Senville / AURA
Senville AURA 16k Four-Way Cassette R-454B 208/230V Mini-Split
The Senville AURA 18k outdoor with four-way cassette certifies as a 16,000 BTU cooling system with 20 SEER2, 12.3 HSPF2, and 17,000 BTU at 5F, so it is a heating-strong mid-capacity cassette.
1 zoneProfessional installCurrent
Refrigerant generation
R-454B - current-generation refrigerant
Paid link
$1,600 / Fresh price - checked Aug 2, 2026
Need this installed?
Get installation quotesData completeness: 90%
- Last sourced
- Aug 2, 2026
SplitAtlas score
8.3 / 10
Cooling efficiencyBelow average
(20.0 SEER2) among 18k systems
Heating efficiencyTop 10%
(12.3 HSPF2) among 18k systems
Cold-weather performanceAbove average
(89.5% heat retained at 5F; -22 F heating floor) among 18k systems
NoiseBottom quartile
(27.5 dBA indoor min / 57.5 dBA outdoor) among 18k systems
WarrantyBelow average
(5 yr parts / 10 yr compressor) across the catalogue
Feature setAbove average
(6 verified features) across the catalogue
Price-to-performanceBelow average
($1,600 median retail) among 18k systems
Documentation & partsBelow average
(5 manuals; spec sheet) across the catalogue
Not evaluated
- Installation accessibility — not applicable (professional install)N/A
professional install - DIY-accessibility not applicable
Key ratings
Buyer review snapshot
Install difficulty
Professional install
- Electrical: 230V; MCA 19 A; breaker/fuse 20 A.
- Line set: connection type not sourced; precharged 25 ft; included 16 ft; max 98.4 ft.
Alternatives
- Blueridge XS6 Max Efficiency 18,000 BTU R-454B 208/230V (BXS6A18WM0 / BXS6A18UC0)
9.0 score / 18k / SEER2 25.6 / -22 F heating floor / 230V
Exact destination at Alpine Home Air: $2,359.00, checked Jul 24, 2026
- ACiQ Standard 18,000 BTU R-454B 208/230V (ACIQ-18WS-HP230C / ACIQ-18ZS-HP230C)
8.8 score / 18k / SEER2 24 / -13 F heating floor / 230V
Exact destination at HVACDirect: $1,299.99, checked Jul 26, 2026
- ACiQ Extreme 18,000 BTU R-454B 208/230V (ACIQ-18W-HH-MD / ACIQ-18ZPL-HP230C)
8.8 score / 18k / SEER2 21.4 / -22 F heating floor / 230V
Exact destination at HVACDirect: $1,799.99, checked Jul 26, 2026
Availability and price context
- Verified current price: $1,599.99 at Senville; availability in_stock; checked Aug 2, 2026.
Source date
- Model data sourced
- Aug 2, 2026
- Page reviewed
- Aug 12, 2026
- Source-backed records
- 4
- Newest source retrieved
- Aug 2, 2026
Warranty tiers
Warranty: 5 years parts and 10 years compressor as standard.
Model context
- Structured ratings
- Certification: ENERGY STAR certified and AHRI cold-climate designated. Refrigerant: current low-GWP R-454B. Minimum heating ambient: -22 F.
Strengths
- Best Senville four-way choice when 9k is too small and the held 12k is not current.
- Strong 12.3 HSPF2 and cold-climate designation.
- Published indoor sound range bottoms at 27.5 dB.
- 20A max-fuse claim and full product table make it easier to scope than the one-way models.
Weaknesses
- Rated cooling is 16,000 BTU, not a full 18,000 BTU.
- SEER2 is lower than the smaller four-way and one-way Senville entries.
- Still missing verified refrigerant line-size and cooling-ambient claims in the captured sources.
Climate suitability
- Minimum heating ambient
- -22 F[1]
- Rated heating at 5F
- 17,000 BTU/h[3]
- Rated heating at 17F
- 14,900 BTU/h[3]
- Rated heating at 47F
- 19,000 BTU/h[3]
Specifications
ShowHide
- Manufacturer
- Senville
- Brand
- Senville
- Product line
- AURA
- Model number
- SENA-18HF-ICG indoor / SENA-18HF-OG outdoor
- Indoor unit model
- SENA-18HF-ICG
- Outdoor unit model
- SENA-18HF-OG
- Number of zones
- 1
- Max indoor units
- not published
- Rated cooling capacity
- 16,000 BTU/h[3]
- Rated heating capacity
- 19,000 BTU/h[3]
- Voltage
- 230 V[1]
- MCA
- 19 A[1]
- Maximum fuse or breaker size
- 20 A[1]
- Breaker needed
- not published
- SEER2
- 20 SEER2[3]
- EER2
- 12.5 EER2[3]
- HSPF2 (Region 4)
- 12.3 HSPF2[3]
- HSPF2 (Region 5)
- not published
- COP
- not published
- COP at 47F
- not published
- COP at 5F
- 1.9 COP[3]
- Minimum outdoor heating temperature
- -22 F[1]
- Minimum outdoor cooling temperature
- not published
- Maximum outdoor temperature
- not published
- Indoor noise range
- 48.0 / 44.5 / 41.0 / 27.5 dB[1]
- Outdoor noise rating
- 57.5 dBA[1]
- Indoor weight
- 35.27 lb[1]
- Outdoor weight
- 99.87 lb[1]
- Refrigerant
- R-454B[3]
- Refrigerant charge
- not published
- Manufacturer coverage
- not published
- Line-set size
- not published
- Included line-set length
- 16 ft[1]
- Maximum line-set length
- 98.4 ft[2]
- Max line set per indoor
- not published
- Maximum elevation difference
- 65.6 ft[2]
- Max height between indoor units
- not published
- Wi-Fi support
- supported[1]
- Energy Star status
- ENERGY STAR certified[4]
- AHRI certification number
- 215735306[3]
- Warranty
- Standard: 5 yr parts / 10 yr compressor (published warranty terms). 10-year compressor / 5-year parts
- Install path
- Professional install
- Retail price
- $1,599.99
- Available retailers
- Senville
- Manual links
- AHRI Active row 215735306, Senville four-way ceiling cassette installation manual, 18000 BTU Ceiling Cassette Air Conditioner - Heat Pump - SENA/18HF/ICSenville official product page, Senville four-way ceiling cassette service manual, 18000 BTU Ceiling Cassette Air Conditioner - Heat Pump - SENA/18HF/ICSenville official product-page specification table
- Specification sheet
- 18000 BTU Ceiling Cassette Air Conditioner - Heat Pump - SENA/18HF/ICSenville official product-page specification table
- Last sourced date
- Aug 2, 2026
Retail purchase context
Some retailer links may earn us a commission at no extra cost; paid relationships never change scores or recommendations. Affiliate disclosure
Paid link
Check price at Senville
$1,600 / Fresh price - checked Aug 2, 2026
Electrical requirements
ShowHide
Installation considerations
ShowHide
- Liquid line
- not published
- Suction line
- not published
- Line connection type
- not published
- Precharged length
- 25 ft[1]
- Included line-set length
- 16 ft[1]
- Maximum line-set length
- 98.4 ft[2]
- Max line set per indoor
- not published
- Max height between indoor units
- not published
- Indoor dimensions
- 22.44 x 22.44 x 9.65 in[1]
- Outdoor dimensions
- 35.04 x 13.46 x 26.50 in[1]
- Indoor weight
- 35.27 lb[1]
- Outdoor weight
- 99.87 lb[1]
- Drain size
- not published
Related systems and guides
- More Senville systems
- Pioneer Quantum Ultra 16k 230V
- Mitsubishi Electric 16.4k model
- Senville sibling model
- AURA 16.7k
- Guide library
- Mini split buying guide
- Single-zone vs multi-zone mini splits
- Troubleshooting
- Do mini splits work in cold weather?
- Senville mini split review: is Senville any good?
- The best cold-climate mini splits of 2026
- The best mini splits for heating of 2026
- Mini split heating capacity in the cold: what your unit actually delivers at 5F
- The mini split defrost cycle, explained
- The best DIY mini splits of 2026
- What "DIY mini split" actually means
- How to install a mini split (DIY overview)
- R-32 vs R-454B: the mini split refrigerant change explained
- Senville mini split not cooling
- Mini split not heating
- Mini split indoor unit freezing up
- Mini split not cooling
- Mini split remote not working
- Line sets
- Line-set covers
Frequently asked questions
- Can I install the Senville AURA Four-Way Ceiling Cassette 16,000 BTU R-454B 208/230V (SENA-18HF-ICG / SENA-18HF-OG) myself, or do I need a pro?
- Senville AURA Four-Way Ceiling Cassette 16,000 BTU R-454B 208/230V (SENA-18HF-ICG / SENA-18HF-OG) 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 Senville AURA Four-Way Ceiling Cassette 16,000 BTU R-454B 208/230V (SENA-18HF-ICG / SENA-18HF-OG) keep heating in a cold winter?
- The manufacturer publishes 17,000 BTU/h of heating output at 5F. Rated heating operation extends down to -22 F. Certified heating efficiency is 12.3 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 Senville AURA Four-Way Ceiling Cassette 16,000 BTU R-454B 208/230V (SENA-18HF-ICG / SENA-18HF-OG) need?
- Published electrical requirements: 230 V voltage, 19 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 98.4 ft, and the included line set comes pre-charged for 25 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 Senville AURA Four-Way Ceiling Cassette 16,000 BTU R-454B 208/230V (SENA-18HF-ICG / SENA-18HF-OG) carry?
- The manufacturer publishes these warranty tiers: Standard: 5 yr parts / 10 yr compressor (published warranty terms). Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.
Data sources
ShowHide
- Senville: 18000 BTU Ceiling Cassette Air Conditioner - Heat Pump - SENA/18HF/ICSenvilleSourced - manufacturer product page
Covers Frequency, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase, Voltage and more
- Senville: Senville four-way ceiling cassette installation manualSourced - manufacturer technical document
Covers Maximum elevation difference, Maximum line-set length
- Air-Conditioning, Heating, and Refrigeration Institute: AHRI Active form-factor row 215735306Sourced - 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 check for AHRI 218010994Sourced - Energy Star listing
Covers Energy Star status
Last updated
Aug 12, 2026