The MRCOOL® DIY® Series OuttaSight® 9k BTU Ceiling Cassette is perfect for any space and provide discreet and out of sight heating and cooling.
SKU DIYCASSETTE09HP-230C25
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Description
The MRCOOL® DIY® Series OuttaSight® 9k BTU Ceiling Cassette is perfect for any space and provide discreet and out of sight heating and cooling.
What's in the Box
Everything you need for a complete DIY 4th Gen system
The MRCOOL® DIY® Series OuttaSight® 9k BTU Ceiling Casset...
As described
Key Specifications
9000BTU
Cooling Capacity
208-230V
Voltage
40/35.5dBA
Noise Level
9000BTU
Heating Capacity
The MRCOOL® DIY® Series OuttaSight® 9k BTU Ceiling Cassette is perfect for any space and provide discreet and out of sight heating and cooling. — Model Details
What this specific model is sized for, how it installs, how it performs, and what it costs to run.
Room & Space Coverage — 9,000 BTU
The The MRCOOL® DIY® Series OuttaSight® 9k BTU Ceiling Cassette is perfect for any space and provide discreet and out of sight heating and cooling. delivers 9,000 BTU of cooling and heating capacity, sized for spaces up to 450 sq ft in standard 8-ft ceiling rooms with average insulation. At this capacity the unit targets small rooms, nurseries, tiny homes, enclosed porches, and dedicated zones that need precise temperature control without oversizing — oversized units short-cycle, which hurts humidity control and shortens compressor life.
Efficiency & Operating Cost
This unit is rated at 20.75 SEER. SEER2 measures seasonal cooling efficiency — higher is better — and 20.75 puts this in the premium efficiency tier. Running the unit 8 hours a day at full load draws roughly 104 kWh/month — about $17/month at the US average $0.16/kWh residential rate. Real-world draw is usually 30–50% lower because inverter compressors modulate down most of the time.
Power & Electrical Requirements
Power requirement: 208-230V 1-phase 60Hz (standard US residential 240V service). Minimum circuit ampacity is 3A with a maximum overcurrent protection of 15A. Wire the outdoor unit with 14 AWG copper on a dedicated 15A double-pole breaker (or single-pole at 120V), with a disconnect within sight of the condenser per NEC 440.14.
Install Difficulty — DIY-Friendly
This DIY OuttaSight system ships with a pre-charged Quick Connect line set — no HVAC license, no vacuum pump, no refrigerant gauges. The pre-charged fittings use a hand-tightened mechanical seal that a homeowner completes in 15 minutes per connection. Typical install time from unboxing to first cool air is 4–8 hours for a single-head system.
Sound Level & Comfort Features
Operating sound level ranges from 24.5 dB(A) on low to 42 dB(A) on high — the low end is whisper-quiet, below a normal conversation (60 dB) and comparable to a library reading room. Sleep mode automatically raises cooling setpoint 1–2°F over 7 hours to match the body's natural temperature drop and cut overnight energy use. Quiet mode caps fan speed and compressor rpm for an extra 2–3 dB drop in sound output.
Warranty & Certifications
When you register your unit within 60 days of purchase you get Limited Lifetime Compressor on the compressor through MrCool's registered warranty program. Unregistered coverage drops to 5-year Parts / 7-year Compressor — registration takes 3 minutes at mrcool.com and is the highest-ROI post-purchase step you can take.
What's in the Box & Compatibility
Ships as a Mini-Split with remote control included. Designed to pair with DIY 4th gen MZ. If you're buying a condenser-only SKU you'll need to match it with a compatible air handler or head unit of equal or smaller total BTU.
Product Details
The MRCOOL® DIY® Series OuttaSight® 9k BTU Ceiling Cassette is perfect for any space and provide discreet and out of sight heating and cooling. It is available in multi-zone options and is easy to install, fitting between 16” ceiling joists. The OuttaSight® cassette is designed to work with both current and future joist standards and can be recessed between all types of joists on 16 inch center, including pre-manufactured I-joists. Other ceiling cassettes have strict installation requirements in less ideal locations, but the MRCOOL® OuttaSight® doesn't require ductwork or wall space and is perfect for new constructions or retrofits. The cassette works with the MRCOOL® DIY® Quick Connect® line set which makes installation even easier since it is precharged with refrigerant, eliminating the need for vacuuming. The No-Vac® Coupler can be used to increase length. With advanced filtration, each cassette offers an Elevation function that lowers the filter panel for easy filter maintenance. Not only does this cassette feature quiet operation and multiple operating modes, but also provided is a limited lifetime warranty in addition to a 7-year compressor warranty and 5-year parts warranty, so you can feel confident in your investment.
Specifications
| Cooling Capacity | 9,000 BTU |
| Heating Capacity | 9,000 BTU |
| Voltage | 208-230 V |
| Noise Level | 40/35.5 dBA |
| SEER Rating | Up to 20.75 |
| Phase | 1 |
Features
- Fits between 16" Ceiling Joists
- Featuring our easy access, elevating filter that can be lowered to a maximum of 4.9ft from the cassette.
- Low Profile Installation
- Pair with your DIY 4th gen Multi-Zone system
- Designed to work with current and future joist standards, it can be recessed between all types of joists on 16 inch center - including pre-manufactured I-joists.
Frequently Asked Questions
Everything you need to know about this product
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