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Re: Gas Usage while on holiday?
Posted: Sat Jul 08, 2023 8:53 pm
by Ken
my neighbour has his Worcester Bosch in the garage (with a metal door) and in deep winter i am surprised how often it comes on every 5mins or so for perhaps one minute (never timed it) at a very low setting.
Re: Gas Usage while on holiday?
Posted: Sun Jul 09, 2023 7:47 am
by Joeboy
Our boiler is getting on for 20 years now. An Alpha 32CDS system boiler. It does not fire up unless demanded to. We are back to 0.00kWh gas per month the last few.
Strange to think of it as an old boiler as it looks brand new!
Re: Gas Usage while on holiday?
Posted: Sun Jul 09, 2023 9:09 am
by AGT
Ken wrote: ↑Sat Jul 08, 2023 8:53 pm
my neighbour has his Worcester Bosch in the garage (with a metal door) and in deep winter i am surprised how often it comes on every 5mins or so for perhaps one minute (never timed it) at a very low setting.
May be short cycling, and need the output turned down to match (ish) the heat loss.
Lots of boilers are oversized
Re: Gas Usage while on holiday?
Posted: Sun Jul 09, 2023 9:41 am
by Ken
Oh yes definetely oversize at 30kw in a small bungalow probably EPC B. I think people are reluctant to go smaller because of hot shower. I have a 24kw with a tank and most of the time it is fully modulated down in a EPC C/D large bungalow.
Re: Gas Usage while on holiday?
Posted: Sun Jul 09, 2023 8:22 pm
by Swwils
30kwh is enough for a small hotel.
Oversizing in the boiler.industry is ridiculous in the UK.
Re: Gas Usage while on holiday?
Posted: Mon Jul 10, 2023 2:52 pm
by AGT
Still away and boiler now firing up twice a day!
It’s 19.7 deg where the stat is located so it’s not calling for heat.
Further investigation required!!
Re: Gas Usage while on holiday?
Posted: Mon Jul 10, 2023 2:59 pm
by Stinsy
Swwils wrote: ↑Sun Jul 09, 2023 8:22 pm
30kwh is enough for a small hotel.
Oversizing in the boiler.industry is ridiculous in the UK.
I'm thinking of swapping out 30kW gas boiler for a 6kW heat pump!
Re: Gas Usage while on holiday?
Posted: Mon Jul 10, 2023 3:28 pm
by AGT
The heat engineer app is a good survey tool for heat loss calculation, one off costs a tenner and it’s a decent report.
Re: Gas Usage while on holiday?
Posted: Mon Jul 10, 2023 4:12 pm
by Swwils
It's much better to do actual heat loss measurements though. Not hard with cheap sensors and enough time!
Re: Gas Usage while on holiday?
Posted: Mon Jul 10, 2023 6:14 pm
by ALAN/ALAN D
Ref " I'm thinking of swapping out 30kW gas boiler for a 6kW heat pump! "
If your living well down South and not up North.
Heat pump O.K. if you use P.V. to heat the water.
In shower / bath water not hot enough.
Heat pump O.K. If you have lots of layers of clothing to wear inside the house in the Winter.
Fitted a 6kW ground source heat pump here 20 years ago. Really good for cooling the house a few times in the Summer.
The temperature they give out for heating.
