Johnstone Supply
Market rank
#22 / 22
Johnstone Supply serves Honolulu and surrounding areas as your trusted HVAC partner with unmatched expertise in air conditioning, heating, ventilation, and maintenance services. Located in the heart of Hawaii's bustling capital, we bring decades of industry knowledge to homeowners and businesses throughout Honolulu neighborhoods including Waikiki, Kahala, Manoa, Kailua, and Kaneohe. Whether you need emergency AC repair during sweltering summer months, seasonal maintenance to keep your system running efficiently, or complete HVAC installation in your Ala Moana or Downtown Honolulu property, our certified technicians deliver reliable solutions. Serving areas near Diamond Head, the Honolulu International Airport vicinity, and Pearl Harbor neighborhoods, Johnstone Supply combines local experience with national HVAC standards. Trust our team to handle your climate control needs with professionalism and precision, ensuring your home or business stays comfortable year-round in Hawaii's tropical climate.
Health scoreMay 9, 2026
54
out of 100
#22
Market rank
4.1
Avg rating
7
Total reviews
No public response signal
Response rate
Unknown
Years active
54
Health score
Health score · 54 / 100
Six signals, weighted continuously.
Operator computes a Health score continuously. It is the one number that tells you if this shop is winning, losing, or steady. Here is how Johnstone Supply broke down on May 9, 2026.
Score trend
30d90d1y
Johnstone Supply
90 days trailing
Market position
#22 of 22 HVAC in Honolulu.
Operator ranks every hvac in Honolulu continuously using reviews, response rate, and local market share.
#22
of 22 HVAC businesses
in Honolulu
in Honolulu
Leaderboard refreshes continuously. Your rank updates the moment signal lands.
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Recent activity
What changed this month.
No notable shifts in the past 30 days. Operator will flag movement the moment it happens.
In person
The shop, the team, the work.
The numbers tell one story. The photos tell another. Images are indexed from Google Business Profile, the public website, and connected social profiles.
Reviews · 7 total
What customers say.
Reviews pulled continuously from Google, Yelp, and Meta. Aggregate weighted by recency and source authority.
4.1★★★★☆7 reviews
5 ★
1
4 ★
3
3 ★
1
2 ★
1
1 ★
0
Review themes refresh continuously. Check back once Operator has synthesized enough comments from Johnstone Supply’s reviews.
About & contact
Where to find them.
About
Johnstone Supply is Honolulu's go-to HVAC specialist offering AC repair, heating services, and energy-efficient system installations. With EPA and NATE certifications, they handle everything from ductless mini-splits to commercial HVAC, backed by a solid 4.1/5 rating and emergency service availability.
Phone
Hours
Monday7:00 AM - 5:00 PM
Tuesday7:00 AM - 5:00 PM
Wednesday7:00 AM - 5:00 PM
Thursday7:00 AM - 5:00 PM
Friday7:00 AM - 5:00 PM
Saturday (today)8:00 AM - 2:00 PM
Sunday
Competitors · top 5
Side by side with the neighborhood.
The hvac shops Johnstone Supplycompetes with most often, ranked by Operator’s health score. Tap any row for that shop’s full page.
FAQ
Quick answers.
The questions people ask before they call.
Contact Johnstone Supply
Call (808) 842-6000 for service.
Hours for Johnstone Supply
Hours are listed on this page under About and contact. Operator refreshes them continuously from public sources.
Services offered by Johnstone Supply
Johnstone Supply offers AC Repair, Heating Repair, System Installation, Preventive Maintenance. Operator refreshes service lists continuously from public sources.
Licensing and insurance
License and insurance details have not been verified with Johnstone Supply yet. Find the listing to add them.
Estimates and availability
Estimate and availability details are refreshing. Call ahead for the fastest confirmation.
Health score formula
Six weighted components: Reviews and rating (25%), Response rate (15%), Market rank (20%), Financial health (20%), Jobs flow (10%), and Operator activity (10%). Recomputed continuously using data from Google, Yelp, Meta, and direct integrations.
Local rank in Honolulu
Operator ranks every hvac in Honolulu continuously. Johnstone Supply currently ranks #22 with a 4.1 rating across 7 reviews. Rankings refresh continuously from Google, Yelp, and Meta.
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