Mitsubishi Electric / M-Series MFZ Floor-Mounted Console
Mitsubishi M-Series MFZ Floor-Mounted Console 15k Floor Console 208/230V Mini-Split
The M-Series MFZ Floor-Mounted Console 15k is Mitsubishi's low-wall alternative to a wall head: a 15,000 BTU floor console for rooms where air should wash across the lower part of the space instead of dropping from high on a wall. The standard outdoor unit favors efficiency and moderate-climate balance, with SEER2 20.1, EER2 13, HSPF2 10.5, and 9,800 BTU at 5F.
The catch is placement. A floor console is easier to live with in rooms with low windows or sloped ceilings, but it still claims floor/wall space and needs furniture kept clear of the discharge.
Refrigerant generation
R-454B - current-generation refrigerant
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- Last sourced
- Aug 5, 2026
SplitAtlas score
7.9 / 10
(20.1 SEER2) among 18k systems
(10.5 HSPF2) among 18k systems
(5F certified capacity: 54.4% of the 47F rating; -4 F heating floor) among 18k systems
(28 dBA indoor min / 51 dBA outdoor) among 18k systems
(5 yr parts / 7 yr compressor) across the catalogue
(3 verified features) across the catalogue
(6 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
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
Buyer review snapshot
Install difficulty
- Electrical: 230V; MCA 17 A; breaker/fuse 29 A maximum (calculated recommendation: 25 A is the nearest standard breaker size at or below that maximum).
- Line set: connection type not sourced; precharged 25 ft; max 65 ft.
Alternatives
- Blueridge XS6 Max Efficiency 12,000 BTU R-454B 208/230V (BXS6A12WM0 / BXS6A12UC0)
9.0 score / 12k / SEER2 29.4 / -22 F heating floor / 230V
Exact destination at Alpine Home Air: $1,979.00, checked Jul 24, 2026
- Senville ELITE 12,000 BTU R-454B 208/230V (SENE-12EL-IHH / SENE-12EL-OH)
8.9 score / 12k / SEER2 29.4 / -22 F heating floor / 187-253V
Exact destination at Senville: $1,699.99, checked Jul 24, 2026
- ACiQ Extreme 12,000 BTU R-454B 208/230V (ACIQ-12W-HH-MD / ACIQ-12ZPL-HP230C)
8.9 score / 12k / SEER2 25.4 / -22 F heating floor / 230V
Exact destination at HVACDirect: $1,649.99, checked Jul 26, 2026
Availability and price context
This Mitsubishi Electric system is sold through dealers, so its price comes as an installed quote that depends on your home. Get installation quotes to price it.
Source date
- Model data sourced
- Aug 5, 2026
- Page reviewed
- Aug 2, 2026
- Source-backed records
- 3
- Newest source retrieved
- Aug 5, 2026
Warranty tiers
- Base
- 5 yr parts / 7 yr compressor - licensed HVAC contractor installation
The score uses Base. Additional published terms are shown for reference and not counted in the score.
Model context
- Mitsubishi dealer channel
- Mitsubishi Electric equipment is sold through its dealer network; installed price depends on the local contractor.
- Install path
- This is professional-install equipment; price it with an installed quote.
Strengths
- 20.1 SEER2 / 13 EER2 / 10.5 HSPF2 certified efficiency.
- 15,000 BTU low-wall comfort where a high wall head is awkward.
- 10,900 BTU at 17F and 9,800 BTU at 5F give real heating numbers to size against.
Weaknesses
- Not AHRI cold-climate designated; 5F heat falls to 9,800 BTU, so size carefully in northern winters.
- Takes low-wall floor space and can be blocked by furniture more easily than a ceiling cassette.
Climate suitability
- Minimum heating ambient
- -4 F[1]
- Certified heating at 5F
- 9,800 BTU/h[2]
- Maximum heating at 5F (manufacturer)
- 9,800 BTU/h[1]
- Rated heating at 17F
- 10,900 BTU/h[2]
- Rated heating at 47F
- 18,000 BTU/h[2]
Specifications
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- Manufacturer
- Mitsubishi Electric
- Brand
- Mitsubishi Electric
- Product line
- M-Series MFZ Floor-Mounted Console
- Model number
- MFZ-KX15NL-U1 indoor / SUZ-AA15NL-U1 outdoor
- Indoor unit model
- MFZ-KX15NL-U1
- Outdoor unit model
- SUZ-AA15NL-U1
- Number of zones
- 1
- Max indoor units
- not published
- Rated cooling capacity
- 15,000 BTU/h[2]
- Rated heating capacity
- 18,000 BTU/h[2]
- Voltage
- 230 V[1]
- MCA
- 17 A[1]
- Maximum fuse or breaker size
- 29 A[1]
Calculated recommendation: 25 A is the nearest standard breaker size at or below the published 29 A maximum.
- Breaker needed
- not published
- SEER2
- 20.1 SEER2[2]
- EER2
- 13 EER2[2]
- HSPF2 (Region 4)
- 10.5 HSPF2[2]
- HSPF2 (Region 5)
- not published
- COP
- not published
- COP at 47F
- 3.8 COP[1]
- COP at 5F
- 3 COP[2]
- Minimum outdoor heating temperature
- -4 F[1]
- Minimum outdoor cooling temperature
- 14 F[1]
- Maximum outdoor temperature
- 115 F[1]
- Indoor noise range
- cooling 28 , 33 , 38 , 43 , 47; heating 29 , 35 , 40 , 45 , 49[1]
- Outdoor noise rating
- 51 dBA[1]
- Indoor weight
- 33 lb[1]
- Outdoor weight
- 81 lb[1]
- Refrigerant
- R-454B[1]
- Refrigerant charge
- not published
- Manufacturer coverage
- not published
- Line-set size
- 1/4 in liquid / 1/2 in suction
- Included line-set length
- Mitsubishi submittals publish line-size and maximum/precharged piping data; the installing contractor supplies the 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[2]
- AHRI certification number
- 215734902[2]
- Warranty
- Base: 5 yr parts / 7 yr compressor (licensed HVAC contractor installation). Score uses Base.. METUS residential warranty terms list a standard 5-year parts and 7-year compressor term when installed by a licensed HVAC contractor, with enhanced registered coverage available under program conditions.
- Install path
- Professional install
- Retail price
- Installed quote only
- Available retailers
- not published
- Manual links
- AHRI public detail 215734902, OBH944B.pdf, MitsubishiPro product record MFZ-KX15NL, MitsubishiPro product record SUZ-AA15NL, MFZ-KX15NL / SUZ-AA15NL Mitsubishi Electric submittal, METUS Residential M-Series, P-Series and SMART MULTI Limited Warranty Statement
- Specification sheet
- MFZ-KX15NL / SUZ-AA15NL Mitsubishi Electric submittal
- Last sourced date
- Aug 5, 2026
Electrical requirements
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- Voltage
- 230 V[1]
- Voltage range
- not published
- Phase
- 1[1]
- Frequency
- 60 Hz[1]
- MCA
- 17 A[1]
- Breaker needed
- not published
- Maximum breaker size
- 29 A[1]
Calculated recommendation: 25 A is the nearest standard breaker size at or below the published 29 A maximum.
- Maximum fuse size
- 29 A[1]
Calculated recommendation: 25 A is the nearest standard fuse size at or below the published 29 A maximum.
- Maximum cooling current
- not published
- Maximum heating current
- not published
- Manufacturer wire notes
- 14 AWG indoor-outdoor[1]
Installation considerations
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- Liquid line
- 1/4 in[1]
- Suction line
- 1/2 in[1]
- Line connection type
- not published
- Precharged length
- 25 ft[1]
- Included line-set length
- Mitsubishi submittals publish line-size and maximum/precharged piping data; the installing contractor supplies the 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
- 29-1/2 x 8-7/16 x 23-5/8 in[1]
- Outdoor dimensions
- 31-1/2 x 11-1/4 x 21-5/8 in[1]
- Indoor weight
- 33 lb[1]
- Outdoor weight
- 81 lb[1]
- Drain size
- not published
Related systems and guides
- More Mitsubishi Electric systems
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Frequently asked questions
- Can I install the Mitsubishi Electric M-Series MFZ Floor-Mounted Console 15,000 BTU R-454B 208/230V (MFZ-KX15NL / SUZ-AA15NL) myself, or do I need a pro?
- Mitsubishi Electric M-Series MFZ Floor-Mounted Console 15,000 BTU R-454B 208/230V (MFZ-KX15NL / SUZ-AA15NL) 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 Mitsubishi Electric M-Series MFZ Floor-Mounted Console 15,000 BTU R-454B 208/230V (MFZ-KX15NL / SUZ-AA15NL) keep heating in a cold winter?
- The AHRI/ENERGY STAR certification lists 9,800 BTU/h of heating capacity at 5F. Rated heating operation extends down to -4 F. Certified heating efficiency is 10.5 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 Mitsubishi Electric M-Series MFZ Floor-Mounted Console 15,000 BTU R-454B 208/230V (MFZ-KX15NL / SUZ-AA15NL) need?
- Published electrical requirements: 230 V voltage, 17 A minimum circuit ampacity, and 29 A maximum breaker or fuse sizing. Calculated recommendation: 25 A is the nearest standard breaker size at or below the published 29 A maximum. 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. The outdoor unit's factory charge covers up to 25 ft of line; longer runs need added refrigerant. Measure the planned routing before ordering.
- What warranty does the Mitsubishi Electric M-Series MFZ Floor-Mounted Console 15,000 BTU R-454B 208/230V (MFZ-KX15NL / SUZ-AA15NL) carry?
- The manufacturer publishes these warranty tiers: Base: 5 yr parts / 7 yr compressor (licensed HVAC contractor installation). Score uses Base.. Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.
Data sources
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- Mitsubishi Electric Trane HVAC US LLC: MFZ-KX15NL / SUZ-AA15NL Mitsubishi Electric 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 215734902Sourced - AHRI directory
Covers AHRI certification number, performance_spec.cold_climate_designation, Rated cooling capacity, COP at 5F, EER2, Energy Star status and more
- Mitsubishi Electric Trane HVAC US LLC: METUS Residential M-Series, P-Series and SMART MULTI Limited Warranty StatementSourced - secondary source
Covers Legacy compressor warranty value, Legacy warranty value, Base compressor warranty, Base warranty conditions, Base parts warranty, Warranty notes
Last updated
Aug 2, 2026