Replacing old standard boiler

[pycoed]

Yep, thanks for that, when it was new the boiler was rated at 65% efficient, so probably less now. At those figures, would save 30 - 35% on my bill, if that's how it works? Which would save £400- 500 a year in theory, at today's prices. So payback on new boiler in 5 or 6 years. If that is how it all works. Seems a lot of savings on bills, but prices are high at the moment, no telling what'll happen in future.

Really surprised an old gas boiler would be that low - even a Trianco TRG coal boiler was around 70-75% quoted anyway - perhapos that was before the Trade Descriptions Act?! I can't see gas/energy prices going down anytime soon

 

[Knappers]

If budget is main consideration then like for like

Orherwise:-

;One bathroom you have a combi.

;2 bathrooms with showers and 3 beds either combi or system and unvented cylinder.

;2+ bathrooms and 4+ bedrooms then you have a system boiler and unvented cylinder.

There's good justified reasons for this but it gets a bit complicated and confusing.
Basically comes down to the benefits of a HW cylinder not coming close to being worth the extra cost in a smaller house.

(You can always fit a radiator in the airing cupboard)

 

[Knappers]

Cost wise it's normally quite simple. You won't loose or gain much financially over 10 years by fitting new, what you will get is better controls, a more comfortable home, about 10 year warranty (often without issue).
I recommend budgeting for new boiler every 15yrs and hope to get away with a few extra years

 

[Murdoch]

If you are thinking about installing pv panels then keep the hot water tank, then you can use excess electricity to produce free hot water on sunny days