If your radiator is on, but the home feels warmer than it should, it is possible that there is trapped air, a problem that should be easily fixed by bleeding the radiator.

1. How to Bleed a Radiator

2. If your radiator is on, but the home
feels warmer than it should, it is
possible that there is trapped air, a
problem that should be easily fixed
by bleeding the radiator. All you
need to fix this common problem
in the simplest way, is a few tools
and a little patience.

3. Bleeding Radiators Made Easy
The key to bleeding a radiator is to let all the air
out, before filling it with water. While it is easy
enough to do, we do recommend that you call
an experienced heating technician professional
to assist you with all your heating needs. Call
Hoerner Heating & Plumbing 416-463-2573 for
quality, experienced service at affordable rates.

4. Do It Yourself: Bleeding Radiators
If you decide to attempt bleeding
radiators, you will need the following:
*radiator valve key
*flat head screw driver
*pliers
*rags

5. Hydronic heating works on a closed system.
When in use, the air will separate from the
water, finding a place to build up. This is a
problem that affects the top floor in particular.
Unless the air is removed the radiator will
malfunction or stop working altogether. The air
has to be removed, using the process of
bleeding to replace the build-up air with water
once again and restoring the system to its
proper function. Ideally, this should be done
before heating season.

6. Bleeding Radiators: Step-by-Step
Before you can bleed radiators, you need
to find out which systems require
attention. Turn up the temperature on the
heating system and check all the radiators,
which should all be the same temperature.
If some are cool at the top, those radiators
require bleeding. Turn off the boiler, and
follow the following steps.

7. 1. Find the small valve near the top of each
radiator. You can use a radiator key, pliers or a
screw driver to slowly open the valve.
2. Have a rag ready to catch water that may
come out. There will be a hissing noise while the
air comes out, and once the air is out, water will
start coming out. This water is dirty, so do not
let it stain your floors and carpets.

8. Note: If no air or water comes out, be sure to
call Hoerner Heating & Plumbing, as this is an
indication of system failure.
3. Once you are satisfied that there is no more
air, quickly close the valve and check if there are
any leaks.
4. Wait a few minutes while the system adds
more water to the radiators.

9. 5. Check to see if there is enough pressure on
the boiler. Residential heating systems should be
at 12-15 PSI.
6. Repeat steps 1-5 with each radiator that
requires bleeding before turning the heat down
again.
If you encounter any issues while bleeding
radiators, be sure to call your local radiator
experts, Hoerner Heating & Plumbing, at 416-
463-2573. Radiator Toronto experts.