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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:
- 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
4.4 ★★★★★
Based on 1344 reviews
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Product Reviews
★★★★★ 4
Good quality and helpful even if your dog doesn’t use it yet
Color: Gray, Color: Gray
Still hoping my dog will decide to use this, but even if not, it’s serving a useful purpose. I keep pee pads down for accidents, and I started by placing this on top to encourage my dog to use it instead. Right now, I have it next to our end table to protect it, and it fits perfectly there. I may try putting a pad on top to help with the transition. The quality feels decent for the price—the plastic is thick enough, looks nice, and the top stays in place without being difficult to remove. It’s practical, easy to clean, and works well for what I needed.
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Reviewed in the United States on October 5, 2025
★★★★★ 5
The Best Interactive Dog Toy My Dogs Won’t Put Down!
Color: Blue
I have a Labrador and a Jack Russell and I bought this Qraxond interactive ball mainly for my Lab’s strong hunting instinct but I was absolutely blown away by how both dogs went crazy for it. This toy isn’t just fun it’s a total game changer for keeping pups entertained stimulated and out of trouble when I’m busy.
The ball arrived nicely packaged with clear easy to follow instructions. It comes with a USB C charging cable for the internal motor no wall adapter included but any standard USB plug works perfectly. The bright blue color is such a smart choice it stands out everywhere so I never lose it in the yard carpet or under furniture.
Operation is incredibly simple. The inner vibration module is held securely in the ball with heavy duty velcro. Inside a rubber core vibrates and makes the whole ball move and bounce unpredictably. There’s a protective plastic flap covering the charging port just press the button once for low mode again for high active mode and a third time to power off. Super intuitive for anyone to use.
The build quality is solid. While it’s not designed for aggressive chewers and the seller clearly states that which I really appreciate it holds up amazingly well for normal play. My dogs love shaking it tossing it and playing tug of war with me and each other and the toy hasn’t shown any signs of weakening. The reinforced fabric loops are stitched tightly and make it easy for dogs to grab shake and carry even my Lab has a blast tugging on it and the vibration keeps him distracted from pulling too hard.
The motion activated vibration works incredibly well. It’s highly sensitive so it activates as soon as your dog paws nudges or moves it then shuts off automatically when play stops to save battery. Both speed modes are a hit the low setting is gentle but engaging and the high setting gets them zooming around. The random movement triggers their natural prey drive so they can play independently for 10 to 20 minutes straight something my people focused standard poodle rarely does without human interaction. It’s fantastic mental stimulation that tires them out without me having to throw a ball a hundred times.
It’s truly versatile for all dog sizes and breeds you can’t get more different than a Labrador and a Jack Russell yet both adore it. I ended up buying a second one just to stop them from fighting over it! The soft padded outer cover is gentle on teeth and gums and since the instructions note to remove the inner core before cleaning the cover is clearly machine washable making cleanup a breeze.
Battery life is impressive it lasts through multiple play sessions before needing a charge and USB C charging is as convenient as charging a phone. At under $25 this toy offers incredible value way better than similar products I’ve tried that cost twice as much.
If you’re tired of boring toys that get ignored or need a way to keep your dog busy and mentally stimulated while you work or relax this Qraxond interactive ball is a must have. It’s durable fun easy to use and loved by every dog I’ve seen play with it. Highly highly recommend one of the best pet purchases I’ve ever made!
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Reviewed in the United States on April 12, 2026
★★★★★ 5
My dogs love this ball
Color: Blue
This interactive dog ball has been a huge hit with my doodles — Simba, Roxy, and Ozzy! The second I turn it on, they go crazy chasing it around the house. It keeps them entertained, active, and mentally stimulated, especially on rainy days when they can’t burn energy outside.
I love that it moves on its own and keeps them engaged without getting bored after 5 minutes like most toys. It’s durable enough for energetic dogs and rechargeable, which is a huge plus. Definitely worth it if you have playful pups that need extra stimulation and exercise!
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Reviewed in the United States on May 30, 2026
★★★★★ 4
The dog likes it, til her short attention span kicks in
Color: Green
This is an interesting toy.
Our little doodle really likes it when it starts up. She does lose interest after about 30 seconds. I think it's the pauses in-between the 10 second Normal or Crazy Bouncing Mode.
When she does play with it she is intense about it.
The loopy handles are very handy.
The company stands behind the product.
I would buy it again.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
A favorite toy in our house!
Color: Blue
This is the best interactive ball ever! It combines two of my pups' favorite toys...a soccer ball and weighted moveable ball. Perfect independent toy! We've had it for a few weeks and I've only had to charge it once. Amazing battery life.
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Reviewed in the United States on May 17, 2026
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