Have you ever wondered what goes into a heating or air conditioning system for a large office building or another large building like a mall or a school? My name is Evelyn, and I am an HVAC architect. I design heating and air conditioning systems for large, corporate buildings. Making sure that a large building with many rooms or offices is efficiently heated and cooled is a very large job and is much more complicated than simply heating or cooling a home. This blog will educate the reader on how heating and cooling jobs this large are designed and completed.
You rely on your central AC unit to cool your entire home on hot nights. When the HVAC system fails to work properly, it can lead to frustration. Luckily, many problems can be resolved with professional AC repair. Learn more about common central AC problems (and what causes them).
1. No Cool Air
In this situation, the unit has power and the correct temperature setting, but it emits warm or even hot air instead of cold air. This can happen if refrigerant levels get too low or the air filter/ducts get clogged with dirt and debris. A damaged component inside the unit can cause the problem, too.
2. Power Issues
All air conditioners use electricity, unlike other appliances that offer both gas and electric models. A power surge can cause the unit to shut down. You may be able to restore power by resetting the circuit breaker — unless the outlet can't support the unit or the power cord shows damage. When the unit trips the circuit breaker repeatedly, the outlet probably can't support the air conditioner. If the unit constantly restarts a new cycle, it may not be the right size. Proper installation can prevent most ac power issues.
3. Inefficient Operations
Air conditioners use energy when running. Air conditioners too small for a particular home will operate constantly in an attempt to reach the desired temperature, increasing the utility bill each month. If the thermostat or a related component experiences damage, it can also cause the unit to run endlessly.
4. Refrigerant Leak
Refrigerant is the lifeline of your central AC, transforming from liquid to gas as it cycles through the HVAC system. Since the refrigerant plays a primary role in creating the cold air that gets distributed throughout your home, your system won't produce cold air if you experience a leak. Since refrigerant lines aren't easily accessible, you should look for blue stains near the unit as a sign of a leak.
Never handle refrigerant yourself or refill refrigerant yourself. Refrigerant is highly toxic, and only professional HVAC technicians should refill refrigerant or repair a refrigerant leak.
5. Unusual Noises and Smells
When components get loose inside of the unit, they may bang around inside when it runs. Components will continue to release from their position and experience more damage. When components rub against material inside of the unit, it can create a burning smell, too. If not repaired quickly, the unit can catch on fire.
When in doubt, turn off the AC until a service such as Fred Williams and Sons Heating & Cooling can examine the situation for you.