Matthew has been working with tools his entire life. Rebuilding his first engine at 15, he's spent years in the diesel mechanic industry, repaired complex conveyor systems, and mastered hands-on troubleshooting.
Having served as the sole Telebelt mechanic in the Midwest for three years, Matthew possesses deep, practical knowledge of heavy equipment and machinery.
If you’re unsure about what you need, he can walk you through the entire process — from choosing the right tool to securing the best price.
*Please Note: This timeline is an estimate. Certain products may require an additional 1 week for manufacturing. Please speak with your sales rep, Matthew, for official details and confirmation before placing your order.
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MRCOOL® DIY® 5th Gen 3-Zone Ceiling Cassette Mini Split (18K+18K+18K)
The MRCOOL® DIY® 5th Generation 54,000 BTU 3-Zone Ceiling Cassette Mini Split delivers maximum commercial-grade comfort by pairing a powerful 6-zone capable 55K BTU condenser with three symmetrical 18,000 BTU OuttaSight™ 1-way ceiling cassettes for fast, vacuum-free installation and heavy-duty climate control across three expansive residential or commercial spaces.
System Highlights
Symmetrical High-Capacity Output: Three heavy-duty 18,000 BTU cassettes deliver a massive 54,000 BTU total heating and cooling capacity, effortlessly conditioning three expansive zones between 501 and 750 sq. ft. each.
OuttaSight™ Architectural Design: Flush-mount ceiling cassette profile sits discreetly between standard ceiling joists, preserving valuable wall space while maintaining a sleek, low-profile footprint of 50.31" W x 13.19" D.
1-Way Directional Airflow: Precision louver control directs high-velocity conditioned air across large rooms for even thermal distribution without direct drafts or dead zones.
Expandable 55K Condenser Chassis: Deploys out of the box as a high-output tri-zone system, leaving immense reserve headroom to hook up three additional handlers as your building layout scales.
True DIY Installation Workflow: Patented pre-charged Quick Connect® lines completely eliminate conventional line evacuation, vacuuming, and professional trade labor requirements.
Engineered for properties that demand maximum, commercial-grade ceiling cassette tonnage across three large zones, offering ultimate long-term expansion flexibility from a single centralized 55K condenser framework.
Technical Specifications
Total Connected Capacity
54,000 BTU (18K + 18K + 18K Ceiling Cassettes)
Condenser Model
DIY-MULTI6-55HP230D-O (6-Zone Capable)
Electrical Interface Requirements
208–230V, 1 Phase, 60 Hz
Refrigerant Type
R-454B (Pre-Charged Eco-Friendly)
Industry Compliance Certifications
UL Listed, ETL Listed, ENERGY STAR, AHRI Certified
Zone Configuration & Performance Metrics
Specification / Feature
Zone 1: 18K Cassette
Zone 2: 18K Cassette
Zone 3: 18K Cassette
Cooling / Heating Output
18,000 BTU
18,000 BTU
18,000 BTU
Coverage Area
501 to 750 sq. ft.
501 to 750 sq. ft.
501 to 750 sq. ft.
Lineset Interconnect Size
1/4" Liquid • 1/2" Suction
1/4" Liquid • 1/2" Suction
1/4" Liquid • 1/2" Suction
Lineset Length Options
16 ft, 25 ft, 35 ft, or 50 ft
16 ft, 25 ft, 35 ft, or 50 ft
16 ft, 25 ft, 35 ft, or 50 ft
Unit Dimensions & Weight
50.31"W x 13.19"D x 8.98"H (45 lbs)
50.31"W x 13.19"D x 8.98"H (45 lbs)
50.31"W x 13.19"D x 8.98"H (45 lbs)
Advanced Engineering & Warranty
Gold Fin® Corrosion Protection: Advanced clear-coat protective barrier shields the exterior condenser coil against extreme humidity and harsh coastal climates.
DC Inverter Drive Architecture: The continuous variable-speed rotary inverter compressor scales its operating frequency down precisely to match ambient thermal loads, completely avoiding costly current draw spikes.
Smart Ecosystem Control: Full out-of-the-box integration via Amazon Alexa, Google Assistant, and the dedicated SmartHVAC mobile app for remote multi-zone scheduling and mode adjustments.
7-Year Compressor Warranty: Commercial-grade structural factory backing ensuring the heart of your outdoor condenser system remains protected against manufacturing defects.
5-Year Parts Protection Framework: Comprehensive hardware replacement coverage across internal circuit boards and critical operational components.
Key Information
Order Cutoff Time: 2:00 PM EST
Order Handling Time: 1–3 business days (Monday–Friday)
Transit Time: 1–7 business days (Monday–Friday)
Total Estimated Delivery Time: 3–11 business days (Monday–Friday)
Shipping Availability: Free Shipping On some Items In The Contiguous United States only
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Lincoln Lakes Ind | Lincoln Lakes Industries LLCField Verified
Thanks for the service!
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Stuart Casterlin | Stuart Casterlin Custom Cabinets and Fine Woodworking, Inc.Field Verified
Both Tools Work Great
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Mark D. | Machine Shop ForemanField Verified
Heavy Duty & Precise
"Brought this Jet 16" x 40" Engine Lathe into the shop recently and it’s an absolute beast. The 3-1/8" spindle bore is exactly what we needed for turning larger bar stock, and the geared head runs incredibly smooth from 25 all the way up to 1,800 RPM. It handles our heavy daily metalwork without breaking a sweat, and you can see how solid the build is right in the photo. If you need a reliable 3-phase lathe that holds tight tolerances all day, grab this bad boy. Worth every penny."
"I believe they are working well judging by none of the guys have said anything about them other than a thank you for swapping them out for them hahah. So thanks for checking in."
