MRCOOL DIY 5th Gen 36,000 BTU 5-Zone Ductless Mini Split Heat Pump System Bundle

MRCOOL DIY 5th Gen 36,000 BTU 5-Zone Ductless Mini Split Heat Pump System Bundle

The MRCOOL DIY® 5th Gen 36,000 BTU 5-Zone Ductless Mini Split Heat Pump System Bundle is a complete multi-zone climate control package engineered for homeowners who want whole-home comfort with true DIY installation convenience. This 5-zone system combines a powerful 36,000 BTU multi-zone condenser with a set of indoor air handlers sized for different room types, offering customized heating and cooling throughout your living or working spaces. It provides flexible zoning for bedrooms, living rooms, bonus areas, basements, and more — all without needing specialized HVAC tools or professional installers.

Designed with MRCOOL’s advanced QuickConnect® pre-charged line sets, this system eliminates the need for vacuum pumps and refrigerant handling, simplifying the install process. The use of R-454B refrigerant supports reduced environmental impact while delivering consistent performance. Built-in smart control compatibility allows you to manage your comfort via mobile app or integrate with smart home assistants. With DC inverter technology and durable construction, this system balances efficiency, quiet operation, and long-term reliability.

Each indoor unit included in the bundle has its own wireless remote control for easy independent zone adjustment. The outdoor condenser features corrosion-resistant protection and robust inverter performance, enabling efficient year-round heating and cooling. Backed by solid manufacturer warranty coverage, this MRCOOL DIY® 5-Zone bundle brings professional-grade zoning performance with the simplicity of a homeowner-installed system.

Features

Efficiency and performance

• High seasonal efficiency reduces electric use, especially compared to older equipment in many homes. Exact SEER2/HSPF2 numbers are manufacturer‑specified for the 5th‑gen condensers; the 5th‑gen line emphasizes higher efficiency than previous MRCOOL generations.  
• Strong heating even in cold weather with inverter heat pump tech and smart controls—meaning more usable heating hours and less reliance on costly backup heat.

Lower‑impact refrigerant

• Uses R‑454B, a newer, lower‑global‑warming‑potential refrigerant relative to older common blends. This aligns with industry moves toward more eco‑friendly options and long‑range regulation compliance. Third‑party installers and sellers highlight R‑454B as a key upgrade in 5th‑gen systems.  

Smart, modern controls

• SmartHVAC app + voice assistants built into the platform allow scheduling, zone management, and monitoring from anywhere.
• Follow‑Me and multiple modes to tailor airflow, humidity control, and quiet operation to the needs of each room.

Installation simplicity & safety

• Pre‑charged Quick‑Connect line sets mean no refrigerant filling or vacuum pumps for the install—huge savings in tools, time, and complexity.
• DIYPro cable and improved controls reduce the need for conduit and improve system communication, as noted in 5th‑gen updates.  

Specifications

Indoor air handlers

• 6k unit: compact, fits 200‑sq‑ft spaces; great for secondary areas or smaller bedrooms
• 18k unit: large coverage, up to roughly 800 sq ft; ideal for main rooms or multipurpose areas
• Both models are wall‑mount, include remote control, support smart app, and have reusable filters for ongoing savings

Linesets

• 25‑ft length for each connection type, enabling flexible placement where wall distances or exterior run length require it
• Pre‑charged with R‑454B; Quick‑Connect fittings for easy, safe, and fast hookup

What’s Included

1. Outdoor condenser 

• Model: DIY‑MULTI5‑36HP230D‑O
• Type: 36k BTU, 5‑zone multi‑split condenser, 230V
• Coverage of roughly 1,500 sq ft across up to five rooms when paired with matching indoor units.
• High‑efficiency design and smart control compatibility from MRCOOL’s 5th Generation line.

2. Indoor air handlers                                                                       1 × 6k BTU wall‑mount

• Model: DIY‑06‑HP‑WMAH‑230D25‑O
• Coverage up to ~200 sq ft, perfect for smaller bedrooms, offices, or closets.
• 1 × 18k BTU wall‑mount
  
• Model: DIY‑18‑HP‑WMAH‑230D25‑O
• Coverage up to ~800 sq ft, a powerful option for larger rooms, open areas, or main living spaces.
• Both use MRCOOL’s Quick‑Connect fittings, designed for fast coupling to indoor and outdoor units without refrigerant loss or vacuuming, streamlining DIY installs.

What sets it apart:

• Real DIY, not just DIY‑friendly. Pre‑charged R‑454B Quick‑Connect lines remove the need for a vacuum pump or refrigerant handling during installation, cutting labor time, tools, and hassle.
• Industry‑leading efficiency for a system this size. Designed to hit very high SEER2 and HSPF2 ratings for strong cooling and heating performance, so monthly energy costs stay lower than many traditional systems.
• Smart app control plus voice assistants. Use MRCOOL’s app or your Amazon Alexa / Google Home for hands‑free comfort control, scheduling, and energy monitoring.
• Future‑ready refrigerant and controls. Uses R‑454B, a lower‑impact refrigerant compared to older common blends, paired with an improved control cable and smart features introduced with MRCOOL’s 5th‑gen lineup. Independent installer outlets note the 5th‑gen upgrade focuses on eco‑friendliness, higher efficiency, and enhanced controls.  

The result: professional‑grade comfort across five zones, installed by a homeowner, without compromising energy efficiency or long‑term reliability.

Where this bundle is best

• Small‑to‑mid homes or large single‑level residences
• Additions, garages, in‑law suites, or upstairs conversions where multiple rooms need individual control
• Owners who want to save on installation costs but still demand premium efficiency, quiet, and smart controls
• Markets where higher‑efficiency systems and newer refrigerants are a priority for regulations or future resale value