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

Product Description 
Model: DIYM236HPW03D07
 
MRCOOL DIYM236HPW03D07 – 36k 5th Gen DIY Multi-Zone Bundle with 9K + 24K & 25ft Line Sets
The MRCOOL DIYM236HPW03D07 bundle gives you serious two-zone comfort with maximum flexibility. It combines the 36,000 BTU DIY-MULTI5-36HP230D-O 5th Gen multi-zone condenser with a 9,000 BTU wall-mount air handler, a 24,000 BTU wall-mount air handler, and two 25-foot pre-charged R-454B Quick-Connect® line sets (DIY25-1438-O and DIY25-3858-O).
The 9K indoor unit is perfect for a bedroom, office, or small flex space up to about 400 sq. ft., while the 24K indoor unit is built for larger spaces up to about 1,050 sq. ft. like living rooms, basements, or great rooms. Because you get 25 ft of line set to each indoor unit, you can place them where they actually work best—even when the condenser has to sit around the corner or further from the main living space.
Everything connects using MRCOOL’s pre-charged R-454B Quick-Connect® line sets, so installation is designed for serious DIYers: no vacuum pump, no gauges, no refrigerant handling.
 
What’s Included in the MRCOOL DIYM236HPW03D07 Bundle
✔ 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

Why This 36k 9K + 24K + 25ft Line Set Bundle Is So Strong 
This configuration is perfect when:

You need one smaller zone (bedroom/office) and one large main zone (living room/basement)
The condenser can’t sit right behind the wall—25 ft line sets let you go around corners or to side/back yards
You want expansion room: the 36k condenser still has capacity for up to five total zones

 
It’s a killer setup for:

Small to mid-size homes with a primary living area + key bedroom
Homes without ductwork looking for a clean, quiet solution
ADUs, rentals, and in-law suites where DIY install saves serious money
Investors or flippers wanting a modern HVAC upgrade buyers recognize

 
Key Benefits of the DIYM236HPW03D07 System

True DIY install – Pre-charged R-454B Quick-Connect® line sets, no vacuum pump
High efficiency 5th Gen technology – Up to 23 SEER2 cooling performance
Future-ready R-454B refrigerant – Lower GWP than R-410A
Zoned comfort – Independent temperature and scheduling for 9K and 24K zones
Long 25 ft line sets – Maximum placement flexibility for both indoor units
Smart control – App, WiFi, Alexa, and Google compatibility included
Quiet operation – Bedroom-friendly sound levels
Expandable platform – Add more indoor units later (up to 5 total zones)
Eligible for the care kit program

  
FAQ – MRCOOL DIYM236HPW03D07 36k 5th Gen DIY Multi-Zone Bundle
 
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.
 
12. Will my warranty be valid if I buy from MRCOOL Direct?
Yes. MRCOOL Direct is an authorized MRCOOL dealer, so your warranty is fully supported when installed and registered properly.
  
13. What warranties come with this system?
Typical MRCOOL DIY coverage includes:
 

5-Year Parts Warranty
7-Year Compressor Warranty
Eligible for the care kit program

14. Is this a good setup for a main living area and bedroom?

Yes. A 9K + 24K paired with a 36k condenser is an excellent two-zone layout for a main living space plus a key bedroom or office.
 
15. Do I need an electrician to install the power?
If you are not comfortable working with 208/230V electrical, you should hire a licensed electrician to wire the breaker, disconnect, and condenser.
 
Why Buy From MRCOOL DIRECT?
When you order from MRCOOL Direct, you get:

✅ Authorized MRCOOL dealer – Your warranty is protected
✅ Factory-fresh inventory – No refurbished, no resold, no mystery units
✅ Fast U.S. shipping – Most in-stock orders ship in 1–3 business days
✅ Financing options – Make high-efficiency comfort more affordable
✅ Real support – Help with sizing, bundle selection, line sets, and DIY questions
✅ No third-party marketplace sellers – Only genuine MRCOOL equipment from a trusted dealer

 
BUY DIRECT!
Feel Free to call us anytime. Family Friendly help just a dial away. We love talking HVAC615-553-8118
 
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