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Monday 7am - 4pm Tuesday 7am - 4pm Wednesday 7am - 4pm Thursday 7am - 4pm Friday 7am - 2:30pm

Hartwig Mechanical

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Harvard, IL
Hartwig Mechanical

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Hartwig Mechanical is a commercial contracting firm specializing in plumbing, heating, air cond Hartwig Mechanical, Inc.

is consistently recognized as one of the top commercial plumbing, engineering, mechanical, facility maintenance, and HVAC contractors in Illinois and Wisconsin

11/05/2026

💡 Lower energy costs. Unlock rebates.

Your next facility improvement could come with savings beyond the utility bill!

Hartwig Mechanical can help commercial customers explore opportunities through the Nicor Gas Energy Efficiency Program, including:

✅ No-cost energy assessments for eligible facilities
✅ Rebates for qualifying boiler tune-ups, steam trap repairs and pipe insulation
✅ Incentives for eligible heating equipment and water heater upgrades
✅ Custom incentives for larger natural gas-saving projects

From identifying opportunities to equipment installation and rebate paperwork, our team can help you take the next step.

Planning an upgrade? Contact us early—custom projects require program pre-approval before equipment is ordered or work begins.

📞 815-943-4430 ask for service
📧 [email protected]
🌐 www.hartwigmechanical.com

Harvard • Rockford • Mokena | One Team

Eligibility, funding and program requirements apply. Incentives are subject to change.

11/01/2026

One of our team members son dressed as his favorite person for 🎃 Halloween

10/31/2026

Happy Halloween

10/23/2026

From everyday repairs to your next construction project, Hartwig Mechanical is ready to help.

We provide commercial and industrial HVAC, plumbing, sheet metal, and mechanical services—from preventive maintenance and equipment replacement to custom fabrication, piping, and new installations.

With locations in Harvard, Rockford, and Mokena, we bring the experience and teamwork to keep your facility running and your projects moving.

Have a repair, maintenance need, or upcoming project? Let’s talk.

📞 815-943-4430
🌐 www.hartwigmechanical.com

One Team.

10/18/2026

Always looking for the right people to join our team.

Currently looking for a team leader for our South Service Division based in Mokena.

Email [email protected] if pursuing a career with a great company is for you.

ONE TEAM. FOCUSED ON YOU.

At Hartwig Mechanical, our One Team goal starts with what matters most—our customers.

Across Harvard, Rockford, and Mokena, we bring together Plumbing, Mechanical, HVAC Service, Special Projects, and Building Controls to support your facility. Behind every project and service call are field professionals, warehouse teams, and office staff working toward the same goal: delivering quality work and an experience you can count on.

For our customers, that means shared expertise, clear communication, and coordinated support—from routine maintenance and unexpected repairs to system upgrades and new installations.

We’re investing in our people, strengthening collaboration, and building lasting partnerships to keep your facility running and your business moving forward.

Three locations. One team. Focused on you.

Let’s talk about how Hartwig can support your fac

10/16/2026

🔧 Residential. Commercial. Industrial. One trusted plumbing partner.

From a leaking faucet at home to plumbing problems at your business or industrial facility, Hartwig Mechanical has the experience to keep your property flowing.

Our plumbing services include:

✅ Plumbing repairs and replacements
✅ Drain cleaning and sewer camera inspections
✅ Backflow testing and certification
✅ Water heater service and replacement

Small repairs or larger plumbing needs—our team is ready to provide practical solutions and dependable service.

📍 Harvard • Rockford • Mokena
📞 815-943-4430
🌐 www.hartwigmechanical.com

10/09/2026

2026 Hartwig Mechanical company cookout.
Thank you to our team for everything you do.

10/03/2026

09/28/2026

Flawless ex*****on from start to finish. This weekends helicopter pick at Gotion battery plant was a true team effort—great planning, communication, coordination, and ex*****on by everyone involved. Proud of the entire crew for getting the job done safely and efficiently.” 🚁💪

ONE TEAM. FOCUSED ON YOU.At Hartwig Mechanical, our One Team goal starts with what matters most—our customers.Across Har...

09/27/2026

Address

20800 East Brink Street
Harvard, IL
60033

Opening Hours

Monday	7am - 4pm
Tuesday	7am - 4pm
Wednesday	7am - 4pm
Thursday	7am - 4pm
Friday	7am - 2:30pm

Telephone

+18159434430

Website

https://hartwigmechanical.com/

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