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HomeRepair HelpKenmore Central A/C RepairKenmore Central air conditioner has poor temperature control Repair
Kenmore Central air conditioner has poor temperature control
If your Kenmore central air conditioner has poor temperature control, the most likely cause is a clogged or dirty air filter restricting airflow through the furnace or air handler. Reduced airflow can make the AC temperature inaccurate, cause uneven cooling in the house, and contribute to temperature swings. Replace the air filter at least twice a year, or more often in dusty homes or homes with pets. Next, check the wall thermostat, which controls power to the furnace or air handler and condensing unit; failed contacts can cause the air conditioner to operate intermittently or not hold temperature. Less common causes include blocked or leaking vents that limit airflow, or an oversized air conditioner that cools too quickly and shuts off before temperatures even out. Enter your model number to find the exact replacement air filter, wall thermostat, wall thermostat, or other part for your specific Kenmore central air conditioner. Filter and vent checks are generally safe DIY repairs. Thermostat testing involves low-voltage wiring, but shut off power before servicing and do not work inside the disconnect box or condensing unit unless qualified, since line voltage can cause serious injury.
01 - Kenmore 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 - Kenmore 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 - Kenmore 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 Kenmore central air conditioner have poor temperature control?
Can a clogged air filter cause weak airflow and uneven cooling?
How do I test a Kenmore thermostat that is not holding the temperature?
What should I check if my central air conditioner is freezing up or not removing humidity?
How do I find the correct Kenmore central air conditioner replacement part?
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