Three Radiators heat up the forth doesn't


Old 02-17-06, 10:19 PM
Thread Starter
Join Date: Feb 2006
Posts: 1
Received 0 Votes on 0 Posts
Three Radiators heat up the forth doesn't

I have hot water heat, with four radiators in a small duplex on the first floor. Their are two seperate systems, one for the first floor, and one for the second floor. Three of the radiators heat up like normal, however today for some reason the fourth radiator does not heat up. I blead all of the radiators and got water from all of them. Does anyone know why my fourth radiator may not be heating up? Any suggestions would be greatfully appreciated, I've tried everything I could think of already. Thanks, Aaron
Sponsored Links
Old 02-18-06, 07:33 PM
Grady's Avatar
Forum Topic Moderator
Join Date: Jan 2005
Location: Delaware, The First State
Posts: 14,028
Received 13 Votes on 11 Posts
Fourth Radiator

From your description, I am presuming the troublesome rad is the one on the second floor. Check the pressure on the boiler. It should be 12-15 psig. Is there a separate thermostat for the second floor & if so, what does it control (zone valve or separate circulator)?
Old 02-19-06, 09:11 AM
Bernard_01's Avatar
Join Date: Oct 2005
Location: New Hampshire
Posts: 247
Received 0 Votes on 0 Posts
In an older home that I once lived in I had the same problem. It was caused by an older (no bladder) expansion tank that did not let pressure rise to the second floor. When a new expansion tank was installed and the circ pump was moved from the return to the supply then the heat went upstairs like magic! Hope this helps.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: