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Mountman 12000 BTU Mini Split AC/Heating System,19 SEER2 208/230V Energy Efficient Ductless Inverter System,Cools Up to 750 Sq.Ft with Pre-Charged Condenser,Heat Pump & Installation Kits

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$479.99 Why this price?
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Availability: Only 3 left in stock, order soon!
Fulfilled by Mountman

Arrives May 11 – May 12
Order within 22 hours and 15 minutes
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Size: 12000-208/230


Features

  • 4 Flexible Modes for Year-Round Comfort :Choose from Cool, Heat, Dry, Fan modes to adapt to any season. Customize airflow with 4 fan speeds (Low/Medium/High/Auto), plus specialized Sleep Mode (ultra-quiet 26dB), ECO Mode (up to 30% energy savings), and Turbo Boost for rapid cooling/heating
  • Remote Control, Silent Comfort:Take control of your comfort with our mini split ac. The user - friendly remote lets you adjust settings from the comfort of your bed or sofa. With a 24 hour timer, you can customize when it runs, saving energy. Its ultra - quiet operation ensures peaceful sleep, and the remote's display auto - shuts off after 10 seconds of inactivity, so nothing disturbs your rest
  • Auto-Maintain, Constant Comfort: Our mini split air conditioner takes the hassle out of maintenance with intelligent self-cleaning and automatic defrost functions. The high-temperature self-clean keeps the indoor unit dry, while the washable anti-dust filter maintains fresh air with a quick monthly rinse. The automatic defrost function activates intelligently to ensure stable, uninterrupted heating performance. With these advanced features, your AC runs efficiently in any climate, delivering consistent year-round comfort with minimal effort.
  • Rapid Refreshment for Your Space:Beat the heat in a flash with our 12,000 BTU mini split ac. Thanks to advanced inverter technology, its a cooling powerhouse, effortlessly chilling rooms up to 750 square feet. Whether its your bedroom, living room, office, or apartment, enjoy swift, consistent cooling that transforms any space into a comfortable oasis in no time
  • All-Season Comfort:This 12,000 BTU mini split AC and heating system offers solid climate control, with a precision-engineered compressor and energy-saving operation. Pre-charged with advanced R32 refrigerant, its a practical eco-friendly optionproviding efficient cooling in summer and reliable heating in winter. The optimized design reduces frequent compressor cycling, helping extend service life while maintaining steady comfort year-round

Brand: Mountman


Capacity: 1 Tons


Cooling Power: 12000 British Thermal Units


Special Feature: Eco-Mode, Sleep Mode, Fan Mode, Auto-Swing, Dry Mode,Inverter Compressor,Silent Mode, Heating & Cooling Function,Fast Cooling See more


Product Dimensions: 8.23"D x 32.28"W x 11.93"H


Start year: 2025


Seasonal Energy Efficiency Ratio (SEER): 19


Voltage: 230 Volts


Noise Level: 26 Decibels


Refrigerant: R-32


Cooling Power: 12000 British Thermal Units


Additional Features: Eco-Mode, Sleep Mode, Fan Mode, Auto-Swing, Dry Mode,Inverter Compressor,Silent Mode, Heating & Cooling Function,Fast Cooling


Noise: 26 Decibels


Refrigerant: R-32


Inverter Type: Has Inverter


Installation Type: Split System


Compressor Type: rotary_scroll


Is Outdoor Unit Required: Yes


Air Conditioner Application: Residential


Voltage: 230 Volts


Power Source: electric


Wattage: 1000 watts


Seasonal Energy Efficiency Ratio (SEER): 19


Efficiency: 19 SEER


Capacity: 1 Tons


Floor Area: 750 Square Feet


Room Type: Bedroom,Kitchen, Residential, Home, Living Room, Gym,Office


Brand Name: Mountman


Start Year: 2025


Model Name: 12000BTU-230V


Model Number: 12000BTU-230V


Manufacturer: Mountman


Item Dimensions D x W x H: 8.23"D x 32.28"W x 11.93"H


Window Opening Maximum Width: 32 Inches


Window Opening Minimum Width: 32.28 Inches


Control Method: Remote


Controller Type: Remote Control


Warranty Type: Lifetime


BEE Star Rating: Energy Star


Form Factor: Mini-Split


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 11 – May 12

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.

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Top Amazon Reviews


  • Great all-in-one system for year-round comfort!
Size: 12000-115
I purchased the Mountman 12000 BTU Mini Split AC/Heating System almost 2 weeks ago, and I couldn’t be happier with it. It cools my space down quickly during hot days and provides consistent when weather cool down. The temperature control is very precise, and the remote makes it super convenient to adjust settings without getting up. The unit runs incredibly quiet — barely noticeable even at night — which is a huge plus for me since it’s installed in my bedroom. The design is sleek and modern, and it blends well with the rest of the room. Installation was pretty straightforward, and the included instructions were clear and easy to follow. I also appreciate how energy efficient it is. I’ve noticed a drop in my electricity bill compared to my old window AC unit, and the heating function works just as efficiently. Overall, this Mountman mini split system delivers great performance, quality, and comfort. Definitely worth every penny and highly recommended for anyone looking for a reliable year-round climate control solution! ... show more
Reviewed in the United States on October 27, 2025 by RayZ

  • Quiet, Comfort & Energy-Efficient air condition
Size: 12000-115
It’s powerful enough to comfortably cool (and heat!) my space up to around 750 sq. ft., and it does it quickly. Within minutes, the room temperature noticeably changes, and once it reaches the set point, the inverter technology keeps it steady without constantly cycling on and off. The 19 SEER2 efficiency rating really shows in day-to-day use. It runs quietly and doesn’t spike the electric bill like older window units or central systems. The 115V setup was perfect for my home, and the pre-charged condenser plus included installation kit made the process much smoother than expected (especially if you’re working with a professional installer). I also love having both cooling and heating in one system. The heat pump works great during chilly mornings, so I don’t have to switch to a separate heater. It’s a clean, ductless look, and the indoor unit blends in nicely on the wall. Overall, this mini split is energy-efficient, quiet, and powerful. If you’re looking for a reliable all-in-one heating and cooling solution for a medium-sized room, this is absolutely worth it. ... show more
Reviewed in the United States on February 7, 2026 by Eason Xuan

  • perfect
Size: 12000-115
Exceptional Value, Easy Installation At 70 years old, this was my first time installing a split-type air conditioner. The manual offered little guidance, but the power wiring diagram clearly showed how to connect the pre-installed standard power cord. After vacuuming the ductwork, I powered it on and it performed exceptionally well. Unexpectedly included accessories: wall caulk, wrapping tape, connection covers, and exterior wall opening protection. It perfectly cools my sunroom in South Texas—where an 8000 BTU window unit previously struggled—and now even provides heating. Incredible value for the price... ... show more
Reviewed in the United States on January 26, 2026 by gogo

  • Great Mini-Split system
Size: 12000-208/230
The changing weather over the past couple of days let me test both cold and heat for this unit and so far, I am very pleased with it, very efficient and whisper quiet. One note though about the 220/230-volt version of the Mountman mini split. The confusing part is the power supply side wiring at the outside unit connection block. It has L1 and L2 meaning both of those connections are hot. But they give you a 3-wire harness for connecting the outside unit to your power disconnect that has 3 wires, black, white and green (ground). 220-volt wiring is normally red and black for hot and white for common. So come to find out these 220/230-volt mini splits do not use a common white wire, they only use the 2 hot wires (white in this case and black). Mountman support quickly responded to confirm the correct wiring. I will certainly purchase from them again if I need another unit ... show more
Reviewed in the United States on April 6, 2026 by Jkeadle2

  • Solid unit
Size: 12000-110/120
Nice and cold! This was my first time setting this up for the house. Other than me making sure the drain hose was not going uphill I’d say a simple setup. Allow enough time to do it right or just have a pro do it less headache. Anyway. Super quiet and my sun room is crispy cold!
Reviewed in the United States on July 7, 2025 by john

  • Just buy it!!
Size: 12000-110/120
So far so good I installed it in my two car garage that’s been insulated and drywalled. Took just a couple minutes to heat up the garage. We have been looking at these for a couple years. I was nervous because I’ve never installed anything like this. But I wouldn’t hesitate to diy this unit. It was super easy and there’s a lot of people that say you need a dedicated breaker for this. I searched for videos like crazy and never found one that showed splicing in a cord so the unit could be plugged into an outlet. So I just went ahead and took the chance I installed three more outlets in my garage, there was only one outlet in the garage so the garage is running off a 15amp breaker from the house and I’ve got a tv a printer phone chargers obviously the light in the garage and I charge my golf cart from an outlet from the garage with no issues. When I had a window A/C unit it used to almost trip the breaker in the garage. I would definitely recommend getting this unit. It’s very cheap and it seems to work very well so far… ... show more
Reviewed in the United States on February 19, 2026 by kenneth e wilson

  • Easy to install
Size: 12000-115
I am an automotive mechanic in Huston.It is very humid and hot in spring and summer.I do need a AC in my garage when I repair the car.temperature control and good quality.cooling down in 10mins.I love it.easy to install.
Reviewed in the United States on March 16, 2026 by Toby

  • Works great
Size: 12000-208/230
Installed my self works great heat and cool. Very quiet!
Reviewed in the United States on March 29, 2026 by Jta

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