What exactly is "bleeding a radiator"? Does it need to be done every year?

Answer 1

you work from the lowest to the highest [floors]at the top off the radiator you will see a fitting .turn the fitting untill you hear air .when the air stops close the fitting and work your way up ending with the radiator that is the farrest away from the boiler .if this happen often .than you possibly have a ruptured bladder in the expansion tank

Answer 2

Antifreeze mix 50% with water is good for about 5 years. You should also flush the block by opening the petcock and running the engine being sure to keep the radiator full. Be careful. When the water is clear, Let it run until no water comes out of the petcock. Then add enough antifreeze to make a 50-80 mix. Ifr you can't add enough just keep the balance until you need to add and use that. Unless you live where it gets 20 below zero it will be ok.
If you are talking about a home heating system you open the **** near the top until water comes out.

Answer 3

Your talking about your heating systom right.I don't bleed mine it only needs 2 get done 2 the furance every year though they say have a service man do it but the guy showed my husband how 2 do it so it saves us $120.00 on the radiators no you don't have 2
I never shut mine off you only do that if you turn them off.
Good Luck

Answer 4

Are you talking about a car radiator? If so you only need to bleed the air out if it got low on coolant.

Answer 5

Bleeding a radiator is simply draining it from the petcock(small valve) located on the lower portion of the radiator.You should probably drain and refill it yearly if you have an older model vehicle.