Johnstone Supply

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About Johnstone Supply
Johnstone Supply operates as a heating equipment supplier in Cranbury, New Jersey, holding a perfect 5.0-star rating drawn from 45 customer reviews. This location serves HVAC professionals and contractors throughout Central New Jersey, with one reviewer specifically noting its convenient proximity to exit 8A off I-95. The supply house functions as a contractor-only distribution center, providing equipment and parts to licensed tradespeople rather than performing residential installations directly for homeowners.
The Cranbury branch distinguishes itself through extensive educational programming, including specialized hydronics training that one reviewer praised as a valuable professional development opportunity. Their product inventory encompasses major HVAC categories: residential split systems, mini-split configurations, single packaged units, variable capacity systems, air handlers, evaporator coils, gas furnaces, and oil furnaces. The store maintains a comprehensive cross-reference search system and warranty request processing, tools designed to streamline contractor workflows.
Customer feedback consistently highlights three team members by name. Reviewers describe Christos as super helpful, while Victor and Adam receive repeated commendations for getting contractors what they need and providing knowledgeable assistance across diverse technical scenarios. One reviewer specifically credits these individuals with making the location their favorite among New Jersey supply houses, praising their availability and thorough responses to technical questions.
What Customers Say
Eight of eight reviewers award 5 stars, with three staff members named repeatedly. Victor, Adam, and Christos collectively receive six mentions across reviews for helpfulness, product knowledge, and problem-solving. Sentiment themes cluster around quick service, consistent availability, and professional expertise.
Working Hours
| SundayToday | Closed |
| Monday | 7 AM–5 PM |
| Tuesday | 7 AM–5 PM |
| Wednesday | 7 AM–5 PM |
| Thursday | 7 AM–5 PM |
| Friday | 7 AM–5 PM |
| Saturday | Closed |
Services
HVAC Equipment Distribution
Supplies contractors with heating and cooling equipment including split systems, packaged units, and furnaces.
Mini-Split Systems
Offers single-zone and multi-zone mini-split configurations for residential and light commercial applications.
Variable Capacity Systems
Provides advanced variable-speed HVAC systems for enhanced efficiency and comfort control.
Residential Unitary Equipment
Stocks complete residential HVAC systems including air handlers and evaporator coils.
Furnace Supply
Carries both gas and oil furnace options for residential replacement and new construction projects.
Cross-Reference Search
Digital tool helping contractors identify compatible replacement parts across manufacturer product lines.
Warranty Processing
Handles manufacturer warranty requests for equipment purchased through the contractor account.