Your furnace is the one appliance your family can't go without when temperatures drop. When it's time to replace it, the choices can feel endless. Service First installs seven Carrier gas furnaces across three lines: Comfort™ (good), Performance™ (better), and Infinity® (best).
Before we dive in, two terms worth knowing:
- AFUE is how much of the gas you pay for becomes heat in your home. An 80% furnace turns 80 cents of every gas dollar into heat. A 97% furnace keeps 97 cents.
- Stages describe how the furnace runs. Single-stage furnaces run at full blast every time. Two-stage furnaces run on a gentle low setting most of the time. Modulating furnaces adjust in tiny steps to match exactly what your home needs.
Carrier Comfort™ 80 Gas Furnace (58SB0)
Best for: Homes with short, mild winters and tight budgets.
- 80% AFUE
- Single-stage heating
- Multi-speed blower motor
Why you'll like it: It's dependable, year-round comfort without stretching your budget. Note that it isn't ENERGY STAR certified, so if you run your heat hard for months each year, a 96%+ furnace will usually save more over time.
Carrier Performance™ 80 Gas Furnace (58TP0)
Best for: Milder climates where you still want better comfort.
- 80% AFUE with two-stage heating
- Variable 25-speed blower motor
- InteliSense™ technology
- Pairs with a high-efficiency A/C or heat pump
Why you'll like it: The variable-speed blower moves air gently and steadily, so rooms stay closer to the same temperature. In summer, it helps your A/C run more efficiently and remove more humidity.
Carrier Infinity® 80 Gas Furnace (58TN)
Best for: Infinity-level comfort and humidity control in a milder climate.
- 80% AFUE with two-stage gas valve technology
- Variable-speed, communicating design
- Smart fan control and Comfort Heat™ Technology
- Works with Carrier's Ideal Humidity System™
Why you'll like it: It manages both temperature and moisture, so your home feels warmer in winter, less sticky in summer, and quieter all year.
Carrier Comfort™ 96 Gas Furnace (59SC6)
Best for: Cold-climate homes that want high efficiency at a great value.
- Up to 96%+ AFUE
- ENERGY STAR® certified
- 18-speed blower motor
- Designed for quiet operation
Why you'll like it: Nearly every dollar of gas goes into heating your home instead of out the flue. Compared to an older 80% furnace, that means real savings every winter, without a premium price tag.
Carrier Performance™ 97 Gas Furnace (59TP7)
Best for: Homeowners who want premium efficiency and noticeably better comfort at a mid-tier price.
- Up to 97% AFUE, ENERGY STAR® certified
- Two-stage heating that runs on low stage up to 90% of the time
- Variable 25-speed blower motor and InteliSense™ technology
- SmartEvap™ technology can reduce summer humidity by up to 10%
Why you'll like it: Long, gentle low-stage cycles keep temperatures steady and the system quiet. In summer, it helps your A/C keep humidity in check.
Carrier Infinity® 97 Gas Furnace (59TN7)
Best for: Whole-home comfort as part of a complete Infinity system.
- Up to 97% AFUE, ENERGY STAR® certified
- Two-stage heating, low stage up to 90% of the time
- Communicating, constant-airflow ECM blower motor
- Ideal Humidity System™ can dehumidify without a call for cooling
Why you'll like it: Managed by the intelligent Infinity® control, it coordinates airflow and humidity automatically, for a quieter, more efficient home that feels right in every season.
Carrier Infinity® 98 Gas Furnace (59MN7)
Best for: Homeowners who want the absolute best.
- Up to 98.5% AFUE, Carrier's most efficient furnace
- Modulating gas valve adjusts output in 1% increments
- Greenspeed® Intelligence
- Variable-speed blower improves A/C efficiency and summer dehumidification
Why you'll like it: Instead of switching between high and low, it delivers exactly the heat your home needs. You get the tightest temperature control, near-silent operation, and the lowest possible gas bills.
Quick Comparison
- Comfort 80 (58SB0): 80% AFUE, single-stage. Best for mild winters and tight budgets.
- Performance 80 (58TP0): 80% AFUE, two-stage. Best for mild winters with better comfort.
- Infinity 80 (58TN): 80% AFUE, two-stage, communicating. Best for mild winters with humidity control.
- Comfort 96 (59SC6): Up to 96%+ AFUE, single-stage. Best value for cold winters.
- Performance 97 (59TP7): Up to 97% AFUE, two-stage. Best for cold winters, comfort, and savings.
- Infinity 97 (59TN7): Up to 97% AFUE, two-stage, communicating. Best for a whole-home comfort system.
- Infinity 98 (59MN7): Up to 98.5% AFUE, modulating. The best of everything.
Ready for a New Carrier Furnace?
Service First will come to your home, measure what it actually needs, and walk you through your options with no pressure.
Call (614) 795-3098 or schedule your free in-home estimate today.