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12000 BTU Mini Split Ac/Heating System, 19 SEER2 115V Air Conditioner Inverter Heating and Cooling, Wall Mounted Ductless ac split units Cools Up to 750sq.ft, 24H Timer, Installation Kit

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Style: 12000BTU-115V-19 SEER2


Features

  • Powerful 12,000 BTU Cooling & Heating- This mini split AC/heating system delivers 12,000 BTU cooling and 12,500 BTU heating, covering up to 750 sq. ft. With a temperature range from 61F to 88F, it provides rapid and consistent temperature control, making it perfect for bedrooms, living rooms, offices, and more.
  • Energy Efficient & Eco-Friendly- With a 19 SEER2 rating and HSPF2 8.5, this split-system air conditioner reduces energy costs while maintaining strong performance. The greener refrigerant boosts efficiency and lowers environmental impact, offering a sustainable cooling and heating solution.
  • 4 Modes & Smart ECO Function- This 12000 BTU mini split AC/heating system features cooling/heating/fan/ dehumidification modes for year-round comfort. The ECO mode optimizes energy use for both cooling and heating, ensuring you stay comfortable without wasting energy. It keeps you cozy and your bills low.
  • Sleep-Friendly & Thoughtful Design- Operating at just 42dB, this split-system air conditioner ensures peaceful nights. Sleep Mode gradually adjusts the temperature for comfort, while Silent Mode disables beeping from the remote control. The 24-hour timer and LED-off function further reduce disturbances.
  • Complete Mini Split System Includes indoor air handler, outdoor condenser, and a 9ft. line set for a comprehensive installation. (Professional installation requiredthis is NOT a DIY mini split system.)
  • Customizable Airflow & Wide Coverage- The AC split unit includes 4 fan speeds (high/medium/low/Auto) and a 90vertical swing. Whether you're relaxing in bed or hosting a gathering, you can adjust the fan settings to maintain the perfect comfort level throughout your space.
  • Effortless Control & Simple Maintenance- Equipped with a convenient remote control, this mini split AC/heating system allows for easy adjustments from anywhere in the room. LED display provides a clear view of settings, while the removable, washable air filter keeps the air fresh, promoting a healthier living space.

Brand: Rellytech


Capacity: 4800 Cubic Feet


Cooling Power: 12000 British Thermal Units


Special Feature: Fast Cooling, Heating & Cooling Function, Inverter Compressor, Remote Controlled, Sleep Mode


Product Dimensions: 31.9"D x 12"W x 8.5"H


Seasonal Energy Efficiency Ratio (SEER): 19


Voltage: 115 Volts (AC)


Noise Level: 42 Decibels


Power Source: Corded Electric


Form Factor: Mini-Split


Brand Name: ‎Rellytech


Model Info: ‎12K-115V


Product Dimensions: ‎31.9 x 12 x 8.5 inches


Item model number: ‎12K-115V


Efficiency: ‎High


Capacity: ‎4800 Cubic Feet


Annual Energy Consumption: ‎1367 Kilowatt Hours Per Year


Noise: ‎42 Decibels


Installation Type: ‎Split System


Form Factor: ‎Mini-Split


Special Features: ‎Fast Cooling, Heating & Cooling Function, Inverter Compressor, Remote Controlled, Sleep Mode


Voltage: ‎115 Volts (AC)


Material Type: ‎Plastic


Included Components: ‎Remote Control


Floor Area: ‎750 Square Feet


Date First Available: May 28, 2025


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

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 buy!
Style: 12000BTU-115V-19 SEER2
Had it running for about two months now and it’s ran flawlessly. It is the perfect size for my upstairs rental and cools it down quickly. You can barely hear it running if you hear it at all. Looks good on the wall also, it’s not tacky.
Reviewed in the United States on December 4, 2025 by JT Hoffman JT Hoffman

  • A company that stands behind their product!
Style: 12000BTU-115V-19 SEER2
I ordered 3 mini split systems from Rellytech Direct through Amazon. Two of them installed very easy, but the last one had a problem (a leaky line in the interior part of the head.) I contacted the company through the Amazon link, and they responded back quickly. We explained the problem and sent back pictures. They came back and said a new head is on its way! It is a great pleasure to do business with a company that stands behind their product. Plus, they compensated me for the aggravation. You can use this company with confidence! ... show more
Reviewed in the United States on November 11, 2025 by Chuck Chuck

  • A/C & HEAT
Style: 18000BTU-230V-19 SEER2
Easy to install & works better than expected!
Reviewed in the United States on December 16, 2025 by Jason Waters Jason Waters

  • Amazing Value
Style: 12000BTU-115V-19 SEER2
Works great ,it cooled down my Casita within minutes great quality and value
Reviewed in the United States on October 14, 2025 by ERIC & ADRIANA YANEZ

  • Impressive performance and reasonably priced
Style: 18000BTU-230V-19 SEER2
This past month’s been brutal with those 100+ degree days—like, the kind where stepping outside feels like walking into a sauna. But this AC? Didn’t skip a beat. We keep it steady at 74°F, and honestly? Any lower and we’d be reaching for blankets. It kicks on when it needs to, cools the room back down quick—so that’s perfect for us! ... show more
Reviewed in the United States on August 13, 2025 by Belinda Gardner

  • No noises, no dripping
We hired professional HVAC installers to set it up for us. No weird noises, no dripping—just steady, cool air. My husband was worried about shipping issues before, since we’d had problems with large appliance deliveries in the past, but this mini split arrived in perfect condition. Totally worth every penny! ... show more
Reviewed in the United States on August 9, 2025 by WAHID BUKSH

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