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MRCOOL Smart Thermostat

Price: $164

  • Product Description
  • Spec. & Dimensions
  • Sizing Guide
  • Warranty & Manuals

📑 Smart Thermostat Brochure

Achieve the Ideal Home Climate!

Experience the perfect home climate where comfort meets energy efficiency with the MRCOOL® Smart Thermostat. This innovative device transforms your air conditioner into a smart powerhouse, allowing you to take control of your cooling and heating from anywhere using your phone. Enjoy effortless control and enhanced comfort with a thermostat that adapts to your lifestyle.

What Makes the MRCOOL® Smart Thermostat Unique?

  • Personalized Thresholds: Customize your temperature settings to suit your comfort and efficiency needs.
  • Smart Schedules: Align your thermostat settings with your daily routine, whether you’re home, away, or asleep.
  • Smart Energy Management: Optimize energy usage and enhance cost savings by actively monitoring your heating and cooling patterns.
  • One App for All Your HVAC Systems: Manage all your HVAC units seamlessly through a single, user-friendly app.
  • Global Control for Remote Accessibility: Control your home’s temperature from anywhere in the world.
  • Location-Based Automation: Automatically adjust your home’s temperature based on your location using geofencing.
  • Vacation Mode: Save energy while you’re away by setting your thermostat to vacation mode.
  • DIY-Friendly Installation: Install your thermostat easily and quickly with our hassle-free setup process.

How Does the MRCOOL® SmartHVAC App Enhance Your Experience?

The MRCOOL® SmartHVAC app is your energy-saving partner, making smart thermostats even smarter. Here’s how it works:

  • Hassle-Free Registration: Get started quickly with guided prompts and a user-friendly interface.
  • Personalized Thresholds for Ultimate Comfort: Set custom temperature thresholds to align with your comfort and efficiency goals.
  • Smart Schedules Aligned with Your Routine: Use preset schedules or create your own for a perfectly tailored home environment.
  • Smart Energy Management: Monitor and optimize your energy usage to achieve optimal efficiency.
  • One App for All Your HVAC Systems: Control both central and room air conditioners for enhanced convenience and savings.

Why Choose Global Control and Location-Based Automation?

  • Global Control for Remote Accessibility: Your home’s temperature is always at your fingertips with the MRCOOL SmartHVAC app.
  • Location-Based Automation: Enjoy personalized comfort and energy savings as your thermostat adjusts automatically when you come and go.

How Can You Track and Optimize Energy Usage?

Transform the way you manage energy consumption with real-time tracking. Monitor and tweak your usage to ensure efficient living and smart savings. Simplify tasks with smart features and reduce energy usage automatically.

What Systems Are Compatible with the MRCOOL® Smart Thermostat?

The MRCOOL® Smart Thermostat supports a wide range of residential systems (24V AC), including:

  • Dual Fuel Systems: All types of furnaces/boilers and heat pumps, supporting up to 4 stages of heating and 2 stages of cooling.
  • Heat Pumps: Supports up to 2 stages of heating and cooling.
  • Conventional Heating and Cooling: Suitable for all types of air conditioners, boilers, and furnaces, supporting up to 2 stages of heating and cooling.

What Are the Specifications and Upcoming Features?

  • Dimensions (LxWxH): Net: 3.9"x3.9"x1", Packing: 6.5"x5.37"x2.12"
  • Weight: Net: 177.5g (6.26oz), Packing: 428.8g (15.12oz)

What's Next for MRCOOL®?

Coming soon: MRCOOL® Link, a cloud-based platform designed to maximize savings by pairing an existing air source heat pump with integrated controls, reducing reliance on fossil fuel-based heating sources. With MRCOOL® Link, users can:

  • Link multiple HVAC units, including central or mini-split heat pumps and fossil fuel heating systems.
  • Minimize the usage of fossil fuel heating.
  • Maximize the utilization of central or mini-split heat pumps.

What Warranty is Offered with the MRCOOL® Smart Thermostat?

Rest assured with the MRCOOL® Smart Thermostat, which comes with a 3-year parts warranty, guaranteeing reliable performance and peace of mind.


  • 📑 Smart Thermostat Brochure

    Achieve the Ideal Home Climate!

    Experience the perfect home climate where comfort meets energy efficiency with the MRCOOL® Smart Thermostat. This innovative device transforms your air conditioner into a smart powerhouse, allowing you to take control of your cooling and heating from anywhere using your phone. Enjoy effortless control and enhanced comfort with a thermostat that adapts to your lifestyle.

    What Makes the MRCOOL® Smart Thermostat Unique?

    • Personalized Thresholds: Customize your temperature settings to suit your comfort and efficiency needs.
    • Smart Schedules: Align your thermostat settings with your daily routine, whether you’re home, away, or asleep.
    • Smart Energy Management: Optimize energy usage and enhance cost savings by actively monitoring your heating and cooling patterns.
    • One App for All Your HVAC Systems: Manage all your HVAC units seamlessly through a single, user-friendly app.
    • Global Control for Remote Accessibility: Control your home’s temperature from anywhere in the world.
    • Location-Based Automation: Automatically adjust your home’s temperature based on your location using geofencing.
    • Vacation Mode: Save energy while you’re away by setting your thermostat to vacation mode.
    • DIY-Friendly Installation: Install your thermostat easily and quickly with our hassle-free setup process.

    How Does the MRCOOL® SmartHVAC App Enhance Your Experience?

    The MRCOOL® SmartHVAC app is your energy-saving partner, making smart thermostats even smarter. Here’s how it works:

    • Hassle-Free Registration: Get started quickly with guided prompts and a user-friendly interface.
    • Personalized Thresholds for Ultimate Comfort: Set custom temperature thresholds to align with your comfort and efficiency goals.
    • Smart Schedules Aligned with Your Routine: Use preset schedules or create your own for a perfectly tailored home environment.
    • Smart Energy Management: Monitor and optimize your energy usage to achieve optimal efficiency.
    • One App for All Your HVAC Systems: Control both central and room air conditioners for enhanced convenience and savings.

    Why Choose Global Control and Location-Based Automation?

    • Global Control for Remote Accessibility: Your home’s temperature is always at your fingertips with the MRCOOL SmartHVAC app.
    • Location-Based Automation: Enjoy personalized comfort and energy savings as your thermostat adjusts automatically when you come and go.

    How Can You Track and Optimize Energy Usage?

    Transform the way you manage energy consumption with real-time tracking. Monitor and tweak your usage to ensure efficient living and smart savings. Simplify tasks with smart features and reduce energy usage automatically.

    What Systems Are Compatible with the MRCOOL® Smart Thermostat?

    The MRCOOL® Smart Thermostat supports a wide range of residential systems (24V AC), including:

    • Dual Fuel Systems: All types of furnaces/boilers and heat pumps, supporting up to 4 stages of heating and 2 stages of cooling.
    • Heat Pumps: Supports up to 2 stages of heating and cooling.
    • Conventional Heating and Cooling: Suitable for all types of air conditioners, boilers, and furnaces, supporting up to 2 stages of heating and cooling.

    What Are the Specifications and Upcoming Features?

    • Dimensions (LxWxH): Net: 3.9"x3.9"x1", Packing: 6.5"x5.37"x2.12"
    • Weight: Net: 177.5g (6.26oz), Packing: 428.8g (15.12oz)

    What's Next for MRCOOL®?

    Coming soon: MRCOOL® Link, a cloud-based platform designed to maximize savings by pairing an existing air source heat pump with integrated controls, reducing reliance on fossil fuel-based heating sources. With MRCOOL® Link, users can:

    • Link multiple HVAC units, including central or mini-split heat pumps and fossil fuel heating systems.
    • Minimize the usage of fossil fuel heating.
    • Maximize the utilization of central or mini-split heat pumps.

    What Warranty is Offered with the MRCOOL® Smart Thermostat?

    Rest assured with the MRCOOL® Smart Thermostat, which comes with a 3-year parts warranty, guaranteeing reliable performance and peace of mind.


  • MRCOOL DIY Mini Split Sizing Guide


    Which air handler is best for your room size?

    The size of your room is the main factor in choosing the right unit. MRCOOL DIY 4th Gen comes in various sizes, each designed to cool and heat specific square footage ranges.

    Here's a quick reference for choosing the right BTU based on your room size:

    • 6,000 BTU covers up to 250 square feet
    • 9,000 BTU covers up to 350 square feet.
    • 12,000 BTU covers up to 550 square feet.
    • 18,000 BTU covers up to 800 square feet.
    • 24,000 BTU covers up to 1,050 square feet.
    • 36,000 BTU covers up to 1,500 square feet.

    How BTU Limits Work in Your Mini-Split System

    You can opt for high BTU air handlers for strong heating and cooling. But, if you plan to run multiple air handlers at the same time, consider the main unit's (condenser) maximum power.

    Here’s the deal: Suppose your condenser can handle 18,000 BTU, and you have two indoor air handlers, each at 12,000 BTU. If both run simultaneously, they’ll automatically adjust to 9,000 BTU each to match the condenser's limit. This ensures the system runs safely.

    If you usually run one air handler at a time, a lower BTU condenser might be sufficient. But if you plan to use all air handlers together, a higher BTU condenser is the way to go. This lets you enjoy the full power of each air handler without overloading the system.

    By considering these factors, you can ensure your MRCOOL DIY 4th Gen unit is perfectly sized for your needs, keeping you comfortable year-round.

    For personalized assistance or further clarification, please feel free to contact our customer support via chat or call. Our team is ready to help you make the best choice for your cooling needs.

  • DIY Multi-Zone Manuals

    MRCOOL DIY Mini Splits Warranty

    MRCOOL distributor (hereinafter “Company”) warrants this product against failure due to defects in materials or workmanship under normal use and maintenance as follows:

    • Standard Warranty: 5-year parts warranty and 7-year compressor warranty.
    • Limited Lifetime Compressor Warranty: Available if specific conditions are met.

    Conditions for Limited Lifetime Compressor Warranty:

    • Registration: The unit must be registered at the following web address: https://mrcool.com/warranty within 60 days of the installation date.
    • MrCool Care Program Enrollment: The original, registered owner must enroll in the MrCool Care program within 4 months from the installation date. This program requires a biannual fee and includes a DIY cleaning kit for regular maintenance.
    • Regular Maintenance: The unit must be cleaned biannually using the MrCool Care kit as part of the preventative maintenance to ensure proper function throughout its lifespan.

      Coverage Details:

      • Within the First 7 Years: If compressor failure occurs, verified by diagnostic testing performed by a certified HVAC technician, the warranty provides one entire unit replacement (equipment only).
      • After 7 Years: The limited lifetime compressor warranty covers the cost of a replacement compressor (equipment only).

      Important Notes:

      • The warranty does not cover any costs incurred for diagnosis or replacement of equipment.
      • If the original owner does not register the unit, the warranty defaults to the standard 5-year parts and 7-year compressor warranty.

      📑 DIY Multi-Zone Brochure

      📑 Quick Start Setup Guide

      📑 Installation Owner's Manual

      📑 Performance Specification

      📑 Troubleshooting Solution Guide

      📑 Remote Control User Manual

      📑 Ceiling Cassette Manual

      📑 Ceiling Cassette Specification

      📑 Warranty Statement

      📑 Multi-Zone AHRI Certifications: 18K BTU - 27K BTU - 36K BTU - 48K BTU

      📑 Multi-Zone Energy Guide Certifications: 18K BTU - 27K BTU - 36K BTU - 48K BTU