MRCOOL® 7.5kW Heat Kit for Signature Series R-454B Multiposition Air Handlers, MCAEHFD7X1AA

Product Description 

 

MRCOOL® Signature Series 7.5kW Electric Heat Kit (R-454B) 

The MRCOOL® Signature Series 7.5kW Heat Kit is built for homeowners who want stronger auxiliary heat capacity and added confidence during colder weather. Designed specifically for MRCOOL Signature Series R-454B multi-position air handlers, this electric heat kit provides dependable supplemental or emergency heat when outdoor temperatures push a heat pump to its limits.

With 7.5kW of electric heating output, this kit is a popular choice for moderate to colder climates, larger homes, or systems where a 5kW kit may not provide enough backup heating capacity. It installs directly inside approved MRCOOL Signature Series air handlers, maintaining factory-correct airflow, electrical protection, and system performance.

The unit is engineered for seamless compatibility with R-454B air handlers and integrates cleanly without altering the core system design. Installation is straightforward for licensed HVAC professionals, making it an ideal add-on during new installs, replacements, or system upgrades.

If you’re looking to increase cold-weather comfort and protect your system’s performance during peak demand, the MRCOOL® 7.5kW Heat Kit delivers the extra heat output many homeowners want without overcomplicating the setup.

 

COMPATIBILITY

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

✔ Factory-approved internal installation

✔ Ideal for auxiliary or emergency electric heat

 

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

TECHNICAL SPECIFICATIONS

Brand: MRCOOL

Series: Signature Series

Model: MCAEHFD7X1AA

Unit Type: Electric Heat Kit

 

Heating Capacity: 7.5kW

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’s the difference between a 5kW and 7.5kW heat kit?

A 7.5kW heat kit provides more electric heating output, making it better suited for colder climates, larger homes, or systems needing stronger backup heat.

 

Is this required for my MRCOOL system?

No. Heat kits are optional, but highly recommended if you want emergency heat or improved cold-weather comfort.

  

Which air handlers does this work with?

Only MRCOOL Signature Series R-454B multi-position air handlers.

 

Who should install this heat kit?

Installation should be completed by a licensed HVAC professional due to electrical requirements.

 

Is this good for extreme cold climates?

In very cold regions, a 10kW heat kit may be recommended depending on system size and home insulation.

 

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!

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