Brand guide · United States · checked October 19, 2026
Armstrong Air, AirEase, Ducane and Concord heat pumps
Armstrong Air, AirEase, Ducane and Concord is part of the Lennox International family. ENERGY STAR lists 80 Armstrong Air, AirEase, Ducane and Concord outdoor models certified for the US, 21 of them cold-climate, and its best certified pairing heats at a COP of 2.46 at 5°F.
Armstrong Air, AirEase, Ducane and Concord at a glance
- Who owns it
- Allied Air Enterprises LLC, 'a Lennox International Inc. Company'. No ownership change in 2024-2026.
- Sister brands
- Lennox, Allied Commercial, MagicPak
- Headquarters
- West Columbia, South Carolina, USA (Allied Air Enterprises); parent Lennox International is in the Dallas area, Texas, USA
- How it's sold
- Contractor-installed
- Price tier
- Budget to premium. No price-positioning statement from Allied Air was found. The lineup runs from 14.3+ SEER2 single-stage units to the 21 SEER2 variable-capacity Pro Series. Not verified against installed prices.
- What it makes
- ducted central
- Names on ENERGY STAR's list
- AirEase, Allied, Allied Air (XAAE), Allied Commercial, Armstrong Air, Concord, Ducane (certified by Allied Air Enterprises; GE Appliances, a Haier Company; Lennox Industries)
Product lines
The current residential heat pump lines we found on Armstrong Air, AirEase, Ducane and Concord's own pages, with the low-temperature claim in the maker's words. 1 of 8 are sold as cold-climate.
| Line | Type | Cold-climate | Maker's low-temperature claim | Refrigerant |
|---|---|---|---|---|
| Armstrong Air / AirEase Pro Series A7CP21V variable-capacity heat pump | ducted central | Yes | 'High Performance Heating Down To 5ºF' (Armstrong Air); 'high performance heating down to 5º Fahrenheit before auxiliary heat turns on' (Allied Air, Dec 2024) | R-454B |
| Armstrong Air / AirEase Pro Series A7HP19V variable-speed heat pump | ducted central | No | No low-temperature figure published | R-454B |
| Armstrong Air / AirEase A7SCP18V compact heat pump ('All Climate Technology') | ducted central | No | No low-temperature figure published | R-454B |
| Armstrong Air / AirEase A7HP14F single-stage heat pump | ducted central | No | No low-temperature figure published | R-454B |
| Ducane / Concord 7HP19V variable-speed heat pump | ducted central | No | No low-temperature figure published | R-454B |
| Ducane / Concord 7SCP18V compact heat pump ('All Climate Technology') | ducted central | No | No low-temperature figure published | R-454B |
| Ducane / Concord 7SHP15V variable-capacity heat pump | ducted central | No | Heating operation down to 0°F (Ducane and Concord listings) | R-454B |
| Ducane / Concord 7HP14F single-stage heat pump | ducted central | No | No low-temperature figure published | R-454B |
Certified models with the best cold-weather numbers
From ENERGY STAR's list for the US (updated October 19, 2026): each row is one outdoor unit with its best certified pairing. 39 of 80 Armstrong Air, AirEase, Ducane and Concord outdoor models use R-454B or R-32; the tables show those.
Mini-splits and multi-splits (13 models)
No mini-splits and multi-splits on R-454B or R-32 are listed for Armstrong Air, AirEase, Ducane and Concord, so these use R-410A.
| Outdoor / indoor model | Size | Heat at 5°F | COP at 5°F | HSPF2 | SEER2 | Refrigerant | AHRI # |
|---|---|---|---|---|---|---|---|
| 4DHP2S18S-1P DMD218S4-*P 4DH SERIES | 20,000 BTU/h 1.5-ton | 13,000 BTU/h 65% of rated | 2.40 | 10.5 | 20.0 | R-410A | 211034529 |
| 4DHP2S12S-1P DWM212S4-*P 4DH SERIES | 12,000 BTU/h 1-ton | 8,000 BTU/h 67% of rated | 2.39 | 10.7 | 24.6 | R-410A | 211034521 |
| 4DHP2S24S-1P DMD224S4-*P 4DH SERIES | 25,000 BTU/h 2-ton | 20,000 BTU/h 80% of rated | 2.30 | 11.0 | 19.0 | R-410A ENERGY STAR Cold Climate | 211034530 |
| 4DHPS209S-1P DWM209S4-1P 4DH SERIES | 10,000 BTU/h 1-ton | 7,500 BTU/h 75% of rated | 2.17 | 12.3 | 25.5 | R-410A ENERGY STAR Cold Climate | 208106747 |
| 4DHV2S09S-1L DWH209S4-*L 4DH SERIES | 10,000 BTU/h 1-ton | 7,000 BTU/h 70% of rated | 2.16 | 9.1 | 21.5 | R-410A ENERGY STAR Cold Climate | 211034539 |
| 4DHP2S12S-1L DWM212S4-*L 4DH SERIES | 12,000 BTU/h 1-ton | 6,800 BTU/h 57% of rated | 2.16 | 10.0 | 23.5 | R-410A | 211034545 |
Central (ducted) split systems (67 models)
| Outdoor / indoor model | Size | Heat at 5°F | COP at 5°F | HSPF2 | SEER2 | Refrigerant | AHRI # |
|---|---|---|---|---|---|---|---|
| A7CP21V36P-**A 7EH30BX-**+TDR A7CP21V Series | 30,600 BTU/h 3-ton | 22,400 BTU/h 73% of rated | 2.46 | 9.0 | 19.0 | R-454B ENERGY STAR Cold Climate | 217446281 |
| A7CP21V24P-**A 7AH2AE24PX-** A7CP21V Series | 24,000 BTU/h 2-ton | 18,600 BTU/h 78% of rated | 2.30 | 9.8 | 20.5 | R-454B ENERGY STAR Cold Climate | 217122118 |
| A7CP21V48P-**A 7AH1AE60PX-** A7CP21V Series | 44,000 BTU/h 4-ton | 34,800 BTU/h 79% of rated | 2.20 | 9.0 | 19.5 | R-454B ENERGY STAR Cold Climate | 217122206 |
| A7HP19V36P-**A 7AH2AV36PXC** A7HP19V SERIES | 34,200 BTU/h 3-ton | 17,700 BTU/h 52% of rated | 2.20 | 8.4 | 18.0 | R-454B | 217196951 |
| A7HP14F24P-**A 7AH2AV30PXC** A7HP14 Series | 22,200 BTU/h 2-ton | 11,400 BTU/h 51% of rated | 2.20 | 8.2 | 15.5 | R-454B | 215711079 |
| A7HP14F48P-**A 7AH2AE48PX-** A7HP14F Series | 48,000 BTU/h 4-ton | 24,600 BTU/h 51% of rated | 2.20 | 8.2 | 15.2 | R-454B | 215747092 |
Most efficient for cooling
| Outdoor / indoor model | Size | SEER2 | EER2 | HSPF2 | COP at 5°F | Refrigerant | AHRI # |
|---|---|---|---|---|---|---|---|
| A7CP21V24P-**A 7EH24BX-**+TDR A7CP21V Series | 24,000 BTU/h 2-ton | 21.0 | 13.5 | 8.2 | 1.90 | R-454B ENERGY STAR Cold Climate | 218788059 |
| A7CP21V48P-**A 7EH60DX-**+TDR A7CP21V Series | 45,500 BTU/h 4-ton | 20.5 | 12.6 | 8.5 | 1.96 | R-454B | 217120465 |
| A7CP21V60P-**A 7E[C,U]60CX-**+TDR A7CP21V Series | 53,000 BTU/h 4.5-ton | 20.5 | 12.0 | 8.5 | 2.16 | R-454B | 217120448 |
| 7HP19V36P-**A 7E[C,U]24BX-**+TDR 7HP19V SERIES | 24,000 BTU/h 2-ton | 20.0 | 13.2 | 8.5 | 2.02 | R-454B | 217512789 |
Look up any pairing by its AHRI number in the AHRI Directory ↗ or search the model in ENERGY STAR's product finder ↗. Ratings are for the exact indoor and outdoor pairing shown.
Warranty
Registration: Basic 5-year parts and 5-year compressor if not registered within 60 days of installation. Registration isn't required in California, Florida, Georgia or Quebec.
Same certificate ('applies in U.S.A. and Canada only'): basic 5 years if not registered within 60 days; registration isn't required in Quebec
Strengths and watch-outs
Strengths
- The Pro Series A7CP21V delivers 'high performance heating down to 5°F before auxiliary heat turns on' (Allied Air, Dec 2024)
- The warranty explicitly applies in the US and Canada; 10-year parts and compressor with registration (Allied Air certificate)
- The same equipment under several badges (Armstrong Air = AirEase, Ducane = Concord) widens dealer choice
- Extended options, including full unit replacement, are available through ComforTeam/ProTeam dealers (Armstrong Air A7CP21V page)
Watch-outs
- 60-day registration deadline; basic cover is 5 years
- No published sub-zero rating: the A7CP21V claim stops at 5°F with no capacity percentage, and the 7SHP15V only claims operation 'down to 0°F'
- No labour cover in the factory warranty
- Product pages say only 'Low GWP' and list no ductless or mini-split models; the Ducane and Concord sites show no Canadian content
Which rebates Armstrong Air, AirEase, Ducane and Concord models fit
Every model in these tables is ENERGY STAR certified, which is the federal equipment rule for the Home Electrification and Appliance Rebates where your state runs them. 21 Armstrong Air, AirEase, Ducane and Concord outdoor models also meet ENERGY STAR Cold Climate, which several utility programs require. The 25C tax credit ended for heat pumps placed in service after December 31, 2025.
Rebate rules by metro:
Recent news
- Allied Air completed its Pro Series connected system with the MyHomeComfort CA4 communicating thermostat and app alliedair.com ↗
- Allied Air summarized EPA's revised AIM Act rule: qualifying pre-2025 R-410A split systems can be installed after July 27, 2026 alliedair.com ↗
- Sister brand MagicPak launched the M-Series MGE9 with FreezeShield, a cold-climate all-in-one unit for the US and Canada alliedair.com ↗
- Armstrong Air and AirEase Pro Series redesigned for R-454B; the A7CP21V heats 'down to 5º Fahrenheit before auxiliary heat' alliedair.com ↗
- Allied Air launched R-454B refrigerant across its residential HVAC products alliedair.com ↗
Get quotes for Armstrong Air, AirEase, Ducane and Concord or a comparable heat pump
Tell us about your home and what you want to heat. A person reads every request and replies with the contractors and rebate programs that serve your ZIP code.
Sources
Model counts and ratings: ENERGY STAR Certified Heat Pumps, updated October 19, 2026. Brand facts checked October 19, 2026 on:
- Allied Air Enterprises (brands, HQ)
- Armstrong Air heat pumps
- Armstrong Air A7CP21V
- AirEase heat pumps
- Ducane heat pumps
- Concord heat pumps
- Armstrong Air warranty
- Allied Air residential limited warranty (form 508792-02, ©2026)
- Allied Air news list
- Allied Air: R-454B launch (Jun 3, 2024)
- Allied Air: Pro Series redesign for R-454B (Dec 10, 2024)
- Allied Air: EPA revised AIM Act rule and R-410A (Jun 16, 2026)