The MrCool DIY 5th Gen 36,000 BTU 230V is the better mini-split overall, rated 2.9 to 2.3. The MrCool DIY 5th Gen 36,000 BTU 230V leads on cold weather, noise and warranty. The Senville Leto 36,000 BTU costs $1,470 less ($2,099.99 vs $3,569.99).
The pricier of the two 36,000 BTU quick-connect units, with a better heating limit and quieter indoor unit than the Klimaire. Neither keeps much of its heat in deep cold.
Amazon $3,569.99 MRCOOL DIY Direct $3,790Senville’s budget line, for cooling and mild winters: it stops heating below 5 °F, and the 5-year warranty needs a licensed installer.
Senville $2,099.99Prices 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.
Each factor is scored 0-100 against the same fixed reference points for every 36,000 BTU mini-split; a clear win is highlighted. How we rank explains each one.
| Factor weight | MrCool DIY 5th Gen 36,000 BTU 230V | Senville Leto 36,000 BTU |
|---|---|---|
| Overall rating | 2.9/5 | 2.3/5 |
| Cold weather 40% | 40 keeps 61% of its heat at 5 °F, heats down to -13 °F | 11 keeps 59% of its heat at 5 °F, heats down to 5 °F |
| Efficiency 30% | 21 8.5 HSPF2, 18 SEER2, COP 1.97 at 5 °F | 15 8.5 HSPF2, 18 SEER2, COP 1.80 at 5 °F |
| Warranty 20% | 64 7-year compressor, 5-year parts | 49 5-year compressor, 5-year parts |
| Noise 10% | 60 indoor unit from 27.5 dB(A) | 29 indoor unit from 34 dB(A) |
| MrCool DIY 5th Gen 36,000 BTU 230V | Senville Leto 36,000 BTU | |
|---|---|---|
| Capacity (certified) | ||
| Size (nominal) | 36,000 BTU | 36,000 BTU |
| Cooling at 95 °F | 36,000 Btu/h | 36,000 Btu/h |
| Heating at 47 °F | 36,000 Btu/h | 36,000 Btu/h |
| Heating at 17 °F (max) | 26,300 Btu/h | 25,000 Btu/h |
| Heating at 5 °F (max) | 22,000 Btu/h | 21,400 Btu/h |
| Heat kept at 5 °F | 61% | 59% |
| Price per 1,000 Btu/h at 5 °F | $162 | $98 |
| Efficiency (certified) | ||
| HSPF2 (Region IV) | 8.5 | 8.5 |
| SEER2 | 18 | 18 |
| EER2 | 8.5 | 9 |
| COP at 5 °F | 1.97 | 1.80 |
| ENERGY STAR | Not ENERGY STAR | Not ENERGY STAR |
| AHRI certificate | 216032548 | 215735293 |
| Operating range | ||
| Heats down to | -13 °F | 5 °F |
| Cooling range | -13 to 122 °F | - |
| Installation | ||
| Installed by | Sold for self-install (DIY) | Professional (sold through installers) |
| Line set connection | Quick-connect (no vacuum pump) | Flare fittings (vacuum pump needed) |
| Line set | 25 ft included, up to 75 ft | up to 213 ft |
| Voltage | 230 V | 230 V |
| Refrigerant | R-454B | R-454B |
| Indoor unit | DIY-36-HP-WMAH-230D25-O | SENL-36CD-ILL |
| Outdoor unit | DIY-36-HP-C-230D25-O | SENL-36CD-OL |
| Build | ||
| Indoor noise | 27.5–55.5 dB(A) | 34–56.5 dB(A) |
| Outdoor noise | 60.5 dB(A) | 61.4 dB(A) |
| Wi-Fi | Built in | Built in |
| Room size (maker) | up to 1,550 sq ft | up to 1,800 sq ft |
| Weight | indoor 48.7 lb / outdoor 152.1 lb | indoor 40.3 lb / outdoor 142.9 lb |
| Warranty | 7 yr compressor, 5 yr parts | 5 yr compressor, 5 yr parts |
| Warranty with DIY install | Yes | No, a licensed installer is required |
