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SEERXtreme Series ENERGY STAR Certified 18000 BTU 25 SEER2 208-230V Mini Split Heat Pump Heating at -25℃

4.4
39 Reviews
Item No: 351764928
C$1,405C$2,95852% Off
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Select: SEERXtreme Series 18000 BTU WiFi Enabled Works at -25℃ Energy Star Certified
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Key Features

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● Extreme Cold Climate Heater with High-Efficiency Performance: Engineered for year-round comfort, this mini split delivers reliable heating even in frigid temperatures as low as -25℃, thanks to its advanced inverter compressor and chassis electrical heating system. It also provides efficient cooling in extreme heat up to 52℃, making it ideal for all-season use in diverse climates. 
● ENERGY STAR Certified with 25 SEER2: Achieve significant reductions in electricity bills with this ENERGY STAR certified unit, featuring a high 25 SEER2 rating. The inverter technology adjusts compressor speed to avoid frequent on/off cycling, consuming less energy while maintaining consistent temperatures—up to 30% more efficient than conventional systems.
● Smart WiFi Control via App & Voice Commands: Manage your home climate effortlessly using the app, voice commands with Alexa, or the included remote control. Schedule heating/cooling cycles and adjust settings remotely for optimal comfort before you arrive home.
● All-Season Modes with Self-Cleaning & Auto-Defrost: Choose from 7 versatile modes (heat, cool, dry, fan, auto, sleep, ECO) and 4 fan speeds to customize your comfort. The self-cleaning function operates at 57℃ to prevent mold buildup, while auto-defrost ensures reliable performance in icy conditions.
● Complete Installation Kit & Professional Setup Note: Includes a pre-charged outdoor unit, indoor unit, remote, and installation accessories. Note: Professional installation is required to ensure warranty compliance and optimal performance

No Information

Specifications

Color of Indoor Unit White
Color of Outdoor Unit White
Material Metal, Aluminum, Plastic
Indoor Unit Size 45" x 9" x 13"
Outdoor Unit Size 35.5" x 14" x 27.5"
Max Control Distance 26 ft
Diameter of Air Pipe 1/2"
Diameter of Liquid Pipe 1/4"
Diameter of Drain Pipe 0.67"
Cooling Capacity 18000 BTU
Heating Capacity 18200 BTU
Cooling Power 1250W
Heating Power 1300W
Voltage 208-230V~60Hz
Heat Pump 1.5 ton
Coverage Area 1250 sq.ft
Dehumidifying Capacity 81 Pints/Day
Air Flow Rate 765 CFM
Temperature Setting Range 16℃~32℃
Operating Ambient Temperature -25℃-52℃
Refrigeration R32
HSPF2 10.5
SEER2 25
Indoor Noise Level 28-50dB
Outdoor Noise Level 57dB
Net Weight of Indoor Unit 28.5 lbs
Net Weight of Outdoor Unit 92.5 lbs
Box Qty 2
Packages 1 x Indoor Unit, Outdoor Unit
1 x 13 ft Copper Connection Pipe - Liquid Pipe 1 x 13 ft Copper Connection Pipe - Air Pipe
1 x 15 ft Communication Wire 1 x 6.5 ft Drain Hose
1 x Remote Control, Tape, Wall Sleeve 1 x Luting (Putty), User Guide
  • Overview

  • Reviews

  • Q&A

  • Manuals

Overview

● Heating in frigid temperatures as low as -25℃ with built-in chassis electrical heating system
● Fast cooling and heating with the powerful compressor and heat pump
● Stable, silent, and efficient performance thanks to the inverter technology
● Boasts ENERGY STAR, ETL and AHRI certifications
● Allows you to control your unit remotely with the free app
● Works with Alexa for convenient voice control
● Built in 7 modes for all-season use
● 4 fan speeds (low, mid, high, turbo) meet personal needs
● Remote control a temperature unit switch (℉/℃) 
● Features up and down, left and right adjustable airflow for wide coverage 
● Ensures comfy sleeping environment with screen off function and 24H timer
● High-temp self cleaning can keep your air fresh
● Self-cleaning operation: condensation, frost, melting, sterilization
● Equipped with removable and washable filters
● Uses green and energy-efficient R32 refrigerant
● About 30% energy cost saved compared normal air conditioners
● Comes with comprehensive installation kit

Installation guide

How to Install a Costway Ductless Mini Split Air Conditioner

Reviews

4.4
39 Reviews
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26
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Frequent Mentions

  • V

    Excellent AC

    05/24/2026

    Installed 2 and it works perfectly. Not yet experienced during winter but it will be fine with heating baseboards.

    Customer Photos
    Preview
  • V

    Confirmed providing heat at -17C

    03/23/2026

    Very energy efficient, gentle warm air with many fan speed, very quiet. No problem to keep 55 sq-m space at the set 21C temperature this winter so far. Come with everything from the picture, plus extra 2M of 12/3 wire for 115V AC line (not shown). High SEER2, 115V, best offer from Costway. Bought a 2nd Unit. A/C feature to check out when the summer comes.

    Customer Photos
    Preview
    Customer Photos
    Preview
  • J

    Im telling you

    03/17/2026

    This is by far the easiest mini split to install I’ve ever done and The operation of this unit is very simple. I’ve had it for over a year no problems, but it still to this day. I’m looking to buy another one.

    Customer Photos
    Preview
  • F

    Perfect for My Cabin! Efficient, Quiet & Smart!

    03/16/2026

    I installed this 12,000 BTU mini split in my cozy wooden cabin and I’m beyond impressed. I hired a pro and the installation is about 4 hours. The unit looks sleek and modern, blending perfectly with the wood-paneled walls.

    Customer Photos
    Preview
    Customer Photos
    Preview
  • D

    Easy and functional

    11/25/2025

    This works amazing. Put into a tiny home and still is going strong. Easy to install and took no time to do.

    Customer Photos
    Preview
    Customer Photos
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Q&A

  • Q:
    whats app for wifi
    A:
    The app you need to control the unit via WiFi is called AC Freedom. You can find more details in the user manual provided with the product.
    Costway representative
  • Q:
    On the 18000 btu hyper heat until, what size breaker is required?
    A:
    For the 18,000 BTU unit, it is recommended to use a 20A circuit breaker for proper and safe operation.
    Costway representative
  • Q:
    Does this minisplit model have a black airhandler option?
    A:
    No, there is no black air handler option available for this minisplit model.
    Costway representative
  • Q:
    What electric wire size and how many wires does this 18000 BTU system require in North America? Is a Neutral wire required? (item number 351764928)
    A:
    This 220V unit requires a 3-conductor power cord with 18 AWG rating.
    Costway representative
    Q:
    What is the Amperage of this unit?
    A:
    The circuit breaker (fuse) needs to higher than 20A.
    Q:
    MAX 20AMP
    A:
    The rated running current is 5.5A in cooling mode and 5.7A in heating mode. The maximum input current of the unit is 12A.
    Costway representative
  • Q:
    Wants the coolest out side temperature this until will work in
    A:
    This mini split delivers reliable heating even in frigid temperatures as low as -25℃, thanks to its advanced inverter compressor and chassis electrical heating system. If there is any issue with your product. Please forward your question or concern as well as the order number to our customer support at cs.ca@costway.com. After order confirmation, our customer support are standing by and ready to help you resolve any issues you may have.
    Costway representative
  • Q:
    What length does the 18000btu unit comes with and are they precharged
    A:
    They are precharged.
    Costway representative
    Q:
    THE LINES ARE NOT PRECHARGED
    A:
    Pre-charged refrigerant is in the compressor. The copper line set is 13 ft.
    Costway representative
  • Q:
    Does this mini split come with a 1/4-inch line and 1/2 inch installation refringent line set?
    A:
    Yes.
    Costway representative
  • Q:
    What is the warranty on these mini split
    A:
    The mini split air conditioner comes with an 8-year warranty for the compressor and a 5-year warranty for parts. This warranty ensures that you're covered for any manufacturing defects or issues that may arise during the specified periods.
    Costway representative
  • Q:
    This device is supposed to operate at -25°C, but at this temperature, does it retain its 18,200 BTU capacity, or does it lose a percentage of its efficiency? If it loses efficiency, by how much %?
    A:
    The unit is designed to operate in ambient temperatures as low as -25°C. However, it is important to note that while it can function at this temperature, the heating efficiency may diminish. Generally, performance can be affected in extreme cold, but exact figures would depend on various factors including installation and environmental conditions. For precise details, it may be best to consult with customer support or refer to the product manual for more information on performance metrics at low temperatures.
    Costway representative
  • Q:
    Does this unit have a automatic restart if the power goes out?
    A:
    The unit with SKU FP10897US-WH+ does not have an automatic restart feature. In the event of a power outage, you will need to manually restart the unit once power is restored.
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C$250

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