MRCOOL® DIY® Series 5th Gen OuttaSight® 9K BTU 230V One-Way Ceiling Cassette
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MODEL: DIYCASSETTE09HP-230D25-O
Powerful, Discreet Climate Control for Spaces up to 400 sq. ft.
The MRCOOL® DIY® Series 5th Generation OuttaSight® 9K BTU One-Way Ceiling Cassette delivers efficient, whisper-quiet heating and cooling with a low-profile, ceiling-mounted design. Ideal for bedrooms, home offices, and small living areas up to 400 sq. ft., this cassette fits effortlessly between 16” ceiling joists—including I-joists—for a clean, modern appearance.
Designed for easy, DIY-friendly installation, this unit works with the MRCOOL® DIY® Quick Connect® pre-charged line set, filled with eco-friendly R-454B refrigerant, eliminating the need for vacuuming or specialized tools. The DIYPro™ cable adds extra protection against outdoor conditions, pests, and lawn equipment.
Take total control of your indoor climate with multiple options, including the SmartHVAC® app, Amazon Alexa, Google Assistant, or the included wireless remote. Featuring advanced air filtration and a convenient Elevation function for easy filter maintenance, this unit helps improve air quality while maintaining consistent comfort.
Protected by a Gold Fin® corrosion-resistant condenser coating, this cassette is built for lasting performance, even in coastal or high-humidity areas. Plus, it's backed by an industry-leading Limited Lifetime Compressor Warranty, a 7-Year Compressor Warranty, and a 5-Year Parts Warranty for long-term peace of mind.
Why You’ll Love It
✅ Perfect for Compact Spaces — Ideal for bedrooms, offices, or dens up to 400 sq. ft.
✅ True DIY Installation — Pre-charged Quick Connect® line sets and DIYPro™ cable mean no vacuuming or HVAC pro needed.
✅ Low-Profile, Seamless Ceiling Fit — Installs neatly between standard 16” joists for a clean, built-in appearance.
✅ Smart-Home Ready — Control via SmartHVAC® app, Alexa, or Google Assistant.
✅ Follow Me® Comfort — Wireless remote senses your location and adjusts temperature accordingly.
✅ Quiet, Efficient Operation — Ultra-quiet DC inverter performance from 24–38 dBA.
✅ Advanced Filtration & Elevation Filter Access — Cleaner indoor air and hassle-free filter changes.
✅ All-Season Performance — Reliable heating and cooling with smart Auto mode and multiple fan settings.
✅ Industry-Leading Warranty — Limited Lifetime Compressor Warranty (with registration), 7-Year Compressor Warranty, 5-Year Parts Warranty.
What’s Included:
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MRCOOL® 9K DIY® OuttaSight® 5th Gen Ceiling Cassette (230V)
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Wireless Remote Control
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Installation Accessories
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MRCOOL® Warranty
Specifications
Specifications at a Glance
| Attribute | Details |
|---|---|
| Voltage | 208-230V |
| Phase | 1 |
| Cycle | 60 Hz |
| Mount Type | Ceiling |
| Color | White |
| Max Coverage Area | 400 sq. ft. |
| Air Flow Direction | 1-Way |
| Decibel Rating (Low/High) | 24 dBA / 38 dBA |
| Refrigerant Type | R-454B |
| Liquid Line Size | 1/4" |
| Suction Line Size | 3/8" |
| Wi-Fi Enabled | Yes |
| App Compatibility | iOS & Android |
| Remote Control Included | Yes |
| AHRI & ETL Certified | Yes |
| Warranty | Lifetime Compressor*, 7-Year Compressor, 5-Year Parts |
| Net Dimensions (WxHxD) | 50.31” x 8.98” x 13.19” |
| Gross Dimensions (WxHxD) | 57.6” x 22.64” x 22.48” |
| Net Weight | 45 lbs |
| Gross Weight | 88 lbs |
Room Size & BTU Coverage Guide
Choosing the right BTU (British Thermal Unit) output ensures your space stays consistently comfortable all year round. Use this quick reference chart to match your room size with the recommended cooling and heating capacity for your MRCOOL® DIY® OuttaSight® Ceiling Cassette.
| BTU Rating | Ideal Room Size |
|---|---|
| 6,000 | 100–200 sq. ft. |
| 9,000 | 250–400 sq. ft. |
| 12,000 | 400–600 sq. ft. |
| 18,000 | 600–1,000 sq. ft. |
Important:
Always consider additional factors such as ceiling height, insulation quality, sun exposure, number of windows, climate, and the number of heat-producing appliances in your space when choosing the right system.
What You Need for a Complete System
This air handler requires pairing with:
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Compatible MRCOOL® DIY® 5th Gen Multi-Zone or Single-Zone Condenser
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Pre-Charged 25ft Quick Connect® Line Set (sold separately)
Optional Accessories:
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Additional Line Sets
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Line Set Coupler Kits
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Wireless Thermostat Controller
Important: Compatible with 5th Generation MRCOOL® DIY® Systems only.
Installation
Installation & Manuals
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