Black Diamond Plumbing & Mechanical Inc.

t c 

on Google

a day ago

Our service tech Mike was very thorough. He explained all of our options and got us up and running. (HVAC - AC) 

Kathryn Zeka 

on Google

a day ago

The technician, John, was professional and polite. The work was completed in great time. I highly recommend Black Diamond Company. 

Magdalena F 

on Google

2 days ago

13Jul2026 Dan O Came out and maintenance and cleaned the Amanda HVAC & outside AC system. Additionally he changed battery in the AC unit. 13Jul2025 HvaC Technician Jack added the system running in five minutes. Was able to get the parts under warranty and talked for close to an hour. Explaining how the system works and having the membership saved a lot of money. 8 years living here. I can finally say that we found a trusted company in McHenry. I highly recommend Jack if you have technical issues for HVAC Ejector pump: Addres... read more

Hilary Hofstetter 

on Google

2 days ago

We were very happy with the service provided! Very knowledgeable, professional and kind. 

Mike T 

on Google

2 days ago

We had Elvis out to the house to give us a quote for a new heater and AC unit, and he was absolutely fantastic. He took the time to explain everything clearly and was incredibly friendly throughout the visit. What I appreciated most was his ability to recommend a truly great solution tailored to our unique situation. I highly recommend Elvis and the team at Black Diamond!