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    5 customer reviews)

$799.99$999.99-20%

This is not the full ductless system and requires a matching condenser

Introducing the MRCOOL E Star DIY 3rd Gen 18k BTU 20 SEER Ductless Mini-Split Heat Pump. The MRCOOL DIY E Star Series are ductless mini-split heat pumps that have been enhanced with WIFI, making setup quick and easy. They're also flexible enough to be installed virtually anywhere without requiring specialized tools or expensive equipment.

The 18,000 BTU unit is 20 SEER and designed to heat and cool up to 750 square feet efficiently and effectively. You can control your DIY unit from anywhere with our SmartHVAC app, which is compatible with Amazon Alexa and Google Assistant smart devices. With MRCOOL's new DIY E Star Series, taking on projects by yourself has never been easier

This unit is shipped in two boxes.

  • McCool's easy installation: The pre-charged quick connect line does not require special tools, equipment, or training
  • SmartHVAC app: With WIFI control, you can manage your DIY projects from any location using your Apple or Android smart device and an Internet connection.
  • The variable-speed DC inverter compressor uses less energy, saving you money.
  • Low ambient cooling: Best for server rooms, greenhouses, and other applications that need cooling year-round, this system can cool exterior temperatures down to 5F.
  • This 20 SEER unit can efficiently heat and cool a space up to 750 square feet.
  • 7-Year compressor warranty and 5-year parts warranty
  • Auto-restart: With the MRCOOL DIY E star Series, there's no need to worry about power outages. The unit will automatically restart once power is restored.
  • Gold fin condenser: Salt air and ocean breezes can be tough on metal, but MrCools condenser is designed to withstand long-term corrosion. So if you're coastal living, don't worry - your investment is safe with us.
  • Louver position memory: The horizontal louver on this product will automatically move to the position you set it last time the unit was turned on so that you don't need to waste time adjusting it every time.
  • With our automatic leakage detection technology, you will be immediately notified of any potential problems.
  • Overview
  • Specifications
  • Our Promise to You
  • Warranty 
  • Delivery & Returns

Why We Love MrCool Products

MrCool is an industry leader in home HVAC systems, because of its commitment to providing innovative technology that is built on customer satisfaction. The company has decades of experience and offers a full range of products and services to meet the needs of both residential and commercial customers.

They are at the forefront of HVAC innovations, with a team of engineers constantly working to create the most energy-efficient and technologically advanced systems on the market. Their heating and cooling solutions are on the cutting edge of modern technology, and they are constantly upgrading their product lines to meet the changing needs of customers.

They also innovated the DIY heating and cooling systems, a product that allows homeowners to install or maintain their HVAC systems. This makes MrCool an ideal company for customers who want to save money while ensuring they are getting the best products and services available.

Smartdesk Pro understands the importance of providing our customers with their goods on time. We make every effort to ensure that our items are delivered as soon as possible and in excellent condition. Our team of highly trained professionals is always available to answer any questions or concerns you may have about your purchase.


We take the utmost care in packing each order with a lot of love and attention to detail so that you, our clients, may enjoy them. Thank you for being a loyal customer. We will do all we can to offer high-quality goods and services to you.


Thank you for putting your trust in us, it means a lot. We'll continue working hard to earn and maintain that trust. Thank you for being part of the Smartdesk Pro family!

Warranty Details

(Please note the general warranty does not apply to commercial units.) 


For details on commercial warranty, please contact us at service@sunpentown.com)


Sunpentown International Inc. warrants our products to be defect free in material and workmanship for a period of ONE YEAR from the date of purchase. Defective products may be sent back by the original purchaser or any subsequent owner within the warranty period, with proof of purchase date to Sunpentown Int’l.


Defective products will be repaired or replaced, at manufacturer’s discretion, free of charge. All replacement parts or units will be new or reconditioned. Parts or units, which are replaced, become the property of Sunpentown. Warranty after repair or replacement will not be extended beyond the original one-year period.


The warranty does not apply to any unit that has been tampered with, nor to damages incurred through improper use and care, faulty packing or mishandling by any common carrier.


The warranty does not apply to any unit that has been used outside of the US.

What is NOT Covered

  • Warranty does not include freight charges. 
  • Units used outside of the US 
  • Damage due to installation error, product abuse and/or misuse. 
  • Incidental or consequential damage caused by possible defects with this product. 
  • Labor cost incurred for the installation and/or removal of a possible defective unit. 
  • Damage to product caused by improper power supply voltage, accident, fire, floods or acts of nature. 
  • Failure of product resulting from unauthorized modifications to the product. 
  • Improper installation or failure to perform the necessary maintenance. 
  • Normal wear and tear on parts or replacement of parts designed to be replaced. 
  • Damage to personal property from use of product. · 
  • Replacement or repair of household fuses, circuit breakers, wiring or plumbing.

Repairs not covered by this warranty may be returned to Sunpentown, postage prepaid. All repairs or services will be performed at current cost for parts and labor plus return postage. Please carefully box your package for shipping and it is HIGHLY recommended to return product by insured or by traceable means. Sunpentown is NOT RESPONSIBLE for any packages lost or damaged by any of the carriers.


Manufacturer’s sole obligation and your exclusive remedy under this warranty are limited to such repair or replacement. This is a limited warranty and is in lieu of all other warranties, express or implied, including merchantability. This warranty gives you specific legal rights. 


You may also have other legal rights varying from state to state. If you have service or repair questions:

Do not return the product to the retailer from which it was purchased. 


Contact our customer service team (1-800-330-0388) for assistance.  To ensure the fastest possible resolution to the problem, please have the model number and purchase information on hand. 


If it is determined that you should return your product for repair or replacement – send the product along with your name, contact info and brief description of the problem to:


SUNPENTOWN INTERNATIONAL INC. Attn: Service Dept. 14625 Clark Ave. City of Industry, CA 91745


If the inspection shows that the product is defective, under our Limited Warranty, Sunpentown will attempt to repair or will replace the defective part or product at no cost to you.


Comparable substitutions are based on replacement product availability and at the sole discretion of the Manufacturer. If our inspection shows that the product is not defective under our Limited Warranty we will return it to you shipping charges prepaid.


Please note that the inspection process can take 7~10 business days from receipt of your product. Replacements and/or repairs normally take 2~5 working days, but can tack up to 6 weeks depending on product/part availability.

All orders ship free. We ship hundreds of orders daily to our happy customers. We keep them happy by being very responsive and transparent about shipping times. We take great care in ensuring that our products are handled and packaged carefully.


Below you will find a breakdown of how we handle and prioritize shipment:


Order Processing: Our quality assurance and order verification process is critical to ensuring that you receive your products on time and in great condition. We perform sound tests, quality checks, and packaging inspections on every order before it is sent to our warehouse.

This careful process usually takes 1-2 days, but in some cases, it may take up to 3 days.

We serve primarily in the lower 48 of the United States of America. If you are ordering from Hawaii and/or Alaska and other regions, please reach out to us directly and we will give you a quote.

If you want to ship us internationally, please let us know.

Shipping Costs and insurance: Shipping costs. Shipping is currently free for all orders. However, some orders to Hawaii and Alaska may incur a small fee. There may also be customs charges based on the countries we are shipping to.


We take great care of products in our shipping process, so if anything arrives damaged, just let us know and we'll send you a new one. It's quite rare that any items get broken when they're shipped but it does happen, which is why we take great care in using packaging that ensure safety of your items.


We offer 30 days returns. We will always try our best to accommodate your return requests.


Feel free to email us anytime at info@smartdeskpro.com to review the status of your order or use the Contact us page.


MrCool Means Quality

An Industry Leader

MrCool is an industry leader in home HVAC systems, thanks to its dedication to providing innovative and cutting-edge technology that always puts customer satisfaction first. With decades of experience and a full range of products and services , MrCool is at the forefront of HVAC innovation.

Quality Performance and Features

MrCool versatile product line is made of high-quality materials and features advanced technology that sets them apart from other HVAC systems on the market. Whether you need to cool your home in the summer or keep it warm in the winter, MrCool has a product that is right for you. 

Built to Last

MrCool is known for making durable, high-quality HVAC systems that are designed to meet the needs of residential and commercial customers. Their products are built on cutting-edge technology that is constantly evolving to provide the most efficient and innovative solutions on the market.

See what our customers are saying

Frequently Asked Questions

How long does it take for my order to be processed?

We process your orders within 1-3 Business Days. Excludes Holidays and weekends. 

How long does it take to deliver an order?

Normal delivery takes 3 to 5 days, depending on the location. We do provide express processing with next-day delivery for an additional fee.

Can I inspect the goods upon receiving them?

Yes, you can open the parcel to view the product when you receive the order.

What should I do if there is a problem with my product?

Please notify our customer service about your problem and send the product back for repair or replacement.

What payment methods do you provide?

We accept PayPal along with American Express, Visa and Master Card credit cards.

Have a question? 

Call us:

(888) 242 - 4257

8 AM to 7 PM EST

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  • (888) 242-4257
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