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Description
MRCOOL DIY Mini Split - 18,000 BTU 2 Zone Ductless Air Conditioner and Heat Pump, DIY-B-218HP0909MRCOOL DIY Mini Split 18,000 BTU 2 Zone Wall Mounted Ductless Air Conditioner and Heat Pump (DIY B 218HP0909) The MRCOOL DIY 4th Gen 18,000 BTU 2 Zone Mini Split System is a user friendly, energy efficient heating and cooling solution designed for residential or light commercial spaces. This system features a powerful 18K BTU multi zone condenser, two 9K BTU wall mounted air handlers, and the convenience of DIY installation. With advanced features,
MRCOOL DIY Mini Split - 18,000 BTU 2-Zone Wall-Mounted Ductless Air Conditioner and Heat Pump (DIY-B-218HP0909)
The MRCOOL DIY 4th Gen 18,000 BTU 2-Zone Mini Split System is a user-friendly, energy-efficient heating and cooling solution designed for residential or light commercial spaces. This system features a powerful 18K BTU multi-zone condenser, two 9K BTU wall-mounted air handlers, and the convenience of DIY installation. With advanced features, quiet operation, and smart connectivity, this mini split system is perfect for creating personalized comfort zones in your home or office.
What’s Included
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MRCOOL DIY 18K BTU Multi-Zone Condenser:
- Delivers an impressive 21 SEER energy efficiency rating, ensuring energy savings and reduced utility bills.
- Operates reliably in extreme conditions, providing heating in temperatures as low as -13°F.
- Comes with a limited lifetime compressor warranty through the MRCOOL Care Program for ultimate peace of mind.
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Two 9K BTU Wall-Mounted Air Handlers:
- Covers up to 375 sq. ft. per air handler, ideal for bedrooms, offices, or small living spaces.
- Features a light and compact design for easy wall installation with the included mounting plate.
- Includes multiple operating modes for maximum comfort and versatility.
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Two Remote Controllers:
- Allows for independent temperature, mode, and fan speed adjustments for each air handler.
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Optional Line Sets:
- Pre-charged line sets available in standard or longer lengths to suit your installation needs (additional cost applies).
Key Features
1. Energy Efficiency
- 21 SEER Efficiency Rating: Save energy without sacrificing performance.
- Environmentally Friendly: Utilizes R-410A refrigerant, which is safe for the environment and highly efficient.
2. DIY-Friendly Installation
- Pre-Charged Line Sets: Allows homeowners to install the system without the need for professional HVAC tools or technicians.
- Comprehensive Support: Detailed manuals and video guides ensure an easy and seamless setup process.
3. Advanced Air Handler Features
- Multiple Modes: Includes Cool, Heat, Auto, Dry, Fan-Only, Quiet, and Sleep modes for personalized comfort.
- Smart Control: Compatible with the Smart HVAC app for control via Apple or Android smartphones.
- Quiet Operation: Operates with minimal noise, making it ideal for bedrooms or quiet spaces.
4. Reliable Year-Round Comfort
- Extreme Temperature Operation: Provides effective heating even in sub-zero conditions as low as -13°F, and efficient cooling in temperatures up to 122°F.
- Wide Coverage: Heat and cool two separate spaces independently with tailored comfort for each zone.
Specifications
Condenser
- Cooling Capacity: 18,000 BTU
- Heating Capacity: 19,000 BTU
- Efficiency Ratings: SEER: 21, EER: 12.5
- Operating Temperatures: Heating: -13°F to 75.2°F | Cooling: 5°F to 122°F
- Voltage Requirements: 208V-230V/60HZ/18-25A
- Dimensions: 35.04"W x 13.46"D x 26.50"H
- Warranty: 7-year condenser replacement, 5-year parts
Wall-Mounted Air Handlers
- Coverage Area: Up to 375 sq. ft. per air handler
- Cooling/Heating Capacity: 9,000 BTU each
- Modes: Auto, Cool, Heat, Fan-Only, Dry, Quiet, Sleep
- Smart Connectivity: Compatible with the Smart HVAC app
- Dimensions: 31.57"W x 7.44"D x 11.69"H
- Warranty: 5-year parts
Benefits of the MRCOOL DIY 2-Zone Mini Split System
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Customizable Comfort:
- Independently control two separate zones with personalized temperature and mode settings.
- Perfect for small to medium-sized spaces like bedrooms, home offices, or compact living areas.
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Smart Technology:
- Operate the system remotely via the Smart HVAC app on iOS or Android.
- Manage settings such as temperature, fan speed, and operating modes from anywhere.
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Energy Savings:
- Achieve significant energy efficiency with a 21 SEER rating, reducing monthly utility costs.
- Timer and Sleep modes optimize energy usage during off-peak hours.
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Quiet and Reliable:
- Designed for whisper-quiet operation, ensuring a peaceful environment in any room.
- Built to last, with robust warranties and corrosion-resistant components.
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DIY Convenience:
- Save thousands on installation costs with a simple, hassle-free DIY process.
- Pre-charged line sets make professional tools or refrigerant handling unnecessary.
Perfect Applications
- Homes: Ideal for heating and cooling two rooms independently, such as bedrooms, living rooms, or offices.
- Offices: Maintain comfortable temperatures in multi-zone professional spaces.
- Renovations: A flexible and efficient option for retrofitting older buildings or adding HVAC to new spaces.
Order Now
The MRCOOL DIY 4th Gen 18,000 BTU 2-Zone Mini Split System is the ultimate solution for energy-efficient, customizable heating and cooling. Whether you're upgrading your home or enhancing your workspace, this system provides unparalleled comfort with the ease of DIY installation.
Order today from MRCOOL DIY Direct and start enjoying reliable, year-round climate control!
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Mom of 3 recommend!
Size: 5T-6T, Unit Count: 14
I'm using these again for the 3rd time and they're great as always. My 3rd is still having some issues at night time with bed wetting, and as they get older the bigger the mess, so these truly hold up to a full bladder. And they don't smell by morning like some diaper brands. I'm usually against pull ups, but these are great for up and down ease of use and that added protection when it comes to potty training. I love the bigger size inclusion for larger children which we struggle with for comfort compared to other brands.
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Reviewed in the United States on February 14, 2026
★★★★★ 5
Approved by an Overnight Registered Nurse, Has worked great last 4 years!
Item Package Quantity: 1, Size: 100 Count (Pack of 1)
I have worked overnight as a Registered Nurse for the last 4 of 6 years and I will offer my own experience on how these pills have helped me in my job performance. To start of with I have to say that no two human beings are the same so before I bought these pills I read the good and bad reviews and wasn't sure on the product. I've had heart palpitations in the past from excess caffeine when I drank one of the blue pop top Rock Stars with 1.5 times the caffeine as regular Rock Star and I can say that no, it's not fun at all. I've also experienced when I drink to much caffeine at once and find myself either visiting the restroom many times during a shift, or the crash that comes after the initial burst of energy. Anyways, I can say that with ONE pill a shift prior to going to work, I am able to stay awake and not in a forceful manner without the many negative effects from caffeine that I've experienced in the past. Working night shifts, I've seen how many co-workers need to chain drink coffee all night. I can't say that I don't like coffee, but I don't drink it more than once a week and I prefer not too if I have the chance. This is why I am glad that the Guarana Energizer has worked for me. I am able to be more alert all shift long, not have to struggle with energy or struggle with staying awake, and when I get home I not too wired where I have a hard time going to sleep. On my days off it also works as an excellent energy booster for the mornings to get your energy level going for your day ahead. Also, I've tried other guarana pills when the Source Naturals were no longer in stock (same 900 mg strength), and I have to say that I had to take more than 2 pills per shift to keep me awake, plus they never lasted a full shift. Don't know why the "energizer" term makes a difference, but it does for me. I recommend it to all my co-workers, and when they feel low on energy I've seen that even 1/2 a tab is sufficient for a little pick me up especially for those sensitive to caffeine.
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Reviewed in the United States on December 8, 2016
★★★★★ 5
The best guarana I've used - helped me kick energy drinks!
Item Package Quantity: 1, Size: 100 Count (Pack of 1)
I suppose I ought to stand in front of a group of people, and admit to being a caffeine addict. However, I rather like caffeine. I started in on caffeine at an early age- first by drinking soda- mostly cola- as often as my parents would allow. As a teenager, I discovered coffee. Later, it was espresso drinks- I loved a good quad-shot latte, and eventually was getting several a day. A few years ago, my stomach stopped agreeing with coffee as much, so I switched to energy drinks. I was drinking about 4 Rockstars a day.
After doing the math, I realized that I was spending around $300 a month on these silly beverages. To economize, I switched to No-Doz. However, it wasn't the same, and it honestly felt... unnatural. The No-Doz sometimes aggravated my stomach, and I just didn't feel as well. Then I tried Guarana, as it is one of the main functional ingredients in many energy drinks. Love it. It seems to last a bit longer (it could be my imagination there, I am unsure), and it definitely feels more natural. I take a few of these per day- and I seem to have less of a "caffeine crash" after 4 hours or so than I once did. It still happens, but it's more gentle.
My only complaint is that the pills are rather large- definitely a chore to swallow!
Bottom line- this stuff costs just a bit more than a bottle of No-Doz, and is made from natural stuff. It feels healthier, and probably is. I now spend in a month wha I spent in a day on energy drinks. Also- for what it's worth- I've tried other brands of guarana, and this one "feels" best.
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Reviewed in the United States on March 8, 2012
★★★★★ 5
Great
Item Package Quantity: 1, Size: 100 Count (Pack of 1)
Great for those days when your feeling a little tired not super hyping just pleasant energy
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Reviewed in the United States on March 16, 2026
★★★★★ 3
Worked well for a few days, then built up a tolerance
Item Package Quantity: 1, Size: 100 Count (Pack of 1)
Guarana for me is one of those things that you should only take every once and a while. It gave me a nice surge of energy for about an hour or so after taking one, then after only a few mornings of taking one I noticed the effect completely wore off. So I stopped taking it for about a week. Then tried taking it again and it still did nothing. Maybe it's just my body, but now I need at least two to notice any effect. It's not that I even feel more alert now, it just makes me feel like I drank to much coffee. I will finish the bottle and then will not buy it again. Different supplements work differently for everyone though! Just because this didn't work for me longterm, that's not to say it won't work wonderfully for you. Trial and error is key with anything like this.
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Reviewed in the United States on October 29, 2013