What's in the box
- MRCOOL® 12K DIY® OuttaSight® 5th Gen Ceiling Cassette (230V)
- Wireless Remote Control
- Installation Accessories
- MRCOOL® Warranty
Free curbside shipping on eligible MRCOOL® systems across the continental U.S. Most products ship in 3–5 business days and arrive in 4–10 days, depending on your location. Freight carriers will call to schedule delivery.
Returns accepted within 30 days on new, unopened items in original packaging. A restocking fee of up to 35% may apply for HVAC equipment — we’ll always confirm before issuing a return authorization.
Each MRCOOL® system is backed by manufacturer warranty coverage as defined by product and model — typically 5–10 years on major components. Register your system after installation to activate full coverage.
Need help with sizing, voltage or compatibility? Email support@coolheatdirect.com — our U.S. team replies within one business day.
Manuals & documents
MODEL: DIYCASSETTE12HP-230D25-O
Powerful, Discreet Climate Control for Spaces up to 550 sq. ft.
The MRCOOL® DIY® Series 5th Generation OuttaSight® 12K BTU 230V One-Way Ceiling Cassette brings efficient, whisper-quiet comfort to spaces up to 550 sq. ft. Perfect for bedrooms, offices, and medium living areas, it installs seamlessly between standard 16" ceiling joists—including I-joists—for a clean, built-in look that saves space and enhances your room’s style.
Engineered for true DIY installation, this cassette connects to the MRCOOL® DIY® Quick Connect® line set, pre-charged with eco-friendly R-454B refrigerant—no vacuuming, no specialized tools, no hassle. The durable DIYPro™ cable adds extra protection against outdoor wear, pests, and yard equipment, making setup both simple and secure.
Control your comfort your way with the SmartHVAC® app, Amazon Alexa, Google Assistant, or the included wireless remote. Advanced filtration and the Elevation function keep air fresh and maintenance easy, while the Gold Fin® condenser protects against corrosion in humid or coastal conditions. Backed by MRCOOL’s industry-best warranty—including a Limited Lifetime Compressor Warranty—this 12K OuttaSight® Cassette is built to perform reliably for years to come.
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
Questions, answered
Everything homeowners ask before buying a MRCOOL® system.
Installation
Do I need an HVAC technician to install this?
No. MRCOOL® DIY systems are designed for homeowner installation. The pre-charged Quick Connect® line set means there's no refrigerant handling, no vacuum pump, and no special tools or license required.
How long does installation take?
Most single-zone systems go in within a few hours: mount the indoor air handler, set the outdoor condenser, connect the pre-charged line set, and power it on.
Do I need an electrician?
The system needs a dedicated circuit. Most homeowners have a licensed electrician add the breaker and disconnect — everything else you can do yourself.
Sizing & compatibility
What BTU size do I need?
As a rule of thumb: up to 400 sq ft → 9–12K BTU, 400–600 sq ft → 12–18K, 600–1,000 sq ft → 18–24K. Use the room-size guide above and factor in insulation, ceiling height and sun exposure.
Will it heat in winter?
Yes — these are heat pumps, so they heat and cool. Many MRCOOL® systems keep heating in sub-freezing temperatures; check each model's spec sheet for its low-temperature heating range.
115V or 230V — which do I need?
9K–12K units are usually 115V (standard outlet circuit); 18K and larger are typically 230V. The voltage is shown in the product options and specifications.
Warranty & support
What warranty is included?
MRCOOL® systems carry manufacturer warranty coverage — typically 5–10 years on major components when you register your system after installation.
How do I get help choosing or installing?
Email support@coolheatdirect.com — our U.S. team replies within one business day with sizing, voltage and compatibility help.
Shipping & returns
How fast does it ship?
Most products ship in 3–5 business days with free curbside delivery in the continental U.S. The freight carrier calls to schedule your delivery.
Can I return it?
Returns are accepted within 30 days on new, unopened items in original packaging. A restocking fee may apply to HVAC equipment — we always confirm before issuing a return authorization.
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