Blueridge / DM1 DIY
Blueridge DM1 DIY 18k R-454B 208/230V 3-Zone Mini-Split
The Blueridge DM1 DIY 3-Zone 18k is the brand's DIY-leaning line on low-GWP R-454B refrigerant, running three indoor heads off one 208/230V outdoor unit. Efficiency jumps well above the Basic tier: certified nominal SEER2 23.9, EER2 13.0, HSPF2 10.0.
Cooling is rated 18,000 BTU; heating falls off from 18,000 at 47F to 13,400 at 17F and 13,300 at 5F. It is ENERGY STAR certified and AHRI cold-climate designated.
Despite the DIY marketing, its flared connections require professional vacuum and startup - not a true no-vacuum precharged kit like MRCOOL.
3 zonesDIY installCurrent
Refrigerant generation
R-454B - current-generation refrigerant
Need this installed?
Get installation quotesData completeness: 92%
- Last sourced
- Jul 29, 2026
SplitAtlas score
8.2 / 10
Cooling efficiencyTop quartile
(23.9 SEER2) among 18k systems
Heating efficiencyBelow average
(10.0 HSPF2) among 18k systems
Cold-weather performanceBelow average
(5F certified capacity: 73.9% of the 47F rating; -13 F heating floor) among 18k systems
WarrantyBelow average
(5 yr parts / 7 yr compressor) across the catalogue
Feature setAbove average
(5 verified features) across the catalogue
Documentation & partsBelow average
(6 manuals; spec sheet) across the catalogue
Key ratings
Buyer review snapshot
Best for / skip if
Best for
- 3-zone projects in the 18k outdoor capacity class.
- High-efficiency shortlists; SEER2 is 23.9.
Install difficulty
DIY multi-zone with planning load
- Electrical: 230V; MCA 16 A; breaker/fuse 20 A.
- Line set: Quick-connect line connections; precharged 73.8 ft; max 196.8 ft.
- 3-zone condenser; indoor-head matching and branch layout are part of the job.
Availability and price context
We don't link to a listing for this exact model yet. If you buy it elsewhere, match the indoor and outdoor model numbers and the kit contents to this page.
Source date
- Model data sourced
- Jul 29, 2026
- Page reviewed
- Jul 29, 2026
- Source-backed records
- 3
- Newest source retrieved
- Jul 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
- 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.
- Installation context
- Multi-zone low-load behavior depends on the indoor heads and how many zones are calling at once.
Strengths
- High SEER2 23.9 efficiency, far above the Basic tier.
- Three efficient zones from one condenser.
Weaknesses
- DIY-marketed, but flared connections require professional vacuum and startup - not a full DIY kit.
- Heating falls off notably in the cold (13,400 BTU at 17F).
Climate suitability
- Minimum heating ambient
- -13 F[1]
- Certified heating at 5F
- 13,300 BTU/hNon-Ducted Indoor Units[2]
- Rated heating at 17F
- 13,400 BTU/hNon-Ducted Indoor Units[2]
- Rated heating at 47F
- 18,000 BTU/hNon-Ducted Indoor Units[2]
Specifications
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- Manufacturer
- Blueridge
- Brand
- Blueridge
- Product line
- DM1 DIY
- Model number
- BDM1A18SC0
- Indoor unit model
- Depends on the indoor units you choose
- Outdoor unit model
- BDM1A18SC0
- Number of zones
- 3
- Max indoor units
- 3 units[1]
- Rated cooling capacity
- 18,000 BTU/hNon-Ducted Indoor Units[2]
- Rated heating capacity
- 18,000 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
- 23.9 SEER2Non-Ducted Indoor Units[2]
- EER2
- 13 EER2Non-Ducted Indoor Units[2]
- HSPF2 (Region 4)
- 10 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
- 60 dBA[1]
- Indoor weight
- Depends on the indoor units you choose
- Outdoor weight
- not published
- 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
- 216997632Non-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
- DIY install
- Retail price
- No current listing
- Available retailers
- not published
- Manual links
- AHRI public detail 216997632, ENERGY STAR exact row 216997632, Blueridge DM1 DIY installation/user manual listed for BDM1A18SC0, Blueridge DM1 DIY official product/category evidence for BDM1A18SC0, Blueridge BDM1A18SC0 specification sheet listed by Alpine
- Specification sheet
- Blueridge BDM1A18SC0 specification sheet listed by Alpine
- Last sourced date
- Jul 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
- Quick-connect line connections[1]
- Precharged length
- 73.8 ft[1]
- 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
- not published
- Indoor weight
- Depends on the indoor units you choose
- Outdoor weight
- not published
- Drain size
- not published
Related systems and guides
- More Blueridge systems
- ACiQ Standard 18k R-454B 208/230V Mini-Split
- Blueridge DS2 DIY High Efficiency 18k R-454B 208/230V Mini-Split
- Blueridge DS1 DIY Core 17k R-454B 208/230V Mini-Split
- ACiQ Standard 18k R-454B 208/230V 2-Zone Mini-Split
- Guide library
- Mini split buying guide
- Single-zone vs multi-zone mini splits
- Troubleshooting
- Do mini splits work in cold weather?
- DIY vs professional mini split installation
- 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 making loud noise
- Your mini split is showing a refrigerant leak code
- Line sets
- Line-set covers
Frequently asked questions
- Can I install the Blueridge DM1 DIY 3-Zone 18,000 BTU R-454B 208/230V (BDM1A18SC0) myself, or do I need a pro?
- Blueridge DM1 DIY 3-Zone 18,000 BTU R-454B 208/230V (BDM1A18SC0) is sold as a DIY-installable system. The electrical circuit is the part that is not DIY: plan on a licensed electrician for the dedicated circuit, and check whether your local permit office requires a permit for the install.
- Will the Blueridge DM1 DIY 3-Zone 18,000 BTU R-454B 208/230V (BDM1A18SC0) keep heating in a cold winter?
- The AHRI/ENERGY STAR certification lists 13,300 BTU/h of heating capacity at 5F. Rated heating operation extends down to -13 F. Certified heating efficiency is 10 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 DM1 DIY 3-Zone 18,000 BTU R-454B 208/230V (BDM1A18SC0) 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. The outdoor unit's factory charge covers up to 73.8 ft of line; longer runs need added refrigerant. Measure the planned routing before ordering.
- What warranty does the Blueridge DM1 DIY 3-Zone 18,000 BTU R-454B 208/230V (BDM1A18SC0) 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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- Alpine Home Air Products: Blueridge XM3 All Climate Plus official product/category evidence for BXM3A36UC0Sourced - manufacturer product page
Covers brand.dealer_installation_policy, Frequency, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase and more
- Air-Conditioning, Heating, and Refrigeration Institute: AHRI public detail 216997632Sourced - 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: ENERGY STAR exact row 216997632Sourced - Energy Star listing
Covers performance_spec.energy_star_cold_climate, Energy Star status
Last updated
Jul 29, 2026