SKU: 77883400124

MRCOOL UHK05 5kW Electric Heat Kit with Circuit Breaker – Universal Series (R-454B)

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Description

MRCOOL UHK05 5kW Electric Heat Kit with Circuit Breaker – Universal Series (R-454B)MRCOOL UHK05 5kW Electric Heat Kit with Circuit Breaker Universal Series (R 454B) The MRCOOL UHK05 5kW Heat Kit provides dependable supplemental electric heat for MRCOOL Universal Series R 454B air handlers. This factory approved kit includes a built in circuit breaker and installs directly into compatible Universal indoor units for efficient cold weather performance. Product Overview The MRCOOL UHK05 Electric Heat Kit is the ideal supplemental

MRCOOL UHK05 5kW Electric Heat Kit with Circuit Breaker – Universal Series (R-454B)

The MRCOOL UHK05 5kW Heat Kit provides dependable supplemental electric heat for MRCOOL Universal Series R-454B air handlers. This factory-approved kit includes a built-in circuit breaker and installs directly into compatible Universal indoor units for efficient cold-weather performance.

Product Overview

The MRCOOL UHK05 Electric Heat Kit is the ideal supplemental heating solution for Universal Series air handlers operating on the new R-454B refrigerant platform. Designed for seamless drop-in installation, this 5kW module enhances comfort in colder climates by providing fast, consistent electric backup heat.

Engineered by MRCOOL for perfect compatibility, the UHK05 includes an integrated circuit breaker, high-quality heating elements, and all required safety features. According to the Universal Series Heat Kit Installation Manual, the 5kW model integrates directly with select UAH-series air handlers and uses a single relay and breaker for reliable operation.

Whether you need auxiliary heat for cold snaps or full-time supplemental heating, the UHK05 delivers dependable performance aligned with MRCOOL’s Universal standards.

Features

  • 5kW auxiliary electric heat output
  • Built-in circuit breaker for enhanced safety
  • Factory-approved for MRCOOL Universal Series (R-454B)
  • Improves heating performance during low-temperature conditions
  • Simple plug-and-mount installation inside the air handler
  • Includes wiring diagram, foam gasket, breaker label & screws
  • Compatible with 208/230V, single-phase systems
  • Ideal for residential and light commercial supplemental heating

Compatible With

This 5kW heat kit is compatible with the following MRCOOL Universal Series R-454B Air Handlers:

  • UAH18024-O
  • UAH18030-O
  • UAH18036-O

Technical Specifications

Brand MRCOOL
Series Universal R-454B
Model UHK05
GTIN 00840255588041
UPC 840255588041
Unit Type Universal Series Heat Kit
Heater Capacity 5kW
Voltage 208/230V
Phase 1
Cycle 60 Hz
Internal Protection Circuit Breaker
Heater Amps 18.0/20.0 A
MCA 23.0/27.0
MOP 25.0/30.0
Net Dimensions 8.13" H × 10.63" W × 22" D
Net Weight 4.5 lbs
Gross Dimensions 10.25" H × 15" W × 25.63" D
Gross Weight 12.1 lbs

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 77883400124

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Yolanda
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Reviewed in the United States on June 7, 2026
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carol brooks
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I have a smaller head circumference and it fits great. Also, The brim isn’t too big .
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Reviewed in the United States on May 11, 2026
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Waukegan, US
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Bice
Size: One Size, Color: (536) Purple Crest / / Purple Crest
I thought that the color was really pretty! And, underarmour stuff,while a bit overpriced, is usually pretty comfy.
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Reviewed in the United States on May 7, 2026
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Sherri Guice
Whiting, US
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Love this hat, fits a woman’s head great!
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Reviewed in the United States on April 30, 2026
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Mr. S.
Alexandria, US
★★★★★ 5
Comfortable, Great Fit, and Perfect for Cooler Days
Color: Navy Heather, Size: Large
I bought this in January 2026 and have been really happy with it. The fit was as expected, which is always a big plus when ordering clothes online, and it feels comfortable right out of the package. What I like most is that it’s nice to wear when the weather is a little cooler, but it doesn’t feel too heavy or too hot. It works well as a light layer and has been a good option for those in-between days when you want something with long sleeves but don’t want a thick sweatshirt. It also looks good when wearing it, which makes it easy to use for more than just workouts or casual lounging. The overall style is clean, and it has a nice look without trying too hard. Overall, this has been a great purchase. If you want a comfortable quarter-zip pullover that fits well, looks good, and works well in cooler weather without overheating, I’d definitely recommend it.
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Reviewed in the United States on March 24, 2026

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