Why does my AC only work on the highest setting?
When a blower resistor fails, the highest fan speed usually is the only one that still works because it essentially bypasses the resistor and receives the maximum amount of voltage. When the resistor is working, it reduces the amount of voltage going to the lower fan speeds, so the fan runs slower.
Why is my thermostat reading higher than setting?
If your mechanical thermostat is reading higher than the set temperature, it is because the mercury vial, known as the mercury switch, is not completely straight. The mercury switch sits inside the thermostat and lays horizontally. If the switch is tilted at all, it affects your thermostat’s accuracy.
Which setting is best for AC?
According to the Department of Energy1, 78° Fahrenheit is the sweet spot for air conditioners to balance energy savings and comfort when people are at home and need cooling.
Why does my AC never reaches set temp?
Loose wiring is another common culprit to a thermostat not reaching set temperature. Corrosion could also be happening with your wiring, or there could be a buildup of dust, which could also lead to system issues. Once an HVAC expert opens up your thermostat, they’ll be able to determine the problem.
Why is my AC not working as well as it should?
Humid air outdoors is rough on your AC’s condenser coils, and they can get grimy in a hurry. That layer of dirt and debris hurts the unit’s ability to release heat. As a result, the AC does not operate as efficiently and may have more trouble removing humidity from the air inside. 2. Get a preventative maintenance plan
What should the air conditioner be set at at night?
We recommend using these settings as a starting point and then adjusting to your comfort levels: 75° F during the day if people are home and at night when people are asleep; 80° F during the day if no one is home; However, this constant adjusting of the air conditioning can get a bit old — and you’re likely to forget to make those manual changes.
What should I do if my AC is cooling in 10 degree increments?
If your AC system previously cooled indoor air in 20 degree increments, it now may be cooling in 10 degree increments; the air conditioner works harder to condition the same amount of air. Have your preferred HVAC technician repair the leak, refill refrigerant and recalibrate.
Why does an air conditioner have to be on all time?
How Air Conditioners Work. By keeping your air conditioner on at all times during the day, you’re not using an air conditioner efficiently, because leaving the air on all day (even when you’re not home) results in a higher use of energy.
https://www.youtube.com/watch?v=OD2snI73BI4