Can anybody suggest a cure for air getting into my central heating system? There just seems to be 1 or 2 Radiators that suffer really badly from getting warm at the bottom but filling up with air?
Answers much appreciated
Simon
2006-10-13 22:52:40 · 3 answers · asked by Simon 2 in Home & Garden ➔ Do It Yourself (DIY)
Agree with the first two answers. You need to bleed the radiators each year. You will find if you start with teh ones on the top floor, you may not need to do the ones on the first floor (however, radiator styles are different, so do them all the first time). If you don't have the "key" that is sued to open the valve, your local hardware store should be able to sell you one or order you one. Make sure you take a cup or something to catch the water when it comes out.
If you find that you have to bleed them more than once a year, your regulator valve may be filled with mineral deposits, and not letting enough new water into the system. You should have an expansion tank and regulator valve coming off you boiler. To replace these things, expect about a $500 bill (labor and parts).
Feeling adventurous? Shut down your water and remove and clean the regulator valve yourself. Scared you might not be able to reassemble it? Call the plumber.
Once you do this, you shouldn't need to worry about it for another 10 years or so.
2006-10-14 04:15:41 · answer #1 · answered by jumping_in_101 3 · 0⤊ 0⤋
Make sure the system is full, then bleed the Radiators. I think you can now buy Bleed ports that auto bleed off air. You should have a gage and valve that lets in water when the system is in need- lack of water in the system is how Air gets into the system.
2006-10-14 07:10:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋
it's been a long time since i lived with radiators. i used to kind of like the knocking as long as it didn't wake me up LOL
there should be a valve on the side of the radiator that you can loosen to 'bleed' out the air. when water starts to come out, you've bled it free of air.
this is a pretty simple fix that can be done every year if needed. unless you have a heating system capable of sustaining life in outer space, air is simply going to leak in.
2006-10-14 06:35:29 · answer #3 · answered by velvt_wi 2 · 0⤊ 0⤋