Stainless Steel Liners
A continuous stainless liner sized to the appliance and insulated where the run is cold.
Call For Fast Service (203) 813-4810Furnace & Boiler Chimney Liner Installation
A heating appliance needs a flue that is sized and configured for the equipment it serves. ABC Chimney Solutions evaluates furnace and boiler liners using the appliance BTU rating, outlet size, fuel, chimney height and venting requirements rather than choosing a liner by appearance alone.
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Call For Fast Service (203) 813-4810
Systems · Liners & Venting
Furnace & Boiler Liners in Connecticut
A heating appliance needs a flue that is sized and configured for the equipment it serves. ABC Chimney Solutions evaluates furnace and boiler liners using the appliance BTU rating, outlet size, fuel, chimney height and venting requirements rather than choosing a liner by appearance alone.
Why sizing matters
A liner that is too large or too small can contribute to poor draft or condensation problems. ABC Chimney Solutions checks the relationship between the appliance and the flue, especially when a heating system has been replaced or converted from one fuel to another.
Condensation clues
Rust, staining, moisture, deteriorated mortar or clay, odors or liquid at the lower vent connection can all be clues that a venting system is not operating under ideal conditions. If the existing liner is the wrong size or type for the appliance, ABC Chimney Solutions normally recommends replacing it with a correctly designed system.
- Stainless & cast-in-place
- Sized to the appliance
- Class A and B-Vent
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Liner Installation -
Liner Installation -
Class A Pipe Install -
Class A Pipe Install
Systems Inclusions
Also part of Liners & Venting
A chimney liner is part of the venting system, not just a metal tube dropped inside the chimney. The correct liner depends on the appliance, fuel, BTU input, vent connection, chimney height, existing flue and applicable manufacturer and code requirements. ABC Chimney Solutions evaluates those factors before recommending a liner type or size.
Cast-In-Place Liners
A poured liner that seals the flue and adds strength to the surrounding masonry.
Call For Fast Service (203) 813-4810Clay Tile Relining
Cracked tiles replaced section by section where the original build allows.
Call For Fast Service (203) 813-4810
Class A Chimney Pipe
Insulated twin-wall pipe for a home with no masonry chimney, run through the structure.
Call For Fast Service (203) 813-4810B-Vent & Gas Venting
Double-wall B-Vent for gas furnaces, boilers and water heaters, sized and pitched correctly.
Call For Fast Service (203) 813-4810Also worth reading alongside Furnace & Boiler Liners: Chimney Inspection and Flue Cleaning .
Questions & Answers
Furnace & Boiler Liners — frequently asked
What homeowners ask ABC Chimney Solutions most often about furnace & boiler liners.
How do you size a furnace or boiler chimney liner?
ABC Chimney Solutions uses the appliance BTU rating and venting requirements together with outlet size, chimney height, fuel type, existing flue and applicable manufacturer or code information to select the liner. Learn more about this service.
Can changing from oil to gas affect the chimney liner?
Yes. ABC Chimney Solutions recommends re-evaluating the venting whenever the heating appliance or fuel changes because the old flue may not be properly sized or configured for the new equipment. Learn more about this service.
Can an oversized flue cause condensation?
It can contribute to unfavorable venting conditions. ABC Chimney Solutions evaluates sizing, appliance type and chimney conditions when moisture or condensation is appearing in a heating flue. Learn more about this service.
Why sizing matters?
A liner that is too large or too small can contribute to poor draft or condensation problems. ABC Chimney Solutions checks the relationship between the appliance and the flue, especially when a heating system has been replaced or converted from one fuel to another. Learn more about this service.
What does ABC Chimney Solutions mean by condensation clues?
Rust, staining, moisture, deteriorated mortar or clay, odors or liquid at the lower vent connection can all be clues that a venting system is not operating under ideal conditions. If the existing liner is the wrong size or type for the appliance, ABC Chimney Solutions normally recommends replacing it with a correctly designed system. Learn more about this service.
Why does a furnace or boiler need a liner?
Because heating appliances vent at lower temperatures than an open fire, condensation forms readily, and an oversized or unlined masonry flue lets that condensate attack the chimney from the inside. ABC Chimney Solutions covers this as part of its furnace & boiler liners work in Connecticut. Learn more about this service.
What happens when a heating system is replaced?
The venting requirement usually changes with it. A new appliance on the flue that suited the old one is one of the most common problems ABC Chimney Solutions is called to. Learn more about this service.
What is an orphaned water heater?
It is a water heater left venting alone into a flue that used to carry a larger appliance as well. The flue is then far too big for it, and it struggles to establish draft. This is part of what ABC Chimney Solutions checks before quoting furnace & boiler liners. Learn more about this service.
Can a furnace share a flue with a fireplace?
They should each have a correctly sized route. Where a heating appliance has been left venting into a flue intended for something else, that is the first thing to look at. ABC Chimney Solutions covers this as part of its furnace & boiler liners work in Connecticut. Learn more about this service.
Is the liner material different for a heating appliance?
It can be. The alloy is chosen for the fuel and what its combustion products do to metal, so an oil appliance and a gas appliance are not automatically the same specification. Ask ABC Chimney Solutions about it when you book furnace & boiler liners. Learn more about this service.
Does the appliance get checked afterwards?
The appliance and its draft are checked in operation before the work is treated as finished. ABC Chimney Solutions works to this on every furnace & boiler liners job it takes on. Learn more about this service.
What does a chimney liner do?
It gives the products of combustion a contained, correctly sized route out of the building, and keeps heat and acidic condensate away from the surrounding masonry. A chimney without a sound liner is passing both into the structure. Ask ABC Chimney Solutions about it when you book furnace & boiler liners. Learn more about this service.
How do I know if my liner needs replacing?
Cracked or missing clay tiles, corroded metal, tile fragments turning up in the firebox, a liner that was installed for a different appliance, or a heating change that altered the venting requirement are the usual reasons ABC Chimney Solutions recommends relining. Learn more about this service.
What size liner do I need?
It is determined, not chosen. The appliance rating and outlet, the fuel, the chimney height, the existing flue and the manufacturer's requirements decide it. ABC Chimney Solutions works it out for the specific installation rather than fitting the size that is common. Learn more about this service.
Which liner type is best?
There is no single answer. Stainless steel suits most situations; cast-in-place is considered where a homeowner specifically wants that method or where a conventional liner cannot realistically be passed through the existing flue; clay tile relining has its own applications. ABC Chimney Solutions covers this as part of its furnace & boiler liners work in Connecticut. Learn more about this service.
How It Works
Four steps from first call to certificate
No surprises and no doorstep pricing — you know what happens at every stage before we start.
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Book Your Visit
Call or send the form. We confirm a slot the same working day, with a real arrival window — not a vague morning or afternoon.
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Full Inspection
Every job opens with a survey down the full length of the flue, so what we quote for is what we have actually seen.
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Fixed Written Quote
A price in writing before any work begins. No day-rate creep, no parts found halfway through, no doorstep upsells.
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Done & Explained
The hearth is left cleaner than we found it, and you are told exactly what was done and what to watch.
What Homeowners Say
Reviews from the towns we work in
Eight of the several thousand chimneys we have swept, lined and rebuilt across Connecticut.
The inspection found a cracked clay liner two other companies had missed. Relined in stainless the following week and the smoke coming back into the room stopped dead.
Open fire had not been swept in six years. They pulled out a shocking amount of creosote, sheeted the whole hearth, and left the room spotless.
Damp was coming through the chimney breast for two winters. They traced it to a failed crown, recast it and waterproofed the brickwork — bone dry since.
Flashing had lifted and the damper had seized shut. Both repaired in one visit, and they showed me the before and after photos on the roof.
The inspection found a cracked clay liner two other companies had missed. Relined in stainless the following week and the smoke coming back into the room stopped dead.
Open fire had not been swept in six years. They pulled out a shocking amount of creosote, sheeted the whole hearth, and left the room spotless.
Damp was coming through the chimney breast for two winters. They traced it to a failed crown, recast it and waterproofed the brickwork — bone dry since.
Flashing had lifted and the damper had seized shut. Both repaired in one visit, and they showed me the before and after photos on the roof.
Full stack rebuild above the roofline on a 1920s house. They matched the original brick and mortar so closely the neighbors asked who did our repointing.
Booked the sweep on Monday, done Tuesday. The photographs and written flue report are more thorough than the survey we paid for when we bought the place.
Our wood stove never drew properly. They worked out the flue was oversized for the appliance, fitted an insulated liner, and it lights first time now.
Needed the chimney looked at fast for a house sale. On the roof the next morning, and I had a clear answer and a price the same afternoon.
Full stack rebuild above the roofline on a 1920s house. They matched the original brick and mortar so closely the neighbors asked who did our repointing.
Booked the sweep on Monday, done Tuesday. The photographs and written flue report are more thorough than the survey we paid for when we bought the place.
Our wood stove never drew properly. They worked out the flue was oversized for the appliance, fitted an insulated liner, and it lights first time now.
Needed the chimney looked at fast for a house sale. On the roof the next morning, and I had a clear answer and a price the same afternoon.
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