24K BTU Hybrid™ Ducted Air Handler
24K MRCOOL® DIY Hybrid™ Air Handler
Model: DIY-24-HP-MUAH-230D25-O
- Free shipping to the lower 48 · tracking emailed
- 7-yr compressor / 5-yr parts warranty
- No vacuum pump or special tools
- Real install help from people who've done it
Overview
The 24K MRCOOL® DIY Hybrid Air Handler is a smart, flexible solution for heating and cooling spaces up to 1,000 square feet. Designed for easy pairing with MRCOOL® DIY condensers, it allows for a seamless, do-it-yourself installation—ideal for replacing older HVAC systems. Its painted galvanized steel exterior ensures durability and long-lasting performance, while the built-in self-diagnostics panel simplifies troubleshooting by quickly identifying error codes and reducing downtime.
This air handler supports multiple installation configurations—including upflow, downflow, and horizontal left or right—making it adaptable to a variety of home layouts. It uses R454B refrigerant, an environmentally conscious option that offers high performance with reduced environmental impact. For added warmth during colder months, an optional heat kit can be included for increased year-round comfort and versatility.
The unit also comes equipped with the MRCOOL® Smart Wi-Fi Thermostat, allowing easy control via the touchscreen or the MRCOOL® app. This smart feature makes it simple to customize your indoor climate and maintain optimal comfort with minimal effort, whether you’re home or away.
Backed by a 5-year parts warranty, the 24K MRCOOL® DIY Hybrid Air Handler combines energy efficiency, convenience, and reliability. It’s a cost-effective, modern upgrade for homeowners seeking greater control, performance, and peace of mind in their home HVAC systems.
Shipping & returns
Free shipping to the lower 48. Orders are processed within 1–2 business days and we email tracking as soon as your order ships. See our Shipping Policy and Returns & Refunds.
Both DIY Hybrid™ sizes
It all mixes and matches.
Every unit here is MRCOOL® DIY® 5th Gen. These are the pieces that pair with this one.
Building a multi-zone? Our system builder checks every combo against MRCOOL's approved matchups.
Four steps. One weekend.
-
Hang the air handler
Level the wall plate, drill the pass-through, and hang the indoor unit.
Indoor -
Set the condenser
Place the outdoor unit on a pad or wall bracket with clearance to breathe.
Outdoor -
Connect the lines
Run the pre-charged Quick Connect® line set and tighten both ends with two wrenches.
Lines -
Power up
Hook up the dedicated circuit, pair the SmartHVAC app, done.
Power
Electrical hookup must follow local code.

