MRCOOL 9000 BTU 115V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, 4th Gen Advantage Series - Wall-Mounted AC Unit w/Heating and Cooling for Home, Office & Commercial Space
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Availability:
Only 4 left in stock, order soon!
Arrives
Sep 13 – Sep 14
Style: 9000 BTU - 115V
Features
- Powerful Heating & Cooling Performance: Equipped with 9,000 BTU capacity for reliable temperature control and efficiently heats or cools home, office, and commercial areas up to 350 sq. ft.
- Professional Installation: With this ductless mini-split inverter system, installation should be performed by an HVAC technician.
- Energy-Efficient & Cost-Saving: Designed for power efficiency and quiet operation, allowing you to relax and indulge in comfort without high electricity costs.
- All-Season Reliability: Powered with both heating and cooling capabilities, making it a highly versatile HVAC unit for all times of the year. Features a sleek and modern finish that easily blends into any interior space.
- Trusted Quality: MRCOOL offers innovative and energy-saving heating and cooling solutions using advanced technology and performance for convenient, year-round comfort.
Brand: MRCOOL COMFORT MADE SIMPLE
Cooling Power: 9000 British Thermal Units
Special Feature: Heating And Cooling Function
BEE Star Rating: 4 Star
Seasonal Energy Efficiency Ratio (SEER): 19
Color: Gold
Voltage: 115 Volts
Noise Level: 56 dB
Refrigerant: R-454B
Power Source: Corded Electric
Manufacturer: MRCOOL COMFORT MADE SIMPLE
Part Number: A-09-HP-115C-MPN
Item model number: A-09-HP-115B
Color: Gold
Style: 9000 BTU - 115V
Power Source: Corded Electric
Voltage: 115 Volts
Wattage: 1596.5 watts
Installation Method: Split System
Sound Level: 56 dB
Special Features: Heating And Cooling Function
Included Components: 16 ft line set, control wire, 6 ft drain tube, Air handler, Condenser, Remote, WiFi Smart Kit
Floor Area: 375 Square Feet
Date First Available: May 22, 2020
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sep 13 – Sep 14
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 12000 BTU - 230V
I bought this because of a suggestion from a builder I work with frequently. He knew I like to do things myself. After investigating I decided on the 12k 240 volt system. I installed indoor and outdoor unit. I attempted to make the connections but stopped when I started to remove the caps on the inside unit, it started hissing, which I wasn’t expecting. I have a HVAC guy I know personally and requested one of his guys visit to complete the installation. The technician mentioned the hissing was just nitrogen in the unit. He completed the typical servicing they would do on mini splits, pressure test and pulling vacuum. I’ve run the system for a month and have no complaints. It works great and it’s super quiet. The WiFi module paperwork wasn’t updated for this new model but I figured it out.
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Reviewed in the United States on July 17, 2025 by Greg
Style: 9000 BTU - 115V
Works way better than any ac unit I ever gotten. Easy to install. Quiet as heck! My electric bill didnt spike up the fan speed was fast yet quiet. The size is perfect and energy efficient! Very good quality.
Reviewed in the United States on June 20, 2025 by T x N Y
Style: 12000 BTU - 230V
I deeply regret purchasing the Mr. Cool 12,000 BTU mini split unit. My husband installed this in our rabbit barn—a space well within the unit’s advertised capacity—and from the start, it was nothing but trouble. Over the short month and a half we had it, the unit was unreliable, inconsistent, and ultimately dangerous. Over the weekend, it completely failed without warning. As a result, we tragically lost five of our rabbits due to the heat. This is not just a matter of poor performance—it’s a heartbreaking and avoidable outcome. We had a HVAC professional inspect the unit and were told it was 100% out of Freon. For a brand-new unit marketed as DIY and barely a month old, this is completely unacceptable. I trusted the reviews and the hype around Mr. Cool, but buying this unit was a huge mistake. It was marketed as an easy, reliable solution, and it failed on every front—functionally and ethically. Buyer beware…
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Reviewed in the United States on August 12, 2025 by Amazon Customer
Style: 18000 BTU - 230V
Really love this unit. It heats and cools our small space here in Florida and keeps the electric bill down too. The app controls it when away or at home although quirky. The remote control is great. It was fairly easy to install and doesn't take up much space. Lots of YouTube videos show you how to do it. You have an inside, small hang on the wall unit, and a small outside unit. Very quiet. We don't even know if it's running or not until we walk up to it and feel if air is blowing or not. Really can't hear it run. No problems with it and I would buy it again.
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Reviewed in the United States on July 27, 2024 by JaxFL
Style: 18000 BTU - 230V
This item is NOT the Do-It-Yourself Model. Even though the guts are identical to the DIY, it takes more thought and effort to install. You need some special tools, like a vacuum pump, a good flare tool, tubing benders, and some beforehand practice with the flare tool to do it. If you take motors apart, build machinery from scratch, or are a plain dedicated do-yourselfer, you can do it. If you're not willing to invest the time studying up on it and practicing with the flare tool, you'd better forget it. Go with one of the DIY models. Mine works great. I have an 18,000 BTU model installed in a 700-square foot (insulated) garage.The temperature drop across it is about 38 degrees (if room air is 80F, output air will be about 42F). It has no problem at all cooling the place down quickly. It appears to be very smart, only putting out the temperature needed to maintain the setting. It may start out at 42, but after 20 minutes it might be doing 58. The fan is nearly silent.
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Reviewed in the United States on May 8, 2020 by Paul Ramone
Style: 24000 BTU - 230V
Update 1/11/21: Changing rating to 4 stars from 5. Heating is not nearly as efficient as cooling. Here in the Autin area it sometimes drops to the 30s and rarely to the 20s. I've noticed that when the temp falls below 40F it struggles to maintain 68 degrees in the garage. The garage has insulated doors with heated rooms above and on two sides. Yesterday, I noticed it went into defrost at least three times. All-in-all I am still happy, but I had hoped the heating function would have been a little better. Update 10/14: This thing is still going strong. Has run almost every day since June. This thing is awesome!!! Why did I wait so long? Quite as a mouse. Colder than a few hearts I know. Why I chose the Advantage unit over the DIY - Simply because you can't trim the line-set on the DIY. I called MR. Cool and told them I couldn't live with a bunch of coiled AC lines laying on the ground. They suggested the Advantage series. As long as you are comfortable cutting copper line, flaring copper line, running a vacuum and looking at a gauge, then you are set. There are a million YouTube videos showing you how to do it. The unit came with 16 feet of line-set and I only used 50 inches of it. I bought all parts on Amazon except for the conduit, main breaker, and 10 gauge power cable to the disconnect. I also had to purchase a short piece of 3.5" PVC as the supplied sleave for the line-set was too short for my wall. Below are the extra items I purchased on Amazon: 3.5" hole saw for brick - tip - rent a nice roto hammer if you need to go through brick and don't own one. - https://www.amazon.com/gp/product/B07ZSRTFJH/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1 Power Whip https://www.amazon.com/gp/product/B0756N989G/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1 Disconnect - https://www.amazon.com/gp/product/B000LF42NK/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1 410a Valve Core removal tool - I did not like this tool. Poor quality but ended up working https://www.amazon.com/gp/product/B07MCWMQ97/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1 Line-set cover - https://www.amazon.com/gp/product/B07SPL5RZD/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 Nylog - https://www.amazon.com/gp/product/B008HOSQQQ/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 Wall Mount for outdoor unit - https://www.amazon.com/gp/product/B00LDU9R2I/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 Delivery - Why buy at a big box hardware store when Amazon delivers to your door? Came on a lift-gate truck and they delivered it inside the garage. They took it off the pallet and took the pallet with them (which I preferred). The driver was extremely polite. Communication - They (the transport company) kept calling the number on the order, which was not my number. It was an Amazon number in San Antonio. I contacted the seller prior so I had the shipper number. I called the transport company and made arrangements for delivery. I gave them my direct number. However, the driver still had only the Amazon number. Luckily, he called dispatch and they texted me that he was on the way. Could have had the unit on Friday, but got it Monday. Regardless, I was fine with that. Lesson learned - contact the seller and get the transport company contact info and call them. Installation instructions - The manuals are written by someone who speaks English as a secondary language. Spell and grammar check were definitely not used on the install manual. I bought the 24K unit, but the manual is the same for all of them. On page 12 (fig 4.3) there is an itsey-bitsey, teeny-tiny diagram which is needed to mount the indoor unit bracket and locate the center of the hole needed for the line-set. I went online and downloaded the manual in PDF, blew up the diagram and printed it out full page. Note - there is no template with the Advantage Series. The diagram indicates that the vertical center-line for the hole is 151 mm from the center of the right leg of the bracket. There are no reference marks on the bracket to measure from. HOWEVER!!, there is stamped into the metal instructions to measure 120 mm from bracket edge to locate the center-line. So that is what I did. I then went to check my work and measured 151 mm from the center-line I just drew back to the bracket. It came no where near the center of the bracket. So I called tech support for a warm-and-fuzzy. He said to measure about 5 or so inches from edge of bracket. Since the diagram requires you to calculate the outside edge of the unit and then measure from this imaginary line, I asked him about the horizontal center-line for the hole using the bracket as the reference point and he said about an inch up from the bottom of the bracket. Since the hole is 3.5" in diameter I already knew I needed to be 1.75" up from the bottom of the bracket. I politely said goodbye and figured it out on my own. I prefer to work in metric since it is so much easier, but here are the measurements I ended up using to lovcate the center of the hole I needed to drill. 120mm (4.72 in) from bracket right edge for vertical center-line, and 45 mm (1.8 in) from bottom of bracket up for horizontal line. The cross-hair gives the center of the hole. Note: There are other options for the line-set. I chose to have the line-set leave the right rear of the unit. Speaking of measurements - The outdoor unit mounting measurements are in goofy fractions. For instance, 21.26 inches and 350.52 mm. Really? I can't imagine needing to be within 1/100th of a mm to mount a unit. This was more of an annoyance than anything else. Anyway. My point is to take the instructions with a grain of salt. Do your own measurements and math and you will be fine. To the fun part - What can I say? This thing rocks! I was tempted to sleep in the garage last night. Difficulty rating is a "6" on a scale of 1 to 10; Even with the ambiguity of the install manual. The longest part of the process was drilling the hole. I spent 3 hours studying the measurements and also drilling the hole. This also included making sure everything lined up perfectly outside outside. I had the line-set come out perfectly centered between the outside unit and the disconnect. Spent one hour running power. This included the disconnect 45 minutes prepping and hanging inside unit. (after getting bracket hung.. See "hole" above). 45 minutes hanging outside unit on wall. 3 hours making all connections, including trimming line-set and vacuuming system. This was a long review, but I hope this helps someone make a decision. I'm happy with my purchase.
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Reviewed in the United States on June 21, 2020 by Scott W. Scott W.