The MrCool DIY 5th Gen 12,000 BTU 115V rates 3.6 among 12,000 BTU DIY mini-splits; the MrCool DIY Easy Pro 9,000 BTU 115V rates 3.1 among 9,000 BTU ones. The MrCool DIY Easy Pro 9,000 BTU 115V costs $272 less ($1,487 vs $1,759).
For someone who wants a true plug-together install with no tools beyond a drill, and a warranty that survives it. Expect to pay well over the price of a flare unit with the same cold-weather output.
Amazon $1,759 MRCOOL DIY Direct $2,370A middle step between MrCool’s Select and DIY 5th Gen: quick-connect and a fair warranty, but it loses much of its heat in a cold snap. Best for mild winters.
MRCOOL DIY Direct $1,487Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
These two sit in different size classes (12,000 BTU and 9,000 BTU), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | MrCool DIY 5th Gen 12,000 BTU 115V | MrCool DIY Easy Pro 9,000 BTU 115V |
|---|---|---|
| Overall rating | 3.6/5 | 3.1/5 |
| Value 35% | 56 $209 per 1,000 Btu/h of heat at 5 °F | 44 $240 per 1,000 Btu/h of heat at 5 °F |
| Cold weather 25% | 51 keeps 70% of its heat at 5 °F, heats down to -13 °F | 41 keeps 62% of its heat at 5 °F, heats down to -13 °F |
| Efficiency 20% | 71 10.2 HSPF2, 23.5 SEER2, COP 2.09 at 5 °F | 43 9.2 HSPF2, 20.2 SEER2, COP 2.06 at 5 °F |
| Warranty 15% | 64 7-year compressor, 5-year parts | 36 5-year compressor, 3-year parts |
| Noise 5% | 100 indoor unit from 18 dB(A) | 100 indoor unit from 18 dB(A) |
| MrCool DIY 5th Gen 12,000 BTU 115V | MrCool DIY Easy Pro 9,000 BTU 115V | |
|---|---|---|
| Capacity (certified) | ||
| Size (nominal) | 12,000 BTU | 9,000 BTU |
| Cooling at 95 °F | 12,000 Btu/h | 9,000 Btu/h |
| Heating at 47 °F | 12,000 Btu/h | 10,000 Btu/h |
| Heating at 17 °F (max) | 8,500 Btu/h | 7,200 Btu/h |
| Heating at 5 °F (max) | 8,400 Btu/h | 6,200 Btu/h |
| Heat kept at 5 °F | 70% | 62% |
| Price per 1,000 Btu/h at 5 °F | $209 | $240 |
| Efficiency (certified) | ||
| HSPF2 (Region IV) | 10.2 | 9.2 |
| SEER2 | 23.5 | 20.2 |
| EER2 | 12.5 | 11.3 |
| COP at 5 °F | 2.09 | 2.06 |
| ENERGY STAR | ENERGY STAR Cold Climate | ENERGY STAR |
| AHRI certificate | 216032544 | 217678020 |
| Operating range | ||
| Heats down to | -13 °F | -13 °F |
| Cooling range | -13 to 122 °F | - |
| Installation | ||
| Line set connection | Quick-connect (no vacuum pump) | Quick-connect (no vacuum pump) |
| Line set | 25 ft included, up to 75 ft | 11.5 ft included, up to 75 ft |
| Voltage | 115 V | 115 V |
| Refrigerant | R-454B | R-454B |
| Indoor unit | DIY-12-HP-WMAH-115D25-O | EZPRO-09-HP-WMAH-115DE-O |
| Outdoor unit | DIY-12-HP-C-115D25-O | EZPRO-09-HP-C-11511DE-O |
| Build | ||
| Indoor noise | 18–43 dB(A) | 18–43 dB(A) |
| Outdoor noise | 54 dB(A) | 54 dB(A) |
| Wi-Fi | Built in | Built in |
| Room size (maker) | up to 550 sq ft | up to 400 sq ft |
| Weight | indoor 24.9 lb / outdoor 65.5 lb | indoor 23.8 lb / outdoor 54.7 lb |
| Warranty | 7 yr compressor, 5 yr parts | 5 yr compressor, 3 yr parts |
| Warranty with DIY install | Yes | Yes |
