Johnstone Supply

2.6

About the business:

In El Cajon, we are Johnstone Supply—your reliable partner in HVAC services. We're more than just a heating equipment supplier or air conditioning system provider; we're your neighbors, committed to enhancing the comfort of your home.

For decades, our team has been dedicated to providing top-tier solutions for homeowners like you. Whether you need a new HVAC system or replacement parts, our expertise and vast selection ensure we meet your unique needs. We take pride in serving this community with integrity and precision, ensuring your home stays comfortably cool during summer and warm in winter.

At Johnstone Supply, we're not just selling equipment; we're delivering peace of mind and long-lasting solutions to make your life easier. Join us in El Cajon as we continue our mission to elevate home comfort together.

Heating Equipment Supplier

In El Cajon, we're your reliable Heating Equipment Supplier, offering a wide range of solutions for your home comfort needs. …
Book from $50
Air Conditioning System Supplier

In El Cajon, we're your reliable air conditioning system supplier, Johnstone Supply (HVAC Services). We understand the discomfort that a …
Book from $50

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Hours of operation

Mon – Fri
Sat – Sun

7:00 AM – 5:00 PM
Closed

Latest reviews

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F Flajjdhba
23 May 2026
1
A rude manager
ACS - American Comfort Services
23 May 2026
5
———-3/31/2026
I had an outstanding experience working with Jason and Paul today both provided top-notch service, were extremely knowledgeable, and made the entire process smooth and easy. You can tell they truly care about taking care of their customers and getting the job done right.

Dick does an excellent job managing the team, and it clearly shows in how professional and efficient everyone is. The level of organization and customer service here is hard to beat.

I’ll definitely continue doing business with Johnstone Supply for many years to come. Highly recommend!

—————3 YEARS AGO
I can't say enough about the exceptional service I receive every time I visit this HVAC supply house. The staff is not only friendly but also incredibly knowledgeable, making my shopping experience smooth and efficient. Their extensive inventory and organized layout simplify the process, and the team always goes the extra mile to ensure I find what I need. Quick transactions, valuable insights, and a consistently high level of service make this place a go-to for any HVAC contractor. I wholeheartedly give it five stars and highly recommend it to my colleagues in the industry!
Isaias Flores
23 May 2026
1
Poor service