SplitAtlas

Carrier / Performance 26

Carrier Performance 26 12k R-454B 115V Mini-Split

Certified capacity
12,000 BTU/h[2]
SEER2
23.5 SEER2[2]
Heating floor
-13 F[1]
Voltage
115 V[1]
Install path
Professional install

A 12,000 BTU Performance 26 on convenient 115V power and R-454B, rated 23.5 SEER2, 13 EER2, and 9.5 HSPF2. Heating runs 12,000 BTU at 47F, 10,000 BTU at 17F, and 7,700 BTU at 5F. It is ENERGY STAR certified but, unlike most of the Performance line, is not cold-climate designated.

1 zoneProfessional installCurrent

Refrigerant generation

R-454B - current-generation refrigerant

Error Codes
Carrier Performance 26 12,000 BTU R-454B 115V (45MAHAQ12XA1 / 37MARAQ12AA1)

Image: Carrier

Data completeness: 100%
Last sourced
Jul 27, 2026

SplitAtlas score

8.3 / 10

Methodology
Cooling efficiencyAbove average

(23.5 SEER2) among 12k systems

Heating efficiencyAbove average

(9.5 HSPF2) among 12k systems

Cold-weather performanceBelow average

(64.2% heat retained at 5F; -13 F heating floor) among 12k systems

NoiseAbove average

(-36.5 dBA indoor min / 52.5 dBA outdoor) among 12k systems

WarrantyAbove average

(10 yr parts / 10 yr compressor) across the catalogue

Feature setBelow average

(4 verified features) across the catalogue

Documentation & partsBelow average

(8 manuals; spec sheet) across the catalogue

Not evaluated

  • Installation accessibility — not applicable (professional install)N/A

    professional install - DIY-accessibility not applicable

  • Price-to-value — not evaluatedN/A

    quote-only - no retail price to evaluate

Key ratings

Rated cooling

12,000BTU/h[2]

Rated heating

12,000BTU/h[2]

Buyer review snapshot

Install difficulty

Professional install
  • Electrical: 115V; MCA 18 A; breaker/fuse 20 A.
  • Line set: connection type not sourced; precharged 24.6 ft; max 82.02 ft.

Alternatives

Availability and price context

We could not verify a current retail price for this model. We could not find a published consumer price for this model when we last checked on 2026-07-27.

Purchase channel policy

Carrier's ductless warranty excludes products purchased over the Internet; buyers should treat public online carts as outside the warranty-covered purchase channel.

Warranty consequence
Warranty coverage does not apply to any product purchased over the Internet.
Authorized channel
Licensed HVAC technician installation with defective parts returned to the distributor through a registered servicing dealer; not an internet purchase.

Any online offer for this brand should be treated as a warranty-risk warning, not a recommendation.

Compare online-purchase warranty rules by brand

Source: Carrier Corporation: CAC/BDP Limited Warranty Certificate - Limited Warranty for Ductless Split Units; retrieved Aug 15, 2026.

Source date

Model data sourced
Jul 27, 2026
Page reviewed
Jul 22, 2026
Source-backed records
5
Newest source retrieved
Jul 27, 2026

Warranty tiers

Warranty: 10 years parts and no separate compressor term published as standard.

Review methodology

Strengths

  • Strong 23.5 SEER2 and ENERGY STAR certification in a 115V unit that installs on a standard circuit.
  • Holds 10,000 BTU at 17F, so moderate-cold heating is genuinely capable.

Weaknesses

  • Not cold-climate certified, and output drops to 7,700 BTU at 5F, so deep-cold heat fades.
  • HSPF2 of 9.5 trails the cold-climate 230V Performance models on seasonal heating efficiency.

Climate suitability

Minimum heating ambient
-13 F[1]
Rated heating at 5F
7,700 BTU/h[2]
Rated heating at 17F
10,000 BTU/h[2]
Rated heating at 47F
12,000 BTU/h[2]

Specifications

Show
Manufacturer
Carrier
Brand
Carrier
Product line
Performance 26
Model number
45MAHAQ12XA1 indoor / 37MARAQ12AA1 outdoor
Indoor unit model
45MAHAQ12XA1
Outdoor unit model
37MARAQ12AA1
Number of zones
1
Max indoor units
not published
Rated cooling capacity
12,000 BTU/h[2]
Rated heating capacity
12,000 BTU/h[2]
Voltage
115 V[1]
MCA
18 A[1]
Maximum fuse or breaker size
20 A[1]
Breaker needed
not published
SEER2
23.5 SEER2[2]
EER2
13 EER2[2]
HSPF2 (Region 4)
9.5 HSPF2[2]
HSPF2 (Region 5)
not published
COP
not published
COP at 47F
3.7 COP[1]
COP at 5F
2.33 COP[2]
Minimum outdoor heating temperature
-13 F[1]
Minimum outdoor cooling temperature
-13 F[1]
Maximum outdoor temperature
122 F[1]
Indoor noise range
17.5-36.5 dB(A)[1]
Outdoor noise rating
52.5 dBA[1]
Indoor weight
23.15 lb[1]
Outdoor weight
64.6 lb[1]
Refrigerant
R-454B[1]
Refrigerant charge
33.44 oz[1]
Manufacturer coverage
not published
Line-set size
1/4 in liquid / 3/8 in suction
Included line-set length
Professional installations use separately selected line sets
Maximum line-set length
82.02 ft[1]
Max line set per indoor
not published
Maximum elevation difference
49.21 ft[1]
Max height between indoor units
not published
Wi-Fi support
supported[1]
Energy Star status
ENERGY STAR certified[3]
AHRI certification number
215323748[2]
Warranty
Standard: 10 yr parts / no separate compressor term (eligible timely registered residential installation). Consumer Choice Warranty: 10-year parts-only or 5-year parts plus 3-year labor for eligible timely registered residential installations; terms and participating dealer requirements apply.
Install path
Professional install
Retail price
We could not find a published consumer price for this model when we last checked on 2026-07-27.
Available retailers
not published
Manual links
AHRI public directory record 215323748, ENERGY STAR exact check 215323748, Carrier Performance 26 R-454B heat-pump installation manual, Performance 26 installation documentation locator, Carrier Performance 26 Mini Split Heat Pump, 45MAHAQ12XA1 & 37MARAQ12AA1 Carrier Performance 26 product data, HVACDirect exact Carrier offer check carrier-performance-26-12k-r454b-115v, AHRI Appendix M1 public detail 215323748
Specification sheet
AHRI Appendix M1 public detail 215323748
Last sourced date
Jul 27, 2026

Electrical requirements

Show
Voltage
115 V[1]
Voltage range
115V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
18 A[1]
Breaker needed
not published
Maximum breaker size
20 A[1]
Maximum fuse size
20 A[1]
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
14/3 stranded copper indoor-outdoor power/communication wiring[1]

Installation considerations

Show
Liquid line
1/4 in[1]
Suction line
3/8 in[1]
Line connection type
not published
Precharged length
24.6 ft[1]
Included line-set length
Professional installations use separately selected line sets
Maximum line-set length
82.02 ft[1]
Max line set per indoor
not published
Max height between indoor units
not published
Indoor dimensions
31.30 x 8.86 x 11.61 in[1]
Outdoor dimensions
30.12 x 11.93 x 21.85 in[1]
Indoor weight
23.15 lb[1]
Outdoor weight
64.6 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Carrier Performance 26 12,000 BTU R-454B 115V (45MAHAQ12XA1 / 37MARAQ12AA1) myself, or do I need a pro?
Carrier Performance 26 12,000 BTU R-454B 115V (45MAHAQ12XA1 / 37MARAQ12AA1) is built for professional installation: the line set must be flared, evacuated, and charged, which requires EPA-certified refrigerant handling. Installing it outside the manufacturer's requirements can void the warranty, so budget for a qualified HVAC installer.
Will the Carrier Performance 26 12,000 BTU R-454B 115V (45MAHAQ12XA1 / 37MARAQ12AA1) keep heating in a cold winter?
The manufacturer publishes 7,700 BTU/h of heating output at 5F. Rated heating operation extends down to -13 F. Certified heating efficiency is 9.5 HSPF2. Match those numbers against your climate's design temperature - in cold regions, output at 5F matters far more than the nameplate capacity measured at 47F.
What electrical circuit does the Carrier Performance 26 12,000 BTU R-454B 115V (45MAHAQ12XA1 / 37MARAQ12AA1) need?
Published electrical requirements: 115 V voltage, 18 A minimum circuit ampacity, and 20 A maximum breaker or fuse sizing. Confirm the final circuit against the unit nameplate and local code with a licensed electrician.
How far can the outdoor unit be from the indoor head?
The published maximum line-set length is 82.02 ft, and the included line set comes pre-charged for 24.6 ft. Longer runs than the included set allows typically mean added refrigerant and a pro visit, so measure the planned routing before ordering.
What warranty does the Carrier Performance 26 12,000 BTU R-454B 115V (45MAHAQ12XA1 / 37MARAQ12AA1) carry?
The manufacturer publishes these warranty tiers: Standard: 10 yr parts / no separate compressor term (eligible timely registered residential installation). Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.

Data sources

Show
  1. Carrier Corporation: 45MAHAQ09XA3 & 37MARAQ09AA3 Carrier Performance 26 product dataSourced - manufacturer technical document

    Covers Frequency, electrical_spec.guaranteed_voltage_range, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase and more

  2. AHRI Directory: AHRI public directory record 215323748Sourced - AHRI directory

    Covers AHRI certification number, performance_spec.cold_climate_designation, Rated cooling capacity, COP at 5F, EER2, Rated heating capacity and more

  3. ENERGY STAR Certified Products: ENERGY STAR record 3555729 for 37MARAQ12AA1 / 45MAHAQ12XA1Sourced - Energy Star listing

    Covers Energy Star status

  4. Air-Conditioning, Heating, and Refrigeration Institute: AHRI Appendix M1 public detail for 37MARAQ12AA1 / 45MAHAQ12XA1Sourced - AHRI directory

    Covers system.lifecycle_status

  5. Carrier Corporation: Performance 26 Mini Split Heat Pump manufacturer pageSourced - manufacturer product page

    Covers Legacy warranty value, Standard compressor warranty status, Standard warranty conditions, Standard parts warranty, Warranty notes

Last updated

Jul 22, 2026