DIY 18,000 BTU 1 1/2 Ton Ductless Mini-Split Wall Mounted Air Handler - 230V/60Hz
Component — Not a Complete System
This is the indoor unit only. To run, you also need a matching outdoor condenser and a refrigerant line set. Looking for the complete system instead? Browse complete 18,000 BTU systems.
SKU DIY-18-HP-WMAH-230B
Customize it — compatible add-ons only
Clean channel for the lines running down your exterior wall.
Tool kit, hole saw, and wrench — everything the self-install calls for.
Maintenance kit and coil cleaner keep efficiency (and the warranty) healthy.
MrCool DIY factory warranty — register after install to activate the full coverage tiers.
Sizing Help
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Resources
Brochures & Manuals
Description
DIY 18,000 BTU 1 1/2 Ton Ductless Mini-Split Wall Mounted Air Handler - 230V/60Hz
What's in the Box
Here's what you'll receive with your order
Wall-Mount Air Handler
Indoor ductless mini-split unit
Wireless Remote Control
Handheld remote with temperature control
Mounting Plate & Hardware
Wall mounting bracket and screws
Owner Manual
Installation and operation guide
Key Specifications
18000BTU
Cooling Capacity
208-230V
Voltage
33.5/42/47dBA
Noise Level
18000BTU
Heating Capacity
DIY 18,000 BTU 1 1/2 Ton Ductless Mini-Split Wall Mounted Air Handler - 230V/60Hz — Model Details
What this specific model is sized for, how it installs, how it performs, and what it costs to run.
Room & Space Coverage — 18,000 BTU
The DIY 18,000 BTU 1 1/2 Ton Ductless Mini-Split Wall Mounted Air Handler - 230V/60Hz delivers 18,000 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 handles medium primary rooms, master suites with attached bath, converted garages, and workshops. If your space includes a sunny west-facing wall or a finished bonus room above it, lean toward the upper end of the coverage range.
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 3rd Gen Multi-Zone 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. The system supports line set lengths up to 75ft; longer runs are available as accessory kits. Plan the shortest practical route — every 10ft of line set adds roughly 2% capacity loss. Ships with R-410A refrigerant. R-410A is a mature, widely-serviced refrigerant; service technicians and parts are available at any HVAC supply house.
Sound Level & Comfort Features
Operating sound level ranges from 33.5 dB(A) on low to 47 dB(A) on high — the low end is whisper-quiet, below a normal conversation (60 dB) and comparable to a library reading room. The indoor blower offers 4 fan speeds plus auto mode, letting you trade airflow for quiet operation in bedrooms while running louder in living areas. Quiet mode caps fan speed and compressor rpm for an extra 2–3 dB drop in sound output.
What's in the Box & Compatibility
Ships as a Mini Split with remote control included.
Product Details
Choose the DIY 18k BTU 1 ½ Ton Ductless Mini-Split Wall Mounted Air Handler for the most rewarding home improvement project that you can do essentially all by yourself. This unit can cover around 750 square feet, making it perfect for cooling a room in your home to your exact specifications or for additional heating and cooling power in a multi-zone setup. It’s easy to install, too! Choose the best location to mount it, then connect it to the condenser using the DIY’s pre-charged line sets. You’ll save money before the system is even up and running! After you get this unit installed, there’s a lot of rest and relaxation headed your way thanks to modes like AUTO, DRYING, SLEEP, and many others. This air handler comes with a Smart HVAC Controller, which allows you to link the air handler to your phone so you can enjoy better control and a wider variety of features. You can rest easy knowing that this unit is covered by a 5 year parts warranty when you register your product online. This DIY 18k BTU 1 ½ Ton Ductless Mini-Split Wall-Mounted Air Handler will treat you to flawless indoor comfort for years to come.
Specifications
| Cooling Capacity | 18,000 BTU |
| Heating Capacity | 18,000 BTU |
| Voltage | 208-230 V |
| Refrigerant | R-410A |
| Noise Level | 33.5/42/47 dBA |
| Max Line Set | 75 ft |
| Phase | 1 |
| Refrigerant Type | R-410A |
| Liquid Line Size | 1/4 |
| Suction Line Size | 1/2 |
| Country of Origin | China |
Features
- Easy DIY Installation
- Gold Fin® condenser: corrosion resistant - live on the coast? Don't worry, our condenser is built to resist long term corrosion
- Energy Efficient DC Inverter
- R-410A environmentally friendly refrigerant
- Systems include our SmartHVAC WiFi Control Module with improved setup and enhanced functionality for Apple and Android smart devices. Works with Amazon Alexa. Works with Google Assistant.
Frequently Asked Questions
Everything you need to know about this product
What size room will the DIY 18,000 BTU 1 1/2 Ton Ductless Mini-Split Wall Mounted Air Handler - 230V/60Hz cool?
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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 18,000 BTU 1 1/2 Ton Ductless Mini-Split Wall Mounted Air Handler - 230V/60Hz?
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