Best 36,000 BTU Mini Splits (3-Ton)
The 36,000 BTU (3-ton) class is the top of mainstream single-condenser residential sizing: whole small homes, big shops, and the standard condenser size behind 3-zone systems. Our dataset holds two verified 36k systems, both MRCOOL - one single-zone true DIY, one 3-zone bundle - so this page is as much about that fork as about the size.
Computed from our dataset
- 2 system(s) from our verified dataset appear on this page.
- Price range: $3,469 to $4,538 (verified 2026-11-04).
- Cheapest: MRCOOL DIY 5th Gen 36k at $3,469 (Sylvane).
- Highest SEER2: MRCOOL DIY 5th Gen 3-Zone 36k (9+9+18) at 23 SEER2.
- Best heating rating: MRCOOL DIY 5th Gen 3-Zone 36k (9+9+18), rated to -13°F.
| System | Zones | BTU | Coverage | SEER2 | Heats to | Install | Price | |
|---|---|---|---|---|---|---|---|---|
| MRCOOL DIY 5th Gen 36k DIY-36-HP-WM-230D25-O | 1 | 36,000 | up to 1,550 sq ft | 18 | — | Pro / flare | $3,469 at Sylvane | Check price |
| MRCOOL DIY 5th Gen 3-Zone 36k (9+9+18) DIY-MULTI5-36HP230D | 3 | 36,000 | Per-zone: 400 / 400 / 1,000 sq ft | 23 | -13°F | Pro / flare | $4,538 at HVACDirect | Check price at HVACDirect |
Buying notes
- Class pages on this site list every verified system in the class, including multi-zone systems whose condenser carries this rating.
- Where the class is thin, we say so rather than padding the table - the dataset grows by verification, and this page updates with it.