Pioneer YN048GMSI20RUG: certified ratings
Cooling 48,000 BTU/h · SEER2 up to 19.8 · HSPF2 up to 10.2 · up to 81% of 47°F heating capacity at 5°F · Cold climate: Yes
ENERGY STAR lists 3 certified indoor pairings for this outdoor unit. Series: YN Series. Refrigerant: R-454B. Compressor: continuously variable (inverter), per ENERGY STAR.
All certified pairings (highest HSPF2 first)
| Indoor unit | Series | Cooling BTU/h | SEER2 | EER2 | HSPF2 | Heat 47°F | Heat 17°F | Heat 5°F | % of 47°F cap. at 5°F | COP 5°F | Cold climate | Refrigerant | AHRI ref. | ENERGY STAR record |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UB048GMSILDFHG | YN Series | 48,000 | 19.8 | 9.5 | 10.2 | 50,000 | 39,500 | 38,500 | 77% | 1.95 | Yes | R-454B (GWP:470 | Lower GWP) | 218010996 | 4520523 |
| CB048GMSILDFHG | YN Series | 48,000 | 19 | 9.5 | 9.9 | 50,000 | 36,600 | 40,500 | 81% | 2.11 | Yes | R-454B (GWP:470 | Lower GWP) | 218010992 | 4520521 |
| RB048GMSILDFHG | YN Series | 48,000 | 17.1 | 10 | 9.8 | 50,000 | 39,000 | 38,000 | 76% | 2 | Yes | R-454B (GWP:470 | Lower GWP) | 218010994 | 4520522 |
"% of 47°F capacity at 5°F" = heating capacity at 5°F ÷ heating capacity at 47°F, both from the ENERGY STAR record (ENERGY STAR's cold-climate designation requires ≥70% and COP ≥1.75 at 5°F; criteria).
Rough running-cost yardstick (top-rated pairing)
| kWh per 1,000 full-load hours | Cost at U.S. avg rate | |
|---|---|---|
| Cooling (48,000 BTU/h ÷ SEER2 19.8) | 2,424 | $444 |
| Heating (50,000 BTU/h ÷ HSPF2 10.2) | 4,902 | $898 |
Cost estimates: cooling kWh ≈ cooling capacity × full-load hours ÷ SEER2 ÷ 1,000; heating kWh ≈ 47°F heating capacity × full-load hours ÷ HSPF2 ÷ 1,000. "Per 1,000 full-load hours" is a yardstick for comparing systems, not a prediction of your bill; your hours depend on climate, house and settings. Rate: U.S. average residential 18.31¢/kWh (EIA, July 2026 (preliminary)).
Estimate with your own hours and rate · Compare with another system
Similar-capacity single-zone units from other DIY brands
| Outdoor unit | Best SEER2 | Best HSPF2 | Best % cap. at 5°F | Cold climate |
|---|---|---|---|---|
| ACiQ ACIQ-48ZPL-HP230B | 17 | 12 | 96% | Yes |
| ACiQ ACIQ-48Z-HH-M6C | 23 | 11 | 96% | Yes |
| Senville SENA-48HF-MOA | 23 | 11 | 96% | Yes |
| ACiQ ACIQ-48ZPL-HP230C | 18.5 | 10.8 | 91% | Yes |
| ACiQ ACIQ-60ZPL-HP230C | 18 | 10.7 | 90% | Yes |
| Senville SENA-55HF-MOA | 20 | 10.7 | 87% | Yes |
| ACiQ ACIQ-55Z-HH-M6C | 22.2 | 10.5 | 85% | Yes |
| MRCOOL DIY-MULTI6-55HP230D-O | 20 | 10.5 | 84% | Yes |
See Pioneer on the manufacturer's site (plain link, not an affiliate link)
We have not tested or installed this equipment. Data gaps: price, sound level, line-set length, warranty and installation requirements are not in ENERGY STAR data. Confirm the AHRI reference number on your quote matches a certified pairing.