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HomeRepair HelpGarrison Central A/C RepairGarrison Central air conditioner has poor temperature control Repair
Garrison Central air conditioner has poor temperature control
When your Garrison central air conditioner has poor temperature control, start with the air filter, the most likely cause. A clogged filter restricts airflow through the furnace or air handler, reduces cooling capacity, and can cause the evaporator coil to frost over. Replace the filter as recommended, especially if you have pets or a dusty home. Next, check the wall thermostat. Failed electrical contacts can cause the AC to run intermittently, create AC temperature swings, or leave the AC not holding temperature. A multimeter can help test thermostat continuity. Blocked or leaking vents can also cause uneven cooling in the house, while an oversized air conditioner may cool rooms too quickly and shut off before temperatures equalize. Check these airflow and sizing issues before replacing parts. Enter your Garrison model number to find the exact replacement air filter, thermostat, blower wheel, control board, or other part for your central air conditioner. Turn off power before accessing components. Work involving 240V wiring, the condensing unit, refrigerant, or any sealed-system repair requires a licensed HVAC technician and EPA 608 certification.
01 - Garrison 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 - Garrison 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 - Garrison 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 is my Garrison central air conditioner not holding temperature?
Can a clogged air filter cause my central air conditioner to stop cooling evenly?
How can I tell if my central air conditioner thermostat is not working?
Why does my central air conditioner have weak airflow or uneven cooling from room to room?
How do I find the correct Garrison central air conditioner replacement part?
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