What's in the box
- 1 × MRCOOL® VersaPro® 20kW Heat Kit — MHK20PB
- Specification
- Specification Details Product Type Heat Kit Model MHK20PB Series VersaPro Packaged Unit Heat Kit Heating Capacity 20kW Equipment Type Accessory Compatible System Type MRCOOL® VersaPro Package Heat Pumps Compatible Refrigerant Systems R-410A / R-454B Overheat Protection Yes Thermostat Control Yes Gross Dimensions 18.7" W × 15.6" H × 8.07" D Gross Weight 12.35 lb
Professional installation is recommended.
This heat kit should be installed by a qualified HVAC professional or licensed electrician according to the packaged unit installation documentation, electrical requirements, and local codes.
Incorrect heat kit selection or installation may affect system performance and safety.
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Free shipping available.
Orders ship from U.S. warehouse locations. Delivery times may vary by product availability, destination, and freight carrier scheduling.Returns must follow Cool Heat Direct’s return policy and the product must meet return eligibility requirements.
Manuals & documents
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
Do I need an HVAC technician to install this?
No. MRCOOL® DIY systems are designed for homeowner installation. The pre-charged Quick Connect® line set means there's no refrigerant handling, no vacuum pump, and no special tools or license required.
How long does installation take?
Most single-zone systems go in within a few hours: mount the indoor air handler, set the outdoor condenser, connect the pre-charged line set, and power it on.
Do I need an electrician?
The system needs a dedicated circuit. Most homeowners have a licensed electrician add the breaker and disconnect — everything else you can do yourself.
Sizing & compatibility
What BTU size do I need?
As a rule of thumb: up to 400 sq ft → 9–12K BTU, 400–600 sq ft → 12–18K, 600–1,000 sq ft → 18–24K. Use the room-size guide above and factor in insulation, ceiling height and sun exposure.
Will it heat in winter?
Yes — these are heat pumps, so they heat and cool. Many MRCOOL® systems keep heating in sub-freezing temperatures; check each model's spec sheet for its low-temperature heating range.
115V or 230V — which do I need?
9K–12K units are usually 115V (standard outlet circuit); 18K and larger are typically 230V. The voltage is shown in the product options and specifications.
Warranty & support
What warranty is included?
MRCOOL® systems carry manufacturer warranty coverage — typically 5–10 years on major components when you register your system after installation.
How do I get help choosing or installing?
Email support@coolheatdirect.com — our U.S. team replies within one business day with sizing, voltage and compatibility help.
Shipping & returns
How fast does it ship?
Most products ship in 3–5 business days with free curbside delivery in the continental U.S. The freight carrier calls to schedule your delivery.
Can I return it?
Returns are accepted within 30 days on new, unopened items in original packaging. A restocking fee may apply to HVAC equipment — we always confirm before issuing a return authorization.
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