This may be a "how long is a piece of string" question, but how long should a room about 12' by 13' with solid walls and a bay window take to heat up from 16c to 21c? I know it's been cold recently, but it's taking 4 or 5 hours or so which seems excessive. The radiator, which is a double 160cm x 44cm (5'3" x 1'5") located in the bay, gets very hot and the boiler is a Worcester 28CDi. We have 10 radiators (includes 2 large doubles and 4 smaller doubles) in all. Since all of the radiators get very hot I wouldn't have thought the boiler is undersized. Is the radiator undersized for the room or is this just normal? It's only since I've installed a programmable thermostat (we didn't have a room thermostat before) that we've got proper control over the system and can see what's going on.
How long to heat a room from 16c to 21c?
- Thread starter SteveZodiac
- Start date
Sponsored Links
depens where the stat is.. is it in the coldest room. ive a 12 meter kitchen diner that heas in no time due to 16 spots and 1200 600dpc rad. the 3mx3m front room howerer stays cold due to front of house location and victorian lack of insulation. one cure ive found is keeping all doors shut to stop heat loss and knocking down thetrv's upstairs
In my book a room should warm up from stone cold to nice in less than half hour.
Your problem is probably a combination of:
draft
heat from rad cooling off against cold window
often heat getting trapped behind curtains
improper balance
soil
unsersizing
Contrary to lots of installers, I never stick a rad under the window because when it is the coldest season, also the darkest season, I tend to close the curtains thereby keeping the cold out and the heat in.
I hear heaps of people complain about insufficient heating and in about half the cases I find either clothes hanging over the rads to dry, or curtains trapping the heat.
Your problem is probably a combination of:
draft
heat from rad cooling off against cold window
often heat getting trapped behind curtains
improper balance
soil
unsersizing
Contrary to lots of installers, I never stick a rad under the window because when it is the coldest season, also the darkest season, I tend to close the curtains thereby keeping the cold out and the heat in.
I hear heaps of people complain about insufficient heating and in about half the cases I find either clothes hanging over the rads to dry, or curtains trapping the heat.
Sponsored Links
In my house never. If boiler is on 80 degrees all day we can achieve 18.5 max if that is of any help to you..
The kids have grown up in a healthy home where we dress for the weather.
The kids have grown up in a healthy home where we dress for the weather.
:agree:
At the moment 2pm it is up to 16.5 degrees C. One child is sat happy in his school uniform (snow bound no school) other in mufty just a blowse and sweat shirt. both very content (in a yippee no school sort of way) and comfortable.
I am in a shirt and a British Gas fleece (off sick) and perfectly happy at 16.5 degrees C.
Earlier this week I was in Aberdeen where the temperature was sub arctic and the old ladies were content with their trv's betwen 1 and 2. I was Ok with it but that is because I had my longjohn string vest BG shirt BG fleece and a body warmer on top.
It's a matter of aclimatising.
I am in a shirt and a British Gas fleece (off sick) and perfectly happy at 16.5 degrees C.
Earlier this week I was in Aberdeen where the temperature was sub arctic and the old ladies were content with their trv's betwen 1 and 2. I was Ok with it but that is because I had my longjohn string vest BG shirt BG fleece and a body warmer on top.
It's a matter of aclimatising.
T
toasty
That room sounds like my lounge! It's the same size anyway.
Our heating is set to 16C when we are out and 22C when we are in (as luck would have it, so pretty similar to what you ask)
Here's how long it took to heat up on Monday (pretty cold)to heat up to 21C: (28Kw boiler, 1.5metre long K2 rad, double glazing in the bay)
1/12/2008:13:50:59 - <temp> Lounge Temp = 16.02 </temp>
1/12/2008:13:55:59 - <temp> Lounge Temp = 16.35 </temp>
1/12/2008:14:00:59 - <temp> Lounge Temp = 16.52 </temp>
1/12/2008:14:05:59 - <temp> Lounge Temp = 16.92 </temp>
1/12/2008:14:10:59 - <temp> Lounge Temp = 17.34 </temp>
1/12/2008:14:15:59 - <temp> Lounge Temp = 17.51 </temp>
1/12/2008:14:20:59 - <temp> Lounge Temp = 17.79 </temp>
1/12/2008:14:25:59 - <temp> Lounge Temp = 17.94 </temp>
1/12/2008:14:30:59 - <temp> Lounge Temp = 18.06 </temp>
1/12/2008:14:35:59 - <temp> Lounge Temp = 18.25 </temp>
1/12/2008:14:40:59 - <temp> Lounge Temp = 18.56 </temp>
1/12/2008:14:45:59 - <temp> Lounge Temp = 18.93 </temp>
1/12/2008:14:50:59 - <temp> Lounge Temp = 19.31 </temp>
1/12/2008:14:55:59 - <temp> Lounge Temp = 19.56 </temp>
1/12/2008:15:0:59 - <temp> Lounge Temp = 19.81 </temp>
1/12/2008:15:5:59 - <temp> Lounge Temp = 20.06 </temp>
1/12/2008:15:10:59 - <temp> Lounge Temp = 20.31 </temp>
1/12/2008:15:15:59 - <temp> Lounge Temp = 20.56 </temp>
1/12/2008:15:20:59 - <temp> Lounge Temp = 20.68 </temp>
1/12/2008:15:25:59 - <temp> Lounge Temp = 20.81 </temp>
1/12/2008:15:30:59 - <temp> Lounge Temp = 20.93 </temp>
1/12/2008:15:35:59 - <temp> Lounge Temp = 21.11 </temp>
i.e 1hr 45mins from 16 - 21C. (slower than I thought actually).
For info, the outside temp was 6C at the time.
One of the reasons I'm fitting a thermal store actually, heatup times are slow.
Our heating is set to 16C when we are out and 22C when we are in (as luck would have it, so pretty similar to what you ask)
Here's how long it took to heat up on Monday (pretty cold)to heat up to 21C: (28Kw boiler, 1.5metre long K2 rad, double glazing in the bay)
1/12/2008:13:50:59 - <temp> Lounge Temp = 16.02 </temp>
1/12/2008:13:55:59 - <temp> Lounge Temp = 16.35 </temp>
1/12/2008:14:00:59 - <temp> Lounge Temp = 16.52 </temp>
1/12/2008:14:05:59 - <temp> Lounge Temp = 16.92 </temp>
1/12/2008:14:10:59 - <temp> Lounge Temp = 17.34 </temp>
1/12/2008:14:15:59 - <temp> Lounge Temp = 17.51 </temp>
1/12/2008:14:20:59 - <temp> Lounge Temp = 17.79 </temp>
1/12/2008:14:25:59 - <temp> Lounge Temp = 17.94 </temp>
1/12/2008:14:30:59 - <temp> Lounge Temp = 18.06 </temp>
1/12/2008:14:35:59 - <temp> Lounge Temp = 18.25 </temp>
1/12/2008:14:40:59 - <temp> Lounge Temp = 18.56 </temp>
1/12/2008:14:45:59 - <temp> Lounge Temp = 18.93 </temp>
1/12/2008:14:50:59 - <temp> Lounge Temp = 19.31 </temp>
1/12/2008:14:55:59 - <temp> Lounge Temp = 19.56 </temp>
1/12/2008:15:0:59 - <temp> Lounge Temp = 19.81 </temp>
1/12/2008:15:5:59 - <temp> Lounge Temp = 20.06 </temp>
1/12/2008:15:10:59 - <temp> Lounge Temp = 20.31 </temp>
1/12/2008:15:15:59 - <temp> Lounge Temp = 20.56 </temp>
1/12/2008:15:20:59 - <temp> Lounge Temp = 20.68 </temp>
1/12/2008:15:25:59 - <temp> Lounge Temp = 20.81 </temp>
1/12/2008:15:30:59 - <temp> Lounge Temp = 20.93 </temp>
1/12/2008:15:35:59 - <temp> Lounge Temp = 21.11 </temp>
i.e 1hr 45mins from 16 - 21C. (slower than I thought actually).
For info, the outside temp was 6C at the time.
One of the reasons I'm fitting a thermal store actually, heatup times are slow.
T
toasty
I should add that this was with the lounge door open, we don't tend to keep it closed, but certainly individual rooms heat up quicker if you close doors.
sick pay ftw.... im just back after 4months off. dont have to reist acs for 3 months either.
N
namsag
The definition of CH as opposed to back ground heating or any other sort is.
It must raise a room from minus 1 centigrade to 21 degrees C in 1 hour otherwise somthing is wrongly sized or not working properly
It must raise a room from minus 1 centigrade to 21 degrees C in 1 hour otherwise somthing is wrongly sized or not working properly
from minus1??? better hope they did not forget the inhibitor.
is this the official definition?
N
namsag
OOPS. 
The official definition was if the OUTSIDE temp was minus 1 then the house should be at 21 degrees inside in an hour .
The official definition was if the OUTSIDE temp was minus 1 then the house should be at 21 degrees inside in an hour .OOPS.
that rings a bell
Have you considered larger radiators... normally helps.
Is your room stat in a warm area i.e. near a rad. If it is then it may think the house/room is up to temp. when actually it isn't.
As said, lots of things that could be the problem.
Is your room stat in a warm area i.e. near a rad. If it is then it may think the house/room is up to temp. when actually it isn't.
As said, lots of things that could be the problem.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
