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MHK20U Mrcool 20 KW Universal Air Handler Electric Heat Strip, 20kW

Regular price $306.00 USD
Regular price Sale price $306.00 USD
Sale Sold out
Shipping calculated at checkout.

The 20kW heat strip from MRCOOL, equipped with a circuit breaker, serves as a reliable source of emergency heat and is compatible with 48000 BTU/H Universal Air Handlers.


  • Ref. Air Handler use — 
    • MDUI18048
    • MDUI18060

Also available in:

Warning: This product can expose you to chemicals including Lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm:


✅ Emergency Heating: Ensure a reliable source of emergency heat for your MRCOOL Universal air handler with the electric heat strip.
✅ Safety Circuit Breaker: Equipped with a built-in circuit breaker, enhancing safety during operation.
✅ Quality Assurance: cUL/UL Listed for compliance with rigorous safety and quality standards.
✅ Prop65 Compliant: Designed in accordance with Prop65 regulations, prioritizing user safety and environmental standards.


Item Dimensions: 22”(L) X 12” (W) X 7” (H)
Item Weight: 8 lbs
Item Color / Finish: Gray

Heating Capacity: 65,001 - 70,000 BTU/H
Auxiliary Heater Sizes: 20 kW
Maximum Amperage: 60 Amp
Min Circuit Ampacity: 50A
Maximum Voltage: 208V/230V
Electrical Phase: 1 Ph
Wattage: 20,000w
Cycle: 60

Has Batteries: No
Electronics: Yes
Chemicals: No
Aerosol: No
Compressed Gas: No
Restricted States: GU;PR;VI
Made in USA: YES
Certificate: cUL/UL Listed, Prop65


Owner & Installation Manual,
Compatibility Sheet,

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Frequently Asked Questions about the MHK20U Mrcool 20 KW Universal Air Handler Electric Heat Strip, 20kW

What is an electric heat strip?

An electric heat strip is a heating element designed to provide supplemental heat in HVAC systems, particularly in air handlers.

How does an electric heat strip work?

Electric heat strips work by using electrical resistance to generate heat when activated. They are typically installed within air handlers to warm the air before it is distributed.

What is the purpose of using an electric heat strip in HVAC systems?

The primary purpose is to supplement heating in situations where the main heating source may not be sufficient, providing additional warmth as needed.

Are electric heat strips energy-efficient?

Electric heat strips are generally considered efficient, but their energy consumption can vary. Using them judiciously and in conjunction with a thermostat helps optimize energy use.

Can I install an electric heat strip in my existing HVAC system?

In many cases, yes. However, it's essential to consult with a professional HVAC technician to ensure compatibility and proper installation.