10 Signs That Indicate Something Is Wrong With Your HVAC System

November 1, 2023
Posted in: Homeowner Tips

HVAC systems are durable for the most part. However, sometimes they can break down unexpectedly. The most obvious sign of a problem is if your HVAC system stops working entirely. However, there are usually warning signs before that, which can help you take preventive steps to ensure your HVAC does not break down when you require it the most and leave the building occupants in discomfort. 

If you notice any of the following signs during your regular HVAC system monitoring, contact your HVAC specialist to investigate and take action before the HVAC system breaks down completely:

Unusual Noises: HVAC systems tend to be noisy by design, but there could be a problem if you notice it getting louder or making strange noises more than usual. Unusual noises coming from your HVAC system, such as banging, rattling, or grinding sounds can be caused by various issues, such as loose components, worn-out belts, or damaged bearings.

Visible Rust: If you can see rust or other visible deterioration on your HVAC system, that part most likely requires a replacement.

Water Leaks: If you notice water puddles or leaks, it indicates that something needs fixing. Take care of the issue as soon as possible to avoid water damage to your building.

Low Refrigerant Fluid Levels: Your HVAC works as a closed system, so if you see that the refrigerant fluid level is consistently low, it could indicate that there’s a leak somewhere. Leaking refrigerant costs you more money, reduces HVAC performance, and harms the environment. 

High Energy Bills: If you notice that the energy bills are higher than they used to be, it could be a sign that there is something wrong with your HVAC system. High energy bills can be caused by a range of issues, such as a dirty air filter, leaky ducts, or malfunctioning components.

Reduced Comfort: Since components of an HVAC system are hidden, it’s not always easy to identify problems. This is why feedback from building occupants should be taken seriously, as it often provides forewarnings to underlying issues. An increase in complaints about temperature, humidity or air quality is a sure sign something in your HVAC isn’t working as it should.

Strange Odours: If you notice strange odours coming from your HVAC system, such as a musty or burning smell, it could be a sign of an underlying problem. These odours can be caused by a variety of issues, such as mold growth, overheating components, or a gas leak.

Short Cycling: If your HVAC system is turning on and off frequently, it could be a sign of short cycling. Short cycling can be caused by a number of reasons including a malfunctioning thermostat, dirty air filter, or faulty compressor.

Constant Running: Sometimes, constant running of your HVAC system without proper heating or cooling of the space can indicate a problem with your system. Constant running can be caused by a variety of issues, such as a malfunctioning thermostat, a dirty air filter, or a refrigerant leak.

Carbon Monoxide Detector Alarm:  If your carbon monoxide detector goes off, it could be a sign that there is a problem with your HVAC system. A number of factors, such as a malfunctioning furnace or a blocked vent can cause carbon monoxide leaks.

Get Professional HVAC Services Near You

It’s one thing to recognize the signs of a faulty HVAC system and another to know how to identify and fix the issue. It is best to leave it up to the professionals.

If you want to save money on energy bills and costly repairs, it’s best to hire an HVAC technician as soon as possible. HVAC problems can lead to serious issues for your building and the health of occupants. Connect with Taunton Trades – your HVAC specialists in Durham and the GTA and stay worry-free with professional HVAC services. Call us at 905-493-4227 or email at


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