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Perfect Aire / Perfect Aire Quick Connect

Perfect Aire Quick Connect 18k R-454B 230V Mini-Split

Certified capacity
18,000 BTU/h[3]
SEER2
21 SEER2[3]
Heating floor
-4 F[1]
Voltage
230 V[1]
Install path
DIY install

The Quick Connect 18k is the DIY 1.5-ton head, on 230V and R-454B at 21 SEER2, a strong 12.95 EER2, and 10 HSPF2. Its defining trait is a dead-flat heating curve: 18,000 BTU at 47F, 17F, and 5F alike, so capacity never sags in the cold. It is ENERGY STAR certified and cold-climate designated, with precharged quick-connect linesets for self-installation.

1 zoneDIY installCurrent

Refrigerant generation

R-454B - current-generation refrigerant

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Error Codes
Perfect Aire Quick Connect 18,000 BTU R-454B 230V (4PAMSHQCW18 / 4PAMSHQCO18)

Image: Perfect Aire

Data completeness: 100%
Last sourced
Aug 17, 2026

SplitAtlas score

8.6 / 10

Methodology
Cooling efficiencyBelow average

(21.0 SEER2) among 18k systems

Heating efficiencyBelow average

(10.0 HSPF2) among 18k systems

Cold-weather performanceTop quartile

(5F certified capacity: 100% of the 47F rating; -4 F heating floor) among 18k systems

WarrantyBelow average

(7 yr parts / 7 yr compressor) across the catalogue

Installation accessibilityAbove average

(DIY-marketed; 25 ft precharged; 25 ft included line set) across the catalogue

Feature setTop quartile

(6 verified features) across the catalogue

Documentation & partsBelow average

(7 manuals; spec sheet) across the catalogue

Key ratings

Rated cooling

18,000BTU/h[3]

Rated heating

18,000BTU/h[3]

Best-fit use cases

Well suited to a large room or open area in a cold climate where a DIY-inclined owner wants full, unwavering heat and has a 230V circuit ready.

Where this system ranks

Buyer review snapshot

Install difficulty

DIY install path, electrical work likely
  • Electrical: 230V; breaker/fuse 20 A.
  • Line set: Quick-connect line connections; precharged 25 ft; included 25 ft.

Alternatives

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
Aug 17, 2026
Page reviewed
Jul 27, 2026
Source-backed records
4
Newest source retrieved
Aug 17, 2026

Warranty tiers

Base
7 yr parts / 7 yr compressor - published parts/compressor warranty

The score uses Base. Additional published terms are shown for reference and not counted in the score.

Review methodology

Model context

Structured ratings
Certification: ENERGY STAR certified and AHRI cold-climate designated. Refrigerant: current low-GWP R-454B. Minimum heating ambient: -4 F.

Strengths

  • Perfectly flat 18,000 BTU heat from 47F down to 5F - no cold-weather derating at all.
  • Strong 12.95 EER2 and cold-climate + ENERGY STAR certification for a value unit.
  • Precharged DIY linesets bring 1.5-ton capacity within reach of a skilled homeowner.

Weaknesses

  • A larger self-install means longer linesets to route carefully and a dedicated 230V circuit.
  • Value-brand support footprint is thinner than premium cold-climate names.

Climate suitability

Minimum heating ambient
-4 F[1]
Certified heating at 5F
18,000 BTU/h[3]
Rated heating at 17F
18,000 BTU/h[3]
Rated heating at 47F
18,000 BTU/h[3]

Specifications

Show
Manufacturer
Perfect Aire
Brand
Perfect Aire
Product line
Perfect Aire Quick Connect
Model number
4PAMSHQCW18 indoor / 4PAMSHQCO18 outdoor
Indoor unit model
4PAMSHQCW18
Outdoor unit model
4PAMSHQCO18
Number of zones
1
Max indoor units
not published
Rated cooling capacity
18,000 BTU/h[3]
Rated heating capacity
18,000 BTU/h[3]
Voltage
230 V[1]
MCA
not published - manufacturer specifies 20 A breaker
Maximum fuse or breaker size
20 A[1]
Breaker needed
20 A[1]
SEER2
21 SEER2[3]
EER2
12.95 EER2[3]
HSPF2 (Region 4)
10 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
-4 F[1]
Minimum outdoor cooling temperature
5 F[1]
Maximum outdoor temperature
115 F[1]
Indoor noise range
No published indoor sound rating
Outdoor noise rating
No published outdoor sound rating
Indoor weight
33 lb[1]
Outdoor weight
97 lb[1]
Refrigerant
R-454B[3]
Refrigerant charge
not published
Manufacturer coverage
not published
Line-set size
1/4 in liquid / 1/2 in suction
Included line-set length
25 ft[1]
Maximum line-set length
No published maximum line-set length
Max line set per indoor
not published
Maximum elevation difference
No published maximum elevation
Max height between indoor units
not published
Wi-Fi support
supported[1]
Energy Star status
ENERGY STAR certified[4]
AHRI certification number
216498646[3]
Warranty
Base: 7 yr parts / 7 yr compressor (published parts/compressor warranty). Score uses Base.. 7-year parts/compressor warranty
Install path
DIY install
Retail price
No current listing
Available retailers
not published
Manual links
AHRI public directory record 216498646, ENERGY STAR exact check 216498646, 18,000 BTU Quick Connect Mini-Split Single-Zone System with Indoor & Outdoor Units, Line Set - 230V, R454B refrigerant Perfect Aire product page, Perfect Aire Quick Connect product page excerpts, Perfect Aire 4PAMSHQC09 owner manual snapshot, 4PAMSHQC18 Perfect Aire product-page specifications
Specification sheet
4PAMSHQC18 Perfect Aire product-page specifications
Last sourced date
Aug 17, 2026

Electrical requirements

Show
Voltage
230 V[1]
Voltage range
230V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
not published - manufacturer specifies 20 A breaker
Breaker needed
20 A[1]
Maximum breaker size
not published
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
1/4 in[1]
Suction line
1/2 in[1]
Line connection type
Quick-connect line connections[2]
Precharged length
25 ft[1]
Included line-set length
25 ft[1]
Maximum line-set length
No published maximum line-set length
Max line set per indoor
not published
Max height between indoor units
not published
Indoor dimensions
42.75 x 9.50 x 12.50 in[1]
Outdoor dimensions
34 x 12.25 x 25.75 in[1]
Indoor weight
33 lb[1]
Outdoor weight
97 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Perfect Aire Quick Connect 18,000 BTU R-454B 230V (4PAMSHQCW18 / 4PAMSHQCO18) myself, or do I need a pro?
Perfect Aire Quick Connect 18,000 BTU R-454B 230V (4PAMSHQCW18 / 4PAMSHQCO18) is sold as a DIY-installable system with an included 25 ft line set, so a standard install needs no vacuum pump or gauges. EPA's Section 608 guidance says connecting pre-charged lines still requires technician certification. 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 Perfect Aire Quick Connect 18,000 BTU R-454B 230V (4PAMSHQCW18 / 4PAMSHQCO18) keep heating in a cold winter?
The AHRI/ENERGY STAR certification lists 18,000 BTU/h of heating capacity at 5F. Rated heating operation extends down to -4 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 Perfect Aire Quick Connect 18,000 BTU R-454B 230V (4PAMSHQCW18 / 4PAMSHQCO18) need?
Published electrical requirements: 230 V voltage and 20 A maximum breaker or fuse sizing. Confirm the final circuit against the unit nameplate and local code with a licensed electrician.
What warranty does the Perfect Aire Quick Connect 18,000 BTU R-454B 230V (4PAMSHQCW18 / 4PAMSHQCO18) carry?
The manufacturer publishes these warranty tiers: Base: 7 yr parts / 7 yr compressor (published parts/compressor warranty). Score uses Base.. Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.

Data sources

Show
  1. Perfect Aire: Perfect Aire Quick Connect single-zone product documentationSourced - manufacturer product page

    Covers Breaker needed, Frequency, Maximum fuse size, Phase, Voltage, Voltage range and more

  2. Perfect Aire: Perfect Aire Quick Connect single-zone product documentationSourced - manufacturer product page

    Covers Line connection type

  3. AHRI certificate #216498646 - 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

  4. ENERGY STAR: ENERGY STAR exact row check for AHRI 216997533Sourced - Energy Star listing

    Covers Energy Star status

Last updated

Jul 27, 2026