Furnace Heat Exchanger

HEAT EXCHANGER | cleaning the furnace

The heat exchanger is one of the most important parts of the furnace. It is responsible for circulating heat throughout the house. However, heat exchangers can get extremely hot and, if not properly cared for, can become plugged. Therefore, it is important to regularly clean your heat exchanger. If you notice your heat exchanger is getting hotter than usual or if it becomes plugged, you should have a professional inspect it as soon as possible. With proper care, your heat exchanger will last for many years.

Furnace Heat Exchanger
Furnace Heat Exchanger will burn items if anything falls in

If something does fall under the heat exchanger under that extreme heat it can burn and possibly even catch fire. We had an example the other day where we opened up the heat exchanger due to a smell coming from the furnace. Only to discover it was a heavy-duty flashlights that was left inside during the renovation. burning. The burning From the flashlight had actually melted some of the plastic components in the heat exchanger. If this had gone unnoticed, it could have eventually caused a fire. So, it’s important to be careful about what you leave around during renovations and make sure anything that could potentially catch fire is removed from the area.

The burning plastic on the heat exchanger was sending dangerous carcinogens and plastic smell throughout the house every time the furnace came on. This needed to be remedied quickly not only for the safety of the home’s occupants, but also to prevent further damage to the furnace. 


There is a common misconception that once a new furnace has been installed, it does not need to be cleaned at all. However, there are several different factors that can influence what falls into the furnace during the installation process. For example, metal shavings or debris from sawing can accumulate inside the furnace, as well as any wood chips from renovations and construction near the furnace. Therefore, it is important to have your new furnace thoroughly cleaned after installation in order to ensure that no harmful items find their way into the heating system. By taking this preventative measure, you can help to keep your furnace running smoothly and improve the overall efficiency of your home heating system.


One of the dangers of materials falling inside the furnace area is that it can create possible fire hazards. In addition, it can also cause inefficiencies due to using energy within the furnace itself. For example, if something gets clogged it may block airflow and cause the blower fan to run longer and harder, using more energy. In extreme cases, a house fire could start if there is a build-up of materials inside the furnace. Therefore, it is important to keep the area around the furnace clear to prevent any potential hazards.


Renovations tend to be one of the most common problems when it comes to the furnace getting dirty and clogged. If the furnace is running during colder periods or in the summertime with the air conditioner, the cold air return will pull in any drywall dust, sawdust or any other materials during the renovation into the furnace itself. This can quickly cause the furnace filter to become clogged, reducing the efficiency of the furnace and in turn, causing your energy bills to increase. In some cases, a clogged furnace filter can also cause the furnace to overheat and shut down entirely. To avoid this problem, be sure to keep your furnace turned off during any major renovations. You should also seal off any openings in your home that could allow drywall dust or other materials to enter, such as ductwork or ventilation grates. By taking these simple precautions, you can help keep your furnace running smoothly for years to come.


In order to maintain a healthy furnace and keep your home comfortable, it is essential to regularly clean and replace the furnace filter. Throughout the process of remodeling or construction, there can be large amounts of dust and debris produced, which can all get sucked into the furnace as air passes through. While the furnace filter will catch much of this dust, small particles may still make their way into other furnace components like the blower fan or the heat exchanger. In addition, even if your furnace filter is effectively filtering out dust and dirt, some of these particles may still end up getting blown through your furnace and into other parts of your home, such as the AC coil. Ultimately, in order to keep your furnace running smoothly for years to come, it is important to clean and replace your furnace filter on a regular basis. This will help prevent clogging and improve overall performance, ensuring that your home stays comfortable year-round.

Vacu-Man Furnace and Duct Cleaning to help!

Vacu-Man has been the trusted choice for construction companies, restoration companies, and countless homeowners over the past 45 years when it comes to ensuring safe and effective cleaning of furnaces and air duct systems. We hire licensed gas technicians with years of experience in the HVAC industry and are regulated by the Ontario government.   

Vacu-Man is dedicated to providing high-quality services that exceed customer expectations. Whether you are a home or business owner, Vacu-Man will work tirelessly to ensure you get the best results possible. With a family-owned ethos at its core, Vacu-Man remains committed to providing safe, dependable service that you can trust. So if you’re looking for reliable furnace cleaning or air duct system maintenance, look no further than Vacu-Man! 

Serving Oakville, Hamilton and Burlington