How much heat do you lose overnight?

[tornadoinsideoutfig]

My house loses quite a bit of heat overnight. Three degrees in twelve hours last night but it has been as much as 6 degrees in previous December and January cold snaps. It has an EPC B rating and my bills are comparatively very low. However I've read that some other people's houses would not drop below 14 degrees. What does your house drop to inside without heating?

Goodness, the lowest mine has dropped when it was really cold is to 10c and I'm on the South coast.
Now it's at 17c but will be on 12c by the morning

All of it. Leaky, old, poorly insulated house. Fortunately I don't mind the clod.

@kilos It sounds like you are losing similar amounts of heat to me. Mine is 14 degrees at 7pm when the heating turns off, then the lowest it's dropped to is 8 in the morning. This morning it was 11 degrees, so it had lost 3 but then stabilised there until the heating came on at 5pm.

@MrsTerryPratchett Do you mean it gets down to outside temperatures?!

It's usually around 17c 10-11pm. DH gets up 5.45pm and usually 15c, but if it's freezing outside likely to be 13c.

Pretty much. Especially in parts of the house.

We are in the southwest and our house is old and wonky, and poorly insulated. The upside to this is that we have zero mould where lots of houses have a fair bit round here. Downside: it regularly gets down to 13.5 overnight.

So we have electric heating and a log fire ( it's rental, I am in no way at all posh!!). Electric heater takes about 20 mins to completely heat a small bedroom, then we switch it off. Log fire helps, but I don't know if I'm weird, but I don't mind 10degrees ish during the day? My boyfriend complains, am I weird?? I wear jumpers, and that is absolutely no disrespect to tornado whatsoever, I'm just asking opinions, thanks

I prefer it at 12 or higher if I am home at the weekend, that's wearing a jumper. So under that and I will put the heating on for an hour in the morning. 10 is fine just to have breakfast before leaving for work, 8 is chilly but I can't justify heating a house we are about to leave.

I posted because I read on here that some posters were questioning if heating set to 14 would come on at all. So I wanted to find out if it was normal for houses to drop below 14 without heating. I'd think you'd need a mid terrace with neighbours who like it warm for heating to never come on.

Ours doesn't get below 15, and that would be on a really cold night. Heating on all day, set to 19, goes off completely at 9.30pm, back on again in the morning at 7.00am.

I heat to 17 and overnight it drops to 13.5ish degrees.
I only heat in the morning if we are all staying in all day otherwise heat off until 4.30pm.
I have a bathroom blow heater which helps take the edge off for morning showers. I shower in the evening if I need to wash my hair.

I have ended up living more like I did as a child with prices so expensive. I was always so cold, even wearing layers and gloves inside. I didn't want this for my kids.

Our house (very well insulated semi, 30’s house but we have renovated the whole thing extensively) sits around 18 with no heating like now, I’ve put it on in the room that I’m in so will soon be around 21/22 but without it’s 18. Overnight it seems to drop down to 16 in the whole house which is fine as we’re asleep!

Upstairs about 14 or 15 and downstairs a bit lower apart from if there’s a very cold period.
It’s a 10 year old new build with low fuel bills.

1960s house which we renovated and insulated well. Heating off at 9pm. House doesn't go below 19/20 overnight - so loose very little.
Sleep with bedroom window open and never any heating on. Room overnight is 14-15 in the winter/at this time of year.

This is very similar to me although I set mine to 18° this year whereas it was 19° last year. I am prepared to boost it on cold days to 21° and expected to boost more often this winter with it set to a lower temperature but I’ve not, in fact I’ve only boosted once or twice.

Overnight, my bungalow drops from about 16° at midnight to around 14° just before it comes on again at 7 am. My overnight setting is 10° and I don’t think it has ever dropped that low even when it’s freezing outside. My bungalow does not have cavity wall insulation and the roof insulation is not brilliant but it’s difficult to improve it due to a dormer bedroom that was added years ago.

My house is big and draughty, so it takes ages to heat up, and then the temperature drops steadily through the night.

It’s usually about 16 degrees when we go to bed and then the thermostat is set to 12.5 degrees until about 5-30am. During very cold weather it will click on during the night but not recently (I notice we’re due to be -3 tomorrow though!)

We do keep heating on at night, but when we didn't, it used to drop from 19-20 to 16-17.

Minus 3 ( in March!) here last night, our bedroom went from 14c to 13c, no doubt partly helped by have us 2 in it. Lounge went from 18c to 14c.

What time is heating going off, mine is off at 7pm, it doesn't seem to get that cold before I go to bed at about 10 though.

I put ours off at 7pm. Bed 10 30.

The house was 16.5 when went to bed it was -1 outside. It’s currently 13.5. The lowest it got was in December when we had that cold snap and it was -6/7. It was 11.5 in a morning.

No heating after 9pm. We still not have it on constantly tho so it gets a boost in the evening.

I accidentally turned our thermostat off last night so by morning it was 12.6 when usually the thermo would have triggered to be 17 at 6am. I have the heating on a lot during the day as I'm usually usually home with young kids, thermo is set to 17 all day (14 over night) I sometimes boost it if it feels cold

With the heating at 18 for 2 hours in the evening ours is at 15ish in the morning. In November when it was really cold and we didn’t put the heating on at all it was mostly around 12/13 inside but a couple of rooms did get down to 9

Not much but after lots of renovations it is well insulated. You can tell when it snows as our roof is still covered long after neighbours have melted. I went to bed last night and temp was 19 and this morning it was 17.

I have a hive heating system upstairs, UFH most of downstairs, and little Bluetooth thermometers in three of the rooms. We are in a 30s semi renovated recently with more loft insulation than required, cavity wall fills, closed chimneys (except for one downstairs room) but quite old double glazing. I am an energy efficiency geek!

The hive says that upstairs lost 1° overnight until the heating kicked in at 6am, taking it pretty quickly back up to 19°. The sensor in the upstairs room confirms that measurement.

In the downstairs extension which has the UFH on low and constant at 28° water temp, the room fluctuates between 20-22° according to the sensor.

We have one unrenovated downstairs room which has insulated walls and double glazing but no insulation under the floorboards, no radiator, thin curtains, and it has an open but vent-capped chimney. This room gets its warmth front the rest of the house, and fluctuates between 16-18 usually this winter, but last night was 16° at 10pm and gradually lost another 2 to be 14° at 6.30am when I can tell that my teenager went in there and switched on the computer, which is what has warmed it up! Sensor picture for any other heating geeks.

Other info: our smart meter says we have used about 85kWh a day this week, not actually sure what the boiler flow temp is when the heating is on, we also have a large HW tank.

My heating goes off at 10pm ( set at 18°) but my house does seem to get cold quickly and I am often still awake at 1am! If I am sat in lounge watching tv until late then I might boost the heating to 20° but usually once I am in bed and reading, I don’t need to.