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12000 BTU Mini Split Systems
Compare Classic America 12,000 BTU ductless heat pumps — 19 SEER2 and 17 SEER2, both 115V~/60Hz/1P, with WiFi + Alexa and free single-box shipping.
Is 12,000 BTU the right size?
The free what size mini split do I need calculator checks cooling and heating, then matches a model.
Looking for a 12000 BTU mini split (also written 12,000 BTU) that cools and heats without ductwork? Classic America offers two verified 12,000 BTU single-zone inverter mini split heat pumps, both on 115V~/60Hz/1P (the class shoppers call 110V / 120V).
The 19 SEER2 model (MSC-12-HAC1) is rated for roughly up to 550 square feet under typical conditions. The 17 SEER2 model (MSCR32-12CHSA1) publishes 11,500 BTU cooling capacity and coverage around up to 280 square feet — choose it when your room load and budget point that way. Compare SEER2, coverage, and specs side by side on this hub or the compare tool, then confirm with the free size finder.
Both systems include Tuya WiFi + Amazon Alexa on top of the included remote, ship free in one box, and carry 5-year compressor / 1-year parts warranty from our Miami Gardens, FL team. Prefer every 115V option together? Visit the 110V mini split hub. Need less or more capacity? See 9000 BTU or 2 ton. Licensed HVAC install is recommended for refrigerant and electrical work — delivery & installation · install planner · 1-800-349-4360 Ext. 204.
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12,000 BTU Mini Split AC with Heat Pump
12,000 BTU Mini Split Inverter with Heat Pump
Between sizes? The size finder settles it, or compare every spec in the compare tool.
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19 SEER2 vs 17 SEER2 — which 12k to choose
The 19 SEER2 system (MSC-12-HAC1, R410a) is the higher-efficiency, larger-room option: 12,000 BTU cooling, 12,200 BTU heating and a 16 ft line set in the box. The 17 SEER2 system (MSCR32-12CHSA1, R32) publishes 11,500 BTU cooling and 11,500 BTU heating with a higher published HSPF2 (9.5 Region IV).
| Model | Cooling / heating | Coverage | Power | SEER2 |
|---|---|---|---|---|
| 12,000 BTU mini split | 12,000 / 12,200 BTU | Up to 550 sq ft | 115V | 19 |
| 12,000 BTU mini split, 17 SEER2 | 11,500 / 11,500 BTU | Up to 280 sq ft | 115V | 17 |
From each model's spec sheet.
Coverage
Coverage notes — 550 sq ft vs 280 sq ft
These are the manufacturers' published ratings under typical conditions: up to 550 sq ft for the 19 SEER2 and up to 280 sq ft for the 17 SEER2. They are not interchangeable — the 17 SEER2 is rated for a much smaller room despite the 12,000 BTU class name.
Sizing
Is 12,000 BTU the right size?
The ENERGY STAR chart puts 450–550 sq ft at 12,000 BTU with an 8 ft ceiling and average sun, before adjustments. Run the free size finder with your sun, ceiling, insulation and climate; it checks heating as well as cooling and names the model that covers both.
Power
115V / 110V power
Both 12,000 BTU systems publish 115V~/60Hz/1P. Have a licensed electrician confirm the circuit. All 115V systems are together on the 110V mini split hub.
Delivery
What's in the box
- Indoor unit
- Outdoor unit
- Insulated copper line set
- Interconnecting cable
- Pipe wrap and wall sleeve
- Remote control
Exact line set length and kit contents vary by model; each product page lists its own. Systems ship free as freight on one pallet, so you are never waiting on a second box.
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Compare 9k / 23k / DUET
FAQ
Common questions about 12000 BTU mini splits
What size room is a 12000 BTU mini split for?
It depends on the model and your room conditions. Our 19 SEER2 12k is rated up to ~550 sq ft; our 17 SEER2 12k is rated up to ~280 sq ft. Always adjust for sun, ceilings, and insulation with the size finder.
What's the difference between the two Classic America 12k models?
19 SEER2 (MSC-12-HAC1): higher efficiency, up to 550 sq ft. 17 SEER2 (MSCR32-12CHSA1): 11,500 BTU cooling, up to 280 sq ft. Both are 115V heat pumps with WiFi + Alexa. Compare on the compare tool.
Are these 110V / 115V mini splits?
Yes. Both publish 115V~/60Hz/1P. See the 110V hub for every 115V SKU.
Do 12000 BTU mini splits heat in winter?
Yes — both are mini split heat pumps. See heating capacities on each product page and the heat pump hub.
Can I DIY-install a 12k mini split?
Mounting and line-set routing are common DIY steps; refrigerant and electrical work need a licensed HVAC pro. Delivery & installation · install planner.
Plan the install