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HomeRepair HelpComfortmaker Central A/C RepairComfortmaker Central air conditioner has poor temperature control Repair
Comfortmaker Central air conditioner has poor temperature control
If your Comfortmaker central air conditioner has poor temperature control, with uneven cooling, an AC temperature that is not accurate, or an AC that is not holding the set temperature, start with the air filter. A clogged air filter is the most likely cause because it restricts airflow through the furnace or air handler, reduces cooling capacity, and can cause the evaporator coil to frost over. Next, check the wall thermostat. Failed electrical contacts can prevent the furnace or air handler and condensing unit from operating correctly or can cause intermittent cooling. Blocked or leaking vents are another possible cause because they reduce airflow and create inconsistent room temperatures. An oversized air conditioner may cool the home too quickly and shut off before air distributes evenly. Replace a dirty air filter, inspect accessible vents, and test a thermostat only with power safely disconnected. Work inside the thermostat or system control wiring requires electrical care, while 240V components and any sealed-system or refrigerant repair require a licensed HVAC technician. Enter your Comfortmaker model number to find the exact replacement air filter, thermostat, or other part for your central air conditioner.
01 - Comfortmaker Central Air Conditioner Air Filter
Check and replace the air filter at least twice a year, more often in dusty/dirty environments or if there is a pet in the home. A clogged air filter will greatly reduce the air flow of the furnace or air handler which can result in poor temperature control when trying to heat or cool the home.
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Highly Likely
02 - Comfortmaker Central Air Conditioner Wall Thermostat
The wall thermostat has electrical contacts that control the power supply to the furnace or air handler and condensing unit. If the contacts in the thermostat fail, certain components of the cooling system may not work or may only work intermittently. To determine if the thermostat is defective, use a multimeter to test it for continuity. If the wall thermostat does not show proper continuity, replace it.
Common
03 - Comfortmaker Central Air Conditioner Wifi Thermostat
The WiFi thermostat has electrical contacts that control the power supply to the furnace or air handler and condensing unit . If the contacts in the thermostat fail, certain components of the cooling system may not work or may only work intermittently. To determine if the thermostat is defective, use a multimeter to test it for continuity. If the WiFi thermostat does not show proper continuity, replace it.
Common
04 - Clogged Air Filter
If the air filter is clogged, air cannot flow properly through the home's venting system. This greatly reduces the cooling capacity of the air conditioner. In addition, if the air filter is clogged, the evaporator coils will frost over and not be able to remove moisture from the air. The air filter should be checked and replaced at least twice a year, more often in dusty/dirty environments. Refer to owner's manual for guidance.
Less Common
05 - Blocked or leaking vents
The furnace or air handler must have good airflow to work properly. A blocked or leaking vent can prevent good air flow and cause inconsistent room temperatures.
Less Common
06 - Oversized air conditioner
An oversized furnace or air handler will quickly heat or cool the home and shut off. This causes acceptable temperatures in certain areas but not in others. The circulated air needs time to distribute evenly throughout the home; the air recirculating through the furnace or air handler for longer periods of time will produce better results.
Less Common
Frequently Asked Questions
Why does my Comfortmaker air conditioner have poor temperature control or weak airflow?
Can a thermostat cause my central air conditioner to have uneven cooling or not hold temperature?
Can a clogged filter or frozen evaporator coil make my AC not cool evenly?
What should I check if my Comfortmaker air conditioner has uneven cooling from room to room?
How do I find the correct Comfortmaker air conditioner replacement part?
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