MRCOOL® DIY® Series 5th Gen OuttaSight® 12K BTU 230V One-Way Ceiling Cassette
MODEL: DIYCASSETTE12HP-230D25-O
Product Description
Powerful, Discreet Climate Control for Spaces up to 550 sq. ft.
The MRCOOL® DIY® Series 5th Generation OuttaSight® 12K BTU One-Way Ceiling Cassette delivers efficient, whisper-quiet heating and cooling with a low-profile, ceiling-mounted design. Ideal for bedrooms, offices, and medium living spaces up to 550 sq. ft., this cassette fits effortlessly between 16” ceiling joists—including I-joists—for a clean, modern appearance.
Designed for simple, 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 elements, pests, and yard equipment.
Easily control your indoor climate with multiple options: the SmartHVAC® app, Amazon Alexa, Google Assistant, or the included wireless remote. Featuring advanced air filtration and a convenient Elevation function for simple filter maintenance, this unit improves indoor air quality while keeping your space consistently comfortable.
Protected by a Gold Fin® corrosion-resistant condenser coating, this cassette is built for long-lasting performance—even in coastal or high-humidity environments. Plus, it’s backed by an industry-leading Limited Lifetime Compressor Warranty, 7-Year Compressor Warranty, and 5-Year Parts Warranty for complete peace of mind.
Why You’ll Love It
✅ Perfect for Medium Spaces — Ideal for bedrooms, offices, or dens up to 550 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 look.
✅ Smart-Home Ready — Full control via SmartHVAC® app, Alexa, or Google Assistant.
✅ Follow Me® Comfort — Wireless remote tracks your location to adjust temperature for personalized comfort.
✅ Quiet, Efficient Operation — Ultra-quiet DC inverter performance ranging from 24–41 dBA.
✅ Advanced Filtration & Elevation Filter Access — Cleaner indoor air and hassle-free filter changes.
✅ All-Season Performance — Dependable heating and cooling with 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® 12K 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 at a Glance
| Attribute | Details |
|---|---|
| Voltage | 208-230V |
| Phase | 1 |
| Cycle | 60 Hz |
| Mount Type | Ceiling |
| Color | White |
| Max Coverage Area | 550 sq. ft. |
| Air Flow Direction | 1-Way |
| Decibel Rating (Low/High) | 24 dBA / 41 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 & Manuals
Shipping Policy
At Cool Heat Direct, we offer free curbside delivery on all MRCOOL product orders via FedEx Ground, FedEx Freight, or trusted carriers depending on order size.
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Deliveries are made to the curbside — please arrange assistance for heavy or large items, as drivers do not carry items indoors or upstairs.
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Tracking details will be sent within 3–5 business days after placing your order.
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Freight shipments are scheduled directly by the carrier using the contact information you provide at checkout.
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Please inspect your shipment upon delivery and report any visible damage on the delivery receipt.
👉 Click here for our full Shipping Policy
Return Policy
We want you to love your purchase from Cool Heat Direct. If you need to return an item:
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Contact us within 30 days of delivery.
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Items must be unused, uninstalled, and in their original packaging.
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A 35% restocking fee applies to all approved returns.
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Accessories such as line sets, wall mounts, and couplers are non-returnable.
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Return shipping is the customer’s responsibility unless the item is damaged or defective on arrival.
To start a return, please email us at support@coolheatdirect.com with your order number and reason for return.
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