Air Conditioner & Heating Checklist


You may be able to resolve some of your heating and cooling problems by first reviewing our heating and air conditioner checklist.


Air Conditioner and Heat Pump Checklist


Check thermostat to ensure that it is set to “Cooling” or “Heating”.
Make sure the set point on your thermostat is lower than the room temperature.

Check your duct registers to ensure they are open & air is blowing.
If there is no air movement and your thermostat is set to “on”, possible reasons for this problem could be frozen coil, dirty filters, bad blower motor, blower motor capacitor or relay.

Check your filters to ensure they are clean. 
Dirty filters can restrict air flow to your evaporator coil, causing it to freeze with ice, as well as not move enough air to your duct registers. Changing your filters regularly can prolong your unit life and maintain its efficiency.

Check outdoor units for External Manual Reset Button (common on Ruud\Rheem units)
This button is located below the copper line sets that run from the house to the inside of the unit. This is a manual reset button for the high pressure switch on your unit. Pushing it will reset the switch and possibly allow your unit to operate smoothly again. Ensure that there is nothing around or directly above your condenser to prevent it from pulling air in and exhausting air out the top.

Check breakers at electrical panel for indoor and outdoor units.
If the circuit breakers to your units are tripped, it can cause problems. Tripped breakers can be caused by a burnt wire, a short in the wire, or a component of your HVAC not working properly. Always practice caution when dealing with high voltage electricity.

Check outdoor unit for ice.
If the unit has ice on it, shut it off for at least two hours. This can indicate problems like low refrigerant levels, airflow problems, or a restriction. Thawing it out for two hours will help, but it is best to schedule a service call to check for further problems.

If heating unit has thick ice, set thermostat to “Emergency Heat”.
When your unit is heating in the heat pump mode, it reverses the flow of refrigerant to pull heating from the outside to your inside evaporator coil. During this process, it can cause your outside condenser to freeze up, which then enters defrost mode to melt the ice. If your unit is covered in ice, it is possible your defrost board is malfunctioning. Set your thermostat on Emergency/Electric Heat, allowing the condenser to thaw out.

Gas Furnace Heating Checklist


Check thermostat to ensure that it is set on “Heating”.
Make sure the set point on your thermostat is higher than the room temperature.

​Check to make sure you have gas.
If available, check another gas appliance such as your stove to ensure it is working properly as well.

Check pilot on gas furnace.
If your furnace has a pilot, check to ensure it is lit with a constant flame. Units with an electronic ignition will not be visibly hot at all times.

Disconnect power to furnace.
In some instances, your furnace will lock itself out from igniting the gas. If this happens, it’s time to call as this can indicate a more serious problem.

Check your duct registers to make sure they are open & air is blowing.
If there is no air movement and your thermostat is set to “on”, possible reasons for this problem could be frozen coil, dirty filters, bad blower motor, blower motor capacitor or relay.

Check your filters to ensure they are clean.
Dirty filters can restrict air flow to your evaporator coil, causing it to not circulate enough air to your duct registers. Changing your filters regular y can prolong your unit’s life and maintain its efficiency.

Check breakers at electrical panel.
If the circuit breakers to your units are tripped, it can cause problems. Tripped breakers can be caused like things such as: a burnt wire, a short in the wire, or a malfunctioning component of your HVAC. Always practice caution when dealing with high voltage electricity.