1400 Miller Parkway
McHenry, IL 60050
866-369-3057

Our Top Cities


Local Reviews

Rated 4.9 out of 5 stars based on 5266 customer reviews

Great service as always!!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great service

David was awesome. Great service and great work

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great service

Dave from Black Diamond was friendly and efficient. He did a great job, cleaned everything up and was very friendly. Highly recommend!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Extremely knowledgeable and competent. Excellent work.

I had excellent service from Luis. He was on time, even called to see if he could come a few minutes early, thoroughly examined the problem and what was causing it, explained exactly how he would fix it, and wrote down exact prices for me to consider. His work was done perfectly, he was very considerate in his cleaning up, and was in general a very pleasant and personable person to have in my home. I would definitely want him to come back again for any of my plumbing repairs. I was extremely well satisfied. 5 stars!!!

  • Overall Experience
  • Quality
  • Price
  • Convenience

great

  • Overall Experience
  • Quality
  • Price
  • Convenience

  • Overall Experience
  • Quality
  • Price
  • Convenience

A safer house

Thanks to teamwork among the different business segments of Black Diamond, our house is safer. We didn't know that the flexible aluminum dryer vent was clogged with lint - a major cause of house fires. That was found by a Black Diamond electrician who was installing a circuit breaker box (to replace an old fuse box - another source of house fires). We were called by Black Diamond to arrange for an HVAC specialist to come out the next day and install new, modern solid ventilation from the dryer to the outside. Money well spent. We can always count on Black Diamond!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Excellent service

We were able to get same day service

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great Service by Friendly, Knowledgeable Company & Technician

Setting up an appt. for the check/clean of our furnace was easy w/ a minimal, amount of wait time for the appt.to occur. Keo, the Black Diamond technician, arrived promptly, was smiling & friendly & displayed his experience with ease. Afterward, he filled me in on his findings, brought me up to date on the furnace's condition and left the area he worked in clean and free of work materials! I highly recommend this company as well as their technician, Keo! Job well done!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great service , Doug did a great job vere happy!

Great service, Doug did a great job!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Job Locations

Raudel S.

Raudel S. Job Checkin

Bad smell coming from sink


Jack L.

Jack L. Job Checkin

Water heater


Ryan M.

Ryan M. Job Checkin

Inside excavation for a sewer repair


Raudel S.

Raudel S. Job Checkin

Pipe burst above water heater


Gerad A.

Gerad A. Job Checkin

Please leave a Google or yelp review for your electrical services.


Dave K.

Dave K. Job Checkin

Replacing kitchen sink faucet


Raudel S.

Raudel S. Job Checkin

Re inspect the drain line


Mike C.

Mike C. Job Checkin

Service in carrier furnace


Dave K.

Dave K. Job Checkin

Kitchen faucet replacement.


Jack L.

Jack L. Job Checkin

Plumbing issues


Keith H.

Keith H. Job Checkin

Furnace not working


Luis E.

Luis E. Job Checkin

Leaking sink


Jack L.

Jack L. Job Checkin

Valve issues


Keith H.

Keith H. Job Checkin

Humidifier not working


Raudel S.

Raudel S. Job Checkin

Right side toilet is clogged