# MRCOOL DIY 5th Gen 12,000 BTU ceiling cassette indoor unit

> MRCOOL DIY 5th Gen 12,000 BTU ceiling cassette indoor unit (DIYCASSETTE12HP-230D25-O) is a 12,000 BTU indoor unit from MRCOOL DIY 5th Gen. It has a ceiling cassette indoor unit and runs on 208/230V. Lowest in-stock price on file: $1,378 at Got Ductless (checked Oct 14, 2026).

- Line: [MRCOOL DIY 5th Gen](https://minisplitfacts.com/lines/mrcool-diy-5th-gen/)
- Category: [Indoor units](https://minisplitfacts.com/compare/indoor-unit/)
- Size tier within its line: 12k
- Status: current
- Data confidence: confirmed (last verified 2026-10-14; [what this means](https://minisplitfacts.com/how-we-compare/#confidence))
- Page: https://minisplitfacts.com/products/mrcool-diy-5th-gen-12k-ceiling-cassette-indoor-unit/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model number | DIYCASSETTE12HP-230D25-O | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Size | 12,000 BTU/h | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Indoor unit style | Ceiling cassette | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Voltage | 208/230V | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Refrigerant | not published |  |
| Line connection | Quick-connect | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Wi-Fi control | not published |  |
| Indoor sound level (quietest) | not published |  |
| Parts warranty | 5 years | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-diy-5-wr-en-01.pdf) (brand, pdf, 2026-10-14) |
| Warranty if you install it yourself | Kept | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-diy-5-wr-en-01.pdf) (brand, pdf, 2026-10-14) |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| Got Ductless | $1,378 | in stock | 2026-10-14 | [View at Got Ductless](https://gotductless.com/products/mr-cool-diycassette12hp-230d25-o-12-000-btu-one-way-ceiling-cassette-indoor-unit-r454b) |
| HVACDirect | $1,421 | in stock | 2026-10-14 | [View at HVACDirect](https://hvacdirect.com/mrcool-diy-series-5th-gen-outtasight-12k-btu-230v-one-way-ceiling-cassette.html) |

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

## The equivalent in other lines

Same category, same size tier (12k), different line:

- [MRCOOL Olympus 12,000 BTU wall mount indoor unit](https://minisplitfacts.com/products/mrcool-olympus-12k-wall-mount-indoor-unit/)
- [MRCOOL Olympus 12,000 BTU ceiling cassette indoor unit](https://minisplitfacts.com/products/mrcool-olympus-12k-ceiling-cassette-indoor-unit/)
- [MRCOOL Olympus 12,000 BTU concealed duct indoor unit](https://minisplitfacts.com/products/mrcool-olympus-12k-slim-duct-indoor-unit/)
- [Pioneer Quantum Ultra 12,000 BTU concealed duct indoor unit (MSI-24)](https://minisplitfacts.com/products/pioneer-quantum-ultra-12k-duct-indoor-unit-msi-24/) — $688
- [Pioneer Quantum Ultra 12,000 BTU ceiling cassette indoor unit (MSI-24)](https://minisplitfacts.com/products/pioneer-quantum-ultra-12k-cassette-indoor-unit-msi-24/) — $828
- [Pioneer Quantum Ultra 12,000 BTU wall mount indoor unit (MSI-24)](https://minisplitfacts.com/products/pioneer-quantum-ultra-12k-wall-indoor-unit-msi-24/) — $418
- [Senville AURA 12,000 BTU wall mount multi-zone indoor unit](https://minisplitfacts.com/products/senville-aura-12k-wall-indoor-unit/) — $459.99
- [Senville AURA 12,000 BTU one-way cassette multi-zone indoor unit](https://minisplitfacts.com/products/senville-aura-12k-one-way-cassette-indoor-unit/) — $539.99


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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.