Top cold-climate picks: non-ducted, 3.5–4.5 tons
Qualifies when its capacity retention at 5°F (capacity at 5°F as a share of capacity at 47°F) is at least 70% and Capacity retention at 5°F, COP at 5°F, HSPF2 are all rated. Score = the equal-weight mean of its peer percentiles on Capacity retention at 5°F, COP at 5°F, HSPF2 (share of the other models in its peer group it beats, 0–100), all from one certified pairing: in each duct type a model is sold in, its qualifying pairing of that type with the best score; equal scores (one decimal) go to the higher heating capacity at 5°F. COP at 5°F alone is not used: it is measured at whatever heat output the unit delivers at 5°F, so a unit with little output there can still post a high COP. The single-rating boards remain, each labelled as ranked by that one rating. Only manufacturers with a QMID (IRS Qualified Manufacturer ID) on file are ranked.
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Top cold-climate picks: Non-ducted, 3.5–4.5 tons
497 of 569 models in this size class qualify. 69 keep less than 70% of their heat at 5°F and 2 have no 5°F heat output rating, so they cannot show it. 238 of the qualifiers are from manufacturers with a QMID on file (the ranked pool).
| # · Outdoor model | Manufacturer | Size · type | Cap. 5/47 | COP@5°F | HSPF2 | Btu/h @5°F | SEER2 | EER2 | Meets | Combos | AHRI ref. | Score | Beats on Cap. 5/47 | Beats on COP@5°F | Beats on HSPF2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1KUMXA421ALG · KUMXA421A | LG | 3.5 tons42,000 Btu/h · Non-ducted | 100% | 2.29 | 11.0 | 48,000 | 21.5 | 13.8 | CEE 25CEE 26CEE AdvXcelDOEES CC | 3 | 215402347 | 95.9 | 98% | 98% | 92% |
| 2AVW-48F3DAH2Hisense | Hisense | 4 tons48,000 Btu/h · Non-ducted | 100% | 2.40 | 10.8 | 54,000 | 22.0 | 12.0 | CEE 25CEE 26CEE AdvXcelDOE | 3 | 216618251 | 94.6 | 98% | 99% | 86% |
| 3CHV6-RS48URBMHHCooper & Hunter | Cooper&Hunter | 4 tons48,000 Btu/h · Non-ducted | 100% | 2.40 | 10.8 | 54,000 | 22.0 | 12.0 | CEE 25CEE 26CEE AdvXcelDOE | 3 | 217026556 | 94.6 | 98% | 99% | 86% |
| 4KUSXA421ALG · KUSXA421Awith ductless indoor unit KNSCB421A | LG | 3.5 tons42,000 Btu/h · Non-ducted | 91% | 2.20 | 10.8 | 43,500 | 21.5 | 13.5 | CEE 25CEE 26XcelES CC | 2 | 214837930 | 88.6 | 83% | 96% | 86% |
| 5KUMXA481ALG · KUMXA481A | LG | 4 tons48,000 Btu/h · Non-ducted | 100% | 2.34 | 10.5 | 52,500 | 20.5 | 13.1 | CEE 25CEE 26CEE AdvXcelDOEES CC | 3 | 215408636 | 88.0 | 98% | 99% | 67% |
| 6ZRUM048GSS0LG · ZRUM048GSS0 | LG | 4 tons48,000 Btu/h · Non-ducted | 100% | 2.10 | 10.3 | 54,000 | 23.3 | 13.5 | CEE 25CEE 26CEE AdvXcelDOEES CC | 3 | 214914947 | 80.2 | 98% | 82% | 61% |
| 7RAV-BP421AT2P-ULTOSHIBA CARRIER · RAV-BP421AT2P-ULwith ductless indoor unit RAV-HB421CTP-UL | Carrier | 3.5 tons42,000 Btu/h · Non-ducted | 79% | 2.20 | 11.1 | 33,200 | 20.2 | 9.9 | CEE 25CEE 26XcelES CC | 3 | 216415472 | 79.4 | 44% | 96% | 98% |
| 8MXZ-SM48NLHZ***Mitsubishi Electric · Smart MultiAlso listed as PUMY-HL48NKMU, MXZ-SM48NLHZ- | Mitsubishi Electric | 4 tons48,000 Btu/h · Non-ducted | 100% | 2.00 | 11.5 | 54,000 | 23.0 | 13.1 | CEE 25CEE 26XcelES CC | 4 | 215685467 | 78.4 | 98% | 37% | 100% |
| 9MXZ-SM42NLHZ***Mitsubishi Electric · Smart MultiAlso listed as PUMY-HL42NKMU, MXZ-SM42NLHZ- | Mitsubishi Electric | 3.5 tons42,000 Btu/h · Non-ducted | 100% | 2.00 | 11.1 | 48,000 | 21.5 | 13.4 | CEE 25CEE 26XcelES CC | 3 | 215685465 | 77.6 | 98% | 37% | 98% |
| 10AOUH42KUAH1FUJITSU · AIRSTAGE H-serieswith ductless indoor unit AUUH42KUAS | Fujitsu | 3.5 tons42,000 Btu/h · Non-ducted | 102% | 2.02 | 10.6 | 48,000 | 22.0 | 13.0 | CEE 25CEE 26XcelES CC | 2 | 217895710 | 76.7 | 100% | 58% | 73% |
Download CSV of the Non-ducted, 3.5–4.5 tons cold-climate board