Resources + Tips

Question: Why are the bags on the top of the furnace truck floppy?

Furnace cleaning trucks have a very distinct look and sound. When one is operating, you can hear it from a block away. When you see it there are normally several bags sticking out of the top of the truck. Have you ever wondered what those bags are for? 

Generally, people assume that the bags on the top of the furnace truck is the vacuum. When the bags are sticking straight up it must mean that the cleaning is underway, right?

The bags are actually an exhaust dust filter for the vacuum. Think of the little dust filters that you can buy for a shop vac that clip on the exhaust air port to prevent dust from filling the room. The bags are like those, but on a much larger scale.

The vacuum that sucks all the dirt out of your furnace system is actually located inside the truck. It’s very obvious when the vacuum is on and the cleaning is taking place – because you can’t hear anything else! The vacuum makes a very loud humming noise when operating, and as long as the sound is blasting, the vacuum is doing its job (and so are our technicians). 

If the bags aren’t sticking up straight, am I getting as good of a furnace cleaning?

Yes. Another assumption people have about the bags on the top of the furnace truck is that if they aren’t sticking up straight, the cleaning isn’t as good. But this is not the case. 

The bags filter out dust and debris from many houses, and every couple of months we have to clean them out because as you can imagine, they get filthy. The dirtier the bags are the more the airflow is restricted. This is because less air can get through the build up of dust, causing the bags to stick up in the air. 

So when you see bags that look like this:

…you know that a truck with recently cleaned bags is servicing your furnace system!

We proudly maintain our trucks at peak performance level, so whether the bags are floppy or sticking straight up in the air, you can trust that your furnace is getting the best cleaning possible.


More Posts

What Our Customers Have To Say

A big shout out to Andrew and Aaron from Alberta Furnace Cleaning. My husband and I had recently renovated our home and were noticing a fine dust on everything that I couldn’t keep up with. Andrew and Aaron came in and cleaned the furnace, air conditioning unit and all the duct work. It was shocking to see what the found - construction debris, dog toys, tennis balls etc. They definitely have the equipment to thoroughly clean the mechanical and duct work. Both workers used care in removing vent covers, and cleaned all surfaces, properly replacing the grills when done. They were on time, efficient, polite and respectful of ourselves and our home. I could not be happier.

- Kerri Davis

Professional and Excellent Service! The team explained the entire process clearly and even showed me how dusty the furnace was. They performed their duties meticulously, ensuring everything was cleaned thoroughly. Highly recommend their services!

- SB

Great experience from start to finish. Easy to schedule, great communication and helpful information provided in advance. The techs were friendly, professional, and sweet. My house smells cleaner and it was money well spent. Will be booking again in a couple years for the next clean!

- Kelly Johnston

I recently had my furnace cleaned by this company and I couldn't be happier with the service. The technician was very knowledgeable and took the time to explain everything to me. The price was very reasonable compared to other companies in the area. I highly recommend them for any furnace cleaning needs.

- Rewa Arabi

Alberta Furnace Cleaning and its awesome crew, Jospeh, Salvador and Ali, did a wonderful job! They were very informative, so personable and efficient! We also appreciated their concern and attentiveness with our pets and our home! Highly recommended!

- Anna Dawson

We are very happy with the service provided cleaning the furnace and ducts. The communication regarding the appointment and the arrival time of the technicians was excellent. The technicians were very professional and polite. Highly recommend this company and will use them again in the future.

- Tracey Orme

TEXT US