Testing Service Corporation specializes in a broad range of professional sub-surface study and field testing/observation services - at reasonable cost. Since 1954, countless architects, engineers and developers throughout the midwest have relied on our expertise for private sector residential developments, regional shopping centers, distribution and rail/cargo off-loading facilities, office buildings and professional sports complexes, along with public infrastructure projects such as airports, expressways, bridges and tunnels.

Precision Today Plumbing Heating Cooling Electrical proudly serves Carol Stream with expert residential plumbing, HVAC, and electrical services. From sump pumps and water heater repair to drain cleaning and panel upgrades, our licensed team gets the job done with speed and precision. We're available 24/7 for emergencies and offer clear communication, upfront pricing, and guaranteed satisfaction. Trusted by homeowners in Carol Stream, Bloomingdale, Glendale Heights, and surrounding areas since 1992.

AWE Air Water Energy provides trusted residential HVAC, plumbing, and electrical services to homeowners in Carol Stream and the surrounding DuPage County area. From energy-efficient air conditioning and furnace installation to tankless water heaters, leak detection, and panel upgrades, our team delivers smart solutions for total home comfort. Whether you're dealing with an urgent plumbing issue or looking to improve indoor air quality or electrical safety, AWE offers same-day service backed by decades of local experience. We specialize in whole-home systems that keep you comfortable and efficient year-round. Proudly serving Carol Stream, Wheaton, Bloomingdale, and nearby communities with integrity and care.

Gray's Mechanical LLC - Carol Stream is a trusted HVAC company proudly serving Carol Stream, Wheaton, Bloomingdale, Glendale Heights, and the surrounding suburbs. Our licensed and insured technicians provide expert air conditioning repair, furnace installation, HVAC maintenance, and indoor air quality solutions. Whether you need same-day AC repair, a seasonal furnace tune-up, or a complete system replacement, we deliver fast, reliable service backed by honest pricing and 5-star customer care. Keep your home comfortable year-round - call Gray's Mechanical today or schedule online for professional HVAC service you can count on.

​At Carol Stream Solar Installation, we are committed to providing quality service from start to finish when it comes to powering your home with renewable energy solutions. From solar panel installation through repair and removal/reinstallation services – our expert technicians know exactly what they are doing when it comes to ensuring optimal performance from your solar system year after year! So if you’re ready for the switch, contact us today for more information about our full range of services!