All rads in my house are barely heating!

Baz78

Hi.
So here's my problem; All of the rads in my house (22 in total, 11 up and 11 down) are luke warm at best. Here's what I know:
1. Oil boiler working fine, switching on and off etc.
2. Pressure at a little under 2 bar.
3. Cylinder water very hot.
4. Where the incoming water from the boiler T's offto the cylinder and rads is hot on the cylinder side but only luke warm on the rads side.
4. All rad were bled and balanced by experienced plumber.
5. During troubleshooting the plumber turned off the feed into the cylinder and still the rads didn't heat.
6. 7 year old house.
7. Heat from rads have been poor since te house was built.
7. Private well on-site.
8. 7 different plumbers have looked at it, none can fix it.

Please please could somebody help me. Wife and 2 young kids not impressed
Thanks!
Baz

crosstownk

You state that the rads have never heated properly form day one so is the boiler up to the job of heating 22 rads and the hot water cylinder?

Baz78

Crosstownk,
Thanks for your reply.
According to the various plumbers that have darkened my door over the years the boiler IS capable of heating this much so no problem there (or so they say!).

jimf

is your circulating pump man enough for the job

Baz78

Hi Jimf,
Thanks for your reply.
Again, according to the professionals the circulating pump is sufficiant. I even had an extra one installed in the hotpress for the upstairs rads.

anthony4335

Possible air lock in the system or a blockage. You would imagine a plumber would have been able to sort it out by now

jimf

can you post the make and model of your boiler

anthony4335

How did one plumber manage to balance the system if it was not in working order?

Baz78

Jimf,
I'll post the details later when I get home. Thanks

Baz78

Hi Anthony4335,
The common consensus is a blockage but surely that would only effect one rad as each rad has its own supply/return. I suppose the plumber(s) tried to balance the rads as best they could. I can really only go on what they tell me:)

anthonyos

22 rads is a lot so I would be thinking pump and boiler size

cocoman

Baz78 wrote: »

Hi.
So here's my problem; All of the rads in my house (22 in total, 11 up and 11 down) are luke warm at best. Here's what I know:
1. Oil boiler working fine, switching on and off etc.
2. Pressure at a little under 2 bar.
3. Cylinder water very hot.
4. Where the incoming water from the boiler T's offto the cylinder and rads is hot on the cylinder side but only luke warm on the rads side.
4. All rad were bled and balanced by experienced plumber.
5. During troubleshooting the plumber turned off the feed into the cylinder and still the rads didn't heat.
6. 7 year old house.
7. Heat from rads have been poor since te house was built.
7. Private well on-site.
8. 7 different plumbers have looked at it, none can fix it.

Please please could somebody help me. Wife and 2 young kids not impressed
Thanks!
Baz

Pressure is saying 2 bar but maybe the needle on the gauge is stuck and the actual pressure may be lower.

allthedoyles

Turn off the 11 downstairs and check if the 11 upstairs are any hotter

Dtp1979

Your problem is either there is a blockage between the boiler and Hotpress or the nozzle on your oil boiler is way too small. Was it ever serviced?

Baz78

Jimf,
The boiler is a firebird Popular 115 with a heat output range of 25kw-34kw (as listed on the serial tag attached to the front of it).
It has a Riello RDB 120 burner attached.