SplitAtlas

Klimaire / KMHR Hyper Heat Series

Klimaire KMHR Hyper Heat 35k HZ R-454B 208/230V 5-Zone Mini-Split

Certified capacity
36,000 BTU/h[2]
SEER2
21.5 SEER2[2]
Heating floor
-22 F[1]
Voltage
230 V[1]
Install path
Professional install

The Klimaire KMHR Hyper Heat Series 5-Zone 35k runs five heads off one 208/230V outdoor unit at a certified nominal SEER2 21.5, EER2 12.2, HSPF2 11.3 on current R-454B refrigerant. From the Hyper Heat line, its certified heating is 36,000 BTU at 47F, 38,500 BTU at 17F and 37,000 BTU at 5F.

The HSPF2 of 11.3 is strong, and that is genuine low-temperature capacity, though the system is not ENERGY STAR certified. It is a value-focused pick that sits below the top premium brands on brand and dealer support.

Professional installation required; dealer-quoted.

5 zonesProfessional installCurrent

Refrigerant generation

R-454B - current-generation refrigerant

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Error Codes
Klimaire KMHR Hyper Heat Series 5-Zone 35,000 BTU R-454B 208/230V (KMHR536-H224-4) mini-split heat pump outdoor condenser

Image: Klimaire

Data completeness: 95%
Last sourced
Jul 29, 2026

SplitAtlas score

8.8 / 10

Methodology
Cooling efficiencyAbove average

(21.5 SEER2) among 36k systems

Heating efficiencyTop 10%

(11.3 HSPF2) among 36k systems

Cold-weather performanceTop quartile

(5F certified capacity: 100% of the 47F rating; -22 F heating floor) among 36k systems

WarrantyBelow average

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

Feature setBelow average

(4 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

36,000BTU/hNon-Ducted Indoor Units[2]

Rated heating

36,000BTU/hNon-Ducted Indoor Units[2]

Buyer review snapshot

Best for / skip if

Best for

  • 5-zone projects in the 36k outdoor capacity class.

Install difficulty

Professional flared-line install
  • Electrical: 230V; MCA 37 A; breaker/fuse 40 A.
  • Line set: Flared line connections; max 262.4 ft.
  • 5-zone condenser; indoor-head matching and branch layout are part of the job.

Alternatives

Availability and price context

This system needs a professional install, so its real price is an installed quote that depends on your home. We don't link to a listing for this exact model; get installation quotes to price it.

Source date

Model data sourced
Jul 29, 2026
Page reviewed
Jul 29, 2026
Source-backed records
4
Newest source retrieved
Jul 29, 2026

Warranty tiers

Registered
5 yr parts / 7 yr compressor - registration/installation terms

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

Review methodology

Model context

Install path
This is professional-install equipment; price it with an installed quote.
Structured ratings
Certification: ENERGY STAR certified and AHRI cold-climate designated. Refrigerant: current low-GWP R-454B. Minimum heating ambient: -22 F.

Strengths

  • Certified nominal SEER2 21.5 / EER2 12.2 / HSPF2 11.3 on current R-454B refrigerant.
  • Certified heating: 36,000 BTU at 47F, 38,500 BTU at 17F and 37,000 BTU at 5F.
  • Five zones from one condenser cover a larger home.
  • Strong HSPF2 11.3 at a value price below the premium brands.

Weaknesses

  • Not ENERGY STAR certified and below the top premium brands on brand/dealer support.
  • 36,000 BTU across five zones is modest per room; size each head.

Climate suitability

Minimum heating ambient
-22 F[1]
Certified heating at 5F
37,000 BTU/hNon-Ducted Indoor Units[2]
Rated heating at 17F
38,500 BTU/hNon-Ducted Indoor Units[2]
Rated heating at 47F
36,000 BTU/hNon-Ducted Indoor Units[2]

Specifications

Show
Manufacturer
Klimaire
Brand
Klimaire
Product line
KMHR Hyper Heat Series
Model number
KMHR536-H224-4
Indoor unit model
Depends on the indoor units you choose
Outdoor unit model
KMHR536-H224-4
Number of zones
5
Max indoor units
5 units[1]
Rated cooling capacity
36,000 BTU/hNon-Ducted Indoor Units[2]
Rated heating capacity
36,000 BTU/hNon-Ducted Indoor Units[2]
Voltage
230 V[1]
MCA
37 A[1]
Maximum fuse or breaker size
40 A[1]
Breaker needed
not published
SEER2
21.5 SEER2Non-Ducted Indoor Units[2]
EER2
12.2 EER2Non-Ducted Indoor Units[2]
HSPF2 (Region 4)
11.3 HSPF2Non-Ducted Indoor Units[2]
HSPF2 (Region 5)
Varies by indoor-unit combination
COP
not published
COP at 47F
not published
COP at 5F
not published
Minimum outdoor heating temperature
-22 F[1]
Minimum outdoor cooling temperature
-22 F[1]
Maximum outdoor temperature
122 F[1]
Indoor noise range
Depends on the indoor units you choose
Outdoor noise rating
65 dBA[1]
Indoor weight
Depends on the indoor units you choose
Outdoor weight
211.86 lb[1]
Refrigerant
R-454B[2]
Refrigerant charge
134.04 oz[1]
Manufacturer coverage
not published
Line-set size
5 x 1/4 in liquid / 3 x 3/8 in + 2 x 1/2 in suction
Included line-set length
Depends on the indoor units you choose
Maximum line-set length
262.4 ft[1]
Max line set per indoor
114.8 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
Not ENERGY STAR certified[3]
AHRI certification number
217489289Non-Ducted Indoor Units[2]
Warranty
Registered: 5 yr parts / 7 yr compressor (registration/installation terms). Score uses Registered.. 7-year compressor, 5-year parts warranty with Klimaire registration/installation terms.
Install path
Professional install
Retail price
Installed quote only
Available retailers
not published
Manual links
AHRI public detail 217489289, Klimaire KMIR/KMHR Multi-Zone Combination Rule and official indoor-unit pages, ENERGY STAR exact lookup 217489289, Klimaire KMHR Hyper Heat Series official product page for KMHR536-H224-4, Klimaire KMHR Hyper Heat Series official product-page specification table
Specification sheet
Klimaire KMHR Hyper Heat Series official product-page specification table
Last sourced date
Jul 29, 2026

Compatible indoor units

This is an outdoor unit. You choose its indoor heads separately - up to the maximum this condenser supports - and you can mix room sizes and styles across the zones. The models below are the heads this unit is documented to pair with.

  • Ceiling cassette air handlers

    9k, 12k, 18k, 24k

    Model numbers
    • 9k: KTIS09-HS2-4
    • 12k: KTIS012-H2-4
    • 18k: KTIS18-H2-4
    • 24k: KTIS024-H2-4

  • Ducted multi-position air handlers

    18k, 24k

    Model numbers
    • 18k: KDIC18-H2-4
    • 24k: KDIC24-H2-4

  • Ducted recessed air handlers

    18k

    Model numbers
    • 18k: KDIP18-H2

  • Floor/ceiling air handlers

    18k, 24k

    Model numbers
    • 18k: KUIR18-H2-4
    • 24k: KUIR24-H2-4

  • Wall-mounted air handlers

    6k, 9k, 12k, 18k, 24k

    Model numbers
    • 6k: KSIH006-H225-IW-4
    • 9k: KSIH009-H225-IW-4
    • 12k: KSIH012-H222-IW-4
    • 18k: KSIH018-H220-IW-4
    • 24k: KSIH024-H220-IW-4

Sizing note: do not just add up the rooms. Multi-zone condensers have a maximum total connected capacity, and connecting more head capacity than the unit is rated for is a common installer mistake that hurts efficiency and comfort. Match total head capacity to the condenser's rating.

Electrical requirements

Show
Voltage
230 V[1]
Voltage range
208/230V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
37 A[1]
Breaker needed
not published
Maximum breaker size
40 A[1]
Maximum fuse size
40 A[1]
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
not published

Installation considerations

Show
Liquid line
5 x 1/4 in[1]
Suction line
3 x 3/8 in + 2 x 1/2 in[1]
Line connection type
Flared line connections[1]
Precharged length
not published
Included line-set length
Depends on the indoor units you choose
Maximum line-set length
262.4 ft[1]
Max line set per indoor
114.8 ft[1]
Max height between indoor units
not published
Indoor dimensions
Depends on the indoor units you choose
Outdoor dimensions
38.58 x 16.34 x 38.39 in[1]
Indoor weight
Depends on the indoor units you choose
Outdoor weight
211.86 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Klimaire KMHR Hyper Heat Series 5-Zone 35,000 BTU R-454B 208/230V (KMHR536-H224-4) myself, or do I need a pro?
Klimaire KMHR Hyper Heat Series 5-Zone 35,000 BTU R-454B 208/230V (KMHR536-H224-4) 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 Klimaire KMHR Hyper Heat Series 5-Zone 35,000 BTU R-454B 208/230V (KMHR536-H224-4) keep heating in a cold winter?
The AHRI/ENERGY STAR certification lists 37,000 BTU/h of heating capacity at 5F. Rated heating operation extends down to -22 F. Certified heating efficiency is 11.3 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 Klimaire KMHR Hyper Heat Series 5-Zone 35,000 BTU R-454B 208/230V (KMHR536-H224-4) need?
Published electrical requirements: 230 V voltage, 37 A minimum circuit ampacity, and 40 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 114.8 ft. The combined piping limit across all heads is 262.4 ft. Measure the planned routing before ordering.
What warranty does the Klimaire KMHR Hyper Heat Series 5-Zone 35,000 BTU R-454B 208/230V (KMHR536-H224-4) carry?
The manufacturer publishes these warranty tiers: Registered: 5 yr parts / 7 yr compressor (registration/installation terms). 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.: Klimaire KMHR Hyper Heat Series official product-page evidence for KMHR536-H224-4Sourced - manufacturer product page

    Covers Frequency, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase, Voltage and more

  2. AHRI certificate #217489289 - search the AHRI DirectorySourced - AHRI directory

    Covers AHRI certification number, performance_spec.cold_climate_designation, Rated cooling capacity, EER2, Rated heating capacity, HSPF2 (Region 4) and more

  3. ENERGY STAR: ENERGY STAR exact row check for AHRI 215735288Sourced - Energy Star listing

    Covers performance_spec.energy_star_cold_climate, Energy Star status

  4. Klimaire Products Inc.: Klimaire KMIR Series official product-page evidence for KMIR536-H224-4Sourced - manufacturer product page

    Covers Registered compressor warranty, Registered warranty conditions, Registered parts warranty

  5. Klimaire KMIR/KMHR Multi-Zone Combination Rule and official indoor-unit pagesSourced - manual

    Covers Manual links

Last updated

Jul 29, 2026