Product Overview
MRCOOL DIY Mini Split System - Easy Installation & Smart Control
Easy DIY Installation
The only do-it-yourself (DIY) mini split air conditioner available that's easy to install. The MRCOOL DIY Mini Split System is designed for a simple and quick installation for the DIYer in you. Once the system is delivered, installation should only take a few hours with no special tools required. This system features a cooling capacity of 36,000 BTUs and a 36,000 BTU heat pump. Note: We do not recommend this unit as a primary heat source in northern climates. It can cool approximately 1,500 sq. ft., suitable for rooms measuring about 35' x 43' or larger. With an 18 SEER and 12.0 HSPF rating, the MRCOOL 4th Generation Enhanced DIY mini splits include the new SmartController WiFi module for easier setup, improved functionality, and compatibility with Amazon Alexa and Google Assistant. Control your system from anywhere using your Android or Apple smartphone or tablet.
SmartController Features
With MRCOOL's SmartController, you can control your system using Amazon Alexa, Google Assistant, or directly through your smartphone or tablet. Additional features include:
- 7-day programmability
- Filter maintenance reminders
- Usage tracking to help control costs and save energy
Pro Cable and Line Set Installation Kits
Included with your MRCOOL Single Zone 4th Gen DIY Mini Split System is a 25-foot DIY Pro Cable, featuring crimped connectors and protective conduit covering for long-lasting use. This cable connects the outdoor condenser unit to the indoor unit. If you need more than the included 25 ft. line set, MRCOOL offers additional line sets and couplers to extend up to 75 ft., the maximum allowable length for DIY systems. Line sets come fully charged with R410A refrigerant, and each "Line Set Install Kit" over 25 ft. includes the necessary couplers.
| Line Set Install Kit | No-Vac Line Set(s) Included | DIY Coupler and Wire Kit Included | Details |
|---|---|---|---|
| 25 Ft. | DIY25-3858 | N/A | Includes 25 ft. length of Pro-Cable. |
| 50 Ft. | DIY25-3858 DIY25-3858 |
DIYCOUPLER-3858K75C | Includes 75 ft. Pro-Cable and required couplers. Excess cable must be coiled as it cannot be cut. |
| 75 Ft. | DIY25-3858 DIY50-3858C |
DIYCOUPLER-3858K75C | Includes 75 ft. Pro-Cable and required couplers. Excess cable must be coiled as it cannot be cut. |
Durable Outdoor Condenser
The outdoor condenser features a Gold Fin finish to resist corrosion. The system includes a variable 4-speed compressor with inverter technology, operating in cooling mode down to 5°F—ideal for server rooms and greenhouses needing year-round cooling. It also operates in heating mode down to 5°F.
Reliable Operation
The system features auto-restart in the event of a power failure, automatically resuming operation once power is restored. The WiFi App allows complete control from anywhere with a connection, compatible with Android and Apple smartphones or tablets.
SmartController Capabilities
- Global Control: Control your MRCOOL system via smartphone from anywhere in the world.
- Weekly Scheduling: 7-day scheduling functionality to set your preferred settings and times.
- Filter Maintenance Reminder: Stay on top of maintenance with automatic reminders.
- Geo Fencing: Automatically turn your system on before you arrive and off after you leave.
- Usage Statistics: Track usage to control costs and save energy and money.
- Timeline of Actions: See who is using the AC and their settings.
Additional Features
- Low Ambient Cooling to 5°F: Perfect for server rooms, greenhouses, or other year-round cooling applications.
- Sleep Mode: Automatically adjusts temperature to maximize comfort during sleep. In COOL mode, increases temperature by 2°F after 1 hour and another 2°F after another hour. In HEAT mode, decreases temperature by 2°F after 1 hour and another 2°F after another hour. After 7 hours in Sleep mode, the system switches off automatically.
- Auto Cool: Automatically manages cooling settings.
- Auto Restart: Resumes operation after power outages.
- Louver Memory: Horizontal louver returns to the last set position.
- Auto Mode Feature: Automatically selects cooling or heating based on ambient temperature versus set temperature.
- Leakage Detection: Alerts you if low coolant is detected to prevent system damage.
- Gold Fin Condenser: Provides long-term corrosion resistance.
- LED Controls: Easy-to-use LED interface.
- Variable 4 Speed Control: Adjust airflow speed.
- Fan Only Option: Operate the fan without cooling or heating.
- Follow Me Feature: Adjusts temperature based on the remote's location to maintain comfort where you are.
- Dehumidifying Operation: Reduces room humidity for increased comfort by cycling between cooling and fan-only modes.
- Temperature Range: Set temperatures from 62°F to 86°F in 1°F increments.
Operating Costs
Cooling operating costs average around $284/year, and heating operating costs average about $855/year, as provided by AHRI.
Helpful Videos
For videos on remote usage and SmartController installation and app usage:
Tech Specs
General Features
Performance Data
Features
Piping / Line Set Requirements
Operating Range
Weights and Dimensions
Indoor Unit
Outdoor Unit
Electrical Requirements
WARNING!
Product Warranty
The unit comes standard with a 5 Year Parts/7 Year Compressor Warranty and is available with a Limited Lifetime Compressor Warranty with certain conditions/requirements.
The Limited Lifetime Compressor Warranty & the 7 Year Unit Replacement Warranty covers the unit ONLY in the event of compressor failure. In order to qualify for the Limited Lifetime Compressor Warranty, the unit must be registered at the web address (https://mrcool.com/warranty/) within 60 days of the installation date AND the original, registered owner must also enroll in the MrCool Care Program within 4 months from the installation date, which has an biannual fee to be covered by the owner. The MrCool Care Program is designed to provide the owner with a Do-It-Yourself cleaning kit to service/clean the unit at regular intervals (biannually) as preventative maintenance to help ensure the unit will continue to function properly throughout its lifespan.
