Checklist For A Furnace Blowing Cold Air: Air Conditioning Service | Chandler, AZ

Is your furnace blowing cold air into your indoor space? Then you should call an air conditioning service provider for an inspection. There is a high probability that you have already tried some troubleshooting but cannot pinpoint the cause. Your furnace is supposed to warm your home during the cold season to ensure it is comfortable. However, it is subject to various problems being an electrical appliance.

Many issues could affect this essential heating appliance, from cracked heat exchangers, pilot light problems, ignition issues, overheating and blowing cold air to various electrical and sensor problems. When an air conditioning repair technician comes for an inspection of why the unit is blowing cold air, they will have a checklist. Based on the checklist, the professional will check the following:

Furnace Power

Is your furnace blowing cold air? The first place the air conditioning service technician will check is the furnace power. They will check to confirm that it’s working properly. Does your furnace use electricity? The professional will inspect the circuit breaker to determine whether a tripped breaker switch might have caused a power outage to the furnace unit. They will also check the furnace wall plugs and furnace switches for power.

If your furnace is powered by gas, they will inspect the intakes or outlets to ensure enough airflow. If these are missing, it may signify a more serious problem, such as fuel gas leakage or carbon monoxide infiltration into your home. To ensure no fuel line leaks for gas-powered furnaces, your technician will switch your furnace off and relight it with a lighter. Do you smell gas when turning your furnace on? Do not try to light the stove yourself, as this could create an explosion.

Thermostat Settings

The other thing that the air conditioning service provider might inspect when your furnace blows cold air into your home is the thermostat settings. The thermostat controls the temperatures the furnace will provide to your home in Chandler, AZ. If the device is too low for your furnace to kick in properly, it might blow cold air. Do you have an old furnace model? Then this may be the reason it isn’t turning on. Some older models only feature settings that indicate “on” or “off,” whereas modern furnace models only feature high, medium, and low settings.

Your furnace may pump cold air because your thermostat is set at low temperatures. Whether your furnace serves both the purpose of heating your home and cooling it, check if there is a fan-only setting available in the thermostat settings. Check the furnace settings and wiring if your furnace is still blowing cold air after cranking up the thermostat’s temperature settings and ensuring it isn’t on low. This setting is available on some furnace types. Thus, it might cause your furnace’s fail to produce hot air. If the furnace is only set to blast warm or hot air, try changing the settings so it can also blow hot or warm air and see whether that solves the issue.

Furnace Circuit Breaker

The air conditioning service provider will head to the furnace circuit breaker panel or wherever you switch the furnace power off to see if it has tripped. A tripped furnace breaker could be the reason your unit is blowing cold air. If the technician the breaker is tripped, they will reset and inspect your unit for the cause of the tripping.

Furnace Filter

The other reason your furnace might be blowing cold air is that it has a dirty or clogged filter. To ensure that your furnace filter is always clean, enlist for an air conditioning service. When was the last time you replaced your furnace filter? If you cannot even recall, it might be time you clean it to remove any dirt that might have accumulated. Turn on the furnace blower and fan to know whether the remedy has worked. However, DIY furnace repairs aren’t recommended because they might result in dangers like electrocution and even worsen the existing problem.

Fuel Level

Check the fuel level in the furnace’s tank to see if the air coming from the gas furnace is cool and if the appliance won’t turn off. If the furnace is out of fuel, it may blow frigid air because of a low gas supply. Check for blown fuses or tripped circuit breakers if your electric-powered furnace is blowing cool air. These may obstruct a sufficient power supply from entering your furnace unit, resulting in the furnace blowing cold air. Rather than wait until the furnace starts blowing cold air into your Chandler, AZ, home, why not have a routine air conditioning service? The professionals will be able to diagnose such issues and address them.

Furnace Inlet Ducts

If your furnace is still blowing cold air, you may want to see if the intake ducts are blocked. Clogged furnace intake ducts may restrict enough airflow. These air ducts can be unplugged so that you can vacuum-clean them. A routine air conditioning service can help avert or address the issues of clogged or dirty furnace intake ducts.

Rectify Overheating Issues

Is the furnace heat exchanger overheating? An overheating furnace heat exchanger is among the issues that may cause the furnace to blow cold air into your home. If you suspect the heat exchanger is overheating, immediately turn off the furnace and contact an air conditioning service provider. Additionally, a malfunctioning gas furnace unit pressure switch could overheat and make the furnace blast cold air. Make sure that this component is also clean and free of accumulation of debris.

A furnace is only supposed to warm your home by blowing warm air. However, different issues could result in it blowing cool air. Fortunately, you can avoid this with routine air conditioning service. Do you need furnace maintenance in your Chandler, AZ, home? Contact us at One Hour Air Conditioning & Heating of Phoenix.

Photo By fizkes at Shutterstock
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