I have had a problem with air in my central heating. I attacheded a hose to a valve on the lowest radiator in the house and when I opened it all the rads in the house warmed through except one. When I closed the valve on the 1st rad they all cooled down again. In plain English please, how can I get them all to work?
2006-10-26 09:53:40 · 5 answers · asked by axely1 2 in Home & Garden ➔ Maintenance & Repairs
After what you have done go around the rads and bleed them as air still gets trapped after flushing them
2006-10-26 10:12:27 · answer #1 · answered by Ivan 3 · 0⤊ 0⤋
You need to bleed the air out of all the radiators. You get a radiator key, open the air valve (usually at the top of the radiator) and have a cloth handy because when the air stops coming out, water will start dribbling. If you get dribbling water first, there is no air there to bleed out. There's sometimes an air bleed valve near your boiler/ emersion heater. Bleed that while your at it. Then, when you've done them all, making sure you've tightened up the valves, try your radiators (with them all full on).
If it still doesn't work, you may need to drain the system, which is what it sounded like you were trying to do in the first place! Not to be done if you don't know what you're doing!
My advice is take out a heating insurance plan and get them to come out and sort it. On a regular basis they check your boiler and everything. It's worth every penny.
2006-10-26 10:12:39 · answer #2 · answered by Val G 5 · 1⤊ 0⤋
I'm not an expert either, but I would have thought you need to open the air-bleed screw on the radiator that doesn't work whilst there is pressure in the system (either from this mains-water hose you're using or from the heating pump). The pressure should force out the air that is trapped in that radiator. Don't take your eyes off the bleed screw though or you'll end up with brown water everywhere.
When you say 'a flush' do you mean you are trying to flush out the rust in the system?
Don't forget to top-up the system with anti-rust fluid if you are changing a lot of the water in the system.
2006-10-26 10:16:27 · answer #3 · answered by Quasimojo 3 · 1⤊ 0⤋
I am not a plumber, but when I had mine flushed, I am certain the plumber had a hose coming from the attic!
Have you tried bleeding them? This normally has to be done after the summer months when they have not been used much!
2006-10-26 09:57:50 · answer #4 · answered by Welshchick 7 · 0⤊ 0⤋
your whole system needs flushing through cost about £400/500
2006-10-26 09:58:17 · answer #5 · answered by srracvuee 7 · 0⤊ 0⤋