(866) 350-4793
Available 24 Hours(866) 350-4793 Serving Chicagoland & More
Call Today(866) 350-4793 Serving Chicagoland & More
Basic Program Benefits
  • 24-Hour-a-Day Availability
  • Flat-Rate Pricing Structure
  • Waived Holiday/After-Hours Fees
  • Priority Service Scheduling
  • Payment Options Tailored to Your Budget
  • Customized to Your Home and Your Specific Needs
  • Peace of Mind
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Illinois’ Leading Heating, Air Conditioning,
Electrical & Plumbing Contractor

Reliable Service in McHenry, Crystal Lake,
Cary, Lake in the Hills & Beyond

Black Diamond Plumbing & Mechanical is a reliable heating, air conditioning, plumbing, and electrical company located in McHenry, IL. Serving the Chicago suburbs since 1999, our family-owned and operated company is friendly, reliable, and affordable to bring your home or business total comfort. Along with 24/7 heating and air conditioning repair, we also fix plumbing, electrical and sewer problems 24 hours a day, 365 days a year.

When you schedule service with us, you are not only getting professionals with years of experience, you are also getting fast and friendly service. What are you waiting for? If your home or business is in the Chicagoland area, call Black Diamond!

To schedule an appointment for HVAC services, simply contact us online or give us a call. Our phones are always on and our team is always ready to bring you the services you need—no matter the time of the day.

We proudly serve homes and businesses in:

  • Crystal Lake
  • Elgin
  • Machesney Park
  • Spring Grove
  • Woodstock
  • Algonquin
  • Volo
  • Cary
  • Lake in the Hills
  • Huntly
  • Gilberts
  • And More!
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Financing Options Available
On All of Our Services with Credit Approval
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Why Black Diamond?

24/7 Emergency HVAC, Plumbing & Electrical Repair

Unfortunately, breakdowns happen—and sometimes at the most inconvenient time! When you need to schedule an furnace or HVAC repair—and fast—look no further than Black Diamond Plumbing & Mechanical. Our technicians and plumbers offer 24/7 emergency repair service to get your home or office back on track. Whether it’s a weekend, holiday, or at 2:00 am, our friendly technicians can be there when you need service most.

HVAC, Plumbing & Electrical Services in the McHenry Area

As a full-service home service company, we have your needs covered. During the summer, count on us for reliable air conditioning services while in the winter count on heating and furnace services. When you need reliable HVAC, plumbing, and electrical services in the suburbs of McHenry, count on Black Diamond Plumbing & Mechanical. Check out some of our expertise below!


When you need to schedule a repair, count on Black Diamond Plumbing & Mechanical. Our family owned and operated company can repair your plumbing, electrical, or HVAC system in no time. Call us if you need a professional to repair your:

  • Air conditioner
  • Furnace
  • Toilet
  • Sewer
  • Gas lines
  • Circuit panels
  • Air ducts and dryer vents
  • And more!


Maintenance is important to ensure your systems are functioning properly and safely. With annual maintenance on your heating system, air conditioning, plumbing, and electrical fixtures, you can ensure everything is working efficiently—which will allow your units to work longer with fewer breakdown and costly issues.

We offer maintenance plans to ensure your units are getting the best possible service all year long. Learn more about our Crystal Club memberships to benefit from maintenance, repair discounts, and more!


If you are looking to install a furnace, heat pump, air conditioner, toilet, sink, or electrical fixture, Black Diamond Plumbing & Mechanical has you covered. Our technicians are experts when it comes to installing new units in homes and businesses. We ensure you are getting the correct sized HVAC unit, water tanks, circuits, and more so your units last longer and work efficiently.

To get a quote on an installation, give us a call.


Unfortunately, HVAC systems, plumbing, and electrical fixtures can’t last forever. When you need to schedule a replacement, count on the experts at Black Diamond to replace your:

  • Furnace
  • Heat pump
  • Air conditioner
  • Toilet
  • Sewer pipes
  • Water tank
  • Electrical circuits
  • And more!

HVAC Products

Did you know that HVAC systems typically last about ten years? If your furnace is on its last season or you simply want to replace it to increase efficiency, count on our team at Black Diamond. We specialize in high-efficiency HVAC systems designed to increase your indoor comfort and save you money on utility bills. And whether we’re replacing a leaky faucet or installing a state-of-the-art heat pump, we always offer the most reliable and trusted brand-name products on the market.

  • Amana
  • Aprilaire
  • Kohler
  • Moen
  • Honeywell
  • Leviton
  • Generac
  • Square D by Schneider Electric
  • Intermatic

About our McHenry HVAC, Plumbing & Electrical Company

Black Diamond Plumbing & Electrical is a full HVAC, plumbing, and electrical company that serves homes throughout McHenry, Cook, Kane, DuPage, and Lake Counties.  We believe that our success is based on three simple principles:

  • We always answer the phone – Day or night, 365 days a year, your call will always be answered by a Black Diamond employee.
  • We do what we say we are going to do– Our professional, prompt technicians will arrive when we promise. With our flat-rate pricing, you always know the price before we do the work.  No hidden charges, no extra fees.
  • We surround ourselves with the best people – We hire professional employees that are willing to help our customers no matter what. With their “whatever it takes” attitude you can rest assured that we’ve got you covered.

When you need professional HVAC services on the North Shore, count on the experts at Black Diamond. Give us a call or contact us online to schedule service.

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The Black Diamond Advantage:
We Offer Financing