MRCOOL DIY 5th Gen 3-Zone 36k (9+9+18): Specs, Price & Heating Rating
The MRCOOL DIY 5th Gen 3-Zone 36k (9+9+18) is a 36,000 BTU, 3-zone mini split system from MRCOOL (model DIY-MULTI5-36HP230D). Manufacturer-stated coverage: Per-zone: 400 / 400 / 1,000 sq ft. Verified SEER2: 23. Manufacturer heating rating: down to -13F. It is a flare-install system in our classification (pro install, or an equipped DIY install with vacuum and gauges). Verified price: $4,538 at HVACDirect (checked 2026-11-04).
Computed from our dataset
- 1 system(s) from our verified dataset appear on this page.
- Price range: $4,538 to $4,538 (verified 2026-11-04).
- Cheapest: MRCOOL DIY 5th Gen 3-Zone 36k (9+9+18) at $4,538 (HVACDirect).
- 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.
- Dataset note: Line-set inclusion is ambiguous on the product page: the included list mentions Quick Connect line sets, but options price them per zone (+$227-$272). Budget for line sets separately.
| System | Zones | BTU | Coverage | SEER2 | Heats to | Install | 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
- Specs on this page are exactly the verified fields in our dataset; blanks in the table mean the source did not publish a verifiable figure, and the dataset notes say why where we know.