Common questions

Why does my AC keep running on low refrigerant?

Why does my AC keep running on low refrigerant?

Low refrigerant charge. If you don’t have enough refrigerant in the system, probably due to a leak in the coils, your unit can’t cool the space. When this happens, the unit will keep running as it works harder.

Why is my a / C not keeping up with the heat?

If you’re only now noticing your A/C doesn’t keep up in the heat of the day, it may not be a new problem. Start observing which rooms are hottest, what time of day is it the worse, etc. Doing this will give you and your HVAC professional clues about what’s likely the problem, or problems plural.

What should I do if my air conditioner is not working?

Virtually all of the most common causes of air conditioner problems can be easily prevented with regular maintenance. Have an HVAC expert come in to inspect and tune up your system each spring before starting it up for the first time.

Why does my AC keep running past the set point?

Especially if you have older ductwork in your building, you may be losing cool air through leaks in the ducts. The joints may not be sealed, or the insulation may be gone. If enough cool air escapes, the temperature in your space never reaches the set point and the system will keep running.

Low refrigerant charge. If you don’t have enough refrigerant in the system, probably due to a leak in the coils, your unit can’t cool the space. When this happens, the unit will keep running as it works harder.

If you’re only now noticing your A/C doesn’t keep up in the heat of the day, it may not be a new problem. Start observing which rooms are hottest, what time of day is it the worse, etc. Doing this will give you and your HVAC professional clues about what’s likely the problem, or problems plural.

Virtually all of the most common causes of air conditioner problems can be easily prevented with regular maintenance. Have an HVAC expert come in to inspect and tune up your system each spring before starting it up for the first time.

Why does my air conditioner make a hissing noise?

Common sources of hissing sounds in or at HVAC systems A failed or failing or sticking valve inside the compressor motor Abnormally high pressures on the outlet side of the compressor motor activate an internal pressure-relief safety valve. Check that the compressor/condenser’s cooling fan is running properly.

Author Image
Ruth Doyle