Carrier Performance 38MARB 12,000 BTU
Single-Zone
$2,300

Carrier

Carrier Performance 38MARB 12,000 BTU

Carrier's Performance-series single zone is another entry in the Midea rebadge web — it comes out of the Carrier-Midea joint venture, not a Carrier factory — but it's arguably the best-executed version of that hardware. The official submittal sheet backs up the cold-climate marketing: with the 40MAHB high-wall head it delivers its full 12,000 BTU maximum heating output at 5F and keeps operating down to -22F, with a factory base-pan heater and crankcase heater included rather than tacked on. Efficiency is genuinely high at 23.6 SEER2 and roughly 11 HSPF2 (13.0 HSPF legacy). The catch is the Carrier tax: you're paying a third more than the equivalent Midea for dealer-channel distribution, and r/hvacadvice folks are split on whether the badge plus a stronger local service network justifies it. If a trusted Carrier dealer is quoting you fairly, it's a legitimately capable cold-climate unit; if not, the same guts exist for less.

Price
$2,300
Size
12k BTU
Heats To
-22°F
Best For
Buyers who want dealer-installed, name-brand cold-climate performance with a strong local service network behind it.

Specifications

Low-Ambient Heating
heats to -22°F
Capacity
12k BTU
SEER2 (cooling)
23.6
HSPF2 (heating)
11
Zones
Single zone
Voltage
230V
WiFi Control
Optional / none
Type
Single-Zone
Coverage
~550 sq ft
Install
Dealer-installed in most cases since Carrier sells through its distributor network; requires a 208/230V circuit, and the outdoor unit ships with factory base-pan and crankcase heaters for cold-climate mounting.
Warranty
10-year parts and compressor limited warranty with timely registration (5 years unregistered)
Model
38MARBQ12AA3 / 40MAHBQ12XA3

Highlights

100% heating capacity at 5FOperates down to -22F10-year registered warranty

Pros

  • Maintains its full rated 12,000 BTU heating output at 5F per Carrier's submittal data
  • Rated heating operation all the way down to -22F
  • Strong 23.6 SEER2 efficiency with a 14 EER for hot afternoons
  • Factory-installed base-pan and crankcase heaters, not optional add-ons
  • Huge nationwide dealer and parts network compared to import brands
  • Energy Star certified and AHRI-listed pairing

Cons

  • Built by the Carrier-Midea joint venture, so you pay a big premium over identical Midea hardware
  • Dealer-channel pricing makes total installed cost hard to compare shop
  • Wi-Fi control requires an optional adapter instead of coming built in
  • Still on R-410A while Carrier's newest ductless line has moved to R-454B
  • Warranty drops to 5 years if you miss the registration window

Compare the Carrier Performance 38MARB 12,000 BTU

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