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31 Years
experience
Emergency
services
Your Trusted HVAC Partner in Woodstock, IL
Since 1995, MG Mechanical Contracting has established itself as a trusted leader in HVAC solutions across Northern Illinois. Our approach centers on collaboration, working directly with clients to design, install, and test systems that meet their unique needs. With a team of certified technicians from Sheet Metal Workers Locals 265/73 and Pipe Fitters Local 597, we combine technical expertise with a commitment to craftsmanship. Our services span commercial, industrial, and residential sectors, addressing everything from emergency repairs to large-scale custom fabrication. We maintain full bonding and licensing, guaranteeing all work to ensure client confidence.

Through strategic partnerships with major brands like Heil, York, and Carrier, we deliver cutting-edge equipment paired with personalized service agreements. Our 25,000-square-foot facility enables precision sheet metal fabrication for specialized projects, while our 24/7 emergency response team ensures uninterrupted comfort. Recognized in The Business Journal's Top 10 HVAC providers, we prioritize energy efficiency and environmental responsibility in every solution. Customer satisfaction remains our ultimate measure of success, reflected in our track record of repeat clients and referrals.
Services
HVAC Installation Emergency Repairs Custom Sheet Metal Planned Maintenance Indoor Air Quality
Details
  • Year established: 1995
Highlights and features
  • We offer 24/7 emergency HVAC service with rapid response times
  • Our technicians are certified through Sheet Metal Workers and Pipe Fitters unions
  • Planned maintenance agreements lock in repair costs with 10% labor/material discounts
  • 25,000 sq ft fabrication facility handles custom metal projects of any scale
  • Recognized as Top 10 HVAC provider in Northern Illinois by The Business Journal
What people say
Best prices available Job done faster than promised Treats homes with care High-quality sheet metal work Prompt professional service
Services
HVAC Installation
We design and install complete heating, ventilation, and air conditioning systems for residential, commercial, and industrial properties. Our technicians implement energy-efficient solutions that reduce operating costs while maintaining optimal comfort levels. All installations follow strict quality control protocols to ensure compliance with local building codes and manufacturer specifications.
Emergency Repairs
Our certified technicians respond to HVAC emergencies at any hour, diagnosing and resolving issues with furnaces, air conditioners, and ventilation systems. We maintain a fleet of fully equipped service vehicles to address urgent repairs promptly while guaranteeing workmanship quality. Emergency service includes after-hours diagnostics and priority parts procurement.
Custom Sheet Metal
Precision sheet metal fabrication for HVAC components, including ductwork, exhaust systems, and custom enclosures. Our 25,000-square-foot facility utilizes computer-controlled plasma cutters to produce specialized parts to exact specifications. Services include welding, brazing, and fabrication of lab hoods, boiler stacks, and industrial ventilation systems.
Planned Maintenance
Preventive maintenance programs that extend equipment lifespan and prevent unexpected breakdowns. Our agreements include seasonal system inspections, filter replacements, and performance optimizations. Commercial clients receive tailored schedules with cost-saving benefits including discounted labor rates and priority service dispatch.
Indoor Air Quality
Comprehensive indoor air quality solutions featuring humidifiers, air purifiers, and ventilation systems. We install EPA-recommended air exchange systems that reduce allergens and contaminants while maintaining energy efficiency. Products include Aprilaire humidifiers, iWave-R ionization purifiers, and Honeywell ventilation systems for residential and commercial applications.
People
Michael G. Johnson
President
With over 25 years in HVAC contracting, Michael leads strategic operations and client relations. He established MG Mechanical's reputation for quality through rigorous technician training programs and investment in advanced fabrication equipment.
David Rodriguez
Project Manager
David oversees large-scale commercial installations, coordinating between design teams and field technicians. His expertise in CAD system design ensures projects meet efficiency standards while staying within budget parameters for institutional clients.
Sarah Thompson
Service Department Head
Sarah manages the 24/7 emergency response team, implementing protocols that maintain average service response times under two hours. She developed the company's preventive maintenance framework adopted by major hospital systems.
Questions
What HVAC services do you offer for residential customers?
We provide complete heating and cooling system installation, repair, and maintenance for homes, including emergency service, indoor air quality solutions, and energy-efficient upgrades.
Are your technicians available for emergency repairs?
Yes, our certified technicians respond to HVAC emergencies 24 hours a day, 7 days a week with guaranteed workmanship on all repair services.
Do you serve commercial clients outside Chicago?
We serve all Northern Illinois locations, including industrial parks and commercial centers in the Chicagoland area with customized HVAC solutions.
Can you handle specialized sheet metal fabrication?
Our 25,000 sq ft facility produces custom HVAC components, including exhaust systems, ductwork, and industrial ventilation solutions using computer-controlled plasma cutting technology.
What maintenance plans are available for homeowners?
Our Planned Maintenance Agreements include seasonal system inspections, filter replacements, and 10% discounts on labor and parts, with priority scheduling for emergency service.
Are your HVAC installations energy efficient?
We prioritize energy-efficient systems that meet current environmental standards, including EPA-recommended indoor air quality products and smart thermostat integration for optimal efficiency.