MRCOOL 36k 5th Gen DIY Multi‑Zone Bundle with Dual 12K Air Handlers & 25ft Line Sets (230V) R‑454B — DIYM236HPW04D06

MRCOOL 36k 5th Gen DIY Multi‑Zone Bundle with Dual 12K Air Handlers & 25ft Line Sets (230V) R‑454B — DIYM236HPW04D06

The MRCOOL 36k 5th Gen DIY Multi‑Zone Bundle with Dual 12K Air Handlers & 25ft Line Sets (230V) R‑454B — DIYM236HPW04D06 delivers powerful, efficient two‑zone heating and cooling comfort designed for modern homes. At its core is a 36,000 BTU 5th Generation DIY multi‑zone condenser, engineered to support up to five indoor units for future expansion. Each of the two included 12,000 BTU wall‑mount air handlers is perfectly matched to condition spaces up to approximately 550 sq. ft., making this bundle ideal for bedrooms, home offices, living areas, or rental suites. The generous 25 ft pre‑charged Quick‑Connect line sets give flexible placement options for both indoor and outdoor units without compromising performance.

Built around MRCOOL’s true DIY philosophy, this system arrives ready to install with factory‑sealed R‑454B line sets — no vacuum pump, gauges, or refrigerant handling required. Smart controls are integrated via the MRCOOL SmartHVAC® app, giving you convenient zone‑by‑zone control from your smartphone, tablet, or voice assistant through Amazon Alexa and Google Assistant. Quiet Mode, Follow Me® temperature sensing, and DRY Mode enhance comfort and convenience throughout your home.

Energy efficiency meets adaptability in this comprehensive bundle. With up to 23 SEER2 and versatile DC inverter technology, you’ll enjoy year‑round comfort with reduced energy consumption and reliable performance. Designed for both new installs and upgrades, this MRCOOL system sets a high standard for DIY‑friendly HVAC solutions.

Features

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

• Dual 12,000 BTU wall‑mount air handlers ideal for mid‑sized rooms (~550 sq. ft. each)

• Two 25 ft pre‑charged R‑454B Quick‑Connect line sets simplify DIY installation

• SmartHVAC® app control with Amazon Alexa and Google Assistant compatibility

• Follow Me® temperature sensing, Quiet Mode, and DRY Mode on air handlers

• DC inverter rotary compressor for efficient and quiet operation

• Gold Fin® corrosion‑resistant outdoor coil

• True DIY installation — no vacuum pump or refrigerant tools required

Specifications

What’s Included

✔ 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 a single outdoor unit
• Efficiency up to 23 SEER2, 12 EER2, 9.9 HSPF2-4, 7.5 HSPF2-5
• Charged with R-454B (more efficient, lower GWP than R-410A)
• Works with MRCOOL 5th Gen DIY indoor units from 6K to 36K BTU
• Uses Quick-Connect® pre-charged line sets — no evacuation required
• SmartHVAC® app control + Amazon Alexa + Google Assistant
• DC inverter rotary compressor for quiet, modulating operation
• Corrosion-resistant outdoor coil with Gold Fin® coating
• Designed to cover up to roughly 1,500 sq. ft. depending on layout & 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

• 12,000 BTU 5th Gen DIY ductless heat pump wall mount, 208/230V
• Designed for spaces up to ~550 sq. ft. each
• Ideal for bedrooms, offices, bonus rooms, small living rooms, or rental suites
• True DIY install when paired with MRCOOL pre-charged Quick-Connect® line sets
• Includes DIYPRO® cable to eliminate separate conduit and protect wiring

Comfort & control:

• Wireless remote with LCD
• SmartHVAC® app (iOS & Android)
• Works with Amazon Alexa and Google Assistant
• Follow Me® function for remote-based temperature sensing
• Dry Mode for better humidity control
• Quiet Mode and multiple fan speeds for bedroom-friendly sound

Key specs (per 12K air handler):

• Mount type: Wall
• Voltage: 208/230V, 1-phase, 60 Hz
• Max coverage area: ~550 sq. ft.
• Oscillation: Yes
• Filter type: Reusable
• Fan only option: Yes
• Quiet Mode & Auto Cool: Yes
• WiFi & app ready: Yes
• Certifications: UL listed, ETL listed, AHRI certified
• Warranty when registered:
  
• 5-year parts
• 7-year compressor
• Extended Limited Lifetime replacement via MRCOOL® Care (per MRCOOL terms)

✔ 2 × 25 ft R-454B Quick-Connect Line Sets (1/4” × 3/8”) — 

DIY25-1438-O

• Two (2) × 25 ft pre-charged R-454B Quick-Connect® line sets
• Size: 1/4” liquid line × 3/8” suction line
• Designed for 6K, 9K & 12K MRCOOL DIY indoor units
• Factory vacuum-sealed and pre-charged with 2.12 oz of R-454B
• Quick-Connect** threaded fittings** that attach directly to the condenser and air handlers
• White insulated exterior with Bronze/Copper Metallic core
• 25 ft gives you flexible outdoor unit placement with fewer compromises on line routing

Frequently Asked Questions (FAQ's)

1. Can I install this system myself?

Yes. The DIYM236HPW04D06 bundle is designed for DIY installation with pre-charged R-454B Quick-Connect® line sets, so you don’t need a vacuum pump or refrigerant tools.

2. How many zones can the 36k condenser support?

The DIY-MULTI5-36HP230D-O can support up to 5 indoor units. This bundle uses two 12K units, so you can still add up to three more zones later.

3. What size rooms are the 12K air handlers best for?

Each 12K air handler is typically suited for spaces up to about 550 sq. ft., depending on insulation, ceiling height, and climate.

4. What breaker size does this system need?

The condenser is rated for:

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

Always follow MRCOOL’s installation manual and local electrical codes.

5. How long are the included line sets?

This bundle includes two 25 ft line sets (DIY25-1438-O), each 1/4” × 3/8”, pre-charged with R-454B.

6. Can I extend beyond 25 ft?

Yes. You can extend 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 restrictions.

7. What refrigerant does this system use?

All components in this bundle use R-454B, a next-generation refrigerant with higher efficiency and lower global warming potential than R-410A.

8. Is this system quiet enough for bedrooms?

Yes. The 12K indoor units have Quiet Mode and low sound levels, making them a solid option for bedrooms, nurseries, and home offices.

9. Does this system dehumidify?

Yes. Using DRY MODE, the system focuses on removing humidity while still providing cooling, which is ideal for humid climates.

 10. Can I control each 12K zone separately?

Absolutely. Each 12K air handler has its own remote and WiFi control, so you can set different temperatures and schedules for each room. You just can’t have one on heat and the other on A/C

11. Is smart home integration included?

Yes. The system works with the SmartHVAC® app, Amazon Alexa, and Google Assistant for voice and app-based control.

12. Is this bundle good for two bedrooms or a bedroom + office?

Yes. Dual 12K with 25 ft line sets is a killer layout for two similar-size rooms that both need serious comfort.

13. Do I need an electrician for the condenser power?

If you’re not comfortable with 208/230V electrical work, you should use a licensed electrician to install the breaker, disconnect, and wiring.