If the hot and humid summer air has your whole family feeling lethargic, a new air conditioner cannot arrive soon enough. An air conditioner can literally breathe new air into a house. 

What a huge disappointment to discover musty, moldy, and warm air circulating after the air conditioning installation. But before you rush to return a faulty air conditioner, check your entire HVAC system. You can avoid a rude awakening to warm air by having your HVAC system fine tuned at the time of your air conditioning installation.

Dirty Air Ducts 

You wouldn't change the oil in your car without changing the dirty filter. By the same logic, you do not want to install your new air conditioner and leave the air ducts dirty. Airborne debris such as dust and dirt build up in the duct work in walls and ceiling. Left to accumulate, the airborne debris can lower the amount of clean air flowing from ducts. When the air conditioner is running, it will take longer and more energy to cool the home. 

Sensor Malfunctions 

The air conditioner's temperature sensor senses the temperature of the air. If the air is warmer than the thermostat temperature, the compressor starts to cool the room. If the temperature is lower, the compressor will shut off. In most cases, the sensor performs its function dutifully.

The air conditioner also communicates with other HVAC sensors. And if they fail, the air conditioner could begin to function erratically. 

  • Duct smoke detectors to sense fire, smoke, and gases
  • ​Occupancy sensors that sense the presence of people in a room through heat and movement. 

If one of these sensors malfunctions, the AC could receive faulty signals. In response, the AC unit may fail to turn on or start to cycle. 

Faulty Thermostat 

If you have an old electrochemical thermostat, it may no longer be up to the job of accurately controlling heating and cooling. These mechanical thermostats must be manually adjusted. Dust buildup or faulty wiring may be the culprit. If the thermostat is the issue, updating to a programmable thermostat can remedy the problem with the older model and provide new functionality, such as the ability to preset and automatically adjust the temperature. Importantly, it can interoperate with the microchip on your newly installed air conditioner, automatically adjusting to home occupancy and electricity prices.

Your air conditioner is part of an HVAC system. An air conditioner installer who is also an HVAC contractor can perform all the necessary preventive maintenance issues at the time of the AC installation. The whole functioning of the HVAC system is only as good as its parts.