2025 MRCOOL® DIY Hybrid™ Ducted Air Handler — Central Ducted Heat Pump, Multi-Zone Ready, DIY Install
New for 2025: The MRCOOL® DIY Hybrid™ Ducted Air Handler brings true central HVAC comfort to DIYers. Pair it with a compatible MRCOOL® DIY condenser for a central, ducted heat pump experience—and expand like a multi-zone mini split by adding wall or ceiling-mounted MRCOOL® air handlers to one outdoor condenser. Ships nationwide from MRCOOLDIYDirect.com, the USA’s most trusted MRCOOL dealer.
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Models: 24k (24,000 BTU, up to ~1,000 sq. ft.) and 36k (36,000 BTU, up to ~1,500 sq. ft.)
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DIY-Friendly: Communicates via control wire; pairs with pre-charged MRCOOL® DIY condensers
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Multi-Zone Flexibility: Treat like a multi-zone when sizing your condenser—sum total BTUs of all indoor air handlers
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Comfort Options: Supports optional emergency heat strips (heat kit)
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Smart Controls: Includes MRCOOL® Smart Wi-Fi Thermostat (touchscreen + MRCOOL® app)
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Durable Build: Painted galvanized steel cabinet; built-in self-diagnostics
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Install Positions: Upflow, downflow, horizontal (left/right) for maximum layout flexibility
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Eco-Forward Refrigerant: Uses R-454B (high performance with reduced environmental impact)
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Warranty: 5-Year Parts
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Fast Nationwide Shipping from America’s #1 MRCOOL® dealer
How the MRCOOL® DIY Hybrid™ Ducted System Works
Use this ducted air handler in place of a wall or ceiling cassette to create a central ducted zone. Then, add additional MRCOOL® mini split air handlers (wall or ceiling) to the same outdoor condenser. For sizing, add up the BTUs of each indoor unit (this ducted air handler plus any additional air handlers) to choose the right condenser capacity—just like a multi-zone mini split.
Quick Sizing Tip:
- Choose 24k (~1,000 sq. ft.) or 36k (~1,500 sq. ft.) for the ducted zone you want to condition.
- Sum all indoor unit BTUs (ducted + any wall/ceiling handlers) to select your outdoor DIY condenser size.
Top Features & Benefits
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Central Ducted Comfort: Even, whole-home airflow through existing or new ductwork.
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DIY-Ready Integration: Pairs with MRCOOL® DIY outdoor units via control wiring for simplified setup.
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Emergency Heat Option: Add an optional heat kit for colder snaps and peace of mind.
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Self-Diagnostics: Onboard error code panel streamlines troubleshooting and reduces downtime.
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Flexible Orientation: Upflow, downflow, or horizontal—fits a wide range of installations.
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Smart Wi-Fi Thermostat: Control schedules, modes, and temps from the touchscreen or MRCOOL® app.
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R-454B Refrigerant: Efficient, lower environmental impact compared to legacy refrigerants.
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Rugged Cabinet: Painted galvanized steel resists wear for long-term reliability.
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Nationwide Availability: In-stock and shipped fast from MRCOOLDIYDirect.com.
Available Sizes & Recommended Coverage
| Model |
Capacity (BTU) |
Typical Coverage |
Use Case |
| DIY Hybrid™ Ducted 24k |
24,000 BTU |
Up to ~1,000 sq. ft. |
Primary zone or medium home area via central ducts |
| DIY Hybrid™ Ducted 36k |
36,000 BTU |
Up to ~1,500 sq. ft. |
Larger primary zone or small home via central ducts |
Note: Coverage estimates vary with insulation, climate, ceiling height, window area, and occupancy. When building a multi-zone configuration, always sum the total indoor capacity (ducted + any additional mini split handlers) to select your outdoor condenser.
What’s Included
- MRCOOL® DIY Hybrid™ Ducted Air Handler (selected size)
- Built-in self-diagnostic display panel
- MRCOOL® Smart Wi-Fi Thermostat
- Owner’s/Installation documentation
Popular Add-Ons & Accessories
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Emergency Heat Kit (heat strips) for auxiliary heating
- Additional MRCOOL® indoor air handlers (wall or ceiling) for multi-zone expansion
- MRCOOL® DIY outdoor condenser (sized to total indoor BTUs)
- Ducting, plenums, returns, filters, supply registers (as needed)
DIY-Friendly Installation Overview
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Plan Ducting & Orientation: Choose upflow, downflow, or horizontal to fit your space.
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Mount the Air Handler: Secure the galvanized cabinet and connect supply/return ducts.
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Control Wiring: Connect to your compatible MRCOOL® DIY condenser per manual.
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Thermostat Setup: Install the MRCOOL® Smart Wi-Fi Thermostat and pair with the MRCOOL® app.
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Test & Commission: Use the self-diagnostic display to verify codes and performance.
Always follow the official MRCOOL® installation manual and local codes. Professional assistance may be required for electrical, duct, or code-specific tasks.
Smart Thermostat & App Control
Fine-tune comfort from the touchscreen thermostat or the MRCOOL® app. Set schedules, monitor modes, and manage temperatures from virtually anywhere to keep energy use in check without sacrificing comfort.
Shipping & Warranty
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Nationwide Shipping: Fast, reliable delivery across the USA from MRCOOLDIYDirect.com.
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Warranty: 5-Year Parts warranty for confidence and long-term reliability.
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Trusted Dealer: Buy with confidence from the USA’s most trusted MRCOOL® dealer.
Why Homeowners Choose the MRCOOL® DIY Hybrid™ Ducted Air Handler
This air handler is the ideal bridge between a central ducted heat pump and the flexibility of multi-zone mini splits. Replace an aging furnace/air handler with a modern, ducted MRCOOL® DIY solution, then add wall or ceiling mini split air handlers for rooms that need targeted comfort—all served by a single outdoor condenser. It’s an energy-smart, scalable approach to whole-home heating and cooling.
Frequently Asked Questions
Can I use this air handler with a MRCOOL® DIY condenser?
Yes. The DIY Hybrid™ Ducted Air Handler is designed to communicate via control wire and pair with compatible MRCOOL® DIY condensers for simplified, do-it-yourself installation.
How do I size the outdoor condenser?
Treat the system like a multi-zone mini split: add up the BTUs of the ducted air handler and any additional wall/ceiling indoor units. Choose an outdoor condenser that meets or slightly exceeds that total capacity.
What areas do the 24k and 36k sizes typically cover?
24k is commonly used for spaces up to ~1,000 sq. ft., while 36k is used up to ~1,500 sq. ft. Actual coverage depends on insulation, climate, windows, ceiling height, and layout.
Does it support emergency heat?
Yes. You can add an optional heat kit (heat strips) for auxiliary heating during colder weather.
Which refrigerant does it use?
This air handler uses R-454B, a modern, environmentally conscious refrigerant that delivers high performance with a reduced environmental impact versus older refrigerants.
Ready to build your MRCOOL® DIY Hybrid™ ducted system? Order today for fast nationwide shipping from MRCOOLDIYDirect.com — the USA’s most trusted MRCOOL® dealer.
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