My air conditioner has been gradually losing ground to the heat:
- FILTERS! Check your air filters. Dirty filters can restrict air flow, causing a loss in capacity and efficiency. This may also lead to more severe and costly problem .
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- Wash your outside air conditioner. Dirt, dog hair, cottonwood, grass clippings all get sucked into the air conditioner coil. Restricting that outside air flow severely impacts how well it cools, and makes your electric bill higher. Most air conditioners can be cleaned with a water hose. Either remove the top of the air conditioner and spray from the inside out, or at a downward angle if you aren’t comfortable removing the top.
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- Freon: A very rough approximation of your refrigerant charge can be made by feeling the larger copper line after the unit has been running a few minutes. Generally, it should feel cool to quite cold. If it is not cool at all, the system is either low, or it is a very high efficiency coil on hot day. A HVAC tech should be the one who adjusts charge on refrigerant. Incorrectly charging your air conditioner can cause permanent damage.
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- Undersized: One of the more common problems, especially on older systems. The engineering specs on air conditioning systems in central Oklahoma assumes a mid 90s temperature. If it has been 100+, especially for several days, a system sized based on load calcs will lose ground. We size our systems with some extra cushion for those hot days.