Business Details
26 Years
experience
Emergency
services
Trusted HVAC Services in Bolingbrook, IL
Founded in 2000 by Larry Greenwich, DuAll Heating & Cooling has established itself as a trusted family-owned HVAC provider in Bolingbrook, Illinois. With over two decades of experience, our team of NATE-certified technicians delivers residential and light commercial heating, cooling, and indoor air quality solutions. We prioritize customer satisfaction through transparent communication, 24/7 emergency services, and financing options for system upgrades. Our commitment to excellence is reflected in our partnerships with industry leaders like NATE and Angie's List, as well as our recognition as a Bolingbrook Chamber of Commerce award winner.We serve Southwest Suburban communities including Naperville, Plainfield, and Romeoville, offering installation, repair, and maintenance services for furnaces, air conditioners, boilers, and advanced HVAC technologies. Our technicians maintain continuous training in emerging HVAC innovations, ensuring clients receive cutting-edge solutions. From routine maintenance to emergency repairs, we guarantee professional service with a personal touch, backed by our 100% satisfaction guarantee.
Services
Furnace Installation
Air Conditioning Repair
Boiler Maintenance
Indoor Air Quality
Water Heater Replacement
Commercial HVAC Service
Dryer Vent Cleaning
Details
- Year established: 2000
Highlights and features
- 20+ years serving Southwest Suburban Chicago communities
- NATE-certified technicians with specialized HVAC expertise
- 24/7 emergency service for urgent heating/cooling needs
- Flexible financing options including 0% interest for 12 months
- Family-owned business with personalized customer service
Associations and certifications
- NATE
- Angie's List
- Bolingbrook Chamber of Commerce
What people say
Very professional and honest
Prompt and professional service
Explained everything clearly
Excellent workmanship
24/7 emergency availability
Services
Heating Installation
We specialize in complete heating system installations for residential and commercial properties. Our certified technicians handle gas and electric furnaces, boilers, and radiant heating systems. We ensure proper system sizing and integration with thermostats and zone controls. All installations follow manufacturer specifications and local building codes. Our team provides post-installation performance checks to guarantee optimal efficiency and comfort.
Air Conditioning Repair
Our NATE-certified technicians diagnose and repair all types of air conditioning systems. We service central AC units, ductless mini-splits, and heat pumps. Our repair process includes refrigerant level checks, coil cleaning, and electrical component testing. We use factory-authorized parts for all repairs. Emergency service is available 24/7 to restore cooling during peak summer months.
Indoor Air Quality
We offer comprehensive indoor air quality solutions including air cleaners, humidifiers, and UV germicidal systems. Our technicians install and service energy recovery ventilators to improve air circulation. We address allergen reduction and humidity control for healthier living environments. All installations include system performance verification and customer education on equipment operation.
Water Heater Service
We provide repair and installation services for traditional tank and tankless water heaters. Our technicians handle gas and electric models from all major manufacturers. We offer efficiency evaluations and recommend appropriate replacement options. Emergency repair service is available for critical failures. All installations include proper venting and code compliance verification.
Commercial HVAC
Our team services light commercial HVAC systems including rooftop units. We provide preventive maintenance plans to minimize downtime for businesses. Our technicians handle system diagnostics, refrigerant management, and component replacements. We offer emergency repair services for commercial clients. All commercial work follows ASHRAE standards and manufacturer specifications.
People
Larry Greenwich
Owner/Founder
With 20 years in HVAC after a culinary career, Larry holds NATE certifications and Heat Exchanger Expert credentials. He serves as Bolingbrook Chamber of Commerce board member and Illinois Aviation Museum president. A licensed pilot, he brings technical precision and customer focus to operations.
Donna Greenwich
Office Manager
Managing daily operations since 2005, Donna provides customer service expertise from her background at Tellabs and Follett Corp. She oversees scheduling and client communications, ensuring smooth service coordination for residential and commercial clients.
Larry Greenwich Jr.
Lead Technician
Joining in 2007, Larry Jr. holds NATE certification and Heat Exchanger Examiner credentials. He specializes in HVAC diagnostics and system optimization, bringing technical innovation and a customer-first approach to service calls and installations.
Questions
Should I cover my air conditioner during winter?
Do not fully cover the unit to prevent moisture buildup. A top cover may help prevent debris accumulation from overhanging branches.
What filter type works best for my HVAC system?
Standard fiberglass filters work for basic protection. For air quality concerns, consider pleated filters or HEPA systems while maintaining proper airflow.
Are high-efficiency HVAC systems worth the investment?
High-efficiency equipment offers long-term savings, especially for furnaces. Air conditioners with higher SEER ratings provide better efficiency but require matching variable-speed furnaces for optimal performance.
What are the benefits of a 2-stage furnace?
2-stage furnaces provide consistent temperatures, quieter operation, improved air filtration, and fuel efficiency by operating at lower capacity most of the time.
How does a variable speed blower benefit my system?
Variable speed blowers reduce temperature swings, operate more quietly, improve energy efficiency by 20-30%, and enhance overall system performance through consistent airflow.
Do you offer financing options for HVAC upgrades?
Yes, we offer 0% interest financing for 12 months and 6.99% APR 5-year loans for qualifying HVAC equipment replacements.
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