MRCOOL Advantage 5th Gen 18k BTU 230V Air Handler A-18-HP-WMAH-230D-O

Discover dependable comfort with the 5th Generation MRCOOL® 18k BTU Advantage Air Handler, now featuring R-454B refrigerant for improved energy efficiency and a lower Global Warming Potential (GWP). Ideal for larger spaces, this powerful air handler combines high performance with quiet operation, delivering year-round heating and cooling without the need for ductwork — an affordable, efficient choice for homeowners. Thanks to its built-in Wi-Fi capability, you can manage the unit remotely from your smartphone, allowing you to customize comfort settings and even schedule temperature adjustments during the night for extra energy savings. Backed by an extensive warranty once registered: 1 year on parts, 2 years on the compressor, and 1 year on the remote control. Enroll in the MRCOOL® Care Program for a Limited Lifetime warranty.

Key Features

• Gold Fin® coil — long-term corrosion resistance for coastal environments
• R-454B refrigerant — approximately 80% lower GWP than R-410A
• Follow Me® function — tracks air temperature around you for maximum comfort
• MRCOOL® SmartHVAC Controller® Module — works with Amazon Alexa and Google Assistant
• Built-in Wi-Fi for remote temperature control and overnight scheduling
• Timer mode, refrigerant leakage detection, and more
• No ductwork required — efficient and cost-effective installation
• AHRI Certified | NEEP ccASHP Listed | CEE Tier 1 - North | ETL listed
• 1-Year Parts / 2-Year Compressor Warranty (upon registration)
• MRCOOL® Care Program eligible for Limited Lifetime Warranty

Technical Specifications

Product Documentation

• MRCOOL Advantage 5th Generation Product Brochure (PDF)
• MRCOOL A-18-HP-WMAH-230D-O Installation Manual (PDF)
• MRCOOL Advantage 5th Gen Performance Specifications (PDF)
• MRCOOL Advantage 5th Gen Warranty Document (PDF)