MRCOOL® 5kW Heat Kit for Signature Series R-454B Multiposition Air Handlers, MCAEHFD5X1AA

Product Description 

 

MRCOOL® Signature Series 5kW Electric Heat Kit (R-454B) 

The MRCOOL® Signature Series 5kW Heat Kit is designed to provide dependable auxiliary and emergency heat for compatible MRCOOL Signature Series R-454B multi-position air handlers. It’s the ideal solution for homeowners who want extra heating support during colder temperatures or a reliable backup when heat pump performance drops in extreme conditions.

This 5kW electric heat kit integrates directly into approved MRCOOL air handlers, delivering clean, consistent supplemental heat without the need for additional fuel sources. It’s commonly used in mild to moderate cold climates or as a secondary heat source to improve comfort during short cold snaps.

Built for reliability and safety, the kit is engineered specifically for R-454B Signature Series air handlers, ensuring proper airflow, electrical compatibility, and system protection. Installation is straightforward for licensed HVAC professionals, making it a popular add-on for new system installs, replacements, or upgrades.

Whether you’re building a complete Signature Series system or upgrading an existing air handler, the MRCOOL® 5kW Heat Kit adds confidence, comfort, and cold-weather reliability without overcomplicating the system.

 

  COMPATIBILITY

✔ MRCOOL® Signature Series R-454B Multi-Position Air Handlers

✔ Designed for factory-approved internal installation

✔ Ideal for supplemental or emergency electric heat

 

⚠️ Not compatible with non-Signature Series or non-R-454B air handlers.

 

TECHNICAL SPECIFICATIONS

Brand: MRCOOL

Series: Signature Series

Model: MCAEHFD5X1AA

Unit Type: Electric Heat Kit

 

Heating Capacity: 5kW

Application: Auxiliary / Emergency Heat

 

Compatible Refrigerant: R-454B

Designed For: Signature Series Multi-Position Air Handlers

 

 SHIPPING DIMENSIONS

Gross Dimensions:

• Width: 10.38”

• Depth: 14.13”

• Height: 9.25”

 

Frequently Asked Questions 

What does a 5kW heat kit do?

A 5kW heat kit provides electric backup heat, supporting the heat pump during colder temperatures or acting as emergency heat if needed.

 

Is this required for my MRCOOL system?

No. Heat kits are optional, but highly recommended in colder regions or for homeowners who want added peace of mind.

  

Which air handlers does this work with?

This kit is designed only for MRCOOL Signature Series R-454B multi-position air handlers.

  

Can homeowners install this themselves?

Installation should be performed by a licensed HVAC technician due to electrical connections and safety requirements.

 

Is this good for very cold climates?

For colder regions, higher-output kits (7.5kW or 10kW) may be recommended depending on system size and climate.

 

Why Buy From MRCOOL DIRECT?

When you order from MRCOOL Direct, you get:

• ✅ Authorized MRCOOL® dealer – Your warranty is protected
• ✅ Factory-fresh units – No refurbished or mystery sources
• ✅ Fast U.S. shipping – Most in-stock items ship in 1–3 business days
• ✅ Financing options – Make high-efficiency comfort more affordable
• ✅ Real product support – Help with sizing, line set selection, and DIY questions
• ✅ No third-party marketplace middlemen – Just genuine MRCOOL® systems from a trusted MRCOOL® dealer.

BUY DIRECT!

Feel Free to call us anytime. Family Friendly help just a dial away. We love talking HVAC
615-553-8118

Family owned & USAs #1 MRCOOL® Authentication Dealer.