Carrier Comfort 96% AFUE Furnace (100K BTU, 21"W)
100K BTU · 96% AFUE · 21" Cabinet
Dependable single-stage gas furnace at the best value
Performance ratings
How this system measures up
Annual fuel-use efficiency rating
Heating capacity rated for your home's load
Physical footprint — matches most existing installs
System details
Technical specifications
Every Treat's install
What's included
Every system we install comes with the same commitment to quality and craftsmanship — no upcharges, no surprises.
- Licensed, registered & insured organization ($2M policy)
- Custom-built, air-tight, mastic-sealed ductwork transitions
- Air-tight plenum transitions for noise reduction & indoor health
- Caulk, patch & seal all new penetrations
- Floor savers and clean drop cloths in all work areas
- Completed start-up report meeting factory & Treat's standards
- Backed by Treat's 100% Satisfaction Guarantee
Why we recommend it
Features & highlights
What makes this tier system the right choice for your home.
- Single-stage heating with reliable, proven performance for homes of all sizes
- Durable aluminized steel heat exchanger built to Carrier's long-life standards
- Simple, straightforward controls compatible with standard programmable thermostats
- Secondary heat exchanger and condensate drain line capture heat that older furnaces waste up the flue
- Backed by Carrier's 10-year parts limited warranty when registered
Compare tiers
Other options at this capacity
Not sure which tier is right for your home? Here's how this model stacks up against other Carrier options sized for the same load.
Carrier Infinity 98% AFUE Furnace (100K BTU, 21"W)
100K BTU · 98% AFUE · 21" Cabinet
Carrier Performance 97% AFUE Furnace (100K BTU, 21.5"W)
100K BTU · 97% AFUE · 21.5" Cabinet
Carrier Infinity 80% AFUE Furnace (90K BTU, 17.5"W)
90K BTU · 80% AFUE · 17.5" Cabinet
Ready for a free in-home estimate?
Our NATE-certified team will evaluate your home's heating and cooling needs, confirm rebate eligibility, and build a quote tailored to you — no obligation.