Gas furnace liner
Best forCompatible Category I equipmentUses an approved aluminum or stainless system sized to the appliance and chimney configuration.
Correct sizing for dependable draft
Furnace chimney liners designed around the connected equipment
Relining and venting solutions for compatible gas furnaces, boilers and water heaters, including correctly sized single-appliance and common-vent systems.
Request an inspection ↗Understanding the service
Modern replacement equipment often sends less heat into the chimney than older appliances. An oversized masonry flue can cool exhaust, weaken draft and create condensation. Liner sizing must account for appliance category, fuel, input, connector rise, chimney height and whether more than one appliance shares the vent.
What to look for
When to consider furnace chimney liners
- A new furnace is connected to an old masonry flue
- Moisture or white residue appears around the chimney
- The connector or base shows corrosion
- The chimney is much larger than the appliance outlet
A complete written scope
- Appliance model, category and BTU input review
- Connector and chimney measurement
- Venting-table sizing
- Listed liner, fittings and termination
Our service process
- Inspect the accessible system and confirm the source of the problem
- Document measurements, materials, appliance information and site conditions
- Explain repair or replacement options in a clear written scope
- Protect the property and complete the selected work to the agreed specification
- Perform final checks and provide available completion photos
From selection to final review
A clear project path, with expectations in writing.
Inspection & documentation
We inspect accessible conditions, take measurements and document the parts of the system that shape your repair or installation options.
System options & written scope
You receive practical material and system choices, a defined scope of work and clear exclusions where hidden conditions may exist.
Contract, deposit & scheduling
Once you select your system:
- We sign a clear, written contract
- A 30% deposit is collected
- We schedule your project
Installation & progress documentation
We protect the work area, install the approved scope and document important conditions and completed details as the project moves forward.
Cleanup & final inspection
We clean the property thoroughly. Most exterior construction sites are approximately 90-99% clean the same day. For qualifying multi-day masonry and exterior projects, our next-day closeout can include:
- A final inspection
- An additional magnetic sweep
- Final drone photos when conditions and location allow
- A complete quality-control review
Exact payment milestones, closeout steps and return visits are stated in the written contract for the selected project.
Service questions
Details worth understanding.
Final specifications depend on the inspected conditions, appliance listing, selected manufacturer and applicable local requirements.
Is the liner sized from the furnace outlet alone?+
No. Height, input, connector configuration, appliance category and any shared appliance all affect sizing.
Does every high-efficiency furnace use a chimney?+
No. Many higher-efficiency appliances use a manufacturer-approved direct vent instead. The appliance installation instructions control the venting method.
Start with the right inspection
Schedule Your Chimney Inspection or Service!
Share the property location, appliance type and the problem you want evaluated. We will help identify the right next step.
Service areaNorth & Central New Jersey
Call for an estimate(862) 587-2214