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352-279-4055

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TRUECLEAN AIR is a proud dealer for MRCOOL products. Although the DIY Systems for sale are designed for DIY homeowner, installation service is available for an additional fee. MRCOOL is an American Company based in Hickory, KY. MRCOOL specializes in Do-It-Yourself mini-split systems and these systems are designed in America and MRCOOL maintains supervision and quality control throughout the entire manufacturing process. You can count on MRCOOL for reliable cooling and long lasting results.

Payment for systems on this page are processed through PayPal.

DIY Systems require a knowledge of A/C and Heating installation. It is "HIGHLY" recommended that the unit(s) be installed by a professional HVAC installer.

MRCOOL 5TH GENERATION DIY SYSTEMS

SINGLE ZONE SYSTEM
Phone not included.

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MULTIZONE SYSTEM
Phone not included. Depending on customer selected system, the number of cassette/air handlers, linseeds and remotes will vary.

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Single Zone Systems

Multi-Zone Systems

Air Handlers

Multi-Zone Condensers

Pre-Charged Line Sets

DIY MINI SPLIT INFORMATION

    Is the Smallest Mini Split Enough for Your Space? Here’s How To Know
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    Mini split systems are an efficient, flexible alternative to traditional heating and cooling. These compact systems are designed to deliver year-round comfort without the need for ductwork. Their size makes them ideal for tight or unique spaces where larger HVAC options simply won’t fit.
    But what if you're working with a really small room, like a home office, RV, garage, or tiny home? A mini-split can still accommodate! Small and powerful, these systems offer targeted comfort with a space-saving design that doesn’t compromise on performance.
    At MRCOOL®, we offer a variety of compact mini split options engineered to fit your lifestyle and your layout. In this post, we’ll break down what qualifies as the smallest mini split, how it stacks up against traditional systems, what features matter most, and how to choose the best one for your space.
    What Is a Small Mini Split?
    When we talk about small mini splits, we’re referring to units with the lowest BTU capacity and the most compact physical design. The smallest systems on the market typically start between 6,000 and 9,000 BTUs, which is enough to comfortably heat or cool a single room up to about 400 square feet, depending on insulation and layout. Our configurator will help you choose the right size for your space! 
    These units are perfect for spaces that can’t accommodate a bulky central system or where installing ductwork isn’t practical. Their sleek indoor wall units are typically less than 3 feet wide and designed for low-profile installation that won’t interfere with furniture placement or design flow.
    In HVAC, too much or too little power can lead to inefficiency, increased wear on the system, or uneven comfort. A small mini split system ensures just the right amount of power for smaller or oddly shaped rooms while maintaining energy efficiency.
    Smallest Mini Split AC Unit vs Traditional AC Systems
    So, how does the smallest mini split AC unit compare to traditional air conditioners? Quite favorably.
    Unlike bulky window units, mini splits preserve your view and your wall, with no large cutouts required. They operate more quietly, use energy more efficiently, and offer a cleaner, more streamlined look. And because they don’t rely on ductwork like central systems, installation is simpler, less invasive, and often more cost-effective.
    Even the mini split's smallest models offer both heating and cooling, giving you a year-round solution in a single system. That’s a major upgrade over most small window units, which typically only offer cooling.
    How Does a Heat Pump Work? A Guide for Homeowners
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    When it comes to heating and cooling your home, heat pumps offer a smart, energy-efficient solution that works all year long. Instead of creating heat, like a traditional furnace, a heat pump simply moves heat from one place to another. In winter, it brings warmth into your home. In summer, it pushes heat out. It’s a single system that can keep you comfortable in every season. 
    At MRCOOL®, we believe in giving homeowners access to high-performance technology that’s both user-friendly and forward-thinking. This article will walk you through how a heat pump works, the key components that make it work, the different types available, and the pros and cons of investing in one. Whether you're new to HVAC systems or exploring efficient alternatives, we’re here to help you make an informed choice. 
    Let’s get started. 

    What Does a Heat Pump Do? 
    As stated above, a heat pump doesn’t generate heat, it moves it. This makes all the difference when it comes to efficiency, versatility, and long-term cost savings. 
    In colder months, a heat pump works by extracting heat from the air outside and transferring it indoors to warm your living space, even when the temperature drops below freezing. Thanks to advanced refrigerant technology and efficient compressors, modern systems, like those from MRCOOL®,  are built to maximize performance in these low-temperature conditions, making them an excellent alternative to traditional heating methods. Depending on which system you choose, you can have efficient heating down in sub-zero temperatures all winter long. 
    When summer arrives, the system will shift into cooling mode, allowing it to work similarly to a standard air conditioner. Instead of bringing heat in, the heat pump works in reverse, removing heat and humidity from inside your home and pushing it outside. This leaves you with a cool, comfortable interior. 
    This ability to reverse its operation is what makes a heat pump so versatile. With just one system, you get heating and cooling in a compact, energy-conscious package. Because it transfers heat instead of generating it by burning fuel, a heat pump uses significantly less electricity or energy than furnaces or conventional AC units. That not only helps reduce your monthly utility bills but also supports a more sustainable lifestyle. 
    Curious how this technology stands up when the weather gets harsh? Learn more about how heat pumps work in freezing temperatures. 

    Key Components of Heat Pumps 
    All heat pumps rely on a few essential parts working in sync to transfer heat. Here’s a quick look at the main components: 
    • Compressor – This is the heart of the system. It pressurizes the refrigerant and moves it through the unit. 
    • Condenser Coil – Located outside, it releases heat during the cooling cycle. 
    • Evaporator Coil – Positioned inside your home, it absorbs heat in cooling mode and releases heat in heating mode. 
    • Refrigerant – A fluid that carries heat through the coils, changing states between gas and liquid. 
    • Expansion Valve – Controls the flow of refrigerant into the evaporator coil, helping to regulate temperature and pressure. 
    • Reversing Valve – Flips the system from heating to cooling mode (and back) by changing the direction of refrigerant flow. 
    • Fans – Help move air over the coils to distribute heated or cooled air throughout your home. 
    • Thermostat – Acts as the system's brain, letting you set your desired temperature and manage your comfort easily.
    Each part plays a critical role in making sure your system runs efficiently and reliably.

    Types of Heat Pumps
    Not all homes have the same needs. That’s why MRCOOL® offers a variety of heat pump systems. Let’s take a closer look at the most common types:

    Air-Source Heat Pumps
    These systems draw heat from the outside air. They’re the most widely used heat pump type and work well in moderate climates. Many MRCOOL® models, such as the Universal® and Central Ducted Hyper Heat, are designed to perform efficiently even in colder temperatures.

    Ductless Mini-Split Systems
    Ideal for homes without ductwork or for zoning specific rooms. These systems include an outdoor unit and one or more indoor air handlers. They’re flexible, energy efficient, and perfect for additions or renovations.

    Pros and Cons of Heat Pumps 
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    Like any major home system, heat pumps come with both advantages and a few trade-offs. Understanding both can help you decide whether a heat pump is the right fit for your home. 

    Heat Pump Pros 
    Heat pumps are packed with benefits for today’s energy-conscious homeowners. Here are some of the top reasons people choose them: 
    • Energy Efficient – Because heat pumps move heat instead of creating it, they use less electricity than traditional systems. 
    • Cost Savings – Over time, reduced energy use can lead to lower utility bills, especially in homes where both heating and cooling are needed regularly. 
    • Year-Round Comfort – One system provides both heating and cooling, simplifying your setup and maintenance. 
    • Environmentally Friendly – Lower energy use and optional eco-friendly refrigerants help reduce your carbon footprint. 
    • Smart Controls – Many MRCOOL® systems feature app-based control and programmable thermostats for more efficient energy management. 
    Heat Pump Cons
    While heat pumps have plenty of advantages, it’s also important to understand the potential downsides:
    • Higher Upfront Cost – Installation and equipment can be more expensive than traditional systems, though long-term savings often offset this.
    • Installation Requirements – Some systems require professional setup or adequate space for both indoor and outdoor units.
    • Performance in Extreme Cold – Though technology has improved, some traditional air-source models may need a backup heat source in frigid climates.
    • System Noise – While most modern units are quiet, the outdoor condenser may produce more sound than expected, especially under heavy load.
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