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No indoor units match those filters.
Indoor units questions
Which brands sell indoor units online?
3 brands, with the number of indoor units each sells: MRCOOL (22), Pioneer (14) and Senville (16).
What is the cheapest indoor unit?
The Pioneer Quantum Ultra 9,000 BTU wall mount indoor unit (MSI-24) at $398 from Pioneer (checked Oct 14, 2026). Prices are re-checked weekly.
Which indoor units publish a warranty if you install it yourself?
40 of the 52 indoor units we list have a published warranty if you install it yourself (Kept and Licensed installer required). What the brand's warranty says when the owner installs the unit: kept, reduced, or void without a licensed installer. The quote is on the product page.
Answered from the catalogue data, as of October 14, 2026. How we compare.
Legacy & discontinued 23 indoor units
From Pioneer Quantum multi-zone (R-410A) and Pioneer Diamante Ultra (R-410A) — lines no longer sold new. Kept apart from the comparison above because you cannot buy them off the shelf, but still listed for anyone matching an old box. Why these are separate →
| Brand | Product | Last price |
|---|---|---|
| Pioneer | 12,000 BTU indoor unit (WT-MI) Pioneer Diamante Ultra (R-410A) | — |
| Pioneer | 18,000 BTU indoor unit (WT-MI) Pioneer Diamante Ultra (R-410A) | — |
| Pioneer | 24,000 BTU indoor unit (WT-MI) Pioneer Diamante Ultra (R-410A) | — |
| Pioneer | 9,000 BTU indoor unit (WT-MI) Pioneer Diamante Ultra (R-410A) | — |
| Pioneer | 12,000 BTU ceiling cassette indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 12,000 BTU concealed duct indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 12,000 BTU floor console indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 12,000 BTU one-way cassette indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 12,000 BTU wall mount indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | $358 |
| Pioneer | 18,000 BTU ceiling cassette indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 18,000 BTU concealed duct indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 18,000 BTU floor console indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 18,000 BTU floor/ceiling indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 18,000 BTU one-way cassette indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 18,000 BTU wall mount indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 24,000 BTU ceiling cassette indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 24,000 BTU concealed duct indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 24,000 BTU floor/ceiling indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 24,000 BTU wall mount indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 9,000 BTU ceiling cassette indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 9,000 BTU concealed duct indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 9,000 BTU one-way cassette indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | — |
| Pioneer | 9,000 BTU wall mount indoor unit (MS-I) Pioneer Quantum multi-zone (R-410A) | $313 |