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    • MRCOOL Smart Thermostat 24 Volt (MST04)
    • MRCOOL Smart Thermostat 24 Volt (MST04)
    • MRCOOL Smart Thermostat 24 Volt (MST04)
    • MRCOOL Smart Thermostat 24 Volt (MST04)
    • MRCOOL Smart Thermostat 24 Volt (MST04)
    • MRCOOL Smart Thermostat 24 Volt (MST04)
    • MRCOOL Smart Thermostat 24 Volt (MST04)
    • MRCOOL Smart Thermostat 24 Volt (MST04)

    MRCOOL Smart Thermostat 24 Volt (MST04)

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    Sale Price $101.00 Regular Price $126.25

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    MRCOOL Smart Thermostat (MST04) – Smart Control, Maximum Comfort, Effortless Efficiency

    Upgrade your home’s climate control with the MRCOOL Smart Thermostat (MST04) — a sleek, powerful, and intuitive thermostat designed for modern living. Whether you're at home, at work, or halfway around the world, this Wi-Fi connected thermostat puts complete HVAC control in the palm of your hand.

    Featuring intelligent scheduling, voice assistant compatibility, and DIY installation, the MST04 is ideal for homeowners looking to boost energy efficiency, reduce utility costs, and enjoy hassle-free comfort year-round.


    Key Features & Benefits

    • ✔ Personalized Presets: Automatically adjusts temperature with modes like Home, Away, and Sleep for efficient, lifestyle-based climate control.
    • ✔ Smart Energy Management: Save money with features like Vacation Mode and real-time optimization to avoid unnecessary heating or cooling.
    • ✔ Global Remote Control: Use the MRCOOL SmartHVAC App to control settings, monitor system health, and track usage from anywhere.
    • ✔ Voice Assistant Ready: Compatible with Amazon Alexa, Google Assistant, Siri, and MRCOOL® Link for hands-free control.
    • ✔ Location-Based Automation: Built-in geofencing adjusts temperatures based on your location to minimize energy waste.
    • ✔ DIY Installation: Designed for easy setup with no professional tools or technician needed. Get up and running in minutes!
    • ✔ Offline Control: Maintains manual functionality even without Wi-Fi, ensuring uninterrupted performance.
    • ✔ Quick Setup & 3-Year Warranty: Comes with all components for fast installation and is backed by a reliable 3-year parts warranty.

    📦 What’s in the Box?

    • MRCOOL Smart Thermostat (MST04)
    • Wall Mounting Plate
    • Mounting Screws
    • Quick Start Installation Guide

    🔹 Why Buy from MRCOOL DIY Direct?

    At MRCOOL DIY Direct, we do more than just sell HVAC products—we empower homeowners across America to take climate control into their own hands. With us, you get:

    • Factory-Authorized MRCOOL Products – Always genuine, always compatible
    • Expert Guidance & Support – From setup to troubleshooting, we’re here to help
    • Fast & Secure Shipping – Shipped from our U.S. warehouse, not a dropshipper
    • Thousands of Happy Customers – Trusted across the nation

    🛒 Ready to Take Control?

    Don’t settle for outdated thermostats or overpriced installation costs. Upgrade to the MRCOOL Smart Thermostat MST04 and enjoy the perfect blend of comfort, efficiency, and control — all from the USA’s most trusted HVAC dealer.

    Specifications & Dimensions

    📊 Technical Specifications

    Specification Details
    Model MST04
    Dimensions (Thermostat) 3.9" D x 1" H x 3.9" W
    Gross Dimensions 6.5" D x 2.12" H x 5.37" W
    Weight 0.95 lbs
    Voltage 24V
    Operating Modes Sleep, Vacation, Location-Based Automation
    Smart Home Compatibility Alexa, Google Assistant, Siri, MRCOOL® Link
    App Control MRCOOL SmartHVAC App (iOS & Android)
    Warranty 3-Year Limited Parts Warranty
    Product Specifications
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    Service & Support

    Manufacturer Warranty

    This product is covered by the manufacturer’s warranty against defects in materials and workmanship when installed and used according to the manufacturer’s guidelines. Warranty terms and coverage periods vary by manufacturer and product type. Please refer to the official product documentation or contact our team if you need help verifying warranty details.

    Technical Support

    Freedom HVAC Supply is staffed by people who actually understand HVAC systems. If you need help confirming compatibility, selecting the correct replacement part, or understanding installation requirements, our team is available to assist before and after your purchase.

    Product Documentation

    Installation manuals, specification sheets, wiring diagrams, and other technical documentation are available whenever possible. These resources help ensure proper installation, system compatibility, and safe operation of your equipment.

    Parts Compatibility & Cross-Reference

    Many HVAC parts replace or supersede older manufacturer part numbers. We provide replacement part numbers and compatible model information on product pages to help technicians and homeowners verify the correct component before ordering.

    Replacement Parts & Accessories

    Freedom HVAC Supply carries genuine replacement components and compatible accessories to keep HVAC systems running reliably. From control boards and motors to sensors, line sets, and installation accessories, we supply the parts professionals depend on.

    Customer Support

    If you have questions about product compatibility, warranty coverage, or installation considerations, our support team is ready to help. Our goal is to make sure you get the right part the first time so your system can get back up and running quickly.

    FAQs About Our HVAC Products

    Quick answers to questions about ordering, compatibility, and installation.

    Ordering & Compatibility

    1. Do you sell HVAC equipment to homeowners and DIY installers?

    Yes. Freedom HVAC Supply sells HVAC equipment and parts to contractors, property owners, and qualified DIY installers. Some products may require professional installation based on local codes.

    2. How do I know if this HVAC product is compatible with my system?

    Product pages include specifications and compatibility details. If you’re unsure, our team can help verify fit before you order.

    3. Can HVAC contractors purchase from Freedom HVAC Supply?

    Absolutely. We work with licensed HVAC contractors, installers, and professionals nationwide.

    Installation & Support

    1. Do HVAC systems require professional installation?

    Some HVAC equipment must be installed by a licensed professional to meet code requirements or warranty terms. Always review manufacturer guidelines.

    2. Can you help me choose the right HVAC system or part?

    Yes. Our support team can assist with product selection based on your application, space, and installation needs.

    3. Do you provide installation manuals or documentation?

    Manufacturer installation guides and documentation are included or available upon request for most products.

    Warranty & Shipping

    1. Do HVAC products include a manufacturer warranty?

    Most HVAC equipment includes a manufacturer warranty when installed according to guidelines. Warranty terms vary by brand and product.

    2. Do you ship HVAC equipment nationwide?

    Yes. We ship HVAC systems and parts throughout the continental United States using trusted freight and parcel carriers.

    3. What should I know about freight delivery for HVAC equipment?

    Larger HVAC equipment ships via freight and should be inspected upon delivery. Delivery details are provided during checkout.

    Need HVAC Help?

    Get help with ordering, compatibility, or installation questions.

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