Trane / ML Series R-410A
Trane ML 9k R-410A 115V Mini-Split
The Trane ML Series 9k carries the Trane name on a convenient 115V circuit - but buy it with eyes open. This is an R-410A system, and R-410A is the refrigerant being phased out industry-wide; AHRI already lists the ML Series as "Production Stopped" (still certified and sellable, but no longer manufactured).
It is ENERGY STAR certified at SEER2 20, rated to -4F. Think of it as a legacy/closeout unit, not a forward-looking purchase.
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Image: Trane
- Last sourced
- Jul 23, 2026
SplitAtlas score
7.8 / 10
(20.0 SEER2) among <=9k systems
(10.0 HSPF2) among <=9k systems
(17F certified capacity: 61.5% of the 47F rating; -4 F heating floor) among <=9k systems
(22 dBA indoor min / 50 dBA outdoor) among <=9k systems
(4 verified features) across the catalogue
(16 manuals; spec sheet; 10 error-code rows) 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
This is a professionally installed, quote-only system, so we can't score its price. Get an installed quote to compare real cost.
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Key ratings
Best-fit use cases
A buyer who specifically wants the Trane name on 115V and is getting it at a genuine closeout price, understanding it is a legacy R-410A system near the end of its production life.
Buyer review snapshot
Install difficulty
- Electrical: 115V; MCA 12 A; breaker/fuse 15 A.
- Line set: connection type not sourced; max 65 ft.
Alternatives
- Blueridge XS6 Max Efficiency 9,000 BTU R-454B 208/230V (BXS6A09WM0 / BXS6A09UC0)
8.9 score / 9k / SEER2 33.3 / -22 F heating floor / 230V
Exact destination at Alpine Home Air: $1,689.00, checked Jul 24, 2026
- Senville ELITE 9,000 BTU R-454B 208/230V (SENE-09EL-IHH / SENE-09EL-OH)
8.9 score / 9k / SEER2 33.3 / -22 F heating floor / 187-253V
Exact destination at Senville: $1,599.99, checked Jul 24, 2026
- ACiQ Extreme 9,000 BTU R-454B 208/230V (ACIQ-09W-HH-MD / ACIQ-09ZPL-HP230C)
8.9 score / 9k / SEER2 27.4 / -22 F heating floor / 230V
Exact destination at HVACDirect: $1,499.99, checked Jul 26, 2026
Availability and price context
This system needs a professional install, so its real price is an installed quote that depends on your home. We don't link to a listing for this exact model; get installation quotes to price it.
Source date
- Model data sourced
- Jul 23, 2026
- Page reviewed
- Jul 23, 2026
- Source-backed records
- 4
- Newest source retrieved
- Jul 23, 2026
Strengths
- The Trane name and dealer network, on a standard 115V circuit.
- ENERGY STAR certified at SEER2 20 with HSPF2 10 - solid mainstream efficiency.
Weaknesses
- R-410A refrigerant on a "Production Stopped" line - the industry has moved to R-454B/R-32, and R-410A service refrigerant will get scarcer and pricier over the unit's life.
- Rated only to -4F; professional installation required.
- A closeout-era product - newer R-454B units from Bosch/Carrier/Midea offer better long-term footing.
Climate suitability
- Minimum heating ambient
- -4 F[1]
- Certified heating at 5F
- not published
- Maximum heating at 5F (manufacturer)
- 5,990 BTU/h[1]
- Rated heating at 17F
- 6,700 BTU/h[2]
- Rated heating at 47F
- 10,900 BTU/h[2]
Specifications
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- Manufacturer
- Trane
- Brand
- Trane
- Product line
- ML Series R-410A
- Model number
- NTXWMT09A111AA indoor / NTXSMT09A111AA outdoor
- Indoor unit model
- NTXWMT09A111AA
- Outdoor unit model
- NTXSMT09A111AA
- Number of zones
- 1
- Max indoor units
- not published
- Rated cooling capacity
- 9,000 BTU/h[2]
- Rated heating capacity
- 10,900 BTU/h[2]
- Voltage
- 115 V[1]
- MCA
- 12 A[1]
- Maximum fuse or breaker size
- 15 A[1]
- Breaker needed
- not published
- SEER2
- 20 SEER2[2]
- EER2
- 12 EER2[2]
- HSPF2 (Region 4)
- 10 HSPF2[2]
- HSPF2 (Region 5)
- not published
- COP
- not published
- COP at 47F
- 3.55 COP[1]
- COP at 5F
- not published
- Minimum outdoor heating temperature
- -4 F[1]
- Minimum outdoor cooling temperature
- 14 F[1]
- Maximum outdoor temperature
- 115 F[1]
- Indoor noise range
- 22-43 dB(A)[1]
- Outdoor noise rating
- 50 dBA[1]
- Indoor weight
- 22 lb[1]
- Outdoor weight
- 73 lb[1]
- Refrigerant
- R-410A[1]
- Refrigerant charge
- 28 oz[1]
- Manufacturer coverage
- not published
- Line-set size
- 1/4 in liquid / 3/8 in suction
- Included line-set length
- Trane/METUS professional-install submittals publish refrigerant line sizes, precharged length, and maximum piping limits, but no included line set.
- Maximum line-set length
- 65 ft[1]
- Max line set per indoor
- not published
- Maximum elevation difference
- 40 ft[1]
- Max height between indoor units
- not published
- Wi-Fi support
- supported[1]
- Energy Star status
- ENERGY STAR certified[3]
- AHRI certification number
- 202397887[2]
- Warranty
- not published
- Install path
- Professional install
- Retail price
- Installed quote only
- Available retailers
- not published
- Manual links
- AHRI certificate 202397887, AHRI public detail 202397887, ENERGY STAR exact row 4467511, Trane NTXWMT09-12A111A installation manual, Trane 18 SEER Wall Mount ML manufacturer page, Trane Single-Zone Heat Pump ML manufacturer page, Trane warranty and registration page, Trane NTXSMT09-12A111AA outdoor service manual, Trane NTXWMT-A111A/B indoor service manual, Trane ML 9,000 BTU extracted submittal text fixture source, Trane ML 9,000 BTU submittal NTXWMT09A111AA / NTXSMT09A111AA, Trane NTXSMT09-12A111AA technical databook, Trane NTXWMT09-12A111AA technical databook, Trane NTXWMT09-12A111A operation manual
- Specification sheet
- Trane ML 9,000 BTU extracted submittal text fixture source
- Last sourced date
- Jul 23, 2026
Installation considerations
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- Liquid line
- 1/4 in[1]
- Suction line
- 3/8 in[1]
- Line connection type
- not published
- Precharged length
- not published
- Included line-set length
- Trane/METUS professional-install submittals publish refrigerant line sizes, precharged length, and maximum piping limits, but no included line set.
- Maximum line-set length
- 65 ft[1]
- Max line set per indoor
- not published
- Max height between indoor units
- not published
- Indoor dimensions
- 31-7/16 x 9-1/8 x 11-5/8 in[1]
- Outdoor dimensions
- 31-1/2 x 11-1/4 x 21-5/8 in[1]
- Indoor weight
- 22 lb[1]
- Outdoor weight
- 73 lb[1]
- Drain size
- 5/8 in[1]
Related systems and guides
- More Trane systems
- Senville LETO 9k R-454B 208/230V Mini-Split
- Blueridge XS1 Basic 9.1k R-32 115V Mini-Split
- Trane ML 12k R-410A 115V Mini-Split
- Senville LETO 9k R-454B 115V Mini-Split
- Guide library
- Mini split buying guide
- Single-zone vs multi-zone mini splits
- Troubleshooting
- The best 9,000 BTU mini splits of 2026
- The best DIY mini splits of 2026
- What "DIY mini split" actually means
- How to install a mini split (DIY overview)
- Mini split for a hot upstairs
- Mini splits for an ADU or tiny home
- Can you use a thermostat with a mini split? (Nest and beyond)
- Do mini splits add home value?
- Do mini splits use gas or electric?
- Mini split remote not working
- Mini split Wi-Fi not connecting
- Mini split leaking water
- Line sets
- Line-set covers
Frequently asked questions
- Can I install the Trane ML Series 9,000 BTU R-410A 115V (NTXWMT09A111AA / NTXSMT09A111AA) myself, or do I need a pro?
- Trane ML Series 9,000 BTU R-410A 115V (NTXWMT09A111AA / NTXSMT09A111AA) 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 Trane ML Series 9,000 BTU R-410A 115V (NTXWMT09A111AA / NTXSMT09A111AA) keep heating in a cold winter?
- Rated heating operation extends down to -4 F. Certified heating efficiency is 10 HSPF2. Match that published heating floor against your climate's design temperature - below the low-ambient rating, output can fall off or the system can pause to protect itself.
- What electrical circuit does the Trane ML Series 9,000 BTU R-410A 115V (NTXWMT09A111AA / NTXSMT09A111AA) need?
- Published electrical requirements: 115 V voltage, 12 A minimum circuit ampacity, and 15 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 65 ft. Measure the planned routing before ordering.
Data sources
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- Mitsubishi Electric Trane HVAC US LLC: NTXWMT09A111AA & NTXSMT09A111AA Trane ML Series submittalSourced - manufacturer technical document
Covers Frequency, electrical_spec.guaranteed_voltage_range, electrical_spec.indoor_mca_amps, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity and more
- Air-Conditioning, Heating, and Refrigeration Institute: AHRI public detail 202397887 for NTXWMT09A111AA / NTXSMT09A111AASourced - AHRI directory
Covers AHRI certification number, Rated cooling capacity, EER2, Rated heating capacity, HSPF2 (Region 4), Rated heating at 17F and more
- U.S. Environmental Protection Agency ENERGY STAR: ENERGY STAR exact row 4467511 for NTXWMT09A111AA / NTXSMT09A111AASourced - Energy Star listing
Covers Energy Star status
- Trane Residential: Single-Zone Heat Pump ML manufacturer pageSourced - manufacturer product page
Covers system.lifecycle_status
Last updated
Jul 23, 2026