Sep 8, 2026
How Much Does HVAC Replacement Cost? (2026 Cost Guide)
Reading Time About 16 Min
Open 24/7
D
Rooftop HVAC Units Services
Diamond Mechanical Contractors
VerifiedEstablished · 22 yrs
4.6(23 reviews)•Commercial•Serving Olathe, KS
EPAFully LicensedLicensed, Bonded And InsuredNATENCI
A commercial HVAC and plumbing company specializing in installation, repair, maintenance, and replacement services for businesses.
Diamond Mechanical Contractors is an HVAC contractor based in Olathe, KS. Services listed include rooftop units (rtu), HVAC and repair. 22 years in business and emergency service available.
22
Years in Business
Yes
Emergency Service
Olathe, KS
Service Area
Services Offered
Customer Sentiment Summary
Strengths
- Showing up when promised is this company's strongest trait — 6 of the 18 reviews we read specifically mention early or on-time arrivals.
- Conduct on site is the headline: 8 of 18 reviewers describe the crew as professional, courteous and respectful of their home.
- Technical depth stands out: 5 reviewers credit the crew with a correct diagnosis and a clean repair.
- 2 reviewers felt the final bill was reasonable for the work done.
Areas to Watch
- Communication is mostly positive but not unanimous: 2 of the 18 reviews analysed raised it, and a minority had problems.
- Turnaround is mostly positive but not unanimous: 3 of the 18 reviews analysed raised it, and a minority had problems.
Reviews from Best HVAC visitors
No Best HVAC reviews yet
Been a customer of Diamond Mechanical Contractors? Be the first to rate them.
Get Your HVAC Business Listed
Want to put your heating and cooling company in front of local homeowners and businesses actively searching for reliable HVAC services? Claim your spot and connect with high-intent customers in your area.
Get Featured
Blog / News
View all articles HVAC Tips, Guides & Industry News
Sep 7, 2026
Why Does My Thermostat Screen Go Blank?
Reading Time About 6 Min
Sep 6, 2026
How to Clean AC Condenser Coils Safely
Reading Time About 7 Min
Sep 3, 2026
AC Blowing Warm Air? Common Causes and Fixes
Reading Time About 6 Min
FAQ
Contact Our TeamFrequently Asked Questions
Have another question? Our team is here to help.
Diamond Mechanical Contractors lists rooftop units (rtu), HVAC and repair. Contact them to confirm they handle your specific job.
Diamond Mechanical Contractors is based in Olathe, KS.
Yes, Diamond Mechanical Contractors lists emergency service. Call them directly for urgent heating or cooling repairs.
Use the call button, website link or contact details on this page to reach the company directly.
Get in touch and we will keep your listing details accurate and add photos.