Should I buy Carrier, Trane or Lennox for a Minnesota home?
Any of the three is a sound buy; pick the installer first and the tier second. All three sell single-stage through modulating or variable-speed equipment. Their top tiers tie you to their own communicating controls, and warranty registration differs: 90 days for Carrier, 60 for Trane and Lennox.
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.
- Lennox lists the highest ratings of the three at the top: up to 99% AFUE on the SLP99V furnace and up to 26 SEER2 on the SL25KCV air conditioner.
- Register on time: 90 days for Carrier, 60 for Trane and Lennox.
- 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. 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, up to 21 SEER2 | 20 and 18 TruComfort, up to 24 and 18.1 SEER2 | SL25KCV, EL22KCV, EL18KCV, up to 26, 22.5 and 19.5 SEER2 |
| 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 | 90 days | 60 days | 60 days in Minnesota |
| Where contractors buy parts | HVAC distributors | Trane Supply stores | Lennox Stores |
On paper, Lennox lists the highest ratings of the three at the top. Trane's spec sheets lean on construction details, and Carrier is the one that puts a number on its furnace modulation: 1% steps. 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 says it adjusts in 1% increments when paired with the Infinity System Control. 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. It runs on low fire through the many winter days in the teens and twenties and saves high fire for the -20°F 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.
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.
Winter humidity is where good controls earn their keep here. A whole-home humidifier needs its target lowered as it gets colder, roughly 25–35% in ordinary cold and lower in deep cold, or the windows sweat and frost over.
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: register within 90 days for 10 years of parts, or 5 years of parts plus 3 of labor. Registered furnaces such as the Infinity 98 add a lifetime heat exchanger limited warranty.
- Trane: register within 60 days for the Registered Limited Warranty, typically 10 years on parts, with no labor. Unregistered equipment falls back to the Base Limited Warranty, typically five years.
- Lennox: register within 60 days in Minnesota. Merit and Elite get 10 years of parts, or 7 years of parts plus 3 of labor. The Signature Collection gets 12 years of parts, or 10 plus 3 of labor. Registered Elite and Signature condensing furnaces carry limited lifetime heat exchanger coverage.
Whoever installs it, get the registration confirmation in writing. Our installs add a 2-year labor warranty on top of 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 highest listed efficiency and the S40 system, 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. We size every replacement with a Manual J load calculation and put the price in writing. If your current system is acting up, a service call is a $79 trip charge, waived when you approve the repair. Call 612-429-3465, open 7 days, 7am–9pm.
Questions
Which is quieter: Carrier, Trane or Lennox?
At the top of each line they're close, and each maker publishes sound its own way. Carrier lists its Infinity 21 air conditioner as low as 55 decibels, Lennox lists its SL25KCV as quiet as 58 dB, and Trane gives its 20 TruComfort a 64–76 range. Where the condenser sits, the pad and the line-set routing matter as much. For furnaces, a variable-speed blower on properly sized ducts is what keeps the registers quiet.
Can any HVAC company repair Carrier, Trane or Lennox equipment?
Yes. Any licensed contractor can diagnose and repair all three. Most repairs, such as igniters, flame sensors, pressure switches, capacitors and motors, are routine on every brand. Communicating boards and inverter drives are brand-specific, so the question is how fast a contractor can get them. Lennox sells parts to contractors through its own Lennox Stores. We service and repair all three brands.
Do I have to use the same brand's thermostat?
On the top tiers, yes, if you want the full feature set. Carrier ties the Infinity 98's 1% modulation to its Infinity System Control, Trane's 20 TruComfort connects to its Link system controller and smart thermostat, and Lennox builds the SL25KCV to pair with its S40. Their basic single-stage and two-stage models generally run on a standard thermostat that matches the staging, so a favorite smart thermostat can often stay.
Which brand has the best cold-climate heat pump?
Each has a serious one: Carrier's Infinity 21 Ultimate Cold Climate Heat Pump, Trane's 20 TruComfort Variable Speed Cold Climate Heat Pump and Lennox's SL22KLV. Compare the published heating capacity at 5°F for the exact size you're quoted, not the model name. Plan backup heat either way, because every air-source heat pump loses output as a Minnesota cold snap deepens.