What is the smallest window width that can fit an air conditioner?

By removing standard side accordion curtains and using our custom narrow-mounting brackets, our compact 6,000 BTU LG Dual Inverter or GE Built-In unit (chassis width 19.5 inches) can fit into window openings as narrow as 20 to 21 inches wide.

Can you install an AC in a tall, narrow slider or casement window?

Yes! For tall, skinny openings, we build custom acrylic or insulated vertical filler panels above the unit, sealing the vertical height while fitting the narrow width perfectly.

Does a narrow window AC provide enough cooling for an Oahu bedroom?

Yes! A compact 6,000 to 8,000 BTU Dual Inverter unit delivers ample cooling power for bedrooms up to 350 sq ft, while running quietly at 44 dB.

Fits Openings Under 22 Inches • Custom Vertical Framing

Narrow Window AC Solutions Hawaii

Have a tight, narrow window opening that standard big-box store air conditioners won’t fit into? Our compact 19.5-inch chassis LG Dual Inverters, combined with custom narrow-frame installation techniques, deliver whisper-quiet 44 dB cooling into tight island window openings.

Shop Compact Inverter Models Narrow Window Desk: (808) 488-1111

19.5" Slim Chassis

Our compact 6,000 BTU models have an ultra-slim footprint designed to squeeze into narrow window frames with ease.

Accordion Removal

We remove bulky side accordion curtains and custom-fabricate ultra-slim foam perimeter seals for ultra-tight fits.

44 dB Whisper Sleep

Compact size does not mean loud operation. Enjoy whisper cooling ideal for bedrooms and home offices.

SIGNATURE ALOHA CRAFTSMANSHIP

Protective Drop-Cloth Standard

Our Oahu cooling technicians treat your home with great care. We lay protective floor drop cloths under every window during installation and leave your home cleaner than when we arrived.

Standard Brackets: We supply and install standard exterior window AC support brackets as an additional cost option with installation to safely support heavy units.

Waipahu Warehouse Direct

Pick up in Waipahu or choose flat $50 island-wide delivery with installation scheduling.

View Compact Models

Narrow Window AC FAQs

By removing standard side accordion curtains and using our custom narrow-mounting brackets, our compact 6,000 BTU LG Dual Inverter unit (chassis width 19.5 inches) can fit into window openings as narrow as 20 to 21 inches wide.

Live Waipahu Warehouse Stock • $45 HECO Rebate Eligible

In-Stock Condo, Wall Sleeve & Narrow Window ACs

Genuine GE 26-inch Built-In Thru-the-Wall units and whisper-quiet LG Dual Inverters in stock at our Waipahu warehouse.

View All 12 In-Stock Models ($395–$1,200)

5 In Stock115V

8,200 BTU • Up to 290 sq. ft.

GE 8,200 BTU (AJCQ08AWJ)

$1,000Waipahu Direct

Specs

4 In Stock115V

12,000 BTU • Up to 390 sq. ft.

GE 12,000 BTU (AJCQ12AXXWA)

$1,200Waipahu Direct

Specs

10 In Stock115V

10,000 BTU • Up to 330 sq. ft.

LG Dual Inverter 10,000 BTU (LW1022IVSM)

$650Waipahu Direct

-$45 Rebate

Specs

11 In Stock115V

6,000 BTU • Up to 220 sq. ft.

LG Dual Inverter 6,000 BTU (LW6023IVSM)

$560Waipahu Direct

-$45 Rebate

Specs

Free Waipahu Pickup (94-150 Leoleo St #203, by appt)$50 Flat Oahu Delivery • US-Issued Cards Only

⭐ 4.9/5 Rating (142+ Verified Reviews)

Narrow Window AC Reviews

Real reviews from Oahu homeowners with compact window openings

Explore All 142+ Reviews

Bryan M.

Verified

Waipahu•Google Verified

Waipahu Warehouse PickupTech: Brian

“I found this company on Google. They are located in the Waipahu industrial area across from the old City Mill. The LG AC unit my mother needed was in stock - so...”

Waipahu Warehouse CustomerEst. 2005 • Oahu

Tommylynn B.

Verified

Honolulu•Yelp Verified

Window AC InstallationTech: Brian

“I replaced two window ac units, called on Wednesday and Brian came out the next day. Professional, timely and installation was flawless! Mahalo Brian!”