MRCOOL 36,000 BTU DIY Hybrid Ducted Air Handler Multi-Zone Compatible, R-454B refrigerant DIY-36-HP-MUAH-230D25-O

MRCOOL 36,000 BTU DIY Hybrid Ducted Air Handler Multi-Zone Compatible, R-454B refrigerant DIY-36-HP-MUAH-230D25-O

The MRCOOL 36,000 BTU DIY Hybrid Ducted Air Handler is designed to deliver superior comfort for multi-zone HVAC setups. This high-efficiency air handler integrates seamlessly with MRCOOL DIY systems, providing reliable heating and cooling throughout your home. Its hybrid design ensures optimal performance while supporting environmentally friendly R-454B refrigerant.

Engineered for convenience and flexibility, this air handler is compatible with multiple zones, making it ideal for homes requiring precise temperature control in separate areas. Installation is straightforward, catering to the DIY enthusiast without compromising on professional-grade performance.

With advanced airflow management and quiet operation, the unit maintains a comfortable environment without the disruption of excessive noise. The durable construction and quality components ensure long-lasting performance, backed by MRCOOL’s commitment to excellence.

Whether upgrading an existing system or installing a new multi-zone setup, this air handler offers a combination of energy efficiency, reliability, and easy integration. It’s an excellent choice for homeowners looking to customize their indoor climate with a DIY-friendly solution.

Features 

• 36,000 BTU (3-Ton) heating & cooling capacity
• Works with MRCOOL DIY condensers & Multi-Zone
• Ultra-quiet operation: 31–48 dBA
• Up to 1,550 sq. ft. coverage
• Max lineset length: 246 ft
• EEV metering device — precise performance
• AHRI, UL, CSA, ETL certified
• Central Ducted Comfort

• Even airflow through existing or new ducts—no wall units required.
• DIY-Ready Communication
  Pairs seamlessly with MRCOOL® DIY condensers via control wiring.
• Emergency Heat Ready
  Supports optional heat strips (5kW to 20kW heat kit) for winter backup or extreme cold.
• Smart Controls Included
  Works with the MRCOOL® Smart Wi-Fi Thermostat — touchscreen and mobile app.
• Self-Diagnostics Panel
  Onboard error code panel speeds troubleshooting and reduces downtime.
• Flexible Orientation
  Install upflow, downflow, or horizontal (left/right)—ideal for basements, closets, crawlspaces, attics, and utility rooms.
• R-454B Refrigerant
  The next-generation refrigerant with higher performance and reduced environmental impact vs R410A.
• Rugged Cabinet
  Painted galvanized steel designed for long service life and real-world installations.
• Real Warranty
  5-Year Parts Warranty — backed by MRCOOL, not a reseller gimmick.

Specifications

Works with (Sold Separately)

DIY-MULTI4-27HP230D-O  MRCOOL® 27k DIY 5th Generation 4 Zone Multi-Zone Mini-Split Condenser 230v

DIY-MULTI5-36HP230D-O  MRCOOL® 36k DIY 5th Generation 5 Zone Multi-Zone Mini-Split Condenser 230v

DIY-MULTI5-36HP230D-O  MRCOOL® 36k DIY 5th Generation 5 Zone Multi-Zone Mini-Split Condenser 230v

DIY-MULTI6-48HP230D-O  MRCOOL® 48k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v

DIY-MULTI6-55HP230D-O  MRCOOL® 55k DIY 5th Generation 6 Zone Multi-Zone Mini-Split Condenser 230v

DIY-36-HP-C-230D25-O  MRCOOL® 36k DIY 5th Generation Mini-Split Condenser 230v

What Heat Kits fit (Sold Separately)  

MVPHK05 5kW. VersaPro, Hyper Heat 2nd Gen 454B  and DIY Hybrid Air Handler Heat Kit

MVPHK08  VersaPro, Hyper Heat 2nd Gen 454B  and DIY Hybrid Air Handler Heat Kit

MVPHK10  VersaPro, Hyper Heat 2nd Gen 454B  and DIY Hybrid Air Handler Heat Kit

MVPHK15  VersaPro, Hyper Heat 2nd Gen 454B  and DIY Hybrid Air Handler Heat Kit

MVPHK20  VersaPro, Hyper Heat 2nd Gen 454B  and DIY Hybrid Air Handler Heat Kit

Frequently Asked Questions

Can I use this air handler with a MRCOOL® DIY condenser?

Absolutely. The DIY Hybrid™ Ducted Air Handler is built to communicate through control wire and pair directly with compatible MRCOOL® DIY condensers, delivering a true DIY installation with full factory support.

How do I size the outdoor condenser?

Treat the system like a multi-zone mini split.

Add the BTUs of the ducted air handler PLUS any other indoor heads.

Choose a condenser that meets or slightly exceeds that total capacity.

What areas do the 24k and 36k units typically handle?

• 24K (24,000 BTU) — up to ~1,000 sq. ft.
• 36K (36,000 BTU) — up to ~1,500 sq. ft.
  Coverage changes with insulation, climate, windows, ceiling height, and room layout.

Does it support emergency heat?

Yes. You can install an optional heat kit (heat strips) to provide auxiliary heat in colder months or extreme temperature swings.

Which refrigerant does it use?

This air handler uses R-454B, a next-generation refrigerant engineered for high efficiency and reduced environmental impact compared to older refrigerants like R410A.