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SPT WA-2511S window air conditioner

Sunpentown WA-1811S 18500 BTU Window Air Conditioner

Model: WA-1811S | SKU: su2675
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Price: $549.95
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  • FREE Standard Shipping
  • In Stock - Usually ships in 24 to 48 hours.

Additional Warranty Options Available
3-Year Appliance Warranty (Date-of-Purchase) ($49.95) Details
5-Year Appliance Warranty (Date-of-Purchase) ($99.95) Details
  • Product Overview

    Keep comfortably cool and dry without sending your electric bills skyrocketing with the energy-efficient Sunpentown 18,500-BTU Window Air Conditioner. This model connects to any 230/208-volt electrical outlet, and with 18,500 BTUs of cooling power, it can keep single rooms, studios, and small apartments refreshingly cool even when outdoor temperatures soar.

    Multi-Functional Operation

    Featuring 3 fan speeds and 4 operational modes, the SPT WA-1811SWindow Air Conditioner lets you enjoy a variety of comfort settings:

    • Auto mode signals the Sunpentown WA-1811S to maintain your chosen temperature setting within a set range at a set speed, switching back and forth between cooling and fan-only modes.
    • Cool mode maintains your ideal temperature within 2 degrees F and lets you set the fan speed according to your preference.
    • In Dry mode, this air conditioner works like a dehumidifier, extracting up to 3.27 pints of water vapor from the air every hour.
    • A Fan-Only mode brings fresh air indoors for non-cooling ventilation.

    Energy-Efficient Design

    The Sunpentown WA-1811S Window Air Conditioner has an Energy Efficiency Ratio (EER) ratio of 10.7, saving you money on electrical bills without compromising comfort. This model also boasts an energy-saving function that cycles the AC on for 2 minutes at 10-minute intervals as long as your favored temperature setting is maintained. When the temperature rises above your setting, it switches back to the regular cooling mode.

    Key Operation and Design Features

    • Designed to fit windows 26.5 inches to 40.5 inches wide, the Sunpentown WA-1811S comes with everything you need for installation, including hardware mounts, 2 accordion panels, and window seals.
    • Electronic controls and a digital display make it easy to monitor and adjust the model's 3 fan speeds and 4 operational settings.
    • A 24-hour programmable timer lets you schedule the air conditioner to start operation up to 10 hours in advance or to switch off automatically when you're away from home.
    • A user-friendly remote control allows you to change settings from anywhere in the room.
    • An easily accessible air filter washes up in a snap, saving you money on filter replacements.
    • Adjustable louvers let you direct the flow of conditioned air up or down and side to side.

    Additional Features

    • Sleep Mode: A sleep feature automatically raises the temperature setting by 2 degrees every 30 minutes for the first hour and then maintains the new setting for 6 hours; this provides quiet and efficient cooling while you sleep.
    • Check-Filter Light: Its "check filter" message appears on the display when it's time to clean the air filter.
    • Slide-Out Chassis: A removable chassis simplifies maintenance chores for a longer service life.
    • Automatic Restart: An auto restart feature allows the model to retain settings in case of a power outage.
    • Eco-Friendly Operation: The Sunpentown model uses R-410A, a non-ozone-depleting refrigerant.


    If you’re looking for a powerful, efficient AC was a ton of extra features, consider this Sunpentown AC for large spaces or small apartments.

    What Customers Love

    • Packed with Features: Multiple modes, a Sleep feature, programmable timer, and energy-saving function give you various options for operation.
    • Efficient Power: A 10.7 EER coupled with 18,500 BTUs make it not only one of the most powerful window models.

    Things to Consider

    • 230-Volts: This model requires a 230-volt plug, so make sure your space can handle this requirement.

    Manufacturer's Warranty

    1 year Limited

    Manufacturer's Literature

    User's Guide and Installation Instructions for Sunpentown WA-1811S Window Air Conditioner
    User's Guide and Installation Instructions for Sunpentown WA-1811S Window Air Conditioner
    Energy Guide
    WA-1811S Energy Guide Label

    View All Window Air Conditioners »
  • Specifications

    Window Installation TypeSingle/Double Hung
    Cooling Power18500 BTUs
    Recommended Coverage Area1000 sq. ft.
    Chassis TypeFixed
    Height17.19 in.
    Width23.63 in.
    Depth25.5 in.
    Weight115 lbs.
    Minimum Window Width26.5 in
    Maximum Window Width40.5 in
    Programmable TimerYes
    Refrigerant TypeR-410A
    Voltage220-240 V
    Maximum Cooling Wattage1730 W
    Maximum Cooling Amperage8.3 Amps
    Number of Fan Speeds3
    Fan-Only ModeYes
    Heat Mode No
    Dehumidifier ModeYes
    Moisture Removal per Hour3.27 pints
    Sleep ModeYes
    Remote ControlYes
    Airflow Direction ControlYes
    Air FilterYes
    Maximum Cubic Feet per Minute (CFM)760 CFM
    Minimum Noise Level52 dB
    Maximum Noise Level59 dB
    Wall Sleeve Included Yes
    Thru-Wall Installation OptionYes
    Through-Wall Finished Width23.875 in
    Check Filter IndicatorYes
    Intrusion ProtectionYes
    Insect BarrierNo
    Power Cord Length6 ft.
    Plug Face Type14LCDI
    Circuit Breaker Rating250V-20A
    Energy Efficiency Ratio (EER)10.7
    Energy StarYes
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