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HomeRepair HelpGoodman Central A/C RepairGoodman Central air conditioner has poor temperature control Repair
Goodman Central air conditioner has poor temperature control
If your Goodman central air conditioner has poor temperature control, uneven cooling in the house, or the AC temperature is not accurate, start with the air filter. A clogged air filter 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. Faulty electrical contacts can prevent the furnace or air handler and condensing unit from operating correctly, causing the air conditioner to cycle intermittently or fail to hold the set temperature. A multimeter can test thermostat continuity, but shut off power before replacing any part. Blocked or leaking vents are another possible cause because they reduce airflow and keep conditioned air from reaching some rooms. Finally, an oversized Goodman air conditioner may cool too quickly and shut off before temperatures distribute evenly. Enter your model number to find the exact replacement air filter, thermostat, or other part for your specific unit. Avoid working inside the condensing unit or on 240V wiring unless qualified; have a licensed HVAC technician handle line-voltage repairs or any sealed-system work involving refrigerant.
01 - Goodman 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 - Goodman 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 - Goodman 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 Goodman central air conditioner have poor temperature control?
Can a clogged air filter cause my central air conditioner to stop cooling properly?
How do I know if my Goodman thermostat is not working?
What should I check when my Goodman central air conditioner is not cooling evenly from room to room?
How can I find the correct Goodman central air conditioner replacement part?
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