MRCOOL 36k 5th Gen DIY Multi‑Zone Bundle with 9K + 24K Air Handlers & 25ft Line Sets 230V R‑454B DIYM236HPW03D07

MRCOOL 36k 5th Gen DIY Multi‑Zone Bundle with 9K + 24K Air Handlers & 25ft Line Sets 230V R‑454B DIYM236HPW03D07

Experience powerful, customizable comfort with the MRCOOL 36k 5th Gen DIY Multi‑Zone Bundle with 9K + 24K Air Handlers & 25ft Line Sets. This all‑in‑one mini‑split HVAC solution brings advanced 5th Generation performance to your home with a 36,000 BTU multi‑zone outdoor condenser paired with a 9,000 BTU and a 24,000 BTU wall‑mount air handler. Designed with true DIY installation in mind, this system uses pre‑charged Quick‑Connect® R‑454B line sets so you can install without a vacuum pump, gauges, or refrigerant handling — saving on labor and setup complexity.

The smaller 9K indoor unit is ideal for bedrooms, home offices, or smaller living spaces up to approximately 400 sq. ft., while the robust 24K unit covers larger areas such as living rooms, basements, or open‑concept spaces up to about 1,050 sq. ft. With long 25‑foot line sets included for each indoor unit, you have outstanding flexibility to position the units exactly where they perform best, even when the condenser is located farther from the main living areas.

At the heart of this bundle is the MRCOOL 5th Gen DIY outdoor condenser, offering up to 23 SEER2 efficiency and a corrosion‑resistant Gold Fin® coil for long life and powerful climate control. The system integrates with the SmartHVAC® app and works with Amazon Alexa and Google Assistant, giving you seamless control from your smartphone or voice commands.

Ideal for homes without existing ductwork, additions, in‑law suites, and other multi‑zone applications, this system not only delivers zoned comfort and energy savings but also leaves room for future expansion — the outdoor condenser can support up to five indoor units total.

Features

• True DIY installation with factory‑charged R‑454B Quick‑Connect® line sets — no vacuum pump, gauges, or refrigerant handling required.

• 36,000 BTU 5th Gen DIY multi‑zone outdoor condenser supports up to five indoor zones.

• High efficiency: up to 23 SEER2, 12 EER2, 9.9 HSPF2‑4, 7.5 HSPF2‑5.

• SmartHVAC® app control with Wi‑Fi and voice assistant compatibility (Amazon Alexa & Google Assistant).

• Quiet, inverter‑driven performance with DC rotary compressor and Gold Fin® corrosion resistance.

• Independent temperature and scheduling control in each zone.

• Long 25 ft pre‑charged line sets for flexible indoor unit placement.

• Includes DIYPRO® cable on indoor units for cleaner electrical installation.

Specifications

What’s Included

✔ 1 × 36,000 BTU 5-Zone DIY Condenser — 

DIY-MULTI5-36HP230D-O

• 36,000 BTU 5th Generation DIY® multi-zone condenser, 208/230V, 1-phase
• Supports up to 5 indoor zones from one outdoor unit
• Efficiency: 23 SEER2, 12 EER2, 9.9 HSPF2-4, 7.5 HSPF2-5
• Factory-charged with R-454B refrigerant (future-focused, lower GWP)
• Designed for MRCOOL 5th Gen DIY air handlers (6K–36K)
• Uses Quick-Connect® pre-charged line sets for true DIY installation
• SmartHVAC® app + Amazon Alexa + Google Assistant compatible
• DC inverter rotary compressor for quiet, efficient operation
• Gold Fin® corrosion-resistant outdoor coil
• Ideal for total coverage up to ~1,500 sq. ft. depending on layout

Electrical (Condenser):

• Voltage: 208/230V, 1-Phase, 60 Hz
• Minimum Circuit Ampacity (MCA): 30.5A
• Maximum Fuse / Breaker: 35A

✔ 1 × 9,000 BTU DIY Wall-Mount Air Handler — 

DIY-09-HP-WMAH-230D25-O

• 9,000 BTU wall-mount indoor unit, 208/230V
• Comfort coverage: up to ~400 sq. ft.
• Ideal for bedroom, office, nursery, or small bonus room
• Pairs with 1/4” × 3/8” R-454B Quick-Connect line sets (DIY25-1438-O)
• Very quiet with multiple fan speeds and Quiet Mode
• Follow Me® function uses the remote temperature for more accurate comfort where you are
• Dry Mode for humidity control in muggy weather
• Built-in WiFi, SmartHVAC® app, Alexa and Google Assistant compatible
• Includes DIYPRO® cable to simplify electrical installation and protect wiring

✔ 1 × 24,000 BTU DIY Wall-Mount Air Handler — 

DIY-24-HP-WMAH-230D25-O

• 24,000 BTU wall-mount indoor unit, 208/230V
• Comfort coverage: up to ~1,050 sq. ft.
• Excellent for large living rooms, open-concept areas, basements, or great rooms
• 2-ton capacity with ENERGY STAR® Certified efficiency
• Uses 3/8” × 5/8” R-454B Quick-Connect line sets (DIY25-3858-O)
• Ultra-quiet operation with five fan speeds
• Follow Me® and Dry Mode for smarter comfort & humidity control
• Built-in WiFi plus SmartHVAC® app, Alexa, and Google support
• Includes DIYPRO® cable for a clean, durable, code-friendly install

✔ 1 × 25ft R-454B Line Set (1/4” × 3/8”) — 

DIY25-1438-O

• 25-foot pre-charged R-454B Quick-Connect® line set
• Sized for 6K, 9K & 12K MRCOOL DIY indoor units
• 1/4” liquid line × 3/8” suction line
• Factory vacuum-sealed and pre-charged—no vacuum pump required
• Quick-Connect® fittings that thread directly onto the DIY condenser and 9K indoor unit 

✔ 1 × 25ft R-454B Line Set (3/8” × 5/8”) — 

DIY25-3858-O

• 25-foot pre-charged R-454B Quick-Connect® line set
• Sized for 24K & 36K MRCOOL DIY indoor units
• 3/8” liquid line × 5/8” suction line
• Pre-charged, sealed, fully vacuum-free
• Quick-Connect® threaded fittings designed to mate directly with the DIY outdoor and 24K indoor unit

Frequently Asked Questions (FAQ's)

1. Can I install this MRCOOL DIY bundle myself?

Yes. The DIYM236HPW03D07 bundle is designed for true DIY installation using MRCOOL’s pre-charged R-454B Quick-Connect® line sets—no vacuum pump, gauges, or refrigerant handling required.

2. How many zones can the DIY-MULTI5-36HP230D-O support?

This 36k condenser can support up to 5 indoor zones. This bundle uses 2 zones (9K + 24K), leaving room to add up to three more indoor units later.

3. What room sizes are the 9K and 24K air handlers best for?

• 9K air handler: up to about 400 sq. ft.
• 24K air handler: up to about 1,050 sq. ft.
  Actual coverage depends on insulation, windows, and climate.

4. What is the minimum and maximum breaker size for the condenser?

The condenser is rated for:

• Minimum Circuit Ampacity (MCA): 30.5A
• Maximum Fuse / Breaker: 35A

Always follow MRCOOL’s installation manual and local codes when selecting wire and breaker size.

5. How long are the included line sets?

This bundle includes:

• DIY25-1438-O: 25ft 1/4” × 3/8” line set (for the 9K indoor unit)
• DIY25-3858-O: 25ft 3/8” × 5/8” line set (for the 24K indoor unit)

6. Can I extend beyond 25 feet?

Yes. MRCOOL DIY coupler kits and additional pre-charged line sets can extend the runs, as long as you stay within the condenser’s maximum line length and design limits.

7. Is R-454B better than R-410A?

R-454B is a newer, more efficient, lower-GWP refrigerant that is replacing R-410A in many residential HVAC systems.

8. Is this system quiet enough for bedrooms?

Yes. The 9K and 24K indoor units feature Quiet Mode and low operating sound levels, making them ideal for bedrooms and living spaces.

9. Does this system dehumidify?

Yes. Use DRY MODE to focus on removing humidity while still keeping the space comfortable.

10. Can I control each zone separately?

Yes. Each indoor unit has its own remote and WiFi control, allowing independent temperature and scheduling for the 9K and 24K zones.

11. Does this bundle support smart home control?

Yes. The 5th Gen MRCOOL DIY units work with the SmartHVAC® app, Amazon Alexa, and Google Assistant.