SplitAtlas

Blueridge / XM3 All Climate Plus

Blueridge XM3 All Climate Plus 18k R-454B 208/230V 3-Zone Mini-Split

Certified capacity
19,000 BTU/h[2]
SEER2
25 SEER2[2]
Heating floor
-22 F[1]
Voltage
230 V[1]
Install path
Professional install

The Blueridge XM3 All Climate Plus 3-Zone 18k is the premium top tier, combining low-GWP R-454B with the range's strongest cold-climate heating. Certified nominal SEER2 is 25, EER2 15.0, HSPF2 10.4 across three heads on one 208/230V outdoor unit.

Cooling is rated 19,000 BTU, and heating holds essentially flat: 20,000 BTU at 47F, 20,000 at 17F, and 19,000 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.

3 zonesProfessional installCurrent

Refrigerant generation

R-454B - current-generation refrigerant

Need this installed?

Get installation quotes
Error Codes
Data completeness: 97%
Last sourced
Aug 29, 2026

SplitAtlas score

8.6 / 10

Methodology
Cooling efficiencyTop 10%

(25.0 SEER2) among 18k systems

Heating efficiencyAbove average

(10.4 HSPF2) among 18k systems

Cold-weather performanceAbove average

(95% heat retained at 5F; -22 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

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.

    Get a quote

Key ratings

Rated cooling

19,000BTU/hNon-Ducted Indoor Units[2]

Rated heating

20,000BTU/hNon-Ducted Indoor Units[2]

Buyer review snapshot

Best for / skip if

Best for

  • 3-zone projects in the 18k outdoor capacity class.
  • Top efficiency shortlists; SEER2 is 25.

Install difficulty

Professional flared-line install
  • Electrical: 230V; MCA 17.5 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

We could not verify a current retail price for this model. We could not find this exact model in stock at a retailer we work with when we last checked on 2026-08-29.

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

Warranty: 5 years parts and 7 years compressor as standard.

Review methodology

Model context

Install path
This is professional-install equipment; no verified current retail offer is attached.
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: -22 F.
Installation context
Multi-zone low-load behavior depends on the indoor heads and how many zones are calling at once.

Strengths

  • Holds full heat flat through 17F (20,000 BTU) and near it at 5F.
  • Top-tier efficiency: SEER2 25, EER2 15.0, HSPF2 10.4.
  • Current low-GWP R-454B, ENERGY STAR certified.
  • AHRI cold-climate designated across three zones.

Weaknesses

  • Premium tier carries the range's highest price.

Climate suitability

Minimum heating ambient
-22 F[1]
Rated heating at 5F
19,000 BTU/hNon-Ducted Indoor Units[2]
Rated heating at 17F
20,000 BTU/hNon-Ducted Indoor Units[2]
Rated heating at 47F
20,000 BTU/hNon-Ducted Indoor Units[2]

Specifications

Show
Manufacturer
Blueridge
Brand
Blueridge
Product line
XM3 All Climate Plus
Model number
BXM3A18UC0
Indoor unit model
Indoor heads are selected separately on a multi-zone system
Outdoor unit model
BXM3A18UC0
Number of zones
3
Max indoor units
3 units[1]
Rated cooling capacity
19,000 BTU/hNon-Ducted Indoor Units[2]
Rated heating capacity
20,000 BTU/hNon-Ducted Indoor Units[2]
Voltage
230 V[1]
MCA
17.5 A[1]
Maximum fuse or breaker size
20 A[1]
Breaker needed
not published
SEER2
25 SEER2Non-Ducted Indoor Units[2]
EER2
15 EER2Non-Ducted Indoor Units[2]
HSPF2 (Region 4)
10.4 HSPF2Non-Ducted Indoor Units[2]
HSPF2 (Region 5)
Certified per indoor-unit combination, not per outdoor unit
COP
not published
COP at 47F
not published
COP at 5F
2 COPNon-Ducted Indoor Units[2]
Minimum outdoor heating temperature
-22 F[1]
Minimum outdoor cooling temperature
-22 F[1]
Maximum outdoor temperature
122 F[1]
Indoor noise range
Indoor heads are selected separately on a multi-zone system
Outdoor noise rating
61.5 dBA[1]
Indoor weight
Indoor heads are selected separately on a multi-zone system
Outdoor weight
137.35 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
Indoor heads are selected separately on a multi-zone system
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
Indoor heads are selected separately on a multi-zone system
Energy Star status
ENERGY STAR certified[3]
AHRI certification number
216997617Non-Ducted Indoor Units[2]
Warranty
Standard: 5 yr parts / 7 yr compressor (limited warranty terms). 5-year parts, 7-year compressor warranty.
Install path
Professional install
Retail price
We could not find this exact model in stock at a retailer we work with when we last checked on 2026-08-29.
Available retailers
not published
Manual links
AHRI public detail 216997617, ENERGY STAR exact row 216997617, Blueridge XM3 All Climate Plus installation/user manual listed for BXM3A18UC0, Blueridge XM3 All Climate Plus official product/category evidence for BXM3A18UC0, HVACDirect exact-offer audit for BXM3A18UC0, Blueridge BXM3A18UC0 specification sheet listed by Alpine
Specification sheet
Blueridge BXM3A18UC0 specification sheet listed by Alpine
Last sourced date
Aug 29, 2026

Electrical requirements

Show
Voltage
230 V[1]
Voltage range
208/230V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
17.5 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
not published

Installation considerations

Show
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
Indoor heads are selected separately on a multi-zone system
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
Indoor heads are selected separately on a multi-zone system
Outdoor dimensions
37.24 x 31.89 x 16.14 in[1]
Indoor weight
Indoor heads are selected separately on a multi-zone system
Outdoor weight
137.35 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Blueridge XM3 All Climate Plus 3-Zone 18,000 BTU R-454B 208/230V (BXM3A18UC0) myself, or do I need a pro?
Blueridge XM3 All Climate Plus 3-Zone 18,000 BTU R-454B 208/230V (BXM3A18UC0) 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 XM3 All Climate Plus 3-Zone 18,000 BTU R-454B 208/230V (BXM3A18UC0) keep heating in a cold winter?
The manufacturer publishes 19,000 BTU/h of heating output at 5F. Rated heating operation extends down to -22 F. Certified heating efficiency is 10.4 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 XM3 All Climate Plus 3-Zone 18,000 BTU R-454B 208/230V (BXM3A18UC0) need?
Published electrical requirements: 230 V voltage, 17.5 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 196.8 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 Blueridge XM3 All Climate Plus 3-Zone 18,000 BTU R-454B 208/230V (BXM3A18UC0) carry?
The manufacturer publishes these warranty tiers: Standard: 5 yr parts / 7 yr compressor (limited warranty terms). Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.

Data sources

Show
  1. 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

  2. AHRI certificate #216997617 - 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

  3. ENERGY STAR record for AHRI #216997617 - search ENERGY STARSourced - Energy Star listing

    Covers performance_spec.energy_star_cold_climate, Energy Star status

  4. 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

  5. Alpine Home Air Products: Blueridge XM3 All Climate Plus official product/category evidence for BXM3A36UC0Sourced - manufacturer product page

    Covers Standard compressor warranty, Standard warranty conditions, Standard parts warranty

Last updated

Jul 29, 2026