Pick the MRCOOL DIY 12,000 BTU 115V if you're comfortable with the long-proven R-410A design and you want a published efficiency rating. Pick the MRCOOL Easy Pro 12,000 BTU 115V if you want the newer R-454B refrigerant.
The central trade-off
Refrigerant. R-410A in the MRCOOL DIY 12,000 BTU 115V, R-454B in the MRCOOL Easy Pro 12,000 BTU 115V. New systems moved from R-410A to lower-impact A2L refrigerants in 2025; existing R-410A stock can still be installed.
Stated rating. The MRCOOL DIY 12,000 BTU 115V lists 22 SEER; the other's listing gives no seasonal efficiency figure.
Noise. The MRCOOL DIY 12,000 BTU 115V lists 23.5 dB indoors at its quietest, against 43 dB.
Warranty. MRCOOL DIY 12,000 BTU 115V: Warranty. MRCOOL Easy Pro 12,000 BTU 115V: 2 Year Compressor Warranty.
Side by side
| Specification | MRCOOL DIY 12,000 BTU 115V | MRCOOL Easy Pro 12,000 BTU 115V |
|---|---|---|
| Cooling (maker) | 12000 BTU | 12000 BTU |
| Heating (maker) | Not stated by the maker | 12,000 |
| SEER2 | Not stated by the maker | Not stated by the maker |
| HSPF2 | Not stated by the maker | Not stated by the maker |
| Heats down to (maker) | Not stated by the maker | Not stated by the maker |
| Voltage | 115 | 115 V |
| Refrigerant | R-410A | R-454B |
| Room size (maker) | 500 sq ft | 550 sq ft |
| Indoor noise (maker) | 23.5 db | 43 db |
| Line set included | Not stated by the maker | Not stated by the maker |
| Warranty | Warranty | 2 Year Compressor Warranty |
Values are the makers' published specifications. "Not stated" means the maker doesn't publish it.
Which should you choose?
Choose the MRCOOL DIY 12,000 BTU 115V if
- You're comfortable with the long-proven R-410A design
- You want a published efficiency rating
- It's going in a bedroom