Pioneer Diamante Essenza 12,000 BTU wall mount system (WYT-20U)
Pioneer Diamante Essenza · Single-zone systems · 12,000 BTU
$838 at Pioneer · checked Oct 14, 2026
Pioneer Diamante Essenza 12,000 BTU wall mount system (WYT-20U) (WYT012GLUI20RL) is a 12,000 BTU system from Pioneer Diamante Essenza. It has a wall mount indoor unit, runs on 208/230V, is rated 20 SEER2, has an HSPF2 of 10, heats down to -4 °F by the brand's rating, uses R-32 refrigerant, comes with a 16 ft line set, and carries a 5-year compressor warranty. Lowest in-stock price on file: $838 at Pioneer (checked Oct 14, 2026).
| Category | Single-zone systems |
|---|---|
| Model number | WYT012GLUI20RLpioneerminisplit.com |
| Size ? | 12,000 BTU/hpioneerminisplit.com |
| Indoor unit style ? | Wall mountpioneerminisplit.com |
| Voltage ? | 208/230Vpioneerminisplit.com |
| Outdoor unit model | YN012GLUI20RPEpioneerminisplit.com |
| Indoor unit model | WT012GLUI20HLEpioneerminisplit.com |
| SEER2 (cooling efficiency) ? | 20pioneerminisplit.com |
| EER2 (efficiency at 95 °F) ? | 9.5pioneerminisplit.com |
| HSPF2 (heating efficiency) ? | 10pioneerminisplit.com |
| Rated cooling capacity ? | 12,000 BTU/hpioneerminisplit.com |
| Heating capacity at 47 °F ? | 12,000 BTU/hpioneerminisplit.com |
| Heating capacity at 17 °F ? | — |
| Heating capacity at 5 °F ? | — |
| COP at 5 °F ? | 1.8pioneerminisplit.com |
| Heats down to ? | -4 °Fpioneerminisplit.com |
| Refrigerant ? | R-32pioneerminisplit.com |
| ENERGY STAR certified ? | — |
| ENERGY STAR cold climate ? | — |
| Line connection ? | Flarepioneerminisplit.com |
| Line set included | 16 ftpioneerminisplit.com |
| Wi-Fi control | — |
| Indoor sound level (quietest) | 28 dB(A)pioneerminisplit.com |
| Outdoor sound level | 55 dB(A)pioneerminisplit.com |
| Room size (brand's claim) | 500 sq ftpioneerminisplit.com |
| Compressor warranty ? | 5 yearspioneerminisplit.com |
| Parts warranty ? | 5 yearspioneerminisplit.com |
| Warranty if you install it yourself ? | Keptpioneerminisplit.com |
| Outdoor unit size (W×D×H) | 31.5 × 12 × 21.75 inpioneerminisplit.com |
| Indoor unit size (W×D×H) | 31.88 × 7.75 × 11.5 inpioneerminisplit.com |
| Outdoor unit weight | 51.8 lbpioneerminisplit.com |
| Sold as | Single product |
| Availability | Sold by several retailers |
Warranty, and installing it yourself
Self-installing keeps the warranty, by Pioneer's own terms.
The policy sets no installer requirement; it excludes damage from faulty installation. "Obtaining Warranty Service: To obtain warranty service, owner must first contact the installer or any other qualified contractor, to determine the cause of the failure and diagnose the Product."
From pioneerminisplit.com ↗, read 2026-10-14. Terms change, and local law can require a licensed technician for refrigerant or electrical work whatever the warranty says.
- 5 years on the compressor
- 5 years on parts
"5 Year Product Guarantee We offer a generous parts and compressor warranty for up to 5 years."
From pioneerminisplit.com ↗, read 2026-10-14.
Where to buy
Prices are re-checked every week. A date more than a month old means the store could not be re-read, so the price may have moved.
Price history
Price tracking for this product began October 14, 2026. Prices are re-checked every week, and the chart fills in from the next check.
Every recorded price change (1)
A row is recorded only when a store's price or stock changes; each line then runs to the date the store was last checked. Amazon prices aren't shown (store policy).
Where this came from
confirmed The part number and every spec shown were read from the brand's or a store's own material: a product page, a spec sheet or a product feed, or an archived copy of one. Last verified 2026-10-14. What the labels mean.
The equivalent in other lines
Same category, same size (12k), wall mount, 208/230V, from other lines; cheapest first, at most two per line. Open any of them side by side with this system, or tick several to compare up to four.