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Leave heating on to prevent burst pipes?

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Hi all, my house is going to be empty overnight and I'm wondering if I should leave the heating on to pevent frozen/burst pipes. Can this happen with combi boilers? I'm reluctant to leave it on as its…
mrsmaido Avatar
7y, 2m agoPosted 7 years, 2 months ago
Hi all, my house is going to be empty overnight and I'm wondering if I should leave the heating on to pevent frozen/burst pipes. Can this happen with combi boilers? I'm reluctant to leave it on as its a huge house and will cost me a fortune, plus there's no timer so it will have to stay on constantly for about 24 hours.
But I suppose a bigger gas bill is better than a rip off plumbers bill!
Thanks in advance. Will rep (sensible) replies!
mrsmaido Avatar
7y, 2m agoPosted 7 years, 2 months ago
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1 Like #1
just put your thermostat down do 15 or 16 and leave it on.
we have done that, our neighbours didnt and they have frozen water pipes - borrowing jugs of water of us now.
1 Like #2
You're only going away overnight, it'll be fine. I regularly leave ours off for days at a time in this weather without a problem. I think you only need to do it if you're going away for extended periods.
1 Like #3
do you think youre house would drop to 0 within the 24hours???:? (including the time it probably takes the heating to cool down....)

if youre worried just leave it on low...
1 Like #4
I definitely would but right down really low - about 10 degrees. By no means warm, but will keep the chill off the pipes!
1 Like #5
Just reduce the stat to say 10 degrees and that should do
[helper] 1 Like #6
You could leave it on but turn the thermostat lower.....if you do have a thermostat or a timer, I'd think about getting one installed - will save you money.
1 Like #7
landofdan
just put your thermostat down do 15 or 16 and leave it on.
we have done that, our neighbours didnt and they have frozen water pipes - borrowing jugs of water of us now.


+1, won't cost a fortune in heating, no chance of a frozen pipe and won't take hours to heat up again when you get back.
1 Like #8
if its only 1 night you should be fine as they house will hold some of its heat. my heating goes off at 10pm each night, we never heat the house at night. But if you are worried then set your thermostat really low like suggested 15 or so then it wont heat constant just when it is needed.
1 Like #9
Id just put the thermostat down to keep it ticking over and it'll be fine.
You'll appreciate it when you get home to a warmish house as it will take a while to reheat!
#10
Got no thermostat! Boiler is only 2 years old, why didn't I get one???!!!
#11
mrsmaido
Got no thermostat! Boiler is only 2 years old, why didn't I get one???!!!


Do you have TRV's? on the rads if so reduce them if not turn the boiler temp down It should show a Radiator Icon on the Boiler panel and reduce that
#12
Personally i'd leave it on. One of my girls knocked off the thermostat before we went out last weekend for only about 4 hours and OMG the house was FROZEN!! Took us hours to warm the house back up which probably cost us more in the long run as we had to crank it right up!!
#13
I heard if you leave your cold water tap dripping slightly it may prevent this?
#14
MPharma
I heard if you leave your cold water tap dripping slightly it may prevent this?


Nice thought but you will then freeze the wastes up.
#15
TRV's? Ancient radiators so I doubt it. There is a dial on the boiler radiator at one end then a sun at the other, do I turn it down to sun then?
Sorry for sounding so thick, must be because I am!

Thanks for all replies so far guys, will rep you all x
#16
mikebike
Nice thought but you will then freeze the wastes up.


True, never thought of that :thumbsup:
#17
mrsmaido
TRV's? Ancient radiarors so I doubt it. There is a dial on the boiler radiator at one end then a sun at the other, do I turn it down to sun then?
Sorry for sounding so thick, must be because I am!

Thanks for all replies so far guys, will rep ypou all x


Yikes not easy then I would leave the system on as is or if you have a half way point for the dial? how do you regulate the radiator temps? that's what needs to be reduced
#18
I don't regulate the radiator temps lol.

Sod it, I'll have to leave it on or I'll loose sleep worrying about it!
#19
mrsmaido
I don't regulate the radiator temps lol.

Sod it, I'll have to leave it on or I'll loose sleep worrying about it!


Good choice:thumbsup:
#20
i dont have my heating on at night at all from around 8ish till 7am and never had a problem?
1 Like #21
if it cost you a fiver to keep house warm its still alot cheaper than a burst pipe plus the associated problems!!
#22
mrcareful
if it cost you a fiver to keep house warm its still alot cheaper than a burst pipe plus the associated problems!!


You're right, I'm just dreading my gas bill, this house is never warm but it costs me a fortune!
#23
Since you have a combi boiler, it is unlikely to freeze up. It is usually the pipes in the loft that freeze in this weather, and then burst.

Since it's only a night you'd be better off leaving it on low as if you were to switch it off, it would take a day or so on full power to warm up again, as the bricks would be freezing.
#24
our system has a safety thing where if it gets down to 5degrees it comes on automatically

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