Keystone 8,000 BTU Window Air Conditioner with Heat

SKU: ke17568  |  Model: KSTHW08B
Regular price $429.99

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Manufacturer's Warranty

1-Year Parts and Labor Warranty; 4-Year Sealed System Warranty

What's In The Box?

  • Keystone 8,000 BTU Window Air Conditioner with Heat
  • Frame Assembly
  • Installation Hardware
  • Remote Control
  • Remote Battery (2)
  • Washable Air Filter
  • Owner's Manual, Guides, and Other Documents

Stay comfortable in every season with the Keystone 8,000 BTU Window Air Conditioner and supplemental heater. Designed for spaces up to 350 square feet, it combines efficient cooling, gentle electric heat, and light dehumidification to help you maintain an ideal indoor environment day and night.

Thoughtful electronic controls, a temperature-sensing remote, and multiple operating modes simplify daily use while fitting neatly into double-hung windows. Whether you need heating and cooling in a small office, rental property, or bedroom, this dependable window AC with heat provides year-round climate control without taking up floor space.

Key Features and Benefits of the Keystone 8,000 BTU Window Air Conditioner with Heat

  • Dual-Function Climate Control: Provides up to 8,000 BTU of cooling, 3,500 BTU of supplemental heat, and removes up to 1.9 pints per hour to keep you cool in summer, warm in the winter, and comfortable in spaces up to 350 square feet all year.
  • Temperature-Sensing Remote: The handheld remote monitors the air where you are, not just at the grille, so this window AC with heat can adjust to maintain temperatures based on your exact location for peak comfort.
  • Energy Saver and Sleep Modes: Automatic fan cycling and gradual overnight temperature adjustments reduce energy consumption and help lower utility costs.
  • Programmable Timer: Schedule a 24-hour timer to start or stop the AC or heater around your workday, reducing run time when the space is unoccupied.
  • Adjustable Fan Speeds: Choose between 3 airflow levels to match your comfort and noise preferences, with sound ratings as low as 55 dB on low.
  • Four-Way Adjustable Louvers: Direct conditioned air up, down, left, or right to evenly distribute conditioned air and eliminate hot or cold spots.
  • Washable Mesh Filter with Alert: The filter check indicator and tilt-out design make cleaning quick when maintenance is due, keeping performance on track.
  • Auto-Restart After Outages: The compressor and fan resume programmed settings once power is restored, protecting your schedule and comfort.

Complete Window-Mount Kit

The Keystone 8,000 BTU Window Air Conditioner with Heat includes a window installation kit with a frame assembly, window seals, a 6.5-foot 5-15P power cable, and hardware for a snug, vibration-free installation in standard double-hung windows with a 26.8 to 36-inch wide and 16.5-inch high opening. Operating on a standard 115-volt outlet and drawing only 734 watts during cooling, the Keystone conserves power while providing all-season cooling and heating. When outside temperatures hover above 23 degrees F, you can rely on the heat function to help warm the room for supplemental zoned comfort during mid-season days.

Sylvane’s Expert Take

This Keystone Window AC with heat stands out for its balanced performance and easy controls. You get reliable cooling, convenient off-season warmth, and sensible efficiency features that keep operating costs predictable. The temperature-sensing remote and four-way louvers provide the personalized comfort our customers ask for most often. If you need a compact, straightforward solution for a single room that works all year, this model deserves a close look.

Customer Reviews