Regional Standards Product Reference Guide
Brand: Lennox
Effective January 1, 2023, new minimum efficiency standards for split-system air conditioners and heat pumps are in effect, along with a revised testing procedure known as the "M1 Standard." These changes impact product lines based on type and geographic region. Mini-splits, package units, and indoor equipment are not included as no changes were made to these product lines due to the 2023 regional standards.
Air Conditioners
North & Canada
| 2022 Product Line Up | 2023 Regional Standard Compliant Products¹ |
|---|---|
| XC21 (up to 21.0 SEER) | EL23XCV (up to 22.0 SEER2)² |
| SL28XCV (up to 28.0 SEER) | SL28XCV (up to 26.6 SEER2)² |
| XC13N (up to 16.0 SEER) | EL16XC1 (up to 16.2 SEER2) |
| EL16XC1 (up to 17.0 SEER) | EL17XC1 (up to 16.2 SEER2) |
| EL18XCV (up to 18.0 SEER) | EL18XCV (up to 17.1 SEER2)² |
| XC20 (up to 22.0 SEER) | EL23XCV (up to 22.0 SEER2)² |
| 13ACXN (meets or exceeds 13.0 SEER) | ML14XC1 (meets or exceeds 13.4 SEER2) |
| ML14XC1 (up to 17.0 SEER) | ML17XC1 (meets or exceeds 13.4 SEER2) |
| 16ACX (up to 18.0 SEER) | ML18XC2 (up to 17.1 SEER2) |
Note: Air conditioners manufactured in 2022 that are not compliant with 2023 Regional Standards may be installed in the North and Canadian regions in 2023.
South & Southwest
| 2022 Product Line Up | 2023 Regional Standard Compliant Products¹ |
|---|---|
| XC21 (up to 21.0 SEER) | EL23XCV (up to 22.0 SEER2)² |
| SL28XCV (up to 28.0 SEER) | SL28XCV (up to 26.6 SEER2)² |
| EL16XC1 (up to 17.9 SEER) | EL17XC1 (up to 16.2 SEER2) |
| EL18XCV (up to 18.0 SEER) | EL18XCV (up to 17.1 SEER2)² |
| XC20 (up to 22.0 SEER) | EL23XCV (up to 22.0 SEER2)² |
| ML14XC1 (meets or exceeds 17.0 SEER) | ML17XC1 (meets or exceeds 16.2 SEER2) |
| 16ACX (up to 18.0 SEER) | ML18XC2 (up to 17.1 SEER2) |
In the South/Southwest regions, all air conditioners installed in 2023 must meet 2023 regional standards.
Heat Pumps - All Regions
| 2022 Product Line Up | 2023 Regional Standard Compliant Products¹ |
|---|---|
| XP21 (up to 19.2 SEER) | EL22XPV (up to 21.0 SEER2)² |
| SL25XPV (up to 24.0 SEER) | SL25XPV (up to 22.8 SEER2)² |
| EL16XP1 (up to 17.0 SEER) | EL17XP1 (up to 16.2 SEER2) |
| EL18XPV (up to 20.0 SEER) | EL18XPV (up to 17.1 SEER2)² |
| XP20 (up to 20.0 SEER) | EL22XPV (up to 21.0 SEER2)² |
| ML14XP1 (meets or exceeds 14.0 SEER) | ML17XP1 (meets or exceeds 16.2 SEER2) |
| ML16XP1 (up to 17.0 SEER) | ML17XP1 (meets or exceeds 16.2 SEER2) |
| 16HPX (up to 16.5 SEER) | EL18XPV (up to 17.1 SEER2)² |
Heat Pumps manufactured in 2022 that are not compliant with 2023 Regional Standards may be installed in all regions in 2023.
Testing to a Higher Standard
To comply with new, more stringent testing protocols for reporting efficiency ratings, Manufacturers are required to:
- Re-test equipment to the new efficiency rating test requirements known as the "M1 Standard."
- Publish equipment efficiency ratings using the new efficiency metrics of SEER2, EER2, and HSPF2.
The new test procedure increases external static pressure from 0.1-0.3 ESP to 0.5 ESP to better reflect field conditions. For heat pumps, a more representative heating load line is also implemented. These new requirements result in new metrics and nomenclature: SEER2, EER2, and HSPF2.
Efficiency Comparison
| Metric | SEER | SEER2 | EER | EER2 | HSPF | HSPF2 |
|---|---|---|---|---|---|---|
| 16.0 | 15.2 | 13.0 | 12.5 | 10.0 | 8.5 | |
| 15.0 | 14.3 | 12.5 | 12.0 | 9.5 | 8.1 | |
| 14.0 | 13.4 | 12.2 | 11.7 | 9.0 | 7.7 | |
| 13.0 | 12.4 | 11.7 | 11.2 | 8.8 | 7.5 |
Product Line Up Details
The following outlines the product lines compliant with the 2023 regional standards, categorized by stage and minimum efficiency requirements.
Key
- ❄️ Air Conditioner
- ? Heat Pump
- ? Smart Communicating
- ? Cold Climate HP
Product Line Up by Stage
| Stage | Models | Type | Features |
|---|---|---|---|
| Single Stage | EL16XC1, EL17XC1, EL17XP1, ML14XC1, ML17XC1, ML17XP1 | Air Conditioner / Heat Pump | [ENERGY STAR certified] |
| Two Stage | ML18XC2 | Air Conditioner | [ENERGY STAR certified] |
| Variable Capacity | SL28XCV, SL25XPV, EL18XCV, EL23XCV, EL18XPV, EL22XPV | Air Conditioner / Heat Pump | [ENERGY STAR certified], Smart Communicating, Cold Climate HP |
Minimum Efficiency
North & Canada
| Product Class | SEER2 | HSPF2 |
|---|---|---|
| Air Conditioners (≤ 3.5 ton) | 13.4 | -- |
| Air Conditioners (≥ 4 ton) | 13.4 | -- |
| Heat Pumps | 14.3 | 7.5 |
| Implementation Date | Manufacture by 12/31/22 | |
Southwest
| Product Class | SEER2 | EER2 | HSPF2 |
|---|---|---|---|
| Air Conditioners (≤ 3.5 ton) | 14.3 | 11.7* | -- |
| Air Conditioners (≥ 4 ton) | 13.8 | 11.2* | -- |
| Heat Pumps | 14.3 | -- | 7.5 |
| Implementation Date | Install by 1/1/23 | ||
*9.8 EER2 if SEER2 ≥ 15.2
South
| Product Class | SEER2 | HSPF2 |
|---|---|---|
| Air Conditioners (≤ 3.5 ton) | 14.3 | -- |
| Air Conditioners (≥ 4 ton) | 13.8 | -- |
| Heat Pumps | 14.3 | 7.5 |
| Implementation Date | Install by 1/1/23 | |
