 3 floors. 1. Does it make sense to choose a system boiler over a regular boiler ? Are there any Other benefits 2. Are there any other pros/cons other than losing the need for the upstairs (small) water tanks ? Are System boilers less reliable ? 3. Can I retain existing water cylinder - Santon unvented Indirect cylinder? 4. What size boiler should I be considering ? Appreciate any views or feedback. Best Regards AS

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4 Answers

Anonymous user

1 only nenefit of fitting system boiler is that the header tank in loft woulnt be required on the downside with the system boiler you would be pressurising the rads pipework etc snd with the higher pressure it could cause leaks. You could still retain unvented water tank with either heat only or system boiler and without sizing sytem properly you would only be guessing kw required for boiler. You have lots of options to consider before changing and it would be better to have someone look at it to give you an honest opinion Thanks alex

Answered4 June 2020

Technical Energy Uk Ltd

Rating: 5 out of 5

Sheffield

A regular boiler and a system boiler are the same thing. What you should be asking is "is a combi boiler better than a system boiler". Apart from the obvious cost considerations, there are a few factors to take into consideration. Factors such as your water main supply pressure, likely simultaneous demand for hot water, home heating demands and even the size of your home are all elements that contribute to the decision making process. For a combi, you need good mains water supply pressure, not so critical when you have a system boiler with a hot water storage tank. The biggest influence is really going to be the demand on the hot water supply. If you have a family that is going to want hot water simultaneously (i.e. 2 showers running, someone washing dishes & the heating running), then even the best combi boiler is not going to be able to cope. I hope that gives you a better idea of what is required,

Answered25 June 2020

Hutton heating

Rating: 4.8 out of 5

Ormskirk

The only down side is cost and also not having constantly having hot water which you would get with a combi .but great answer guys 😄

Answered21 June 2020

Anonymous user

I would put a combi in Free’s up even more space

Answered21 June 2020