SplitAtlas

Klimaire / Klimaire KIWQ-KOIQ DIY

Klimaire DIY 36k R-454B 230V Mini-Split

Certified capacity
36,000 BTU/h[3]
SEER2
19 SEER2[3]
Heating floor
-4 F[1]
Voltage
230 V[1]
Install path
DIY install

The 36,000 BTU unit tops the DIY line on capacity but steps off the cold-climate list, landing at SEER2 19, EER2 9, and HSPF2 9 on R-454B at 230V. It heats 36,000 BTU at 47F, 23,400 BTU at 17F, and 20,400 BTU at 5F. Precharged quick-connect line sets still make this 3-ton head a self-install option, just without the cold-climate designation of its smaller siblings.

1 zoneDIY installCurrent

Refrigerant generation

R-454B - current-generation refrigerant

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Error Codes
Klimaire KIWQ-KOIQ DIY 36,000 BTU R-454B 208-230V (KIWQ36H2-45T / KOIQ36H2-45T) mini-split heat pump indoor wall unit and outdoor condenser kit

Image: Klimaire

Data completeness: 98%
Last sourced
Aug 17, 2026

SplitAtlas score

7.3 / 10

Methodology
Cooling efficiencyBottom quartile

(19.0 SEER2) among 36k systems

Heating efficiencyBottom quartile

(9.0 HSPF2) among 36k systems

Cold-weather performanceBottom quartile

(5F certified capacity: 56.7% of the 47F rating; -4 F heating floor) among 36k systems

NoiseBelow average

(36 dBA indoor min / 63 dBA outdoor) among 36k systems

WarrantyBelow average

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

Installation accessibilityBelow average

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

Feature setBelow average

(3 verified features) across the catalogue

Documentation & partsBottom quartile

(9 manuals; 51 error-code rows) across the catalogue

Key ratings

Rated cooling

36,000BTU/h[3]

Rated heating

36,000BTU/h[3]

Best-fit use cases

Best for a large main floor, garage, or shop in a moderate climate where a confident DIYer wants big single-zone capacity on a 230V circuit.

Buyer review snapshot

Install difficulty

DIY install path, electrical work likely
  • Electrical: 230V; MCA 18 A; breaker/fuse 30 A.
  • Line set: Quick-connect line connections; precharged 25 ft; included 25 ft; max 98 ft.

Alternatives

Availability and price context

  • Sold at Amazon. Open the listing for today's price and stock.

Source date

Model data sourced
Aug 17, 2026
Page reviewed
Jul 26, 2026
Source-backed records
5
Newest source retrieved
Aug 17, 2026

Warranty tiers

Base
3 yr parts - base residential coverage
Registered
5 yr parts / 7 yr compressor - registered residential use within 45 days

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

Review methodology

Strengths

  • Full 36,000 BTU at 47F gives whole-floor or shop-level heating and cooling from a single DIY head.
  • The precharged quick-connect line set carries the DIY advantage up to the 3-ton class without a vacuum pump or gauges.
  • SEER2 19 on low-GWP R-454B is still solid efficiency for a unit this large at a value price.

Weaknesses

  • Unlike the rest of the DIY line, it is not cold-climate designated, and output fades to 20,400 BTU at 5F in hard winters.
  • Not ENERGY STAR certified, and a 3-ton self-install stretches DIY practicality while support runs through a smaller distributor network.

Climate suitability

Minimum heating ambient
-4 F[1]
Certified heating at 5F
20,400 BTU/h[3]
Rated heating at 17F
23,400 BTU/h[3]
Rated heating at 47F
36,000 BTU/h[3]

Specifications

Show
Manufacturer
Klimaire
Brand
Klimaire
Product line
Klimaire KIWQ-KOIQ DIY
Model number
KIWQ36H2-45T indoor / KOIQ36H2-45T outdoor
Indoor unit model
KIWQ36H2-45T
Outdoor unit model
KOIQ36H2-45T
Number of zones
1
Max indoor units
not published
Rated cooling capacity
36,000 BTU/h[3]
Rated heating capacity
36,000 BTU/h[3]
Voltage
230 V[1]
MCA
18 A[1]
Maximum fuse or breaker size
30 A[1]
Breaker needed
not published
SEER2
19 SEER2[3]
EER2
9 EER2[3]
HSPF2 (Region 4)
9 HSPF2[3]
HSPF2 (Region 5)
not published
COP
not published
COP at 47F
not published
COP at 5F
2.1 COP[3]
Minimum outdoor heating temperature
-4 F[1]
Minimum outdoor cooling temperature
5 F[1]
Maximum outdoor temperature
122 F[1]
Indoor noise range
36-52 dB(A)[1]
Outdoor noise rating
63 dBA[1]
Indoor weight
39.7 lb[1]
Outdoor weight
105.8 lb[1]
Refrigerant
R-454B[3]
Refrigerant charge
not published
Manufacturer coverage
2,000 sq ft[1]
Line-set size
1/4 in liquid / 5/8 in suction
Included line-set length
25 ft[1]
Maximum line-set length
98 ft[1]
Max line set per indoor
not published
Maximum elevation difference
65 ft[1]
Max height between indoor units
not published
Wi-Fi support
supported[1]
Energy Star status
Not ENERGY STAR certified[4]
AHRI certification number
218067081[3]
Warranty
Base: 3 yr parts (base residential coverage); Registered: 5 yr parts / 7 yr compressor (registered residential use within 45 days). Score uses Registered.. DIY Mini-Split Systems: 5 years parts / 7 years compressor when registered for residential use within 45 days; base coverage is 3 years parts; commercial use is 3 years parts and compressor.
Install path
DIY install
Retail price
not published
Available retailers
Amazon
Manual links
AHRI public directory record 218067081, Klimaire KIWQ-KOIQ DIY brochure, ENERGY STAR exact check 218067081, KIWQ/KOIQ 2026 Installation and Users Manual, Klimaire mini-split wall-mount collection, 36,000 BTU KIWQ-KOIQ DIY Series Do-It-Yourself High Wall-Mounted Ductless Mini Split Heat Pump Air Conditioner with E-Z Kuick Connect Kit, Klimaire KIWQ-KOIQ DIY product page quick-connect documentation, Klimaire warranty information
Specification sheet
not published
Last sourced date
Aug 17, 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 on Amazon

Electrical requirements

Show
Voltage
230 V[1]
Voltage range
208/230V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
18 A[1]
Breaker needed
not published
Maximum breaker size
30 A[1]
Maximum fuse size
30 A[1]
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
16 AWG, 4-conductor connection wiring[1]

Installation considerations

Show
Liquid line
1/4 in[1]
Suction line
5/8 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
98 ft[1]
Max line set per indoor
not published
Max height between indoor units
not published
Indoor dimensions
46.89 x 14.17 x 10.16 in[1]
Outdoor dimensions
38.5 x 16.57 x 31.61 in[1]
Indoor weight
39.7 lb[1]
Outdoor weight
105.8 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Klimaire KIWQ-KOIQ DIY 36,000 BTU R-454B 208-230V (KIWQ36H2-45T / KOIQ36H2-45T) myself, or do I need a pro?
Klimaire KIWQ-KOIQ DIY 36,000 BTU R-454B 208-230V (KIWQ36H2-45T / KOIQ36H2-45T) 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 Klimaire KIWQ-KOIQ DIY 36,000 BTU R-454B 208-230V (KIWQ36H2-45T / KOIQ36H2-45T) keep heating in a cold winter?
The AHRI/ENERGY STAR certification lists 20,400 BTU/h of heating capacity at 5F. Rated heating operation extends down to -4 F. Certified heating efficiency is 9 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 Klimaire KIWQ-KOIQ DIY 36,000 BTU R-454B 208-230V (KIWQ36H2-45T / KOIQ36H2-45T) need?
Published electrical requirements: 230 V voltage, 18 A minimum circuit ampacity, and 30 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 ft. The outdoor unit's factory charge covers up to 25 ft of line; longer runs need added refrigerant. A 25 ft line set is included. Longer runs than the included set allows require a different line set, so measure the planned routing before ordering.
What warranty does the Klimaire KIWQ-KOIQ DIY 36,000 BTU R-454B 208-230V (KIWQ36H2-45T / KOIQ36H2-45T) carry?
The manufacturer publishes these warranty tiers: Base: 3 yr parts (base residential coverage); Registered: 5 yr parts / 7 yr compressor (registered residential use within 45 days). Score uses Registered.. Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.

Data sources

Show
  1. Klimaire Products Inc.: 9,000 BTU KIWQ-KOIQ DIY Series Do-It-Yourself High Wall-Mounted Ductless Mini Split Heat Pump Air Conditioner with E-Z Kuick Connect KitSourced - manufacturer product page

    Covers Frequency, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase, Manufacturer wire notes and more

  2. Klimaire Products Inc.: KIWQ/KOIQ 2026 Installation and Users ManualSourced - secondary source

    Covers Line connection type

  3. AHRI certificate #218067081 - search the AHRI DirectorySourced - AHRI directory

    Covers AHRI certification number, Rated cooling capacity, COP at 5F, EER2, Rated heating capacity, HSPF2 (Region 4) and more

  4. ENERGY STAR record for AHRI #218067081 - search ENERGY STARSourced - Energy Star listing

    Covers Energy Star status

  5. Klimaire Products Inc.: Klimaire Warranty Information - DIY Mini-Split SystemsSourced - manufacturer product page

    Covers Legacy compressor warranty value, Legacy warranty value, Registered compressor warranty, Registered warranty conditions, Registered parts warranty, Base warranty conditions and more

Last updated

Jul 26, 2026