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Keystone KSTAW05A Window Air Conditioner Review

Overall Rating:
4.7 out of 5 stars
Keystone KSTAW05A window air conditionerClick to Enlarge

Keystone KSTAW05A

The Keystone KSTAW05A window mounted air conditioning unit may only have a capacity of 5000 BTU, but the manufacturer has managed to include many of the features you would expect of a larger unit. It’s very clean in appearance and the touch-button control panel is conveniently placed at the front of the unit.

Review Details

Unlike many other models that have a 5000 BTU capacity, the KSTAW05A comes with a full function remote control that has “follow-me” technology. This means your unit will automatically adjust to the speed required when it receives a signal from the remote telling it the temperature is different from the one set. So, as the temperature rises, the remote tells the unit and the speeds adjust accordingly.

The KSTAW05A will also help keep the air free from airborne particles because it’s fitted with a low maintenance easy-clean filter, and, for further convenience, Keystone has included a “clean filter” indicator light.
With a timer and sleep mode, this model is perfect for the bedroom and works quietly overnight so as not to disturb sleep.

What We Liked

  • Energy Efficient
    The KSTAW05A comes with an energy star rating so you can be sure you won’t receive high energy bills and help towards a greener environment.
  • Remote Control
    The unit comes complete with a full functional remote control with “follow me” technology. If the temperature rises above the settings, the remote cleverly tells the main unit and the fan speed adjusts accordingly.
  • Perfect Night-Time Operation
    This model has both a timer and sleep mode, making it perfect for use in the bedroom.
  • Low Maintenance
    This unit is equipped with a “clean filter” indicator. The filter itself will last up to 250 hours of use and is easy to remove for washing.

What We Didn't Like

  • Cooling Expectations
    There have been mixed reviews on how well this A/C cools a room, but you have to remember it is only suited for areas up to 150 square feet. Anything larger and it will struggle.
  • No Vent Mode
    This particular model from Keystone does not come with a vent mode. This means it will not draw air from outside, rather it will cool the air that’s already circulating inside the room.


There are not many other 5000 BTU capacity air conditioners on the market that offer the sorts of features the KSTAW05A does. Incorporating additions such as “follow me” remote technology, sleep mode and easy maintenance is unusual in this category. Overall this unit has rated well above average on many other retail sites and the general consensus of opinion is it’s well worth the money.

Review by AirReflect ©
Last modified: April 19, 2013 (Prices are updated daily)
Keystone KSTAW05A
Dimensions (L x W x H):
15.8 x 16.2 x 12.5 inches
39 lbs
Power Supply:
115 Volts
485 Watt, 4.5 Amp
Noise level:
55 dB
Coverage Area:
150 Square Feet
147 Cubic Feet per Minute
Heater Mode:
Cooling Capacity:
5000 BTU/h
Adjustable Fan Speed:
Yes, 3 speeds
Remote Control:
Fan-Only Mode:
Air Direction Control:
Oscillate Option:
Air Filter:
Particle Filter:
Antimicrobial Protection:
Dehumidification Option:
Automatic Restart:
Efficiency Ratio:
10.7 EER
Drain Option:
Energy Star Certified:
2 years

Keystone KSTAW05A Prices

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