MRCOOL® DIY® 5th Gen Multi-Zone 3-Zone 36,000 BTU 23 SEER2 (6K + 6K + 12K)- 3x 25ft line sets- Ductless Mini-Split Air Conditioner & Heat Pump — DIYM336HPW00D21

Product Description 

Model: DIYM336HPW00D21

The MRCOOL® DIYM336HPW00D21 is a high-efficiency 3-zone ductless mini-split system designed for homeowners who want precision zoning, lower energy bills, and true DIY installation—without sacrificing performance or reliability.

At the heart of the system is the MRCOOL® DIY® 5th Generation 36,000 BTU multi-zone condenser, paired with two 6,000 BTU indoor air handlers and one 12,000 BTU indoor air handler. This layout is ideal for bedrooms, offices, nurseries, guest rooms, and medium living spaces, allowing each area to be conditioned independently for maximum comfort and efficiency.

Installation is dramatically simplified using MRCOOL®’s patented DIY® QuickConnect® technology. The included three 25-ft pre-charged QuickConnect® line sets arrive factory-sealed with R-454B refrigerant, eliminating the need for vacuum pumps, gauges, or EPA-licensed refrigerant handling. The included DIYPRO® cable removes the need for electrical conduit, making installs faster, cleaner, and more durable.

With DC inverter technology, Gold Fin® corrosion-resistant coils, Follow Me® temperature sensing, and full MRCOOL® Smart HVAC Controller® app integration, this system delivers quiet operation, reliable year-round comfort, and serious energy savings—all in a package built for real DIY success.

KEY FEATURES & PERFORMANCE HIGHLIGHTS

• 36,000 BTU total system capacity
• 3 independently controlled comfort zones
• (2) 6K + (1) 12K BTU wall-mounted air handlers
• 23 SEER2 high-efficiency rating
• DC inverter variable-speed compressor
• DIY® QuickConnect® pre-charged line sets
• Extended 25-ft line-set reach for flexible layouts
• DIYPRO® cable (no conduit required)
• Gold Fin® anti-corrosion protection
• Follow Me® remote-based temperature sensing
• MRCOOL® Smart HVAC Controller® App
• Alexa® & Google Home® compatibility
• ENERGY STAR® & AHRI certified

ELECTRICAL REQUIREMENTS & BREAKER INFORMATION

Outdoor Condenser — DIY-MULTI5-36HP230D-O

• Voltage: 208 / 230V
• Phase: Single-Phase
• Frequency: 60 Hz
• Minimum Circuit Ampacity (MCA): 30.5 Amps
• Maximum Breaker Size: 35 Amps
• Dedicated Circuit Required: Yes

DIMENSIONS & WEIGHT

Outdoor Condenser

• Width: 37.24 in
• Height: 31.89 in
• Depth: 16.14 in
• Net Weight: ~169 lbs

6K Indoor Air Handlers (each)

• Width: 31.57 in
• Height: 11.69 in
• Depth: 7.44 in
• Net Weight: ~24.5 lbs

12K Indoor Air Handler

• Width: 31.57 in
• Height: 11.63 in
• Depth: 7.44 in
• Net Weight: ~24.5 lbs

WARRANTY COVERAGE

• 5-Year Parts Warranty
• 7-Year Compressor Warranty
• eligible for the MRCOOL® Care kit program 

WHAT’S INCLUDED IN THIS BUNDLE

• ✔ MRCOOL® DIY® 36,000 BTU Multi-Zone Outdoor Condenser
• ✔ (2) 6,000 BTU Wall-Mounted Indoor Air Handlers
• ✔ (1) 12,000 BTU Wall-Mounted Indoor Air Handler
• ✔ (3) 25-ft DIY® QuickConnect® Line Sets (1/4 × 3/8)
• ✔ DIYPRO® communication cable
• ✔ Wireless remotes for each indoor unit
• ✔ Mounting hardware & installation manuals

Smart phone not included.

FREQUENTLY ASKED QUESTIONS (FAQ)

Why choose 25-ft line sets instead of 16-ft?

They provide greater flexibility for condenser placement and longer installation runs.

Can each room be controlled separately?

Yes. Each indoor unit operates independently with its own thermostat control.

Is professional installation required?

No. This system is designed for true DIY installation using QuickConnect® fittings.

Does it support smart home control?

Yes. Compatible with Alexa®, Google Home®, and the MRCOOL® Smart HVAC Controller® App.

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 MRCOOL® dealer.

BUY DIRECT!

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615-553-8118

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