KEYSTONE
★ 4.8 (144 reviews)

Keystone - 550 Sq. Ft. 14,000 BTU ASHRAE/12,000 BTU DOE Portable Inverter Air Conditioner with Supplementary Heat - White

GTIN 840148729957
Original price was: $649.99.Current price is: $484.99.
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Ships free anywhere in the U.S. Ships from Aiea. Standard delivery in 4–7 business days.
With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 14,000 BTU ASHRAE/12,000 BTU DOE portable air conditioner can effectively cool rooms up to 550 square feet with dehumidification up to 2.5 pints per hour to remove moisture from the air. Perfect for medium-sized living spaces like apartments, bedrooms, living rooms, and much more. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. Money saving features include energy saver mode, sleep mode, and a programmable 24-hour timer. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. Keystone not only provides a 1-year warranty but ensures that you stay cool and comfortable at a cost-conscious price.
Orders processed within 24-48 hours. Standard U.S. delivery takes 4-7 business days with tracking provided via email.
Enjoy 30 days hassle-free returns. Items must be in original condition with box and accessories.
We test every product personally, offer 100% authentic items, 12-month standard warranty, and 24/7 dedicated customer service.

Customer Reviews

144 verified reviews from real customers

4.8 /5
★★★★★
144 verified reviews
5★
82%
4★
12%
3★
4%
2★
1%
1★
1%
A
Ashley T.
May 17, 2026
✓ Verified Buyer
★★★★★

Fast Shipping & Smooth Experience

Ordered this and received it in just 3 days! Tracking was updated regularly. Very satisfied with the delivery speed.

L
Laura M.
Jul 1, 2026
✓ Verified Buyer
★★★★★

Great Communication & Support

I reached out with a query regarding my order and got a polite response within minutes. Fantastic customer service!

D
David K.
Aug 14, 2026
✓ Verified Buyer
★★★★★

Top Notch Packaging

The product arrived safely with double protective packaging. Exceeded my expectations in build quality.

M
Marcus B.
Sep 02, 2026
✓ Verified Buyer
★★★★★

100% Authentic Product

Works perfectly right out of the box. Original seal intact and exactly as described on the website.

S
Sarah P.
Sep 20, 2026
✓ Verified Buyer
★★★★★

Hassle-free Purchase

Checkout was super clean and fast. Got email confirmation instantly. Will definitely buy again from ET Electronics!

J
James R.
Oct 05, 2026
✓ Verified Buyer
★★★★★

Highly Recommended Store

Reliable seller! Fast shipping, pristine packaging, and very helpful updates along the way.