
A dirty furnace flue can be life-threatening, causing carbon monoxide poisoning, chimney fires, and debris buildup. A chimney cap with mesh is a must to prevent debris and animal nests from blocking the flue. Our professional sweeps are trained to inspect and maintain furnace flues so your home is safe and your heating system runs smoothly. Don’t leave your furnace flue unclean—call GMT Home Services today.
A furnace flue is part of a heating system that vents combustion gases outside the home. If not maintained properly, a flue can become a safety hazard and pose risks of carbon monoxide poisoning and chimney fires. A chimney liner is necessary to maintain the safety and function of the flue system by providing a protective barrier to the chimney structure. To avoid these dangers, you need to understand the risks of furnace flues and maintain your heating system to be safe and efficient. At GMT Home Services, we know the importance of regular furnace flue maintenance and annual chimney inspections.
Flue cleaning is necessary to prevent creosote buildup, reduce the risk of chimney fires and to vent combustion gases safely. Chimney cleaning is different from flue cleaning and requires specialized techniques and tools to clean the chimney itself. By cleaning your flue regularly, you will improve the efficiency of your heating system and reduce energy costs. Not cleaning the flue can lead to costly repairs, safety risks and, in severe cases, even fatalities. Scheduling annual inspections and cleaning is the best way to avoid these issues and keep the system running smoothly.

Flue cleaning is the process of removing combustion byproducts such as soot, creosote and debris from the flue. The flue is the pipe or channel that carries gases and smoke from a combustion source, like a wood-burning fireplace or furnace, to the outside of a building. This is a critical part of your heating system. Flue cleaning ensures that harmful substances are vented out and do not build up in the chimney and cause hazards like chimney fires and carbon monoxide buildup.

At GMT Home Services, we know that while furnace flues don’t face the same risks as wood-burning stoves or fireplaces, the dangers they pose can be just as serious. Gas and oil furnaces produce acidic condensate that can eat away at the flue lining over time. When a clay liner deteriorates, broken fragments can create blockages and prevent harmful gases like carbon monoxide from venting out. Carbon monoxide is the leading cause of accidental poisoning in the US because it’s colourless, odourless and tasteless. The only way to detect it is with a carbon monoxide detector, so every home with a fuel-burning heating system should have one installed and checked regularly.

Furnace flues can also be obstructed by other means, like animals or birds entering the chimney, if a proper cap with mesh isn’t installed. Regular cleaning of utility flues is necessary to prevent dangerous blockages that can lead to serious risks like carbon monoxide exposure. Nests and debris can block the flue and deteriorating chimney masonry can further restrict ventilation. Keeping the flue clear of all obstructions is necessary to prevent carbon monoxide buildup and safe furnace operation.

Proper flue sizing and configuration are also important for safe operation. Our chimney professionals at GMT Home Services ensure your furnace’s venting system meets manufacturer specifications. When the flue is the wrong size, excess moisture can accumulate in the combustion gases, which can be very damaging to the chimney and flue system.


Our industry-leading cleaning and repair company operating in Connecticut, Massachusetts, and Rhode Island. With a proven 12-year track record, we’ve successfully completed over 2,781 projects in the area. With years of professional experience and a strong commitment to customer satisfaction, we consistently uphold our legacy of excellence in every job we complete.
Local building codes require the flue to be cleaned and inspected before converting an appliance to gas. Ignoring this step can lead to big problems. Residual soot or oil from previous fuels can accumulate, and when combined with the moisture from a gas furnace, it can clog the flue opening and clean out pit. To avoid these issues, rely on our experienced team to inspect, clean, and maintain your furnace flue for safe and efficient operation.

A flue is a passage – whether a channel, tube or pipe – through which gases and smoke from a combustion source exit to the outdoors. It uses natural draft, the upward flow of air created by temperature and pressure changes, to vent combustion byproducts from the home.
The chimney is the structure that encases the flue. Often built from materials like masonry, brick, or stone, it extends above the roofline. In some cases, when there’s no flue or liner, the chimney itself becomes the flue. To get the best performance, you can hire a contractor for flue installation or chimney relining.

Chimney sweeping is a type of flue cleaning, sometimes called fireplace flue cleaning. It involves using specialized tools to remove tough combustion byproducts like stubborn soot and creosote buildup.
Utility flue cleaning is the cleaning of the vertical flue connected to appliances like water heaters, furnaces, and boilers. These appliances don’t produce creosote, so their flues don’t accumulate as much debris. Therefore, utility flue cleaning doesn’t require aggressive cleaning methods or specialized equipment.

The flue cleaning process involves using specialized equipment, such as brushes and vacuums, to remove debris and combustion byproducts from the flue.
In some cases, chemicals or cleaning agents may be used to break down and remove stubborn deposits.
Depending on its condition, the flue may need to be disassembled or accessed through the roof or a wall to be cleaned thoroughly.
Because of the complexity and hazards involved, it’s highly recommended that flue cleaning be done by a qualified professional, like an expert chimney sweep, to ensure the job is done safely and correctly.

Flue cleaning can be dangerous, so it’s important to take specific safety precautions to avoid injury or illness. Key safety measures include:
Wear protective gear, such as gloves, safety glasses, and a dust mask, to avoid exposure to debris and combustion byproducts.
Clear the area around the flue of combustible materials and make sure the flue is ventilated.
Use proper ladder safety when accessing the roof or other elevated areas.
Don’t use open flames or sparks near the flue, as they can ignite combustible materials.
Make sure the flue is clean and inspected before use to avoid carbon monoxide poisoning.
By following these precautions, you can minimize the risks of flue cleaning and stay safe.

With years of professional experience and a strong commitment to customer satisfaction, we consistently uphold our legacy of excellence in every job we complete.




EXCELLENT Based on 356 reviews Posted on Daniel JacobTrustindex verifies that the original source of the review is Google. GMT Chimney Services did an outstanding job installing a new liner in my chimney. Their price was nearly half of what other companies quoted, and the work was excellent. My chimney wasn’t drafting correctly, which caused my water heater to break. After the liner was installed, the issue was completely resolved. Highly recommend for their fantastic work!Posted on Gary SandersonTrustindex verifies that the original source of the review is Google. Outstanding service with Joe he was very helpful and I would recommend gmt and JoePosted on Kevin HealyTrustindex verifies that the original source of the review is Google. We had Joe work on a gas fireplace in our new home. He was prompt, polite, and a pleasure to deal with. I would absolutely use this company again and felt he went above and beyond to assist usPosted on josh aTrustindex verifies that the original source of the review is Google. 3.5 stars Not the worst not the best experience.. the guys that came and did inspection were great and knowledgeable, the guys that came and did the liner were also great.. Juan that came to check out my fireplace and put on the caps was excellent.. the guys that came and did the pointing, and outside work did ok work but didnt communicate with us... never rang doorbells or gave us calls, not good communication.... this comapny expect you to be home almost at all times says they will work with you in times so, scheduled a day to come work and needed someone to be home wife took day off and they tried to tell us no one was home didn't even knock or ring door bell... just left tried to tell us no one was home and that they rang door bell and knocked.. we have cameras and ring door bell and wife took day off.. one week goes by no calls nothing gave us 30 min notice called abut 9a.m to show up around 930... again the workers were all pretty good but the communication between them the lady in the office and home owners should be better.. she Called and asked for payment job wasn't complete.. caps were not install.. Juan came out again was great did what he had to do and bill was paid.. I'd love to use them again for a cleaning because the work was ok and some of the guys doing the work. But they need to realize that people work for a living and cant be home at all times and some of the workers and the office need to be able to communicate with the home owners and possibly each other a bit better.. the pricing was average better then some others and work was overall ok.. if your someone that can be home often this company will be perfect for youPosted on MariaTrustindex verifies that the original source of the review is Google. Joe was fantastic and very quick! Looking forward to using this service again!Posted on Toby CarotenutoTrustindex verifies that the original source of the review is Google. Very good service, installed a liner in a few hours. Very professional. Would use again!Posted on saikiran sikaTrustindex verifies that the original source of the review is Google. Nice workPosted on Ravi GopieTrustindex verifies that the original source of the review is Google. Joe came to check my fireplace since I wanted to make sure I was good for the season before lighting it. He did a wonderful job of explaining that the fireplace was safe to use this year and advised me of when to contact them for a cleaning. He checked the firebox, and explained what was happening in the flue. I will certainly be calling GMT again for my future cleanings because of this interaction. Joe was friendly and warm, and did a great job explaining how to use the fireplace.Posted on אילן חרוביTrustindex verifies that the original source of the review is Google. Great service! Joe is a real professional. Very thorough and with a lot of patience. Recommend with all my heartPosted on Krushna PatiTrustindex verifies that the original source of the review is Google. I would highly recommend GMT services. Joe is not only very professional and knowledgeable as well as respectful of time. The fact he got the job done within minutes shows how experienced he is.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Ensure the safety and efficiency of your fireplace by scheduling your relative chimney service with GMT Home Services today we are committed to providing top-notch various chimney services to ensure your home is safe and your fireplace is running efficiently.
Our experienced technicians offer a comprehensive range of chimney services tailored to your specific needs. From thorough cleaning and inspections to repairs and maintenance, we’re committed to keeping your home safe and your fireplace functioning optimally.
Experience the benefits of a cleaner, healthier home by scheduling your required chimney service with us today.
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