A malfunctioning HVAC unit, especially during cooler months, can leave the home feeling chilly and uninviting. In addition, it can cause a spike in energy bills and require frequent repairs. To get ahead of a serious breakdown, be on the lookout for the following signs.

1. Unusually high electric bills

It’s normal to see a spike or dip in electrical bills between seasons, but if your usage hasn’t changed from that of the previous year and you notice an unusual change in monthly costs, the system may not be performing at its peak capacity. There could be a myriad of reasons for this and the best way to find out what’s behind unusually high electric bills is to call Roger The Plumber for professional HVAC services. We’ll send out a technician to inspect your entire system and provide a detailed explanation of what the issue(s) may be.

2. Clogged air filters

The air filter removes harmful particles and contaminants from the air, before pushing the clean air into the home. Over time, it becomes clogged with dust and debris, making it harder to circulate air through the system and placing a heavy strain on the unit. Be sure to replace the filter at the beginning of every season — once every three months — to keep the air flowing smoothly.

3. Leaking or dirty AC coils

If dust and debris collect on the evaporator coils inside the blower, this can cause the system to stop functioning. Cleaning the coils multiple times a year can help prevent this.

If evaporator coils become corroded, they can begin to lead and cause the system to lose charge. This reduces efficiency and drives up energy costs.

4. Wear and tear on the motor

The AC motor needs lubricant to function smoothly. Lack of lubricant will cause wear in the motor bearings and windings, draining energy from the system.

5. Malfunctioning thermostat

Issues with the thermostat sensor can lead to the wrong temperature being set on. Call Roger The Plumber to replace the thermostat sensor. 

6. Improperly sized unit

Having a bigger or smaller HVAC unit won’t cut down energy costs. In fact, it will do the opposite. An undersized unit has to work overtime to heat the home, while an oversized AC short-cycles.

7. Old age

Eventually, the cost of maintenance and repairs exceeds the cost of a new system. Your best option is to replace it with a newer, more efficient HVAC system.