MRCOOL® 36k 5th Gen DIY® Multi-Zone Bundle 12K + 18K with Dual 25ft Line Sets (230V) R-454B — DIYM236HPW05D07

Product Description 

Model: DIYM236HPW05D07

The MRCOOL DIYM236HPW05D07 bundle is built for homeowners who need a two-zone 5th Gen system with both indoor units located farther from the outdoor condenser. You get a perfectly matched 36k multi-zone platform, one 12K zone, one 18K zone, and two 25 ft pre-charged line sets, all designed for true DIY installation.

 

This bundle combines the DIY-MULTI5-36HP230D-O 36,000 BTU condenser with:

• One 12,000 BTU wall-mount air handler (DIY-12-HP-WMAH-230D25-O) – up to ~550 sq. ft.
• One 18,000 BTU wall-mount air handler (DIY-18-HP-WMAH-230D25-O) – up to ~800 sq. ft.
• One 25 ft R-454B Quick-Connect line set (DIY25-1438-O) – 1/4” × 3/8” for the 12K
• One 25 ft R-454B Quick-Connect line set (DIY25-1412-O) – 1/4” × 1/2” for the 18K

 

Total, this bundle can comfortably handle around 1,300–1,350 sq. ft. in many homes, depending on layout, insulation, and climate. It’s ideal when both rooms are not right next to the condenser, such as opposite sides of a house, upper floors, or remote living spaces.

As always with MRCOOL DIY, the line sets are factory pre-charged with R-454B refrigerant and use Quick-Connect® fittings, so you can install the system without pulling a vacuum or handling refrigerant when you follow MRCOOL’s instructions.

 

 

What’s Included in the MRCOOL DIYM236HPW05D07 Bundle

 

✔ 36,000 BTU 5th Gen DIY Multi-Zone Condenser — 

DIY-MULTI5-36HP230D-O

• 36,000 BTU, 5-zone ready multi-zone heat pump condenser
• Supports connecting up to five indoor units on one outdoor
• High efficiency: 23 SEER2, 12 EER2, 9.9 HSPF2-4, 7.5 HSPF2-5
• Uses R-454B, MRCOOL’s next-gen refrigerant
• Works with MRCOOL DIY indoor units from 6K–36K BTU
• Quick-Connect® ports for pre-charged line sets
• SmartHVAC® app integration plus Alexa & Google Assistant compatibility
• DC inverter rotary compressor for efficient, quiet modulation
• Gold Fin® corrosion-resistant outdoor coil
• Ideal total coverage up to about 1,500 sq. ft. in many configurations

 

Condenser Electrical Specs

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

 

✔ 12,000 BTU DIY Wall Mount Air Handler — 

DIY-12-HP-WMAH-230D25-O

• 12,000 BTU 5th Gen DIY ductless mini split air handler
• Ideal for areas up to about 550 sq. ft.
• Great for bedrooms, offices, bonus rooms, or smaller living spaces
• Pairs with the included DIY25-1438-O 25 ft line set
• Comes with DIYPRO® cable to simplify electrical routing

Comfort & Control:

• Wireless remote included
• SmartHVAC® app for iOS & Android
• Amazon Alexa & Google Assistant support
• Follow Me® temperature sensing at the remote
• Dry Mode to help control humidity
• Quiet Mode, oscillating louvers, and multi-speed fan

 

 

✔ 18,000 BTU DIY Wall Mount Air Handler — 

DIY-18-HP-WMAH-230D25-O

• 18,000 BTU 5th Gen DIY ductless heat pump air handler
• Ideal for larger rooms up to about 800 sq. ft.
• Perfect for living rooms, open-concept spaces, or big master suites
• Uses larger 1/2” suction line and pairs with DIY25-1412-O
• Includes DIYPRO® cable for a cleaner install

 

Comfort & Control:

• Wireless remote with Follow Me® function
• SmartHVAC® app control on phone or tablet
• Works with Alexa and Google Assistant
• Dry Mode, fan-only mode, oscillation, and Quiet Mode

Key Specs (18K air handler):

• Tonnage: 1.5 Ton
• Voltage: 208/230V, 1-phase, 60 Hz
• Max Fuse Breaker (air handler circuit): 15A
• Min Circuit Ampacity: 3A
• Energy Star, UL, ETL, AHRI certified

 

 

✔ 25 ft 1/4” × 3/8” Quick-Connect Line Set — 

DIY25-1438-O

• 25 ft pre-charged R-454B line set
• Size: 1/4” liquid × 3/8” suction
• Designed for 6K, 9K & 12K DIY indoor units
• Fully pre-charged with 2.12 oz R-454B (per manufacturer data)
• Quick-Connect® fittings—no vacuum pump when installed per MRCOOL instructions
• Perfect match for the 12K DIY air handler when it’s farther from the condenser

 

 

✔ 25 ft 1/4” × 1/2” Quick-Connect Line Set — 

DIY25-1412-O

• 25 ft pre-charged R-454B line set
• Size: 1/4” liquid × 1/2” suction
• Designed for 9K, 12K & 18K DIY indoor units
• Pre-charged with 2.12 oz R-454B
• Quick-Connect® fittings for fast DIY installation
• Ideal for the 18K DIY air handler with a longer run from the outdoor unit

 

 

Why Choose the DIYM236HPW05D07 Layout?

This version of the 12K + 18K bundle is designed when both indoor units need longer runs:

• 12K zone with a 25 ft run
• 18K zone with a 25 ft run

That makes it a very strong option for:

• Split-level homes
• Condenser mounted on the back or side of the house while rooms are farther away
• Situations where you want more flexibility in placement for both indoor units

You still get:

• True DIY installation of the refrigerant circuit
• Separate temperature control for each zone
• R-454B refrigerant for a more future-forward system
• Expandable 36k 5-zone platform for future zones

 

FAQ – MRCOOL DIYM236HPW05D07 36k 5th Gen DIY Multi-Zone Bundle (12K + 18K, Dual 25ft Line Sets)

 

1. What’s the difference between DIYM236HPW05D01 and DIYM236HPW05D07?

The DIYM236HPW05D07 bundle includes two 25 ft line sets (one for the 12K and one for the 18K). The 05D01 version uses a 16 ft line set for the 12K and a 25 ft line set for the 18K.

 

2. Is this still a true DIY system?

Yes. Both line sets are factory pre-charged with R-454B and use MRCOOL’s Quick-Connect® fittings. When you follow MRCOOL’s instructions, you don’t need vacuum pumps or refrigerant gauges.

 

3. What breaker size do I need for the outdoor unit?

For the DIY-MULTI5-36HP230D-O condenser:

• Minimum Circuit Ampacity (MCA): 30.5A

• Maximum Fuse/Breaker: 35A

Always have a licensed electrician size and install the circuit to local code and MRCOOL’s manual.

 

4. How much space can this bundle heat and cool?

Approximate coverage:

• 12K zone: up to ~550 sq. ft.

• 18K zone: up to ~800 sq. ft.

Total around 1,300–1,350 sq. ft., depending on climate, insulation, ceiling height, and layout.

 

5. Can I add more zones later?

Yes. The 36k 5-zone condenser can support additional MRCOOL DIY indoor units as long as you stay under MRCOOL’s total BTU and port limits.

 

6. Why dual 25 ft line sets?

This configuration is chosen when both zones are farther from the outdoor unit, giving you more flexibility in where you mount the indoor heads.

 

7. What refrigerant does this bundle use?

Every component in this bundle uses R-454B.

 

8. Do both zones have independent temperature control?

Yes. The 12K and 18K air handlers each have their own remote and WiFi control, so you can set separate temperatures, fan speeds, and schedules.

 

9. Will this system help with humidity?

Yes. Both indoor units have DRY MODE to reduce excess humidity while cooling.

 

10. Is this bundle quiet enough for bedrooms and living areas?

Yes. The units include Quiet Mode and low fan speeds designed to keep noise down, making them suitable for bedrooms, offices, and living spaces.

 

11. Does it support Alexa and Google Assistant?

Yes. With the SmartHVAC® module and app, the system works with Amazon Alexa and Google Assistant.

 

12. What warranties apply?

When properly installed and registered:

• 5-year parts warranty

• 7-year compressor warranty

• Extended Limited Lifetime Replacement Warranty when enrolled in the MRCOOL® Care Program (see MRCOOL’s terms).

 

 

Why Buy From MRCOOL DIRECT?

When you order from MRCOOL Direct, you get:

• ✅ Authorized MRCOOL dealer – Your warranty is protected
• ✅ Factory-fresh units – No refurbished or mystery sources
• ✅ Fast U.S. shipping – Most in-stock items ship in 1–3 business days
• ✅ Financing options – Make high-efficiency comfort more affordable
• ✅ Real product support – Help with sizing, line set selection, and DIY questions
• ✅ No third-party marketplace middlemen – Just genuine MRCOOL systems from a trusted dealer

BUY DIRECT!

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