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comfort-aire 5000 BTU window air conditioner

Comfort-Aire 5000 BTU Window Air Conditioner (RG-51L)

Model: RG-51L | SKU: co2594
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Price: $149.95
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  • FREE 2 Day Express Shipping
  • In Stock - Order Now. Your item will ship Tuesday, Apr 21st

Additional Warranty Options Available
1-Year Extended Warranty (Product Replacement) ($19.95) Details
2-Year Extended Warranty (Product Replacement) ($26.95) Details
  • Product Overview

    The Comfort-Aire RG-51L Window Air Conditioner features 2 operating modes and a 9.7 energy efficiency ratio (EER). This budget-friendly choice offers 5,000 BTUs of power, making it ideal for cooling spaces between 100 and 150 square feet. A window mounting kit is included for simple installation.

    Functions as an AC and Fan

    The Comfort-Aire RG-51L Window AC is equipped with 2 operating modes to keep your home cool. Both modes feature low and high speeds so you’re comfortable at all times.

    Cool: 5,000 BTUs of cooling power force heat out of the air and replace it with a refreshing cool breeze.

    Fan: In cooler temperatures, use fan-only operation to keep your room comfortable.

    Convenient Handling

    This Comfort-Aire model window air conditioner is lightweight and built with convenience in mind. An easy-to-use manual knob with 7 position controls helps you quickly find your desired temperature. Adjustable louvers direct the air around the room or to a specific area as needed. Support brackets for outside your window provide extra support to this model.

    Window Kit Included

    The Comfort-Aire RG-51L is equipped with all the tools you need for secure window installation. Its installation kit includes a top-mounting rail, vertical sash seal, accordion panels, and support brackets. It can be mounted in windows between 23 to 36 inches wide or through an outside wall.

    This is a 115-volt AC that uses a NEMA 5-15P plug type. The 3-prong face looks like this:

    Additional Features

    • Eco-Friendly: The R-410A refrigerant does not contribute to ozone depletion.
    • Slide-Out Filter: The slide-out filter is easy to remove, clean, and reuse.
    • Window Mounting Kit: The kit is included and makes installation a breeze.
    • Adjustable Airflow: Two-way louvers allow for adjustable air circulation.
    • Manual Controls: A 7-position control panel allows for simple temperature adjustment.
    • Lightweight Cabinet: This compact AC weighs just 40 pounds and comes with attractive decorative front grille to blend with any décor.


    The 5,000 BTU window air conditioner is an efficient and simple-to-use AC that offers 2 operating modes, a 9.7 EER, and 5,000 BTUs of power to cool small spaces up to 150 square feet.

    What Customers Love

    • 2 Operating Modes: This model keeps your home cool and comfortable with a Cooling mode and fan-only option.
    • Convenient: The small window air conditioner is lightweight, energy-efficient, and features a 7-knob control panel to easily find your optimal room temperature.

    Things To Consider

    • No Remote Control: Some customers enjoy having a digital remote control to change modes or room temperature.

    Manufacturer's Warranty

    1 Year Limited (parts and labor) & 5 Year Limited (sealed system)

    Manufacturer's Literature

    Owner's Manual
    User guide for the Comfort-Aire RG-51J 5000 BTU Window Air Conditioner
    Energy Guide Label
    Includes information about the estimated yearly operating cost for the Comfort-Aire RG-51J Window AC.

    What's In The Box?

    • Comfort-Aire Window Air Conditioner
    • Window Kit
    • Owner’s Manual

    View All Window Air Conditioners »
  • Specifications

    Window Installation TypeSingle/Double Hung
    Cooling Power5000 BTUs
    Recommended Coverage Area125 sq. ft.
    Chassis TypeFixed
    Height12.063 in.
    Width16 in.
    Depth13.25 in.
    Weight40 lbs.
    Minimum Window Width16 in
    Maximum Window Width36 in
    Programmable TimerNo
    Refrigerant TypeR-410A
    Voltage110-120 V
    Maximum Cooling Amperage4.5 Amps
    Number of Fan Speeds2
    Fan-Only ModeYes
    Heat Mode No
    Dehumidifier ModeYes
    Moisture Removal per Hour1.27 pints
    Sleep ModeNo
    Remote ControlNo
    Airflow Direction ControlYes
    Air FilterYes
    Maximum Cubic Feet per Minute (CFM)123 CFM
    Minimum Noise Level50 dB
    Maximum Noise Level52 dB
    Wall Sleeve Included No
    Thru-Wall Installation OptionNo
    Check Filter IndicatorNo
    Intrusion ProtectionNo
    Insect BarrierNo
    Plug Face Type5-15P
    Energy Efficiency Ratio (EER)9.7
    Energy StarNo
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