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HomeRepair HelpIntertherm Central A/C RepairIntertherm Central air conditioner has poor temperature control Repair
Intertherm Central air conditioner has poor temperature control
When your Intertherm central air conditioner has poor temperature control, check the air filter first. A clogged air filter restricts airflow through the furnace or air handler, reduces cooling capacity, and can cause the evaporator coil to frost over, leaving the AC not holding temperature or producing uneven cooling in the home. Next, inspect the wall thermostat. Failed electrical contacts can prevent the furnace or air handler and condensing unit from operating correctly or can make the system cycle intermittently. A thermostat can be tested for continuity with a multimeter, but turn off power before accessing wiring and use caution around electrical components. Blocked, damaged, or leaking vents are another possible cause because they keep conditioned air from reaching certain rooms. Finally, an oversized air conditioner may cool too quickly and shut off before air circulates evenly, causing inaccurate AC temperature readings and room-to-room temperature swings. Filter replacement and vent checks are generally DIY repairs, while thermostat wiring and other line-voltage work should be handled by a qualified technician. Enter your Intertherm model number to find the exact replacement air filter, thermostat, or other part for your central air conditioner.
01 - Intertherm 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 - Intertherm 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 - Intertherm 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 Intertherm central air conditioner have poor temperature control?
Can a clogged air filter cause weak airflow and central air not cooling evenly?
How do I know if my Intertherm thermostat is causing poor temperature control?
Why does my central air conditioner turn on and off before the house cools evenly?
How do I find the correct Intertherm central air conditioner replacement part?
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