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If your brand new air conditioning units are running excessively and not cycling off even when the weather is not very hot outside, there could be several possible reasons for this issue. It's good that you've already contacted the company to have them inspect the units. Here are some potential causes for the constant running:

  1. Incorrectly sized unit: If the air conditioner is undersized for your house, it may struggle to cool the space efficiently, leading to continuous operation. Similarly, if the unit is oversized, it may cool the space quickly but then shut off before properly dehumidifying the air, causing it to turn on again shortly afterward.

  2. Air leaks: Air leaks in the house can cause warm air to enter and cool air to escape, which forces the air conditioner to work harder and run longer to maintain the desired temperature.

  3. Thermostat issues: A faulty thermostat can lead to incorrect temperature readings, causing the air conditioner to keep running to reach a target temperature that is not being properly sensed.

  4. Dirty air filters or coils: Dirty air filters and coils restrict airflow and reduce the efficiency of the air conditioner, making it run longer to achieve the desired cooling.

  5. Refrigerant leaks: Low refrigerant levels can lead to inefficient cooling, causing the air conditioner to run constantly in an attempt to reach the set temperature.

  6. Improper installation: If the air conditioner was not installed correctly, it may not function optimally and may run excessively.

Regarding your utility bill, running the air conditioner constantly will likely increase your energy consumption and, subsequently, your utility bill. Normally, an air conditioner should cycle on and off to maintain the desired temperature, so if it's continuously running, it's consuming more energy than necessary.

To address the issue and potentially lower your utility bills, it's crucial to have the air conditioning company inspect the units thoroughly. They should check for any of the mentioned potential problems and ensure the units are functioning optimally. If there's an issue with the equipment, they should be able to repair or replace the faulty parts. If the problem is related to improper installation or sizing, they may need to make adjustments or suggest alternative solutions.

In the meantime, you can also help improve the efficiency of your air conditioning by:

  • Keeping doors and windows closed when the air conditioner is running to prevent warm air from entering.
  • Ensuring your house is well-insulated to retain the cooled air.
  • Regularly cleaning or replacing air filters to maintain good airflow.
  • Using ceiling fans to help circulate cool air and improve comfort.
  • Setting your thermostat to a reasonable temperature that keeps you comfortable without overworking the air conditioner.

Once the issue is resolved, your air conditioner should operate more efficiently, potentially reducing your utility bills.

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