From the historic Victorian homes downtown in Mansfield Center to the modern Colonials around Maple Street, residents rely heavily on furnaces and boilers for central heating. While homeowners typically focus on maintaining the appliance, the venting system is often overlooked. At Horizon Chimney Services, we have specially trained and certified technicians who service furnace and boiler flues in Bristol County and throughout Eastern MA/RI, ensuring that your home’s exhaust system is as reliable as its heating system.
Why Your Flues for Furnaces and Boilers Need Cleaning Too
Since each heating appliance must have its own dedicated flue pipe, many homes in Mansfield and Eastern Massachusetts have multiple flues connected to a single chimney. So, if your mid-19th-century home in West Mansfield has a wood-burning fireplace, an oil furnace, and a gas-fired boiler, your chimney will contain three separate flues.
Each flue and its connector piping should be inspected and cleaned annually, much like your fireplace. Oil-burning furnaces produce sulfur and soot that can clog the flue. Also, gas appliances generate high levels of moisture that can cause masonry to deteriorate from the inside out.
Furnace and boiler flues are vulnerable to the same issues that affect the venting of your wood-burning fireplace or stove, including moisture intrusion, bird nests, and debris, all of which pose fire and health hazards. Neglecting these flues can lead to structural problems and dangerous carbon monoxide leaks. It may result in National Grid or your local utility company “red tagging” your system, cutting off your heat when you need it most.
Boiler Shutdown Service for Homeowners in Eastern MA
For residents who use steam or hot water heating systems, a boiler shutdown is a critical maintenance step. During our humid summers, the moisture in the air reacts with the soot left over from winter, creating an acidic paste that eats away at your flue’s liner. When the heating season is over, our shutdown service protects your boiler and flue before the next autumn chill arrives.
We Can Restore Your Red-Tagged Gas Service in Mansfield, MA
A red tag notice means that the gas company has discovered a serious safety issue with your gas appliance. You must take immediate action when your gas utility issues a red tag notice and disconnects your gas service. Horizon Chimney Service has an emergency red tag response team that is certified and authorized to make the necessary repairs to restore your gas service.
Some of the reasons you may receive a red tag notice include:
- Flue Obstruction: Bird nests, fallen bricks, or soot blockages preventing exhaust from escaping your home.
- Improper Venting: Improper repairs or non-compliant flue sizes.
- Liner Failure: Cracks or holes in the flue liner that allow carbon monoxide to leak into living spaces.
- Natural Gas Leaks: Detected gas leaking from your residence.
Key Benefits of Inspecting & Cleaning Your Furnace & Boiler Flues
In addition to avoiding the unpleasant surprise of a reg tag shut-off notice, proper maintenance offers many other benefits:
- Prevents Carbon Monoxide Poisoning: Ensures your flues are efficiently expelling toxic combustion byproducts from your home.
- Increases Fuel Efficiency: With a clean, unobstructed flue, your furnace or boiler will provide more heat with less fuel, reducing energy costs.

- Extends Appliance Lifespan: Proper venting reduces strain on your heating system’s internal components, helping prevent premature replacement.
- Compliance & Safety: Keeps your home in line with Massachusetts 780 CMR building codes and NFPA 211 standards, providing peace of mind for your family.
We Service Furnaces & Boilers in Mansfield, MA
Keep your heating system operating at peak performance. Whether your furnace and boiler need an annual inspection and cleaning, have been red-tagged by your utility, or need urgent venting repairs, the licensed and insured professionals of Horizon Chimney Services are at your service. Our extensive service area includes East Mansfield, Plainville, Wrentham, Sharon, and the surrounding townships in Bristol and Norfolk counties.
Don’t wait for a red tag or a heating failure. Call or fill out our short online form today to schedule a service call or speak with a certified technician.
