- Capacity
- 9K BTU
- SEER2
- 22.6
- Power
- 208–230 V
- HSPF2 (Region IV)
- 12.1
- Refrigerant
- R-454B
In stock
Shop by size
9,000 BTU systems
9K BTU units cool and heat roughly 300 to 450 sq ft, depending on ceiling height, insulation and sun.
- Room size
- 300 to 450 sq ft
- Capacity
- 0.8 ton
- Rule of thumb
- 20 to 30 BTU per sq ft
- Products
- 15
- Capacity
- 9KBTU
- SEER2 up to
- 27.4
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Approved pairings
The outdoor units these heads pair with.
A head needs an outdoor unit. These are the manufacturer-approved outdoor units for the heads in this collection, the most-paired first. Each product page lists its own pairings.
Regular Outdoor, Outdoor unitRegular Outdoor 9KCH-RES09-230VOApproved for 6 heads in this collection
Hyper Outdoor, Outdoor unitHyper Outdoor 9KCH-RHP09-230VOApproved for 6 heads in this collection
System18K Multi-Zone Outdoor UnitCH-R18MES-230VOApproved for 4 heads in this collection
SystemHyper Heat 19K Multi-Zone Outdoor Unit, without Shut-off ValvesCH-RHP19M-230VOApproved for 4 heads in this collection
Buying guide
What the 9K BTU class holds
Everything rated from 7,500 to 10,499 BTU lands on this page, because units sell by the nearest size class: 15 products right now, including 6 wall-mount heads, 1 ceiling cassette, 1 floor or ceiling head, 5 single-zone outdoor units and 2 PTAC and through-the-wall units.
A 9K unit suits roughly 300 to 450 sq ft with 8 ft ceilings and average insulation. Ceiling height, insulation, sun, windows and a kitchen all move that number, and the sizing guide shows by how much; the system builder does the math for each room.
Brands at this size: Cooper & Hunter. SEER2 ratings run from 21.2 to 27.4. Voltages on offer: 115 V and 208–230 V.
A head at this size pairs with an outdoor unit of the same class for one room, or joins a multi-zone system as one of its zones. Each product page lists the pairings the manufacturer approves.
Common questions
Can I install a mini split myself?
Mounting, wiring and running the line set are within reach of a capable DIYer. The refrigerant connection, vacuum and charge should be done by a licensed HVAC technician in most states, and most warranties require it. We can point you to an installer in your area.
How do I know what size I need?
Use the system builder: enter the rooms and it sizes each one and shows only manufacturer-approved combinations. For vaulted ceilings, sunrooms or very old houses, call and we will size it by hand.
Do you ship nationwide?
Yes. Every system ships to all 50 states.
Can I return a unit?
No. All sales are final, so size it right first: the builder and the sizing guide are free, and a person confirms the pairing on every order. If anything arrives damaged, we handle the claim for you, and defects are covered by the manufacturer warranty.
Sizing help
Not sure which size?
The builder sizes each room and shows only the pairings Cooper & Hunter approves. The sizing guide explains the rules behind it.
A person checks the pairing on every order before it ships.
Monday to Friday, 8 AM to 5 PM Central
