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

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Local Reviews
for belvidere, il

Rated 4.9 out of 5 stars based on 116 customer reviews

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Good service

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Water heater replacement

Water heater works great, but we still have air in our water lines.

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Great service

He new what he was doing, very polite and answered all are questions also easy to work with. Thanks Lee & Barb.

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Service Technician was very thorough!

GREAT Service

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Great service man Very hwlpful

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Great workers,awesome job

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Great service,

We moved into a new house and I wanted my dryer vent cleaned because I know these can be a serious fire risk. Service team called to let me know the could be out earlier than my appointment scheduled time and did great work and I was very happy with the results.

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Furnace and A/C

I have had 4 Black Diamond workers in my home over the past 2 years or so, and the experience has been fantastic. Just recently I had Nick Caruso, who is a comfort consultant, to give me an estimate on a new furnace and a.c.. The first thing Nick noticed when he entered my utility room where the furnace and water heater is, is that the water heater had a bad pressure release valve. The unit was leaking and Nick also stated that the pressure tank was installed incorrectly, probably causing the pressure relief valve to go bad. This was my second water heater in 16 years and that pressure tank was installed incorrectly for as long as we have owned our home. In both cases, the water heater leaked in the same manner. Nick came out for the furnace and a.c. quote but the water heater seemed to weigh on his mind through the process. He made a phone call and told me he could have a new water heater in that same day. I thought that was amazing, no waiting for a unit to come in, wow!!! I had a new commercial grade water heater installed that night with new lines and a new pressure tank. I will comment on that process shortly, but back to Nick Caruso. I couldn't have picked a more knowledgeable professional, friendly and caring person to come into my home and offer advice on our new furnace and a.c. Plus Nick himself was an HVAC installer himself for years before accepting this position with Black Diamond. That was huge piece of info for me, as I like people who have put their time in on the job as oppose to just reading or learning about a trade through a class. I think hands on experience is crucial into making a great representative. The wife and I purchased a new furnace and a.c. after listening to Nick and taking in all his knowledge. The furnace and a.c. was installed a week later. They sent two men out to put in my furnace and a.c. One guy worked the furnace inside while the other worked the a.c. outside. They were both typical Black Diamond associates. Extremely knowledgeable in their trade, friendly, respectful and just absolutely excellent people. I never ever mentioned once to any of them not to wear shoes on my carpet and whenever they had to come upstairs on my carpet they both had shoe coverings on to protect my flooring. Furthermore, they lay down tarps and drop cloths in the area they will be traveling and working in to protect your flooring. Luv this about Black Diamond, they always seem to care about the homeowner!!! Now back to the water heater. The same night Nick discovered the bad pressure relief on the existing water heater, Black Diamond had a plumbing technician come out and replace the old water heater with a new commercial grade 40 gal gas water heater and pressure tank. The plumbing technicians name was Juan, I never ask a last name because it is really not my place. As usual, another fantastic experience with a Black Diamond technician. Juan was awesome!! Just flat out awesome!! I kept asking him if he needed any help getting out the old unit and bringing in the new unit because of the tight space it was in. Juan always graciously declined, and he just man handled these water heaters like they were nothing. Couldn't have met a nicer and more knowledgeable plumber. I never heard a negative word come from this guy, he just worked until the job was complete! Afterwards, Juan gave me some great advice and even went so far as to run me through the process of draining or flushing the new unit so I can get maximum life out of it. This was because I was very honest and upfront with Juan when I told him I never drained the water heaters ever. He gave me 2 extremely good reasons to do so that even regular person can wrap their head around. Oh, and after the installation, Juan told me that the old pressure tank was filled with black water. Those tanks should only have basically air in them, so that tank was probably bad when I had my 2nd tank put in 6 years ago by Sears. Thanks Sears, lol. Sometimes you get what you pay for!! Thanks Black Diamond, for all the professionalism, knowledge, friendly and caring technicians you've sent my way over the years!! I won't have any other company out to my house unless Black Diamond doesn't work whatever area I need. If Black Diamond services it, they are my company of choice and for life!! Hands down!! There is a reason why they are rated number one in all areas they service!!!! Keep up the great work!! Sincerely, Bob and his family.

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Good job

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Job Locations
for belvidere, il

Daniel B.

Daniel B. Job Checkin

Outlet replacement


Mike C.

Mike C. Job Checkin

Service on Aprilaire humidifier


Keith H.

Keith H. Job Checkin

Heat not working properly


Keith H.

Keith H. Job Checkin

Furnace not working properly


Luis E.

Luis E. Job Checkin

Toilet repair


Raudel S.

Raudel S. Job Checkin

Bathroom sink is leaking


Raudel S.

Raudel S. Job Checkin

Per customer needs customer supplied faucet install


Dave K.

Dave K. Job Checkin

Pump not working.


Tim M.

Tim M. Job Checkin

Furnace estimate


Jack L.

Jack L. Job Checkin

Plumbing issues


Jack L.

Jack L. Job Checkin

Plumbing issues


Jack L.

Jack L. Job Checkin

Plumbing issues


Luis E.

Luis E. Job Checkin

Water leak


Daniel B.

Daniel B. Job Checkin

Lighting strike, electrician Belvidere


Tim M.

Tim M. Job Checkin

A/C estimate