Find and Invite the Best Commercial HVAC Contractors in Rockford, IL
Access up-to-date, vetted contractor profiles and simplify your bidding process with our modern commercial contractor database.
15 Best HVAC contractors in Rockford, IL
Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.
Complete Mechanical Solutions
P.O. Box 518 Rockton, IL 61072
Complete Mechanical Solutions is an HVAC contractor located in Machesney Park, IL, offering commercial and residential heating, cooling, industrial ventilation services, and 24/7 emergency services with free estimates and warranties available.
Verified
Specializations (1)
Office Building
1 Source Mechanical
821 E Lincoln Hwy, Dekalb, IL 60115
1 Source Mechanical, Inc. is a locally-owned and trusted commercial HVAC company based in Chicago, specializing in heating, air conditioning, plumbing, and refrigeration services, offering premier mechanical services at reasonable prices with a commitment to energy efficiency.
Verified
Fleming Heating & Air Conditioning
South Beloit, IL 61080
Fleming Heating & Air Conditioning Inc. is a provider of high-quality HVAC services in South Beloit and Belvidere, offering a range of services including installation, repair, and maintenance of heating and cooling systems since 1964. They are recognized as a Lennox Premier Dealer and have received the Lennox Industries Years of Partnership Award.
Verified
Specializations (3)
Federal Government
Government
Office Building
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Loescher Heating & Air Conditioning
Freeport, IL 61032
Loescher Heating & Air Conditioning is a trusted HVAC service provider with over 50 years of experience, offering residential and commercial HVAC solutions, including installation, repair, and maintenance in the Midwest region.
Verified
Specializations (9)
Education
Federal Government
Financial
Government
Temperature Doctors Heating & Cooling
Rockford, IL 61101
Temperature Doctors Heating & Cooling, Inc. is a Rockford, Illinois-based HVAC service provider offering a range of heating and cooling solutions, including installation, repair, and maintenance for residential and commercial systems since 2006.
Verified
Reynolds Heating & Cooling
532 E. Milwaukee St. Whitewater, WI 53190
Reynolds Heating & Cooling LLC is an HVAC service provider in Whitewater, offering 24-hour emergency services, installations, maintenance, and repairs for heating and cooling systems since 1986, with a commitment to treating customers with dignity and respect.
Verified

G's R Plumbing & Heating
1831 E Lincoln Hwy, DeKalb, IL 60115
Your Local Dekalb Plumbing & Heating Experts. G's R Plumbing and Heating installs and repairs from residential to new schools, to health care centers and giant warehouses.
Verified
Active contractor
Perfect Temp Heating & Cooling
Loves Park, IL 61111
Perfect Temp Heating & Cooling is a top HVAC contractor in Rockford, IL, offering professional air conditioning, heating, and ductwork repair and installation services to help home and business owners with their HVAC needs.
Verified
Specializations (5)
Federal Government
Government
Grocery
Military

Miller Engineering
1616 S Main St, Rockford, IL 61102
Miller Engineering is here to support your remodeling and new construction needs across residential, commercial, and industrial projects in Rockford and the surrounding areas.
Verified
Active contractor

DeKalb Mechanical
339 Wurlitzer Dr, DeKalb, IL 60115
815-756-6528 - FREE estimates. Residential and commercial heating and air conditioning repairs and installations. Refrigeration unit repairs.
Verified
R&W Heating & Cooling
Milton, WI 53563
R&W Heating & Cooling, Inc. is a local HVAC service provider in Milton, WI, offering a wide range of heating and cooling services including repair, installation, and maintenance for residential and commercial clients since 1960.
Verified
Specializations (2)
Healthcare
Museum
Agsun
1321 S. Jackson St. Janesville, WI 53546
Agsun Corporation is a family-owned business established in 1974, providing a wide range of electrical services, HVAC solutions, and PV solar installations for residential, commercial, and industrial clients, and is known for its professional staff and positive reviews.
Verified
Ron's Heating & Air Conditioning
424 Wyman St. Unit 8 Sycamore, IL 60178
Ron's Heating & Air Conditioning is a family-owned and operated business specializing in residential and commercial HVAC services in the Sycamore/DeKalb area, established in 1972 and known for customer satisfaction.
Verified
Active contractor
Quigley-Smart
600 E. Memorial Dr. Janesville, WI 53545
Quigley-Smart, Inc. is a family-owned HVAC and plumbing solutions provider in Beloit, WI, with over 75 years of experience, offering a range of services including air conditioning, heating, plumbing, and water heater services for residential and commercial customers.
Verified
Thiele Heating & Air Conditioning
1820 Cranston Rd. Beloit, WI 53511
Thiele Heating & Air Conditioning is a family-owned and operated business established in 1983 in Beloit, Wisconsin, providing over 30 years of heating, air conditioning, and refrigeration services to residential homes and local businesses in Southern Wisconsin and Northern Illinois.
Verified
Good to know insights about HVAC contractors in Rockford, IL
Bidding difficulty
High
Average response time
3 days
Average interest distance
55 miles
Average lead time to bid
16 days
How far are HVAC contractors in Rockford, IL willing to travel?
Every trade and region has difference sensitivity to distance. We grouped distances into 4 categories to help you understand the distribution of 16 bid packages. The ratios of bidding contractors per distance group are 0%, 60%, 0%, and 0%.
How much lead time do HVAC contractors in Rockford, IL need to bid?
Every trade and region has difference sensitivity to due time. We grouped due times into 3 categories to help you understand the distribution of 11 bid packages. The ratios of bidding projects per due time group are NaN%, 50%, and 0%.
Commercial HVAC contractors insights in Rockford, IL
Explore 1528 verified HVAC contractors in Rockford, IL. Our platform analyzes real bidding activity, response times, and project preferences to help you make informed decisions. These insights are based on actual market data to streamline your contractor selection process.
Total contractors
1528 contractors
Total union contractors
169 union contractors
Total non-union contractors
1007 non-union contractors
Total minority-owned businesses
36 minority-owned businesses
Total women-owned businesses
20 women-owned businesses
What certifications do HVAC contractors hold?
Professional certifications and licenses held by HVAC contractors in Rockford, IL, including OSHA safety training, trade-specific licenses, and manufacturer certifications required for specific project types.
What project types are HVAC contractors bidding on?
Project types that HVAC contractors in Rockford, IL are actively bidding on, including commercial office buildings, healthcare facilities, educational institutions, retail spaces, and industrial facilities.
What project owners are HVAC contractors bidding for?
Top general contractors and project owners that HVAC contractors in Rockford, IL are bidding for, showing which construction firms and developers are most active in the local market.
Save A Lot
Ford
Burlington
Four Seasons
Gap
Home Depot
Meijer
Milestones
Sears
HVAC projects insights in Rockford, IL
Explore 59 HVAC construction projects in Rockford, IL. Our analysis covers project sizes, building types, and market activity patterns to help contractors make strategic bidding decisions based on actual project data.
Total projects
59 projects
Average square footage
7,158 square feet
Maximum square footage
96,217 square feet
What square footage ranges are HVAC projects in?
Distribution of HVAC project sizes in Rockford, IL by square footage. Small projects include tenant improvements and retail spaces. Medium projects encompass commercial buildings and office spaces. Large projects represent major developments requiring significant resources and bonding capacity.
What construction sectors are HVAC projects in?
Building types and construction sectors for HVAC projects in Rockford, IL, including commercial office buildings, healthcare facilities, educational institutions, retail spaces, industrial facilities, and government projects.
Why Downtobid is the Go-To Platform for Contractors
"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"
"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."
"I love, the personalization of it. You get it more directed towards the contractors that we need. You make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more detailed, correct quotes that we're looking for from you guys as opposed to maybe other places."
Why Downtobid is the Go-To Platform for Contractors
"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"
"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."
"I love, the personalization of it. You get it more directed towards the contractors that we need. You make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more detailed, correct quotes that we're looking for from you guys as opposed to maybe other places."
FAQs
How can Downtobid help me find the best commercial HVAC contractors in Rockford, IL?
Downtobid helps you find the best HVAC contractors in Rockford, IL and submit bid requests for your projects. You provide project details, and the contractors respond with their bids through the platform.
Requesting bids from Rockford, IL-based HVAC contractors
You can invite a contractor directly through our platform. Visit the contractor’s profile and click ‘Invite to Bid.’ Fill out the project details, including scope, timeline, and specific needs. Contractors in Rockford, IL will then respond with their bids. It’s often helpful to call contractors after submitting a request, especially if your project is urgent.
Contractor verification process on Downtobid
Downtobid sets itself apart by verifying each contractor through a multi-step process. We use AI to ensure that contractor information, including trades, is accurate. We cross-check details using databases, public records, and Google Maps to confirm that businesses are active and their contact information is up-to-date before listing them.
Essential information for HVAC project bid requests
When submitting a bid request, include clear details about your project, such as materials needed, deadlines, and any specific requirements. The more specific you are, the better the contractor can assess and quote the job accurately.
Tips for contacting local HVAC professionals
If your project is urgent, it’s a good idea to call the contractor directly after submitting a bid request. This helps ensure they understand the timeline and scope of work, especially if immediate service is needed.
Managing bids for large-scale HVAC projects
If you have a larger project and don’t want to contact each contractor individually, you can reach out to us directly. We offer an ITB (Invitation to Bid) platform where you can manage bids from multiple contractors at once.
Expected response times from Rockford, IL contractors
Most HVAC contractors will respond within 24-48 hours, depending on the complexity of your request. However, response times may vary – so be sure to follow up!
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