Top 8 Reported Problems with Residential HVAC Systems
Residential HVAC systems are known to be troublesome. This is why air conditioning units require regular, biannual maintenance. This can also help to alleviate the need for unnecessary repairs, increase efficiency and extend the lifespan of your system. However, if you do encounter an issue with your HVAC system, you’ll want to understand what’s going on. Contact Dial One Johnson Plumbing, Cooling and Heating for residential HVAC service at (469) 557-2703. Read further to find out the eight most common problems with residential HVAC systems.
1. Air Conditioning Unit is Not Powering OnAn air conditioner that is not powering on can be an easy fix. If your air conditioner is not turning on, check the batteries in your thermostat. Replacing old batteries can prevent a thermostat from turning off. Make sure to have the “cool” setting in place with the appropriate temperature setting. If the AC is still not turning on, check the circuit breaker to see if the switch is flipped. Switch it back to the ‘on’ position if it was turned off. Contact an air conditioning specialist to complete an AC repair.
2. HVAC Not Blowing Cold AirA clogged air filter is a common issue that often goes unnoticed. However, if you notice that your HVAC is only blowing out hot air, you may have a clogged air filter. The air filter is responsible for filtering out any dust and debris that comes through the ductwork. If the air filter is dirty, it can limit the cooling capability of your air conditioner. Changing out the filter every one to two months can help increase the efficiency of your AC.
3. Air Conditioning Unit Freezing Up OutsideA common problem with an HVAC unit is when it freezes up outside. This is due to many things but the usual cause is cold temperatures. In the south, there can be a lack of insulation around your pipe lines and your AC unit. There is a common misconception that because of the hot temperature that exists for most of the year, piping and HVAC systems don’t require insulation. The air conditioner may also have low refrigerant levels that can end up freezing your evaporator coil. The refrigerant helps to keep the pressure consistent. The outside unit can have poor airflow which can cause freezing and frost on the system. Schedule necessary AC or heating repair and maintenance to ensure that everything is in working order.
4. Electric Controlling Mechanism FailureThe wear and tear of air conditioning units is common. If you constantly turn your AC on and off it can increase the wear on compressor belts. Sometimes, if one part of the electrical connection has an issue, it will prevent the air conditioner from turning on. The connection is important as it aids in the function of the AC unit. If you suspect there is something wrong with the controlling mechanisms in your air conditioner, schedule an appointment with an expert technician to find the root of the problem.
5. AC Coolant LeaksThe air conditioning coolant is responsible for keeping the pressure inside the air conditioner stable. A refrigerant leak is not uncommon but needs to be fixed as soon as possible. A leak of refrigerant can lead to:
- Low output
- Higher energy need
- Evaporator coil freezing
- Broken compressors
- Irregular cooling
6. Weird NoisesStrange noises are one of the easiest ways to tell if something is wrong with your air conditioner. An air conditioner should not make any noise while in operation other than a low hum or rumble. If you do hear noises then it is indicative of a malfunctioning part within the air conditioning unit. Here are some noises you may hear:
- Hissing noises may come from a refrigerant leak.
- Thumping or knocking noise could be a malfunction with the assembly of your AC blower or motor.
- Screeching noises are usually caused by the compressor but can sometimes be the fan motor.
- Humming and buzzing typically means there is a problem with the electrical connection.