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any plumbers about

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need some advice about radiators, we have large bedrooms and one facing north is very cold, it has a large rad, but even turned up high its still cold in there, is it worth changing it to a double rad… Read More
wickedteen Avatar
7y, 6m agoPosted 7 years, 6 months ago
need some advice about radiators, we have large bedrooms and one facing north is very cold, it has a large rad, but even turned up high its still cold in there, is it worth changing it to a double rad
wickedteen Avatar
7y, 6m agoPosted 7 years, 6 months ago
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#1
I despair sometimes.

Of course a bigger rad is going to produce more heat.
#2
well been searching on the net but couldnt find any proper answers, ar you a plumber then..................
#3
wickedteen
well been searching on the net but couldnt find any proper answers, ..................




Well that's probably because nobody elas has ever asked if a bigger radiator will give out more heat. :-D
1 Like #4
I'm a plumber, but you really dont need to be as it's obvious that the bigger the radiator the more heat it produces
#5
Does it need bleeding, is it fully open ?
#6
its fully open and been bled, its a 1200mm x 600mm, butcant understand why its always so cold in there
#7
wickedteen
well been searching on the net but couldnt find any proper answers, ar you a plumber then..................


I lay pipe, but wouldn't class myself as a plumber.

Search for a guide to how big the radiator should be for the room you have.

It will depend on the structure of your house, amount of outside walls etc.
Then get a radiator a little bigger(BTU not physical size) than suggested.

Get some thermostatic radiator valves, and Bob's your Uncle.
#8
pinkleponkle
I'm a plumber, but you really dont need to be as it's obvious that the bigger the radiator the more heat it produces


is there any particalar type or size you would put in a 15ft x 13ft bedroom
#9
wickedteen
its fully open and been bled, its a 1200mm x 600mm, butcant understand why its always so cold in there


My bed room is a wee bit bigger than yours and I have roughly the same size radiator but it's a double one...I find it a little cooler than the other rooms but not too cold.... my living room is about the same size and the radiator in there is also a double but quite a bit taller....it's always lovely and warm in there.
Why don't you get one...that must be your problem if you have it up full and you don't need to bleed it.
#10
wickedteen
its fully open and been bled, its a 1200mm x 600mm, butcant understand why its always so cold in there


its haunted.. obviously.
#11
Jed Maxwell
its haunted.. obviously.


http://img.thesun.co.uk/multimedia/archive/00569/SNA0229AN-280_569728a.jpg
#12
maybe up the flow rate thro the rad by turning the cut off valve (smaller one) about half a turn see if that improves things, a double rad same physical size will also increase heat into room too
#13
also the rad is boiling hot, cant be touched, but if you stand next it you dont feel the heat
#14
You need to Bleed the Radiators, another suggest it place is cold, N Power does a deal for 150 notes sort out insulation in the loft and building worth alook ...far cheaper to do yourself...but no one likes going in dark , spider coated loft....
#15
Jacob_Kreed
You need to Bleed the Radiators, another suggest it place is cold, N Power does a deal for 150 notes sort out insulation in the loft and building worth alook ...far cheaper to do yourself...but no one likes going in dark , spider coated loft....


The radiator is hot, why does it need bleeding?
#16
one word.....INSULATION
banned#17
if you are going to fit a new one insulate the wall when you take the old rad off , you can get a pack of thin foil backed sheets of insulation quite cheap, can be stapled and/or glued to the wall.
worth fitting a thermostatic control valve when you do the rad as there may be times when it is too hot .
maybe you need cavity wall insulation ?
if you cant cos you have no cavity look into insulating on the inside . stud frame of 2`` timber filled in with 2`` compressed insulation and plaster board on top - it can make a huge difference. : )
#18
tdogg
one word.....INSULATION


theres plenty of insulation
#19
if the radiator itself at the top is cool,warm to touch it needs bleeding.

if is hot - have you turned up your boiler yet it need to be on max or at least high in this weather

also insulation as other pointed out - in loft , cavity and behind rads - lots of grants available - loft insulation is peanuts and cavity wall costs about £250 for a 3 bed semi - drafts single insulated windows could be many things


belive BG and Gov doing grants on old back boilers as well :thumbsup:

ps how big is the rad and how big is the room
banned 1 Like #20
wickedteen
theres plenty of insulation


problem may be is that you are losing a lot of heat through your outside wall, particularily in a room of that size . double rad , thermo valve , wall foil - youll see a bit of difference .
if you plan to live there forever get the wall done inside . i did my bahroom which had 2 v cold outide wallls - its easy to heat now : )
#21
its a council house
#22
tangramman
problem may be is that you are losing a lot of heat through your outside wall, particularily in a room of that size . double rad , thermo valve , wall foil - youll see a bit of difference .
if you plan to live there forever get the wall done inside . i did my bahroom which had 2 v cold outide wallls - its easy to heat now : )


thank you thats the sort of advice i was after, not silly comments
banned#23
wickedteen
thank you thats the sort of advice i was after, not silly comments


no prob ,a lot of people on here forget that advice is being asked for because people simply dont know ,none of us know about everything .
two duvets tonight kid : )
#24
How old is the radiator? an old one may not have any convector finning on the back.

Has the radiator been painted? other than the original factory paint, idiots who paint their radiators to blend them into the decoration simply insulate the radiator making it inefficient.

Just change it for a P+ double radiator the same size as the one you have as it's thinner than a K2 double. Put it on the thin side of the bracket to keep it close to the wall.
#25
have you turned up your boiler ?? not the radiator they should be fully open anyhow
#26
It's not about turning up the boiler, the other rooms are hot enough.
#27
pinkleponkle
It's not about turning up the boiler, the other rooms are hot enough.


I dont think its about painting either LOL:roll:
#28
janz70
have you turned up your boiler ?? not the radiator they should be fully open anyhow


If the system has been balanced, then the valves shouldn't be just opened to compensate.

I have given the best advice, but the OP only wants to hear suggestions from people who have no idea.
#29
It;s all about balancing. You probably need to reduce the flow rate coming away from the rad. It needs time to heat the rad, and allow the rad to lose heat into the room, before moving out of the rad back into the system. We had this problem. The thing is hot rads mean nothing if they're not giving up the heat.

Try this link - but it's the first I fouund, so google it again...

http://www.diybasics.co.uk/balancing-radiators.html
banned#30
ok - back to basics

bigger radiator = more heat

/thread
#31
thesaint
If the system has been balanced, then the valves shouldn't be just opened to compensate.

I have given the best advice, but the OP only wants to hear suggestions from people who have no idea.


you have given the best advice :roll: - that very modest of you to say that

theres so many factors involved - Ive got a room thats always cold leaves many questions unanswered

Radiator could be too small for the room - not enough BTU's output
House could be poorly insulated
It many have solid walls
It may have drafts, exposed floorboards
The boiler may be old and inefficient and or undersized for the house (extensions etc)
Room could be single glazed

Another trick the op may try is reducing the flow (gag in a valve ) to/from the other radiators to try to boost the flow through this one - its more likely that the radiator is undersized for the room or it may be full of gunk - when was the last time your system was flushed out ?

just another idea into the mix
#32
wickedteen
also the rad is boiling hot, cant be touched
#33
janz70
you have given the best advice :roll: - that very modest of you to say that

theres so many factors involved - Ive got a room thats always cold leaves many questions unanswered

Radiator could be too small for the room - not enough BTU's output
House could be poorly insulated
It many have solid walls
It may have drafts, exposed floorboards
The boiler may be old and inefficient and or undersized for the house (extensions etc)
Room could be single glazed

Another trick the op may try is reducing the flow (gag in a valve ) to/from the other radiators to try to boost the flow through this one - its more likely that the radiator is undersized for the room or it may be full of gunk - when was the last time your system was flushed out ?

just another idea into the mix


I suggested that the OP got an online calculator to check the size of the rad needed, which took into account other external factors etc.

The only thing you have added is that it might be full of "Gunk/Sludge" which if it were it would not be hot.
#34
Most plumbers don't know their gluteus maximus from their olecranon................IMHO http://fc07.deviantart.net/fs26/f/2008/034/6/5/_shrug__or__dunno__by_crula.gif

Try this http://cultfollower.net/radcalc2/BTUcalc.htm
#35
thesaint
I suggested that the OP got an online calculator to check the size of the rad needed, which took into account other external factors etc.

The only thing you have added is that it might be full of "Gunk/Sludge" which if it were it would not be hot.


could quite easily if the top of the rad were hot and it was cooler lower down due to the said gunk - so it wouldnt be performing to it full potential
#36
janz70
could quite easily if the top of the rad were hot and it was cooler lower down due to the said gunk - so it wouldnt be performing to it full potential


Do you want a link to some deals to a packet of straws?
They are few and far between, so please clutch at them for safe-keeping.
#37
thesaint
Do you want a link to some deals to a packet of straws?
They are few and far between, so please clutch at them for safe-keeping.


oh how we laughed, your so witty :whistling:
#38
Thread closed, as question has been answered.

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