Basic Guide To HVAC System Troubleshooting

There is nothing more annoying than an HVAC system that fails to cool in the summer, or heat in the winter. Even the most well-maintained HVAC systems are subject to unexpected failures, necessitating certain repairs to resolve the issues.

There are a few things you can do to troubleshoot the situation and get your HVAC system running smoothly. Let’s go over this basic guide and find effective solutions to potential HVAC issues.

Consult professionals

First things first, if the new HVAC system is not working as expected, check the system installation. Poor system installation can cause different problems that can cost you a fortune, like decreased energy efficiency, improper cooling or heating, poor air distribution, loud noises, and so on.

Before you start troubleshooting such issues on your own, call a professional HVAC service company and ask for advice. It’s always a good idea to seek professional assistance because you want to avoid causing bigger system problems due to a lack of knowledge, skills, and experience. So, if you live in Canada’s Niagara region, for example, look for professionals in HVAC installation in St Catharines who can provide you with the best solution for your specific needs.

Try to reset your HVAC system

One of the most basic things you can do for HVAC troubleshooting is to reset the whole system. Maybe some elements of the HVAC system, like the heat pump, air conditioner, or ventilation unit are stacked and require a process restart to be reactivated.

Keep in mind that all HVAC elements have different restarting methods, so always look at the manufacturers’ manual to do it properly. Additionally, you can check the manufacturer’s website and find the restarting instructions for your HVAC system or its components separately.      

Make sure the heating unit door is closed

Many heating units and furnaces have a sensor or switch which disables the heating if the door is not closed properly. So, if the heating HVAC components can’t start operating, turn off the heating system at first to stop the process.

Next, make sure to open the furnace door and close it again properly before you turn the heating on. This is a basic troubleshooting process you can try if you face similar problems with the heating units. To avoid any potential problems, check the units’ condition before using them.

Check for the thermostat issues

Thermostat issues are the most common ones when it comes to HVAC systems. If your thermostat isn’t working properly, your HVAC system won’t heat or cool at a comfortable temperature, will turn off at the wrong time, or will stop working entirely.

To troubleshoot these issues, the first thing you should do is to make sure that the thermostat is still functional. If it’s not, change the batteries if you have a battery-based thermostat or check the power supply. After that, don’t forget to reset the temperature settings.

Make sure the temperature is well set because many times it can be improperly changed by pressing the wrong buttons accidentally, thermostat resetting, and so on. If there is no troubleshooting progress, ask the manufacturer of your HVAC system for a new thermostat and replace it. 

Take care of the vents and filters

More often than not, the vents and filters in the HVAC system become clogged with dust, dirt, or physical objects, causing them to stop working. Their improper working can cause poor heating or cooling in your home, as well as decreased air distribution. All of this is a warning signal that it’s time for regular maintenance and cleaning.

Try to replace the old and dirty filter with a new one and clean the vents from the dirt. You can also consider calling HVAC professionals to do it for you. Clean vents and new filters will give you better air quality and proper airflow through your home, removing the risk of allergies and bacteria.   


A broken HVAC system or poor heating and cooling in your home can cause you a tough headache and unpredictable expenses. The troubleshooting process for HVAC issues is tricky and certain steps are required to fix a specific problem or replace some components.

If it seems like diving into the unknown for you, then it’s highly recommended to book a call with HVAC service professionals and consult with them. Remember to always check the system installation, vents, filters, and the thermostat if your HVAC system is not working properly or not working at all.

Furthermore, proper maintenance is required to keep the units in good condition, so clean all the vents, pipes, filters, and fan blades to prevent them from being clogged with dust and dirt. Take care of your HVAC system and enjoy all seasons at a pleasant temperature in your home.

Reveal Homestyle

Reveal Homestyle is a home improvement blog. It aims to share information and ideas to make your home a heaven on earth. Read about home improvement and maintenance.

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