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In-Stock Waipahu • $0 Estimates

Order Online or Book $0 In-Home Estimate

Order brand-new LG & GE Window ACs online ($395–$1,200) for free Waipahu pickup or $50 Oahu delivery. Zero upfront cost to book window AC installation or deep cleaning estimates.

Waipahu Warehouse

94-150 Leoleo St. #203, Waipahu, HI 96797

Pickups by appointment • Insured Oahu Specialists

Zero Cost for Estimates • By Appt
Plantation Redwood Architecture • Island Microclimate Calibration

Single-Wall Construction AC Cooling Hawaii

Plantation homes across Kaimuki, Manoa, Kalihi, Pearl City, and Wahiawa have uninsulated single-board walls that absorb intense afternoon heat. Mainstream mainland sizing charts fail here. Our Island Microclimate Calibration ensures your rooms stay cool without tripping older electrical breakers.

HAWAII ARCHITECTURE CHALLENGES

Why Mainland Sizing Rules Fail on Oahu

Thermal Wall Heat Soak

Single 3/4" tongue-and-groove redwood has an R-value of just R-1. Afternoon sun turns exterior walls into radiating radiators.

Older 15A Electrical Circuits

Plantation homes often share a single 15-amp breaker across multiple bedrooms. High startup amp spikes cause frequent breaker trips.

Island Microclimate Fix

We bump capacity by 20–30% with variable-speed Dual Inverters, cooling the heat soak while modulating down to save electricity.

Single-Wall Sizing Recommendation Guide

Room TypeSquare FeetStandard Mainland RecHawaii Single-Wall Rec
Small Bedroom / Nursery100–150 sq ft5,000 BTU6,000 – 8,000 BTU Inverter
Master Bedroom150–250 sq ft6,000 BTU8,000 – 10,000 BTU Inverter
Open Living Room350–550 sq ft10,000 BTU12,000 – 14,000 BTU Inverter
Combined Living / Dining600–900+ sq ft14,000 BTU18,000 – 23,500 BTU (230V)
RESPECTING HISTORIC HAWAII HOMES

Protective Drop-Cloth Standard

Our Oahu cooling technicians treat historic Douglas fir and redwood woodwork with extreme care. We lay protective floor drop cloths under every window and seal openings cleanly without damaging original wood trims.

Standard Brackets: We install standard exterior window AC support brackets anchored securely to outside sills, relieving mechanical strain from older single-wall window frames.

In Stock in Waipahu

Pick up at 94-150 Leoleo St #203 by appointment, or choose flat $50 island-wide delivery with installation.

View Calibrated Inventory

Single-Wall AC FAQs

Historic single-wall plantation homes built between 1920 and 1970 use single 3/4-inch tongue-and-groove cedar or redwood boards with zero fiberglass insulation or wall cavities. By mid-afternoon, intense tropical sunlight radiates heat directly through the exterior walls. Sizing must factor in this thermal load with our Island Microclimate Calibration.
Live Waipahu Warehouse Stock • $45 HECO Rebate Eligible

In-Stock Waipahu Window ACs — Order Online ($395–$1,200)

Brand-new factory-sealed LG & GE units in stock at our Waipahu warehouse (94-150 Leoleo St #203). Free pickup by appointment or $50 flat Oahu delivery.

View All 12 In-Stock Models ($395–$1,200)
20 In Stock115V
LG 8,000 BTU (LW8024RD)
8,000 BTU • Up to 280 sq. ft.

LG 8,000 BTU (LW8024RD)

$395Waipahu Direct
Specs
11 In Stock115V
LG Dual Inverter 6,000 BTU (LW6023IVSM)
6,000 BTU • Up to 220 sq. ft.

LG Dual Inverter 6,000 BTU (LW6023IVSM)

$560Waipahu Direct
-$45 Rebate
Specs
10 In Stock115V
LG Dual Inverter 10,000 BTU (LW1022IVSM)
10,000 BTU • Up to 330 sq. ft.

LG Dual Inverter 10,000 BTU (LW1022IVSM)

$650Waipahu Direct
-$45 Rebate
Specs
20 In Stock115V
LG Dual Inverter 12,000 BTU (LW1222IVSM)
12,000 BTU • Up to 380 sq. ft.

LG Dual Inverter 12,000 BTU (LW1222IVSM)

$745Waipahu 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)

Plantation Home AC Reviews

Real reviews from Oahu homeowners in classic single-wall homes

Explore All 142+ Reviews
BM

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
TB

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!”

Oahu Verified CustomerEst. 2005 • Oahu
RT

Ron T.

Verified
Ewa Beach•Yelp Verified
Window AC InstallationTech: Chris

“Very efficient and worked on a holiday (Veterans Day) to replace my large window AC. My AC also has WiFi so I can control it outside my home. Chris was very pro...”

Oahu Verified CustomerEst. 2005 • Oahu
AL

Adrienne L.

Verified
Kailua•Yelp Verified
Window AC Cleaning & ServiceTech: Chris

“We had gotten our window unit initially installed by Affordable Home AC a year ago. We noticed our unit started leaking onto the Lanai, and called them up to ta...”

Oahu Verified CustomerEst. 2005 • Oahu
SL

Samuel L.

Verified
Pearl City•Yelp Verified
Window AC Cleaning & ServiceTech: Brian

“My A/C was running sluggish and figured it needed to be cleaned (been 2 years since installed). Contacted Affordable Home AC and was referred to Chris at Window...”

Oahu Verified CustomerEst. 2005 • Oahu
MS

Mermaid S.

Verified
Mililani•Yelp Verified
Window AC InstallationTech: Brian

“The AC unit stopped working in my apartment so my landlord helped make arrangements to connect with Brian and Chris. They were very professional and had a new A...”

Oahu Verified CustomerEst. 2005 • Oahu
BH

B H.

Verified
Aiea•Yelp Verified
Window AC InstallationTech: Brian

“Excellent business to work with. Quick response to providing an estimate and recommendations. Amazingly, they arrived a little earlier than scheduled and comple...”

Oahu Verified CustomerEst. 2005 • Oahu
TB

Tim B.

Verified
Waipahu•Yelp Verified
LG Dual InverterTech: Brian

“I am giving Affordable Home Air Conditioning in Waipahu my highest recommendation to other Yelp users in the Honolulu area. Brian Borges and his team were quick...”

Oahu Verified CustomerEst. 2005 • Oahu