Blueridge / XM1 Core
Blueridge XM1 Core 18k R-454B 208/230V 3-Zone Mini-Split
The Blueridge XM1 Core 3-Zone 18k is the high-efficiency standard tier on low-GWP R-454B, and its certified nominal SEER2 of 25.1 is the highest in the XM1 Core line. It also posts EER2 14.0 and HSPF2 9.8 across three indoor heads on one 208/230V outdoor unit.
Cooling is rated 18,000 BTU; heating falls off from 19,000 at 47F to 16,000 at 17F and 13,500 at 5F. It is ENERGY STAR certified and AHRI cold-climate designated.
Sold through dealer quote; DIY-marketed, but flared connections require professional vacuum and startup.
Refrigerant generation
R-454B - current-generation refrigerant
Need this installed?
Get installation quotes- Last sourced
- Aug 29, 2026
SplitAtlas score
8.1 / 10
(25.1 SEER2) among 18k systems
(9.8 HSPF2) among 18k systems
(5F certified capacity: 71.1% of the 47F rating; -13 F heating floor) among 18k systems
(5 yr parts / 7 yr compressor) across the catalogue
(5 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
Best for / skip if
Best for
- 3-zone projects in the 18k outdoor capacity class.
- Top efficiency shortlists; SEER2 is 25.1.
Install difficulty
- Electrical: 230V; MCA 16 A; breaker/fuse 20 A.
- Line set: Flared line connections; max 196.8 ft.
- 3-zone condenser; indoor-head matching and branch layout are part of the job.
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
- Aug 29, 2026
- Page reviewed
- Jul 29, 2026
- Source-backed records
- 5
- Newest source retrieved
- Aug 29, 2026
Warranty tiers
- Base
- 5 yr parts / 7 yr compressor - limited warranty terms
The score uses Base. Additional published terms are shown for reference and not counted in the score.
Model context
- Install path
- This is professional-install equipment; price it with an installed quote.
- Structured ratings
- Certification: ENERGY STAR certified, ENERGY STAR cold-climate certified and AHRI cold-climate designated. Refrigerant: current low-GWP R-454B. Minimum heating ambient: -13 F.
Strengths
- SEER2 25.1 - the highest in the XM1 Core line.
- EER2 14.0, ENERGY STAR certified.
- AHRI cold-climate designated across three zones.
Weaknesses
- Heating falls off in deep cold (13,500 BTU at 5F).
- Not the cold-climate hold of the All Climate tiers.
Climate suitability
- Minimum heating ambient
- -13 F[1]
- Certified heating at 5F
- 13,500 BTU/hNon-Ducted Indoor Units[2]
- Rated heating at 17F
- 16,000 BTU/hNon-Ducted Indoor Units[2]
- Rated heating at 47F
- 19,000 BTU/hNon-Ducted Indoor Units[2]
Specifications
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- Manufacturer
- Blueridge
- Brand
- Blueridge
- Product line
- XM1 Core
- Model number
- BXM1A18SC0
- Indoor unit model
- Depends on the indoor units you choose
- Outdoor unit model
- BXM1A18SC0
- Number of zones
- 3
- Max indoor units
- 3 units[1]
- Rated cooling capacity
- 18,000 BTU/hNon-Ducted Indoor Units[2]
- Rated heating capacity
- 19,000 BTU/hNon-Ducted Indoor Units[2]
- Voltage
- 230 V[1]
- MCA
- 16 A[1]
- Maximum fuse or breaker size
- 20 A[1]
- Breaker needed
- not published
- SEER2
- 25.1 SEER2Non-Ducted Indoor Units[2]
- EER2
- 14 EER2Non-Ducted Indoor Units[2]
- HSPF2 (Region 4)
- 9.8 HSPF2Non-Ducted Indoor Units[2]
- HSPF2 (Region 5)
- Varies by indoor-unit combination
- COP
- not published
- COP at 47F
- not published
- COP at 5F
- 2.3 COPNon-Ducted Indoor Units[2]
- Minimum outdoor heating temperature
- -13 F[1]
- Minimum outdoor cooling temperature
- -13 F[1]
- Maximum outdoor temperature
- 122 F[1]
- Indoor noise range
- Depends on the indoor units you choose
- Outdoor noise rating
- not published
- Indoor weight
- Depends on the indoor units you choose
- Outdoor weight
- 100.53 lb[1]
- Refrigerant
- R-454B[2]
- Refrigerant charge
- not published
- Manufacturer coverage
- not published
- Line-set size
- (3) 1/4 in liquid / (3) 3/8 in suction
- Included line-set length
- Depends on the indoor units you choose
- Maximum line-set length
- 196.8 ft[1]
- Max line set per indoor
- 98.4 ft[1]
- Maximum elevation difference
- 49.2 ft[1]
- Max height between indoor units
- not published
- Wi-Fi support
- Depends on the indoor units you choose
- Energy Star status
- ENERGY STAR certified[3]
- AHRI certification number
- 216997602Non-Ducted Indoor Units[2]
- Warranty
- Base: 5 yr parts / 7 yr compressor (limited warranty terms). Score uses Base.. 5-year parts, 7-year compressor warranty.
- Install path
- Professional install
- Retail price
- Installed quote only
- Available retailers
- not published
- Manual links
- AHRI public detail 216997602, ENERGY STAR exact row 216997602, Blueridge XM1 Core installation/user manual listed for BXM1A18SC0, Blueridge XM1 Core official product/category evidence for BXM1A18SC0, Blueridge BXM1A18SC0 specification sheet listed by Alpine
- Specification sheet
- Blueridge BXM1A18SC0 specification sheet listed by Alpine
- Last sourced date
- Aug 29, 2026
Installation considerations
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- Liquid line
- (3) 1/4 in[1]
- Suction line
- (3) 3/8 in[1]
- Line connection type
- Flared line connections[1]
- Precharged length
- not published
- Included line-set length
- Depends on the indoor units you choose
- Maximum line-set length
- 196.8 ft[1]
- Max line set per indoor
- 98.4 ft[1]
- Max height between indoor units
- not published
- Indoor dimensions
- Depends on the indoor units you choose
- Outdoor dimensions
- 35.04 x 26.50 x 13.46 in[1]
- Indoor weight
- Depends on the indoor units you choose
- Outdoor weight
- 100.53 lb[1]
- Drain size
- not published
Related systems and guides
- More Blueridge systems
- Blueridge XM0 Basic 18k R-32 208/230V 2-Zone Mini-Split
- Blueridge XM2 All Climate 18k R-32 208/230V 2-Zone Mini-Split
- Blueridge DS3 DIY All Climate 18k R-454B 208/230V Mini-Split
- Blueridge XS1 Basic 18k R-32 208/230V Mini-Split
- Guide library
- Mini split buying guide
- Single-zone vs multi-zone mini splits
- Troubleshooting
- Do mini splits work in cold weather?
- Blueridge mini split review: is Blueridge any good?
- The best 18,000 BTU mini splits of 2026
- The best multi-zone mini splits of 2026
- The best 3-zone mini splits of 2026
- How to size a multi-zone mini split
- Not every multi-zone condenser lets you mix head types
- How much does a multi-zone mini split cost?
- The best cold-climate mini splits of 2026
- The best mini splits for heating of 2026
- One room won't heat or cool on a multi-zone mini split
- Mini split not heating
- Mini split indoor unit freezing up
- Mini split leaking water
- Mini split remote not working
- Line sets
- Line-set covers
Frequently asked questions
- Can I install the Blueridge XM1 Core 3-Zone 18,000 BTU R-454B 208/230V (BXM1A18SC0) myself, or do I need a pro?
- Blueridge XM1 Core 3-Zone 18,000 BTU R-454B 208/230V (BXM1A18SC0) 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 Blueridge XM1 Core 3-Zone 18,000 BTU R-454B 208/230V (BXM1A18SC0) keep heating in a cold winter?
- The AHRI/ENERGY STAR certification lists 13,500 BTU/h of heating capacity at 5F. Rated heating operation extends down to -13 F. Certified heating efficiency is 9.8 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 Blueridge XM1 Core 3-Zone 18,000 BTU R-454B 208/230V (BXM1A18SC0) need?
- Published electrical requirements: 230 V voltage, 16 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 from the outdoor unit to one indoor head is 98.4 ft. The combined piping limit across all heads is 196.8 ft. Measure the planned routing before ordering.
- What warranty does the Blueridge XM1 Core 3-Zone 18,000 BTU R-454B 208/230V (BXM1A18SC0) carry?
- The manufacturer publishes these warranty tiers: Base: 5 yr parts / 7 yr compressor (limited warranty terms). 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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- Blueridge / Alpine Home Air Products: Flared line set and professional startup evidenceSourced - manufacturer technical document
Covers brand.dealer_installation_policy, Frequency, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase and more
- AHRI certificate #216997602 - search the AHRI DirectorySourced - AHRI directory
Covers AHRI certification number, performance_spec.cold_climate_designation, Rated cooling capacity, COP at 5F, EER2, Rated heating capacity and more
- ENERGY STAR record for AHRI #216997602 - search ENERGY STARSourced - Energy Star listing
Covers performance_spec.energy_star_cold_climate, Energy Star status
- Blueridge / Alpine Home Air Products: Flared line set and professional startup evidenceSourced - manufacturer technical document
Covers system.diy_status, system.installation_type, system.sales_intent
- Alpine Home Air Products: Blueridge XM3 All Climate Plus official product/category evidence for BXM3A36UC0Sourced - manufacturer product page
Covers Base compressor warranty, Base warranty conditions, Base parts warranty
Last updated
Jul 29, 2026