The MRCOOL Advantage 12,000 BTU 5th Gen Mini Split - 230V and the Pioneer Diamante Essenza 11,500 BTU Ductless Mini Split 230V side by side on one honest scale: cooling, room coverage, noise, energy rating and live price, with which one actually fits your room. Every number is the manufacturer's own or a live retailer price. We never invent a spec.
The verdict
For your 250 sq ft room, both the MRCOOL Advantage 12,000 BTU 5th Gen Mini Split - 230V and the Pioneer Diamante Essenza 11,500 BTU Ductless Mini Split 230V fit equally well. The real difference: the MRCOOL Advantage 12,000 BTU 5th Gen Mini Split - 230V is quieter at 44 dB(A), while the Pioneer Diamante Essenza 11,500 BTU Ductless Mini Split 230V is cheaper at $664. Compare their specs side by side below.
![]() MRCOOL Advantage 12,000 BTU 5th Gen Mini Split - 230VSplitSEER2 21.3 In stock $979 Buy at Sylvane | ![]() Pioneer Diamante Essenza 11,500 BTU Ductless Mini Split 230VSplitSEER2 17 In stock $664 Buy at Sylvane | |
|---|---|---|
| Cooling & fit | ||
| Room fit | Fits your 23.2 m² | Fits your 23.2 m² |
| Cooling power | 12,000 BTU · 3.5 kWBest | 11,500 BTU · 3.4 kW |
| Covers | up to 500 sq ft | up to 500 sq ft |
| Comfort | ||
| Indoor noise | ||
compare.ac may earn a commission on purchases, at no cost to you. It never changes the price you pay or how we rank units.
Both units are scored on the exact same scale, from the manufacturer's own published specs and the live retailer price where we have one. Room fit uses the official ENERGY STAR sizing chart, or an estimate from cooling power when a maker publishes no coverage. Where the two efficiency scales are not comparable, we never crown a winner. Nobody can pay for placement.
Read our full methodologyThe bigger questions behind this comparison, answered from live prices and real specs.
| 44 dB(A)about as loud as a quiet libraryBest |
| 55 dB(A)about as loud as a dishwasher |
| Indoor unit size | Slim | CompactBest |
|---|
| Efficiency | ||
| Energy rating | SEER2 21.3 | SEER2 17 |
|---|---|---|
| SEER2 (cooling) | 21.3 | 17 |
| Practicalities | ||
| Heats too | Yes | Yes |
|---|---|---|
| Heating output | 12,000 BTU | 11,500 BTU |
| Heats down to | -22°F outdoors | 5°F outdoors |
| Refrigerant | R-454B | R-32 |
| Install | Certified installer ($1,500-4,000 fitted, est.) | Certified installer ($1,500-4,000 fitted, est.) |
| Outdoor unit | Yes | Yes |
| Warranty | 2-Year Compressor Warranty; 1-Year Parts Warranty, Eligible for MRCOOL Care Program | 5-Year Parts and Compressor Warranty (With Registration) |
| Price | ||
| Price | $979 | $664Best |
|---|---|---|