Answers to 5 most common HVAC problems, Heating ventilation and air conditioning guide, Get home heat advice

Get Answers to 5 Most Common HVAC Problems

10 May 2023

If your heating or cooling system is not working properly, there might be a problem that requires service. HVAC problems can occur for several reasons, including inadequate maintenance or installation of cheap aftermarket parts. Here are five common HVAC problems and some tips on how to fix them.

Faulty Thermostat

A faulty thermostat is a common HVAC problem. If the HVAC system is failing to maintain the desired temperature throughout your home, the issue may lie with the thermostat settings. If the thermostat is not relaying information back to the HVAC system, it could be because of dead batteries. Replacing the batteries could be a quick fix to the issue. It is also possible that the thermostat is malfunctioning because it requires calibration or the sensors are dirty. An HVAC technician can identify issues with the thermostat and fix them.

Increased Electricity Consumption

A common problem with HVAC systems is an unexpected increase in energy consumption. An increase in energy bills is often a result of malfunctioning components. For example, a dirty air filter can cause utility bills to spike. Dirty air filters can make it difficult for the unit to draw air into the system and cause debris to build up on other components, putting extra stress on the entire unit.

Other damaged or poorly maintained components can also increase energy consumption. Neglecting regular maintenance can also cause other HVAC components to consume more energy. Issues with the thermostat can also result in increased electricity consumption.

Water Leakage

The drainage system of the HVAC is designed to remove condensation from the system. However, if the HVAC suffers from water leaks, that water might pool inside the system or leak indoors.

Although the HVAC system will continue running when it leaks water, there will be a noticeable decrease in its performance. An HVAC leak is often linked to a problem within the drain line. It could be that the drain pipe is disconnected or clogged.

It is also possible that the drain pan in the air handler is damaged, causing the water to leak into the system. If the drain pan is cracked, you may be able to patch the cracks with a sealant, but it would likely only be a temporary fix. Any problem leading to water leakage from the system should be inspected by an HVAC technician to prevent further water damage.

Blown Fuse or Tripped Circuit Breaker

A tripping circuit breaker or blown fuse can cause your HVAC system to stop working. To determine if there is a blown fuse or the circuit breaker is tripping, you can take a look at the main service panel or the fuse box or check this guide.

In the circuit breaker box, locate which circuit powers the system, switch it OFF, wait a few seconds, and then switch it back ON. If you have a blown fuse, you may have to replace it. Also, if the breaker is tripping frequently, there could be an issue with the wiring.

Dealing with electrical problems without experience and necessary equipment is not advised because it can be a safety hazard. Instead, it would be best to call a professional HVAC technician.

Unusual Noises

If you hear a clicking sound every time the system starts running, you have nothing to worry about. However, if there is persistent noise, it can indicate a problem with one of its components. For example, if the system is squealing, the motor bearing or belt may be defective.

Similarly, if the unit makes a hissing sound, there could be a leak in the ductwork. Loose objects, such as screws in the unit, often cause rattling sounds. When the HVAC unit makes an unusual sound, don’t ignore it, as the problem can worsen over time. Neglecting such issues can also cause damage to other components of the HVAC, requiring costly repairs. A technician from a reputable HVAC company can identify the source of the problem.

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