Featured Highlight｜MRCOOL® 36k 5th Gen DIY® Multi-Zone Bundle with Dual (12K + 12k) Air Handlers & (16ft + 16ft)Pre-Charged R-454B Line Sets (230V)-DIYM236HPW04D00

Product Description 
Model: DIYM236HPW04D00
 
MRCOOL DIYM236HPW04D00 – 36k 5th Gen DIY Multi-Zone Bundle with Dual 12K & 16ft Line Sets 
The MRCOOL DIYM236HPW04D00 bundle is a 5th Generation DIY multi-zone system built for homeowners who want two equal comfort zones and the ability to install it themselves. This package combines the 36,000 BTU DIY-MULTI5-36HP230D-O condenser with two 12,000 BTU 5th Gen wall-mount air handlers and two 16-foot pre-charged R-454B Quick-Connect® line sets (DIY16-1438-O).
Each 12K indoor unit can condition spaces up to about 550 sq. ft., making this bundle perfect for two bedrooms, two offices, bedroom + living area, or any layout where you want balanced dual-zone comfort. The 36k condenser supports up to 5 indoor units, so you still have room to expand the system later.
With MRCOOL’s pre-charged R-454B Quick-Connect® line sets, the system is designed for true DIY installation—no vacuum pump, no gauges, no refrigerant handling. Just mount, connect, torque, and open the valves according to the MRCOOL instructions.
 
What’s Included in the MRCOOL DIYM236HPW04D00 Bundle
✔ 1 × 36,000 BTU 5-Zone DIY Condenser — 
DIY-MULTI5-36HP230D-O 

36,000 BTU 5th Gen DIY® multi-zone condenser, 208/230V, 1-phase
Supports up to 5 indoor zones from one outdoor unit
High efficiency: 23 SEER2, 12 EER2, 9.9 HSPF2-4, 7.5 HSPF2-5
Factory-charged with R-454B refrigerant (more efficient, eco-friendlier than R-410A)
Works with 5th Gen DIY air handlers from 6K to 36K BTU
Quick-Connect® ports for pre-charged DIY line sets (no vacuuming required)
SmartHVAC® app control plus Amazon Alexa and Google Assistant support
DC inverter rotary compressor for quiet, modulating operation
Gold Fin® corrosion-resistant outdoor coil
Ideal total coverage up to around 1,500 sq. ft. depending on layout and climate

 
Electrical (Condenser):

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

 
✔ 2 × 12,000 BTU DIY Wall-Mount Air Handlers — 
DIY-12-HP-WMAH-230D25-O
(Two identical indoor units in this bundle.)

12,000 BTU 5th Gen DIY ductless mini-split heat pump air handler, 208/230V
Comfort coverage: up to ~550 sq. ft. per zone
Perfect for bedrooms, offices, bonus rooms, rental suites, or smaller living spaces
Designed for easy DIY installation with R-454B Quick-Connect® line sets (sold as DIY16-1438-O)
Includes DIYPRO® cable, eliminating the need for electrical conduit and improving durability
Operates as a full heat pump for year-round heating and cooling

 
Comfort & Control Features:

Wireless remote control included
SmartHVAC® app for iOS and Android
Amazon Alexa & Google Assistant compatible
Follow Me® function uses the remote’s sensor to help maintain the temperature where you are
Dry Mode helps reduce excess humidity
Quiet Mode for extra-low noise in bedrooms and offices
Multi-speed fan and auto modes for flexible comfort control

Specs (per 12K air handler):

Mount type: Wall
Voltage: 208/230V, 1-phase, 60 Hz
Max coverage: ~550 sq. ft.
Oscillation: Yes
Filter type: Reusable
Fan only option: Yes
Quiet Mode & Auto Cool: Yes
WiFi compatibility: Yes
App compatibility: Yes (iOS & Android)
UL & ETL listed, AHRI certified
Registered warranty: Extended Limited Lifetime*
Base parts warranty: 5 years
Base compressor warranty: 7 years

Net dimensions (approx): 31.57” W × 11.63” H × 7.44” D 

✔ 2 × 16ft R-454B Quick-Connect Line Sets (1/4” × 3/8”) — 
DIY16-1438-O
(Two line sets included, one for each 12K air handler.)

16-foot pre-charged R-454B Quick-Connect® line set
1/4” liquid line × 3/8” suction line
Sized for 6K, 9K & 12K MRCOOL DIY indoor units
Factory vacuum-sealed and pre-charged with 2.12 oz of R-454B
Quick-Connect® fittings on both ends for fast, no-vacuum installation
White insulated finish with Bronze/Copper Metallic line set core
Ideal when the condenser is on the same wall or just around one corner from the indoor unit

 
Why This Dual 12K 36k Bundle Is a Killer Setup
The DIYM236HPW04D00 configuration shines when:

You want two equal-sized comfort zones instead of one big / one small
You’re conditioning two similar rooms: two bedrooms, two offices, or bedroom + den
You prefer a balanced load across both zones, instead of oversizing any one space

 
It’s a great fit for:

Upstairs layouts with two key bedrooms
Bedroom + home office for work-from-home setups
ADUs, in-law suites, duplexes, and rental units
Small homes or apartments with two primary conditioned spaces

 
Key Benefits of the DIYM236HPW04D00 System

True DIY installation – Pre-charged R-454B Quick-Connect® line sets, no vacuum pump
High efficiency 5th Gen inverter performance (23 SEER2)
Future-ready R-454B refrigerant instead of legacy R-410A
Balanced dual 12K zoning – two equal zones for smoother comfort and load distribution
Smart control via app, WiFi, Alexa, and Google
Quiet operation suitable for bedrooms and offices
Expandable platform – 36k condenser supports up to 5 indoor units
Eligible for the care kit program

 
FAQ – MRCOOL DIYM236HPW04D00 36k 5th Gen DIY Multi-Zone Bundle (Dual 12K)
 
1. Can I install this MRCOOL DIY bundle myself?
Yes. This system is designed for DIY installation using pre-charged R-454B Quick-Connect® line sets. No vacuum pump or refrigerant handling is required if installed according to MRCOOL instructions.
  
2. How many zones can the DIY-MULTI5-36HP230D-O support?
The 36k multi-zone condenser can support up to 5 indoor units. This bundle uses two 12K air handlers, leaving capacity for up to three more zones later.
  
3. What room size is each 12K air handler designed for?
Each 12,000 BTU air handler is typically ideal for spaces up to about 550 sq. ft. depending on insulation, windows, and climate.
 
4. What breaker size does the condenser require?
The condenser electrical ratings are:

Minimum Circuit Ampacity (MCA): 30.5A

Maximum Fuse / Breaker: 35A 

Always follow MRCOOL’s installation manual and local electrical codes when selecting wire and breaker size.
  
5. How long are the included line sets?
This bundle includes two 16ft line sets (DIY16-1438-O), each 1/4” × 3/8”, pre-charged with R-454B.
  
6. Can I extend the 16ft line sets if needed?
Yes. You can extend runs with MRCOOL DIY coupler kits and additional pre-charged line sets, as long as you stay within the condenser’s maximum total line length and design limits.
 
7. What refrigerant does this system use?
This 5th Gen MRCOOL DIY system uses R-454B, which is more efficient and has a lower global warming potential than R-410A.
 
8. Is this system quiet enough for bedrooms?
Yes. The 12K air handlers feature Quiet Mode and low operating sound levels, making them suitable for bedrooms and home offices.
 
9. Does this system dehumidify as well as cool?
Yes. DRY MODE focuses on removing humidity while still providing cooling, which is very useful in humid climates.
 
10. Can I control each 12K zone separately?
Yes. Each indoor unit has its own remote and its own WiFi control, so you can set different temperatures and schedules for each room.
 
11. Does this bundle support smart home integration?
Yes. The system works with the SmartHVAC® App, Amazon Alexa, and Google Assistant for voice and app-based control.
  
12. Is my warranty 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 correctly.
 
13. What warranties are included?
Typical MRCOOL DIY coverage includes:

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

  
14. Is this bundle good for two bedrooms or a bedroom + office?
Absolutely. Dual 12K units are perfect for two similar-size rooms where you want equal comfort and independent temperature control.
  
15. Do I need an electrician to wire the condenser?
If you aren’t comfortable working with 208/230V circuits, you should hire a licensed electrician to install the breaker, disconnect, and power wiring.
 
Why Buy From MRCOOL DIRECT? 
When you buy from MRCOOL Direct, you get:

✅ Authorized MRCOOL dealer – Keeps your warranty safe
✅ Factory-fresh equipment – No refurbished or mystery units
✅ Fast U.S. shipping – Most in-stock orders ship in 1–3 business days
✅ Financing options – Make top-tier comfort more affordable
✅ Real MRCOOL expertise – Help with sizing, line sets, and DIY questions
✅ No third-party marketplace sellers – Just genuine MRCOOL systems 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
Family owned & USAs #1 MRCOOL Authentication Dealer.
 
 
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