When your HVAC system stops working, you have to troubleshoot the problem yourself. Unless you’ve got a background in HVAC, you’re likely going to scratch your head more than a few times before you figure it out.

HVAC systems are full of moving parts that wear down over time. At some point, you’re going to need to get a licensed HVAC contractor to take a look at your system and make the repairs that you can’t make on your own.

But what happens if you wait too long? How do you know when you need to hire an HVAC contractor? Keep reading for our top signs to hire a professional.

1. Noticeable Increase in Energy Bills

An inefficient residential HVAC system will cause energy bills to increase and can lead to other problems as well. Furthermore, an old system may need repairing HVAC units or replacing, and an experienced contractor can help determine the right system to install.

With regular HVAC maintenance, an HVAC contractor can help make sure that these systems are running and cut energy costs. Also, repairs might be necessary to prevent the system from breaking down or to replace old or damaged parts.

2. Unusual Noises From the HVAC Unit

Strange rattles and thumps that weren’t there before may show that something is wrong with the system and needs to check. A loud humming or buzzing may mean that the unit needs to be balanced or calibrated. Before you call in an expert, but, try turning the system off and on again.

A professional can inspect and diagnose your system and determine the best course of action. It is also possible that the noises are caused by a non-HVAC-related issue, such as a leak or pest infestation.

3. A Backup of Cold Air 

An off temperature’s caused by too much air circulating throughout your home, resulting in an accumulation of cold air in an area that should remain warm. Additionally, if the airflow’s restricted or diminished, it could be a sign of something blocking the airflow, such as a buildup of dust and dirt or damage to the system. It’s always best to have a professional come in and diagnose the issue before it turns into an even bigger problem.

4. Strange Odors From the System

These HVAC contractors can examine and diagnose the source of the odors and take steps to correct the issue. Odors could show mold growth within your ducts or could be the result of a malfunctioning unit. An experienced contractor can check your system, detect and repair any underlying problems, clean the ducts and replace or repair any necessary components.

5. A Thermostat That Is Not Working

Signs of a thermostat that’s not working include a lack of response in the thermostat to any changes in settings, no cooling or heating during the desired times, or a thermostat that won’t turn on. If you notice any of these issues, an HVAC contractor can come out to inspect, diagnose and repair your system. They will be able to pinpoint the cause of the problem, suggest the best course of action, and recommend any needed repairs or HVAC system replacement.

Knowing When you Need to Hire an HVAC Contractor

It’s important to make sure your home’s temperature and air are running. If you’ve been noticing any of the above signs, it’s time to hire an HVAC contractor.

Don’t wait until it’s too late. Invest in your home’s comfort and safety, and contact a contractor today.

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By Manali