Which is better for a Minnesota home: Carrier, Trane or Lennox?
Carrier, Trane and Lennox build equally capable premium systems, so compare the same tier. At the top (Infinity, Premier, Signature) the furnace, outdoor unit and thermostat lock to one brand's communicating control. Each maker sets its own warranty registration window, so confirm it before install day.
Key points
- All three sell a full ladder, so compare the same tier: Infinity, Premier and Signature at the top; Performance, Priority and Elite in the middle.
- Top-tier systems run on the brand's own control: Carrier's Infinity System Control, Trane's Link controller or the Lennox S40.
- Each brand's top furnace is variable-capacity or modulating: Carrier's Infinity 98, Trane's 96 Modulating Variable Speed and Lennox's SLP99V.
- Carrier's warranty page states a 90-day registration window; for Trane and Lennox, read the registration terms on their own warranty pages before install day.
- Sizing, venting and a service company close by matter more than which of the three you choose.
Carrier, Trane and Lennox all sell complete premium lineups: modulating or variable-capacity gas furnaces, variable-speed air conditioners and heat pumps built for cold weather. Any of the three can heat and cool a Minnesota house well, so the useful comparison is tier by tier and control by control, plus who near you can service the brand you pick. If you're ready to price one, see our furnace installation and AC installation pages. The model names and ratings below are the ones each maker lists (checked September 2026).
The three lineups at a glance
| Detail | Carrier | Trane | Lennox |
|---|---|---|---|
| Tiers, top to bottom | Infinity, Performance, Comfort | Premier, Priority, Choice | Dave Lennox Signature Collection, Elite, Merit |
| Top gas furnace | Infinity 98: modulating, up to 98.5% AFUE | 96 Modulating Variable Speed: up to 97% AFUE | SLP99V: variable-capacity, up to 99% AFUE |
| Two-stage furnaces | Infinity 96 and 97, Performance 96 and 97 | 97 Two-Stage Variable Speed, 96 Two-Stage | EL297V, EL296V, ML297V |
| Variable-speed central AC | Infinity 21 | 20 and 18 TruComfort | SL25KCV, EL22KCV, EL18KCV |
| Staged AC below that | Performance 18, two-stage | 17 Multi-Speed | ML17KC2, two-stage |
| Cold-climate heat pumps | Infinity 21 Ultimate Cold Climate | 20 TruComfort Variable Speed Cold Climate, plus Low Profile Cold Climate models | SL22KLV, EL21KLV |
| Communicating control | Infinity System Control | Link system controller and smart thermostat | S40 Smart Thermostat |
| Refrigerant in new AC | R-454B, sold as Puron Advance | R-454B | R-454B |
| Warranty registration | Window stated on its warranty page | Check Trane's warranty page | Check Lennox's warranty page |
| Where contractors buy parts | HVAC distributors | Trane Supply stores | Lennox Stores |
On paper, the three are close at the top. Trane's spec sheets lean on construction details, and Carrier is the one that stresses fine furnace modulation. None of that matters as much as buying the right tier for your house.
Furnaces: close on paper, different in the details
Carrier's Infinity 98 (59MN7) is the modulating flagship, listed at up to 98.5% AFUE with a variable-speed blower and a fully insulated cabinet. Carrier pairs it with the Infinity System Control for fine modulation. Below it, the Infinity 96 and 97 and the Performance 96 and 97 are two-stage furnaces.
Trane's modulating furnace is the 96 Modulating Variable Speed, formerly the XC95m, listed at up to 97% AFUE with ComfortLink II communicating capability and an aluminized steel primary heat exchanger. For most houses, the Trane worth a close look is the 97 Two-Stage Variable Speed. It pairs a two-stage gas valve with a variable-speed blower and inducer, uses stainless steel for both the primary and secondary heat exchangers, and adds Trane's Comfort-R feature for summer humidity.
Lennox's SLP99V, from the Dave Lennox Signature Collection, is variable-capacity and listed at up to 99% AFUE, and Lennox pairs it with the S40 Smart Thermostat. The Elite EL297V and Merit ML297V are two-stage, variable-speed and listed at 97%. Our Lennox furnace comparison goes model by model.
For most Minnesota houses, a two-stage furnace with a variable-speed blower from any of the three is the practical pick. On low fire it carries most of the winter days in the teens and twenties, and high fire is held back for the coldest nights. The modulating flagships earn their price in large two-story homes, zoned systems and houses with a bedroom next to the mechanical room. Our Trane vs Carrier furnace comparison digs into those two lineups, and our guide to the best furnace brands in Minnesota ranks furnaces on their own.
Which Carrier, Trane and Lennox air conditioners are variable-speed?
The variable-speed flagships are Carrier's Infinity 21, Trane's 20 TruComfort Variable Speed and Lennox's SL25KCV. One step down, Carrier's Performance 18 and Lennox's ML17KC2 are two-stage, and Trane's middle unit is the 17 Multi-Speed. In a Minnesota summer the big SEER2 numbers pay back slowly, because the cooling season is short. What you notice every day is humidity control and noise. Our Carrier vs Trane comparison covers the cooling side of those two in more depth.
Each brand now sells cold-climate heat pumps: Carrier's Infinity 21 Ultimate Cold Climate Heat Pump, Trane's 20 TruComfort Variable Speed Cold Climate Heat Pump along with 19, 17 and 16 Multi-Speed Low Profile Cold Climate models, and Lennox's SL22KLV and EL21KLV. Every air-source heat pump puts out less heat as the temperature falls, so most Minnesota installs keep a backup, either a gas furnace for dual fuel or electric resistance heat. When you compare quotes, ask for the published heating capacity at 5°F for the exact size.
Do communicating controls lock you into one brand?
At the top, all three are communicating systems. Carrier's Infinity System Control is designed exclusively for Infinity system products, and the Infinity 21 pairs with it. Trane's 20 TruComfort connects to Trane's Link communicating system controller and smart thermostat. Lennox designs the SL25KCV to pair with the S40 as part of a fully communicating system, and says the equipment's sensors let the thermostat diagnose issues and adjust temperature, humidity and air quality.
That brings better diagnostics and finer staging, but the thermostat, and usually the furnace or air handler, should stay the same brand as the outdoor unit. If a control fails in year twelve, the replacement comes from the same maker. The basic single-stage and two-stage models of all three generally wire to a standard thermostat that matches the staging, but ask before assuming that about any model sold as digital or communicating.
Are repair parts different for Carrier, Trane and Lennox?
Most repairs over a system's life are the same on all three: igniters, flame sensors, pressure switches, inducer motors, capacitors and contactors. The expensive, brand-specific parts are communicating boards and inverter drives, and where those come from differs. Lennox sells equipment and parts to contractors through its own Lennox Stores. Trane Supply runs stores that sell Trane parts. Carrier equipment and parts reach contractors through HVAC distributors. Ask whoever quotes your system how fast they can get a board on a February weekend.
The warranty fine print differs too:
- Carrier: its warranty page says eligible equipment must be registered within 90 days of installation to activate the preferred coverage, and unregistered equipment falls back to the standard 5-year parts warranty with no labor.
- Trane: check the registration window on Trane's warranty page. Registering is what moves equipment from the base limited warranty to the longer registered one.
- Lennox: check the registration window on Lennox's warranty page. Coverage length depends on the tier, with the Signature Collection at the top.
Whoever installs it, get the registration confirmation in writing and confirm the deadline for your brand before install day. On installs we add our own 2-year labor warranty over the manufacturer's parts coverage.
When does Carrier, Trane or Lennox make the most sense?
- Carrier fits if you want one matched Infinity system with a modulating furnace, or a solid two-stage Performance furnace. Its heat pumps run from single-stage Comfort units to the variable-speed Performance 19 and the Infinity cold-climate model. More on our Carrier page.
- Trane fits if construction details matter to you. Even its 14 Single-Stage air conditioner lists a Climatuff compressor and a Spine Fin condenser coil, and its 97 two-stage furnace uses stainless steel heat exchangers. See our Trane page.
- Lennox fits if you want the S40 system and a top-tier variable-capacity furnace, and you're comfortable with Lennox-specific parts coming from Lennox Stores. See our Lennox page.
Get quotes on the same tier, the same matched indoor coil and the same backup-heat plan. A Merit quote against an Infinity quote tells you nothing about the brands. Then check the things no brand controls: a Manual J load calculation instead of the old nameplate, duct static pressure measured before anyone promises a quiet system, and a PVC vent route that stays above the snow. If Carrier and Lennox are your finalists, Carrier vs Lennox is a good next read.
What to do next
Installed prices with us follow the equipment more than the badge: $4,500–$9,500 for a furnace, $5,200–$9,800 for central AC and $7,500–$14,500 for a heat pump. Each replacement is sized with a Manual J load calculation and quoted in writing. For a matched-tier quote from each brand, call 612-429-3465, open daily 7am to 9pm. A repair visit on an ailing system carries a $79 trip charge that is waived when you approve the repair.
Common questions about heating
Which is quieter: Carrier, Trane or Lennox?
At the top of each line they're close. The variable-speed flagships are the quietest models in each lineup, but each maker publishes sound differently, so compare spec sheets for the exact size you're quoted. Condenser placement, the pad and line-set routing matter as much. For furnaces, a variable-speed blower on properly sized ducts keeps registers quiet.
Can any HVAC company repair Carrier, Trane or Lennox equipment?
Yes. Any qualified contractor can diagnose and repair all three, and most repairs, such as igniters, flame sensors, pressure switches, capacitors and motors, use parts that are routine on every brand. The brand-specific items are communicating boards and inverter drives. We service and repair Carrier, Trane and Lennox equipment.
Which furnace tier makes sense for most Minnesota homes?
A two-stage furnace with a variable-speed blower from any of the three. It runs on low fire through the many winter days in the teens and twenties and saves high fire for the coldest nights. The modulating flagships earn their price in large two-story homes, zoned systems and houses with a bedroom next to the mechanical room.
Do I have to buy the thermostat from the same brand?
On the communicating top tiers, yes. Carrier's Infinity System Control, Trane's Link controller and the Lennox S40 are built to pair with their own equipment, so a failed control is replaced from the same maker. The basic single-stage and two-stage models generally wire to a standard thermostat, but confirm before assuming that for any model sold as digital.
Sources
- warranty page carrier.com
- Trane manufacturer documentation trane.com