# Pioneer Diamante Ultra 18,000 BTU  indoor unit (WT-MI)

> Pioneer Diamante Ultra 18,000 BTU  indoor unit (WT-MI) (WT018GLFI22HLD) is an indoor unit from Pioneer Diamante Ultra. It runs on 208/230V. It is no longer sold new.

- Line: [Pioneer Diamante Ultra (R-410A)](https://minisplitfacts.com/lines/pioneer-diamante-ultra-r410a/)
- Category: [Indoor units](https://minisplitfacts.com/compare/indoor-unit/)
- Status: no longer sold new
- Data confidence: confirmed (last verified 2026-10-14; [what this means](https://minisplitfacts.com/how-we-compare/#confidence))
- Page: https://minisplitfacts.com/products/pioneer-diamante-ultra-r410a-18k-indoor-unit-wt-mi/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model number | WT018GLFI22HLD | [pioneerminisplit.com](https://pioneerminisplit.com/products/pioneer-diamante-ultra-multi-zone-indoor-section-18-000-btu-230v-ductless-mini-split-wi-fi-inverter-air-conditioner-heat-pump) (brand, page, 2026-10-14) |
| Size | 18,000 BTU/h | [pioneerminisplit.com](https://pioneerminisplit.com/products/pioneer-diamante-ultra-multi-zone-indoor-section-18-000-btu-230v-ductless-mini-split-wi-fi-inverter-air-conditioner-heat-pump) (brand, page, 2026-10-14) |
| Indoor unit style | not published |  |
| Voltage | 208/230V | [pioneerminisplit.com](https://pioneerminisplit.com/products/pioneer-diamante-ultra-multi-zone-indoor-section-18-000-btu-230v-ductless-mini-split-wi-fi-inverter-air-conditioner-heat-pump) (brand, page, 2026-10-14) |
| Refrigerant | not published |  |
| Line connection | Flare | [pioneerminisplit.com](https://pioneerminisplit.com/products/pioneer-diamante-ultra-multi-zone-indoor-section-18-000-btu-230v-ductless-mini-split-wi-fi-inverter-air-conditioner-heat-pump) (brand, page, 2026-10-14) |
| Wi-Fi control | not published |  |
| Indoor sound level (quietest) | not published |  |
| Parts warranty | 5 years | [pioneerminisplit.com](https://www.pioneerminisplit.com/pages/warranty) (brand, page, 2026-10-14) |
| Warranty if you install it yourself | Kept | [pioneerminisplit.com](https://www.pioneerminisplit.com/pages/warranty) (brand, page, 2026-10-14) |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| Pioneer | $448 | out of stock | 2026-10-14 | [View at Pioneer](https://pioneerminisplit.com/products/pioneer-diamante-ultra-multi-zone-indoor-section-18-000-btu-230v-ductless-mini-split-wi-fi-inverter-air-conditioner-heat-pump) |

Prices are re-checked weekly; a date more than a month old means the store could not be re-read.

## What to buy instead

Same category, different line:

- [MRCOOL DIY 5th Gen 6,000 BTU ceiling cassette indoor unit](https://minisplitfacts.com/products/mrcool-diy-5th-gen-6k-ceiling-cassette-indoor-unit/) — $1,273
- [MRCOOL DIY 5th Gen 9,000 BTU ceiling cassette indoor unit](https://minisplitfacts.com/products/mrcool-diy-5th-gen-9k-ceiling-cassette-indoor-unit/) — $1,368
- [MRCOOL DIY 5th Gen 12,000 BTU ceiling cassette indoor unit](https://minisplitfacts.com/products/mrcool-diy-5th-gen-12k-ceiling-cassette-indoor-unit/) — $1,378
- [MRCOOL DIY 5th Gen 18,000 BTU ceiling cassette indoor unit](https://minisplitfacts.com/products/mrcool-diy-5th-gen-18k-ceiling-cassette-indoor-unit/) — $1,397
- [MRCOOL Olympus 9,000 BTU wall mount indoor unit](https://minisplitfacts.com/products/mrcool-olympus-9k-wall-mount-indoor-unit/)
- [MRCOOL Olympus 12,000 BTU wall mount indoor unit](https://minisplitfacts.com/products/mrcool-olympus-12k-wall-mount-indoor-unit/)
- [MRCOOL Olympus 18,000 BTU wall mount indoor unit](https://minisplitfacts.com/products/mrcool-olympus-18k-wall-mount-indoor-unit/)
- [MRCOOL Olympus 24,000 BTU wall mount indoor unit](https://minisplitfacts.com/products/mrcool-olympus-24k-wall-mount-indoor-unit/)


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MiniSplit Facts lists modular tool storage from every brand side by side, with a source for every spec. [How we compare](https://minisplitfacts.com/how-we-compare/). Data as of 2026-10-14.