For 70+ years, GRP|WEGMAN has engineered comfort for hospitals, schools, breweries, industrial sites, and municipal buildings across the US. Now we're bringing that same expertise to your home in Metro East Illinois.
Need AC repair near you? Same day service, no hot water, or a furnace that won't start? Our licensed local technicians handle it all, from emergency plumbing and drain cleaning to water heater repair and replacement, AC and furnace repair, and full installs, right here in Madison, St. Clair, Calhoun, Jersey, and Macoupin counties.
24/7 service. Upfront pricing. The same trusted crew your neighbors already know from decades of commercial work, now available for residential calls.
GRP|WEGMAN is the name behind our community's most critical heating, cooling, and plumbing:
Now we're opening our doors to homeowners — bringing the same union-trained technicians, the same engineering standards, and the same uncompromising reliability to the place that matters most: your home.
Fill out the form below and one of our experts will be in contact with you very soon!
CHOOSE GRP|WEGMAN FOR YOUR HOME SERVICES
Service Area
Our initial Illinois service area includes:
Bethalto | Alton | Edwardsville | Glen Carbon | Collinsville | Troy | Highland | Godfrey | Jerseyville | and surrounding Metro East areas.
We plan to expand to the St. Louis Metro area soon.
Don't search the web for the best service. Save your trusted GRP|WEGMAN Home HVAC & Plumbing professionals in your contacts now: 618-258-9000. We're ready when you need us.
Save your trusted GRP|WEGMAN Home HVAC & Plumbing professionals in your phone: 618-258-9000. We're ready when you need us.
Next Door ExpertS. Flat-rate Fairness. Service you can Trust.
Home HVAC and Plumbing service launches Spring 2026! Add your name to the roster to receive additional perks!
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1
Flat-Rate Honest Pricing
No hourly guessing games, no surprise charges at the end of the job. Before we touch a thing, you'll know exactly what it costs — and that number won't change. We know trust starts with transparency.
2
NEIGHBORLY SERVICE
We're not a national call center dispatching strangers to your door. We're your neighbors — local, accountable, and genuinely invested in the communities we serve. You'll recognize our faces, and we'll remember yours.
3
Proud, Affordable Union Labor
Every technician who walks through your door is union-trained, highly skilled, and held to the highest professional standards in the trade. We're proud to support good wages, safe working conditions, and the kind of craftsmanship that only comes from properly trained professionals. When you hire GRP|WEGMAN, you're investing in your home and your community.
4
Preventative Maintenance
The most expensive repair is always the one that could have been avoided. Our preventative maintenance programs are designed to catch small issues before they become major ones, saving you money and stress in the long run.
5
24/7 Response Times
Home emergencies don't wait for business hours, and neither do we. Whether it's a Friday night or a holiday weekend, a real GRP|WEGMAN technician is ready to respond. When something goes wrong, you won't be left waiting.
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