DIY 4th Gen Multi-Zone 18k Ceiling Cassette with 25ft DIYPro Cable
SKU DIYCASSETTE18HP-230C25
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Description
The MRCOOL® DIY® Series OuttaSight® 18k BTU Ceiling Cassette provides efficient heating and cooling while remaining out of sight and discreet, making it a perfect fit for any space.
What's in the Box
Everything you need for a complete DIY 4th Gen system
DIY 4th Gen Multi-Zone 18k Ceiling Cassette with 25ft DIY...
As described
Key Specifications
17000BTU
Cooling Capacity
208-230V
Voltage
40/28dBA
Noise Level
19000BTU
Heating Capacity
DIY 4th Gen Multi-Zone 18k Ceiling Cassette with 25ft DIYPro Cable — Model Details
What this specific model is sized for, how it installs, how it performs, and what it costs to run.
Room & Space Coverage — 17,000 BTU
The DIY 4th Gen Multi-Zone 18k Ceiling Cassette with 25ft DIYPro Cable delivers 17,000 BTU of cooling and heating capacity, sized for spaces up to 900 sq ft in standard 8-ft ceiling rooms with average insulation. At this capacity the unit is ideal for bedrooms, home offices, sunrooms, and single-room additions up to the stated square footage. Rooms with one exterior wall and average shading sit comfortably in the middle of the coverage range.
Efficiency & Operating Cost
This unit is rated at 21.8 SEER. SEER2 measures seasonal cooling efficiency — higher is better — and 21.8 puts this in the premium efficiency tier. Running the unit 8 hours a day at full load draws roughly 187 kWh/month — about $30/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.
Cold & Hot Weather Operating Range
This system produces rated heating capacity down to 3286°F ambient, best paired with a supplemental heat source in cold climates. On the cooling side the compressor runs down to 6090°F outdoor ambient, useful for server rooms, grow rooms, and any space that needs year-round cooling.
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 21 dB(A) on low to 44 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® 18k BTU Ceiling Cassette provides efficient heating and cooling while remaining out of sight and discreet, making it a perfect fit for any space. This easy to install and easy to maintain unit is offered in both single-zone and multi-zone options and can provide coverage for large and small spaces. The OuttaSight® cassette features an easy, low profile installation and can be recessed between all types of joists on 16 inch center including pre-manufactured I-joists. This makes it a perfect option for both new construction or retrofits. It doesn’t have strict installation requirements like other ceiling cassettes, so you’re able to install it in the location that suits you best, without using ductwork or wall space. The OuttaSight® works with the MRCOOL® DIY® Quick Connect® line set and the No-Vac® Coupler to increase the length of the line set. Not only does the unit offer quiet operation and multiple operating modes, but it also features the Elevation function that lowers the filter panel for easy air filter maintenance. Purchases of the MRCOOL® DIY® Series OuttaSight® 18k BTU Ceiling Cassette are protected by a limited lifetime warranty in addition to a 7-year compressor warranty and 5-year parts warranty.
Specifications
| Cooling Capacity | 17,000 BTU |
| Heating Capacity | 19,000 BTU |
| Voltage | 208-230 V |
| Noise Level | 40/28 dBA |
| SEER Rating | Up to 21.8 |
| Phase | 1 |
| Liquid Line Size | 1/4 |
| Suction Line Size | 1/2 |
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 DIY 4th gen Multi and Single Zone Systems
- 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.
- Compatible with the DIY 4th gen 18k single-zone condenser as well as our DIY 4th gen multi-zone systems
Frequently Asked Questions
Everything you need to know about this product
What size room will the DIY 4th Gen Multi-Zone 18k Ceiling Cassette with 25ft DIYPro Cable cool?
Can I install this myself without an HVAC license?
How cold can it get outside before this heat pump stops heating?
What electrical circuit do I need for installation?
How fast does HVACZAR ship this unit?
What if it arrives damaged or I change my mind?
What is the warranty on the DIY 4th Gen Multi-Zone 18k Ceiling Cassette with 25ft DIYPro Cable?
How long does shipping take?
What size room does 17,000 BTU cover?
Do you offer returns?
How can I pay?
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