Safety With Heating and Air-conditioning Systems
Keep these 10 safety precautions in mind when working with heating and air-conditioning systems.
1. The heater core on a heating and ventilation system
has coolant passing through it and can be very hot.
Be careful not to touch these parts when they are
2. Many electrical components are used on heating
and air conditioning systems. Always use the
correct testing tools when diagnosing these
3. Be careful not to scrape your hands on the heater
core as these parts are very sharp.
4. Always wear OSHA-approved safety classes when
working on heating and air conditioning systems.
5. When using the propane leak detector, be sure the
propane torch flame is away from other objects that
could be burned.
Back to Safety
6. On the high-pressure side of the AC compressor,
the pipes carrying the refrigerant may become
very hot. Be careful when touching these pipes to
avoid burning your hands.
7. AC refrigerants are a chemical mixture that requires
special handling. Wrap a clean cloth around the
fittings, valves, and connections when performing
work on the system. Never touch the refrigerant.
If it comes in contact with you hands, flush the
exposed area with cold water, and seek medical
attention if needed.
8. AC refrigerant can cause severe frostbite and
immediate freezing upon contact with skin or other
9. Never discharge any refrigerant into an enclosed
area where there is an open flame.
10. With heating and air-conditioning systems, if the
ignition is on, the radiator fan may go on
unexpectedly time. Always be careful and aware
of the radiator fan's operation.