ComfortComfort series, tier 1 of 3 in the range.
Comfort 92 Gas Furnace
Condensing efficiency, sensible price.
A gas furnace is still the most capable way to heat a house on the coldest night of the year, and efficiency is the main thing separating one from another.
The AFUE figure is the share of the gas you buy that ends up as heat indoors. An 80% furnace sends a fifth of it up the flue and vents through a conventional chimney. A condensing furnace in the nineties extracts so much heat that the exhaust is cool enough to vent through PVC pipe — and produces condensate that needs a drain.
Staging matters too. A single-stage furnace blasts at full output and stops; a two-stage or modulating furnace spends most of the winter on a lower setting, which is quieter and holds a steadier temperature without the swings.
At a glance
- From 80% AFUE up to condensing models in the high nineties
- Two-stage and modulating output
- Combustion tested on every install
The range
What we install
Comfort
PerformancePerformance series, tier 2 of 3 in the range.
Performance 96 Gas Furnace
High AFUE with staged output.
Comfort 80Comfort series, tier 1 of 3 in the range.
80% AFUE Gas Furnace
Non-condensing, for suitable retrofits.
InfinityInfinity series, tier 3 of 3 in the range.
Modulating Gas Furnace
Continuously variable output.
How to choose
Efficiency and staging
Efficiency is the main thing separating one furnace from another. Staging decides how the house feels while it runs.
Where the gas you buy goes
80% AFUE furnaceVents through a conventional chimney.
80% heats the house 20% up the flue
Condensing furnace in the ninetiesExhaust cool enough for PVC pipe; produces condensate that needs a drain.
96% heats the house 4% up the flue
The AFUE figure is the share of the gas you buy that ends up as heat indoors.
Single-stage
- How it runs
- Runs at full output, then shuts off
- How it feels
- Temperature swings between cycles
Two-stage or modulating
- How it runs
- Spends most of the winter on a lower setting
- How it feels
- Quieter, with a steadier temperature
What to look for
What matters when you choose
Sized by load calculation, not by the size of the old unit
Venting planned before installation day
Condensate drainage designed in
Combustion tested on every install
Temperature rise verified against specification
Gas piping brought up to code
The equipment matters less than how it is sized and installed, and that part is our responsibility.
Family owned in Church Hill since 2001 · Factory-authorized Carrier dealer
Free estimates on new equipment
What happens after you contact us
- Step 1
Send the form or call
Tell us what the system is doing and we will call you back to schedule.
- Step 2
We measure first
We run a load calculation and look at your ductwork before we quote any equipment.
- Step 3
You get a free estimate
Estimates on new equipment are free, and financing is available.
Prefer to call?
(423) 357-1922- Office hours
- Monday to Friday, 8–5
- Outside those hours
- Emergency service is available — call the same number.
- Where we go
- Church Hill, Kingsport, Mount Carmel, Surgoinsville, Rogersville, Johnson City, Bristol, Greeneville, Morristown and across into Southwest Virginia. Full service area.
- Where we are
- 119 E Main St, Church Hill, TN 37642
Talk to us about what suits your house
Free estimates on new equipment. We measure before we quote.
(423) 357-1922