Lennox vs Carrier heat pumps: both brands top out at about the same efficiency, with Carrier’s Infinity 23 rated up to 23 SEER2 and 10.5 HSPF2 and Lennox’s SL25XPV up to 23 SEER2 and 10.3 HSPF2. Prices are also close: HomeGuide lists heat pump units at $2,200 to $5,700 for Lennox and $2,100 to $4,900 for Carrier before installation. As a result, the deciding factors are usually warranty structure, cold-climate options and the dealer.
Below, we compare top models, as well as prices, cold-weather performance, sound and warranties for Lennox and Carrier heat pumps. Specs and terms checked on November 4, 2026.
Lennox vs Carrier heat pumps at a glance
| Lennox | Carrier | |
|---|---|---|
| Heat pump unit price (HomeGuide) | $2,200–$5,700 | $2,100–$4,900 |
| Top model | SL25XPV: up to 23 SEER2, 10.3 HSPF2 | Infinity 23: up to 23 SEER2, 10.5 HSPF2 |
| Cold-climate model | SL22KLV: up to 21.10 SEER2, 10.5 HSPF2 | Infinity 23 heats down to −13°F, Carrier says |
| Quietest listed | EL18KSLV: 54 dB | Infinity 23: as low as 53 dB |
| Registered warranty | Up to 12 years on Signature models (60 days) | 10 years parts, or 5 years parts plus 3 years labor (90 days) |
Lennox vs Carrier heat pump lineups
- Top tier: Lennox’s Dave Lennox Signature Collection includes the SL25XPV and the SL22KLV, while Carrier’s top model is the Infinity 23 (27VNA3).
- Mid tier: Lennox sells the Elite EL21KLV, EL19KPV and EL18KSLV; Carrier, by comparison, offers the Performance 19 (27VPA9).
- Entry tier: finally, Lennox’s Merit Series includes the ML16KP2, ML15KSPV and ML14KP1, and Carrier sells the Comfort 16 (27SCA5).
To begin with, Lennox lists more cold-climate models, including the SL22KLV in its top tier and the EL21KLV in its Elite series. Carrier, on the other hand, says its Infinity 23 provides heating down to −13°F and runs from 30% to 100% of capacity. For more on low-temperature performance, see our guide to cold climate heat pumps.
Heat pump prices compared
At the equipment level, HomeGuide’s ranges overlap: Lennox heat pumps run $2,200 to $5,700 and Carrier $2,100 to $4,900 before installation. Meanwhile, Carrier estimates that a new heat pump costs $6,000 to $25,000 installed in 2026, depending on size, efficiency and installation. Lennox, by contrast, uses a price guide from $ to $$, with its Signature models at the top. For installed prices by home size, see our heat pump cost guide.
Warranty: Lennox vs Carrier
- Lennox: basic coverage varies by tier, from 5 years on components for Merit models to 10 years on Dave Lennox Signature models. Registering within 60 days extends coverage, up to 12 years on Signature models, or you can choose shorter parts coverage plus 3 years of labor.
- Carrier: 5 years of parts coverage without registration. However, if you register within 90 days, you can choose 10 years of parts coverage or, with participating dealers, 5 years of parts plus 3 years of labor.
In other words, both brands let you trade some parts coverage for labor coverage, whereas Lennox’s top tier offers the longest parts term. Carrier, on the other hand, gives you more time to register.
Which heat pump should you choose?
- Choose Lennox if you want a wide choice of cold-climate models or the longest registered warranty on a top-tier system.
- Choose Carrier instead if you prefer a 90-day registration window, an Infinity system with very low sound levels or a local Carrier dealer you trust.
- For both, ask for a Manual J load calculation and compare the exact model numbers, SEER2 and HSPF2 in each quote.
For other brand comparisons, read Trane vs Carrier and our guide to the best HVAC brands.
Related guides: See also our guide on Rheem vs Ruud.
Lennox vs Carrier FAQ
Which is more efficient, Lennox or Carrier?
Their top heat pumps are close, since both reach up to 23 SEER2, while Carrier’s Infinity 23 is rated up to 10.5 HSPF2 and Lennox’s SL25XPV up to 10.3 HSPF2. Moreover, Lennox’s SL22KLV cold-climate model also reaches 10.5 HSPF2.
Is Lennox more expensive than Carrier?
Slightly, at least at the top of HomeGuide’s ranges: up to $5,700 for a Lennox heat pump unit versus $4,900 for Carrier. Still, installation usually matters more to the final price.
Do Lennox and Carrier heat pumps work in cold climates?
Yes. For example, Lennox sells dedicated cold-climate models, and Carrier says its Infinity 23 heats down to −13°F.
Sources and review
Sources: HomeGuide, new HVAC system cost (prices by brand) (August 27, 2025); Lennox, heat pumps; Lennox, SL25XPV heat pump; Lennox, product warranty; Carrier, how much does a heat pump cost? (September 15, 2026); Carrier, Infinity 23 heat pump; Carrier, home HVAC warranty registration and coverage. All checked on November 4, 2026.
Written by: HVAC Switch. Last updated: November 4, 2026. Read our editorial policy to learn how we research prices, or contact us if you spot an error.