MRCOOL® Signature Series 5kW Electric Heat Kit for Stud-Mount Air Handlers (R-454B) — MCAEHWD5X1AA

Product Description 

The MRCOOL® Signature Series MCAEHWD5X1AA 5kW Electric Heat Kit is designed to add reliable supplemental or emergency heating to MRCOOL Signature Series R-454B stud-mount air handlers, making it an ideal upgrade for colder climates or homes that require extra heating capacity during winter months.

Engineered specifically for between-stud air handler installations, this heat kit integrates cleanly into compatible MRCOOL stud-mount air handlers without altering the unit’s compact footprint. Once installed, the heat kit provides consistent, electric resistance heat, ensuring dependable indoor comfort when outdoor temperatures drop or when additional heat support is needed beyond the heat pump alone.

Built to MRCOOL’s strict quality standards, the MCAEHWD5X1AA offers quiet, safe, and efficient operation, making it a trusted solution for residential and light commercial applications. Whether used as auxiliary heat or backup heat, this 5kW kit enhances system versatility while maintaining the streamlined design that makes MRCOOL stud-mount systems so popular for remodels, apartments, multi-family housing, and space-restricted installations.

When paired with a compatible MRCOOL Signature Series stud-mount air handler, this heat kit helps deliver year-round comfort, improved system performance in cold weather, and added peace of mind for homeowners.

 

KEY FEATURES & BENEFITS

 

 

• 5kW Electric Heat Output – Adds dependable auxiliary or emergency heat
• Designed for Stud-Mount Air Handlers – Maintains compact, in-wall installation
• Signature Series Compatibility – Built specifically for MRCOOL R-454B systems
• Improves Cold-Weather Performance – Ideal for colder climates
• Factory-Matched Fit – Seamless integration into compatible air handlers
• Electric Resistance Heating – Reliable, consistent heat delivery
• Quiet Operation – No additional noise beyond normal system operation
• OEM MRCOOL Accessory – Guaranteed fit and performance

 

COMPATIBILITY 

Works With:

• MRCOOL® Signature Series R-454B Stud-Mount Air Handlers

(Examples include 18K, 24K, 30K, and 36K stud-mount models when heat kit sizing allows.)

ELECTRICAL & SYSTEM NOTES

• Heat Output: 5kW
• Heating Type: Electric Resistance
• Application: Auxiliary / Emergency Heat
• Refrigerant Compatibility: R-454B systems

⚠️ Note: Proper electrical sizing and professional installation are recommended to ensure code compliance and safe operation.

 

 DIMENSIONS (SHIPPING) 

• Width: 10.38 in
• Height: 9.25 in
• Depth: 14.13 in

 

FREQUENTLY ASKED QUESTIONS  

Q: What does this heat kit do?

A: It provides electric auxiliary or emergency heat for compatible MRCOOL Signature Series stud-mount air handlers.

 

Q: Is this required for all installations?

A: No. Heat kits are optional but recommended in cold climates or where backup heat is desired.

 

Q: Will this change the size of my air handler?

A: No. The kit is designed to fit within the existing cabinet of compatible stud-mount air handlers.

 

Q: Can homeowners install this heat kit themselves?

A: Professional installation is strongly recommended due to electrical requirements and safety considerations.

 

Q: Is this an OEM MRCOOL part?

A: Yes. This is a genuine MRCOOL Signature Series accessory.

 

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