MODEL: MHK20PB

Maximum Supplemental Heat for Compatible MRCOOL® VersaPro Packaged Units.

Need stronger backup heating support for a larger MRCOOL® VersaPro packaged heat pump?

The MRCOOL® VersaPro® 20kW Heat Kit is designed to provide supplemental electric heat when paired with compatible larger MRCOOL® VersaPro packaged units.
This accessory helps support home comfort during colder conditions when your packaged heat pump needs additional heating assistance.

With precise thermostat control and built-in overheat protection, the heat kit helps maintain your preferred indoor temperature while supporting safe and reliable operation.

Compatible with select larger R-410A and R-454B VersaPro packaged heat pumps, this kit is a practical add-on for homeowners who want stronger heating confidence during harsh winter months.
Supplemental heat. Stronger support. Built for compatible MRCOOL® VersaPro packaged units.

Why You’ll Love It

✅ 20kW supplemental electric heat kit
✅ Designed for compatible larger MRCOOL® VersaPro packaged units
✅ Compatible with select R-410A and R-454B VersaPro package heat pumps
✅ Helps provide maximum additional heating support
✅ Precise thermostat control
✅ Built-in overheat protection
✅ Useful for colder weather or backup heating needs
✅ Genuine MRCOOL® accessory
✅ Professional installation required

Best For

Larger VersaPro Packaged Units • Supplemental Heating • Cold Weather Support • Packaged Heat Pumps • Whole Home Comfort • Larger Homes • Professional HVAC Installations

Compatibility 

  • Works with select larger R-410A and R-454B MRCOOL® VersaPro Package Heat Pumps.
  • Compatible R-410A packaged unit models:
    MPH421H413B
    MPH481H413B
    MPH601H413B
  • Compatible R-454B packaged unit models:
    MPH421HO13C
    MPH481HO13C
    MPH601HO13C
  • Always confirm compatibility with your exact packaged unit model, electrical requirements, and installation documentation before purchase.

Questions, answered

Everything homeowners ask before buying a MRCOOL® system.

Installation

What installation requirements apply to this product?

Installation requirements vary by product type. Selected complete MRCOOL® DIY systems are designed for homeowner installation when fitted in line with the manufacturer’s instructions, local codes and permit requirements.

Central HVAC systems, including Universal®, VersaPro®, Central Ducted Hyper Heat and packaged systems, are intended for professional installation by a qualified HVAC contractor. Licensed electrical work may also be required.

Components, thermostats, controls, line sets and accessories should be installed according to their product documentation and compatibility requirements. Always review the product page, manufacturer guidance and warranty conditions before installation.

Will I need any additional parts, tools or professional services?

Additional requirements vary by product and installation. Tools, electrical materials, mounting hardware, connecting components or other installation supplies may be required unless specifically stated as included.

Review the product description, specifications, installation information and What’s Included section, where available, before ordering.

Where can I find product documents or installation instructions?

Available specifications, installation instructions, owner’s manuals and manufacturer documents are provided on the product page where applicable.

Some simple accessories may not have a separate installation manual. Contact our team if you need help locating documentation for a particular product or model.

Sizing & Compatibility

How do I confirm this product is compatible with my equipment?

Review the product type, model number, dimensions, voltage, capacity, refrigerant type, connection sizes and compatibility information shown on the product page, where applicable.

Components, thermostats, controls and accessories must be matched to compatible equipment. Contact our team before ordering if you are uncertain about compatibility.

What should I check before ordering?

Confirm the product name and model number, together with any relevant dimensions, voltage, capacity, refrigerant type, connections and installation requirements.

For replacement components and accessories, compare the product specifications with your existing equipment and the relevant manufacturer documentation before placing your order.

What is included with this product?

The supplied items are listed in the What’s Included section or product description, where applicable. Only the products, components and accessories specifically stated are included.

Electrical materials, mounting equipment, connecting components or other installation supplies may need to be purchased separately unless expressly stated otherwise.

Warranty & Support

What warranty coverage applies to this product?

Warranty coverage varies by product and model. Eligible MRCOOL® products are covered according to the manufacturer’s warranty terms, registration requirements and installation conditions.

Accessories and individual components may have different coverage. Cool Heat Direct can provide available warranty documentation and general guidance, while warranty eligibility and claim decisions are determined by the manufacturer.

How can I get help before ordering?

Email support@coolheatdirect.com with the product name or model number and details about your project or existing equipment.

For compatibility questions, include the model numbers of any products you intend to connect, control, replace or use together.

Support hours: Monday–Friday, 9 AM–6 PM ET.

Shipping & Returns

How will my order be shipped?

Free standard shipping is available on eligible orders to the Lower 48 states and Washington, D.C.

Orders are generally processed within 3–5 business days, followed by approximately 5–12 business days in transit. Delivery timing varies by product availability, destination and carrier scheduling.

Smaller products may ship by parcel carrier. Larger equipment may be delivered curbside by freight carrier. The carrier may contact you to arrange a delivery appointment.

Can I return this product?

Return requests may be submitted within 30 calendar days of delivery. Products must be new, unused and uninstalled and, where applicable, unpowered. They must also be complete and in their original manufacturer packaging. Prior written authorization is required.

For approved change-of-mind returns, incorrect sizing or customer ordering errors, the customer is responsible for return freight and a 15% restocking fee applies.

Verified damaged, defective, incorrect or incomplete orders are handled separately under our full policy.

No questions match your search.
  • MRCOOL® Systems
  • DIY-Friendly Options
  • Free Lower 48 Shipping
  • Secure Checkout
  • Product Sizing Help
MRCOOL® Systems
DIY-Friendly Options
Free Lower 48 Shipping
Secure Checkout
Product Sizing Help