Mini-splitENERGY STAR

Pioneer Diamante WYS012

4.4(1,340 retailer ratings) by Pioneer · Model WYS012-23

A DIY-friendly favorite with a Toshiba inverter compressor — quiet, efficient, and well-supported, with an optional install kit.

Cooling

12,000 BTU

Covers

500 ft²

Efficiency

20SEER

Noise

34 dB

$949 est.

typical street price · via Amazon

Check Price

Is 12,000 BTU right for your room? Run the sizing calculator

Strengths & trade-offs

Pros

Toshiba inverter compressor
Quiet & efficient (20 SEER)
Optional DIY kit

Cons

Wi-Fi is an add-on
Lineset/install not included

What the Pioneer Diamante WYS012 costs to run

Estimated from this unit's 20SEER rating at 8 hours/day of cooling, using average residential electricity rates for each US climate zone. Your usage and utility rate will shift these numbers — run the calculator for your exact room.

Climate zone	Example regions	Est. cost / month
Cool North	Pacific NW, Upper Midwest, New England	$26 /mo
Mixed / Temperate	Mid-Atlantic, Midwest, Mountain	$28 /mo
Hot & Humid	Southeast, Gulf Coast, Texas	$23 /mo
Hot & Dry	Southwest, Desert	$25 /mo

Full specifications

Type	Mini-split air conditioner
Cooling capacity	12,000 BTU
Rated coverage	500 ft²
Efficiency	20 SEER
Noise (low)	34 dB
Smart features	App
ENERGY STAR	Yes
Model number	WYS012-23
Typical street price	$949