Diagnostic Heating & Cooling LLC

01/29/2026

TYPE 'HVAC' for more details to get registered

02/22/2025

We've just reached 200 followers! Thank you for continuing support. We could never have made it without each and every one of you. Let's keep going and growing!

02/21/2025

The third-generation, family-owned business has been serving the St. Louis area since the 70s.

02/17/2025

Merriam-Webster's definition: work done by several associates with each doing a part but all subordinating personal prominence to the efficiency of the whole.

Our Definition: Everyone coming together to achieve a common goal. In other words, Teamwork makes the Dream work.

What does teamwork mean to you?

04/03/2024

Did you know that regular HVAC maintenance can reduce your energy bill by up to 20%? Let us help you save money and stay comfortable all year round and join our "Diagnostic Cares Program"

01/11/2024

We're hiring! Interviews are Thursdays 11-4p CST

Diagnostic Heating & Cooling is hiring! We are doing open interviews every Thursday from 11:00 am- 4:00 pm. All experience levels welcomed. Please upload your resume using the following link after you schedule your interview:Resume: https://www.diagnosticheatingandcooling.com/now-hiringSchedule is

09/30/2023

Summer may feel like it's coming to an end but it's still hot in the house. We are running end of summer saving to service your air conditioning units before frost comes. Give a call or check us out on Facebook or Instagram for booking. LINK IS IN BIO!

09/30/2023

Are you ready for the weather change? Is your heating unit up to par? If you are not sure, give Diagnostic Heating and Cooling a call to service your system before the winter comes!

Link in Bio!

Veteran Family-owned and operated HVAC and electrical contracting business serving residential and commercial clients since 1972.

12/01/2021

A beautiful day in the field!