why won't my hvac turn on

Why Won’t My HVAC Turn On: 6 Common Causes

Why won’t my HVAC turn on? It is a valid question if you live or work in the Arizona heat. Locals understand the importance of a fully functional HVAC system, so what are the options when the system breaks down?

As the HVAC experts in Green Valley, Eazy Breezy Heating & Cooling shares six reasons for malfunctioning HVAC systems in Tucson, AZ, and nearby areas.

1. A Tripped Circuit Breaker

Strained circuit breakers will shut off under an overload of electricity. Manufacturers design them to protect a home and appliances against fire and other damages. So, if the HVAC does not turn on, the first check is for a circuit breaker that needs resetting.

Has the problem persisted after the reset? Even broken wires in a light switch can distort the circuit, so call a team like Eazy Breezy Heating & Cooling as soon as possible. A qualified electrician will need to evaluate the property’s circuitry to find the cause of the overload.

2. A Blown Fuse

Are the fuses in good condition? Professionals typically test these points for continuity using a multimeter. If there is no decisive beep from the fuse in question, it will need replacement.

The fuse box for air conditioners is typically around the outdoor unit. The control board holds the fuse for the furnaces.

3. Clogged Air Filters or Evaporator Coils

Why won’t my HVAC turn on with the circuit breaker up and working fuses? The next check would be for dirty filters, which easily lead to ice forming over air conditioning coils. In a furnace, a dirty air filter will limit the fresh air cycled into the system so that the heat exchanger heats up beyond normal and deactivates.

Similarly, evaporator coils (and other such components) must be free from debris to work properly. Without maintenance, an HVAC system will lose efficiency and eventually break down.

4. A Dirty Pilot Light

Is there a faulty or dirty pilot light? The gas furnace will not turn on while it is in that condition. Furnace repair technicians will easily take care of pilot light problems, but it might be possible to check it yourself with some mechanical expertise and a user manual.

5. A Refrigerant Leak

What will happen when there is a refrigerant leak? The system will stop working, or worse, it can lead to freon poisoning. If you suspect a leak, call an HVAC professional immediately for a detailed evaluation.

6. A Broken Thermostat

The HVAC thermostat is a vital part of the system as the control panel of the appliance. If the thermostat loses battery power or sustains damage, your HVAC units will not run.

Request an Inspection From a Team of HVAC Professionals

Sometimes, the best way to find out why an HVAC isn’t working is a professional inspection by experienced HVAC technicians. And choosing the right HVAC contractor can make all the difference.

Why won’t my HVAC turn on with all the above checks in place? Call Eazy Breezy Heating & Cooling at 520-207-0334 today to find out or schedule HVAC-related services in Tucson, AZ, and the surrounding communities.

Contact Us

Eazy Breezy Heating and Cooling can provide you with regular tune-ups for both your furnace and air conditioner in your Tucson home. We’re professionals, so we’ll always provide you with the best service possible. Don’t wait another day before getting the routine maintenance you need–call us today!

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3710 S Park Ave #705
Tucson, AZ 85713

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