Find and Invite the Best Commercial HVAC Contractors in O Fallon, MO
Tired of outdated contact lists and the hassle of calling to check bidding intent? Simplify your bidding process with Downtobid's modern commercial contractor database. Access up-to-date, vetted profiles and ensure you connect with the right trades.
75 Verified HVAC companies in O Fallon, MO
Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.
Gateway Air Conditioning Contractors
2323 Sublette Ave. Ste. 1S Saint Louis, MO 63110
Gateway Air Conditioning Contractors is a professional organization that provides education, advocacy, and licensing support for Missouri contractors, with a focus on advancing careers, attracting talent, and offering workforce solutions.
Verified
Murphy
1233 North Price Road, St. Louis, MO 63132
Murphy Company is a leading full-service mechanical contracting firm with over 100 years of experience, specializing in HVAC, plumbing, sheet metal, high purity, process piping, and refrigeration services, as well as offering design-build, fabrication, and preventative maintenance. Headquartered in St. Louis, Missouri, with additional offices in Illinois, Colorado, and Wyoming, the company serves a variety of markets including pharmaceutical, healthcare, education, and more.
Verified
Specializations (20)
Airport
Casino
Education
Federal Government
C&K Heating & Cooling
9118 Bobb Ave. Saint Louis, MO 63114
C&K Heating & Cooling, Inc. is a family-owned and operated HVAC company founded in 1992, providing a full range of heating, cooling, and air quality services to residential and commercial customers in the Metro East area, including installation, repair, and maintenance of air conditioning systems, furnaces, geothermal heat pumps, water heaters, and custom sheet metal fabrication.
Verified
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Majestic Integrated Construction Solutions
6439 Plymouth Ave. Ste. 113 Saint Louis, MO 63133
Majestic Integrated Construction Solutions L.L.C, founded in 2012, is a licensed and fully bonded electrical and mechanical contractor offering construction management services for industrial, commercial, and residential customers in St. Louis, Missouri, and surrounding areas.
Verified
Seliga Heating & Cooling
6211 Gravois Road St. Louis, MO 63116
Seliga Heating & Cooling is a fourth-generation family-owned HVAC business that has been serving homes and businesses in St. Louis, Missouri since 1927, offering residential and commercial sales, service, and installation of heating and air conditioning equipment.
Verified
BEAM of St. Louis
2505 Metro Blvd. Ste. G Maryland Heights, MO 63043
BEAM of St. Louis was founded in 1981 and is an Authorized Distributor & Warranty Center for Eastern Missouri / Central & Southern Illinois.
Verified
Advantage Air
Valley Park, MO 63122
Advantage Air LLC is a full-service residential and commercial HVAC mechanical contractor founded by Michelle and Troy Jones in 1999, serving various brands of heating and cooling systems in the Saint Louis area for over 25 years. The company prides itself on top-line service and has built its success on customer referrals and a mission to provide the best level of HVAC service regardless of complexity.
Verified
SmartHouse Heating and Cooling
6921 Olive Blvd St. Louis, MO 63130
SmartHouse Heating and Cooling is a trusted HVAC contractor in St. Louis, providing a wide range of heating, cooling, and home performance services, including installation, repair, and maintenance of furnaces, air conditioners, and heat pumps. They are committed to energy efficiency, customer satisfaction, and are available 24/7 for emergency services.
Verified
Welsch Heating & Cooling
2175 Welsch Industrial Ct. P.O. Box 28545 Saint Louis, MO 63146
Welsch Heating & Cooling Company is a family-owned business providing heating and air conditioning services in the St. Louis/St. Charles area since 1895, recognized for service excellence, civic responsibility, and performance as a business leader in the community.
Verified
Air Comfort Service
10926 Lin Valle Dr. Saint Louis, MO 63123
Air Comfort Service, Inc. is an HVAC company serving the St. Louis area, offering a wide range of services including air conditioning, heating, insulation, and indoor air quality solutions for both residential and commercial clients.
Verified
Coleman Heating and Sheet Metal
13515 NW Industrial Dr, Bridgeton, MO 63044
Coleman Heating and Sheet Metal is a local, family-owned HVAC company based in Bridgeton, Missouri, providing residential and commercial HVAC services, including repairs, installations, and maintenance since 1987.
Verified
Haberberger
9744 Pauline Pl, St Louis, MO 63123
Since 1948, Haberberger, Inc. has been providing high-quality mechanical contracting solutions, fabrication, and HVACR services with a commitment to safety and cost-efficiency, aiming to complete projects with zero injuries, on time, and within budget.
Verified
Clay Piping Systems
1360 N Price Rd, St Louis, MO 63132
Clay Piping Systems, incorporated in 2010 and MBE-certified, specializes in fire protection, plumbing, and mechanical construction, focusing on client satisfaction and maintaining relationships built on trust and performance. With over 13 years of success, the company prides itself on its professional workforce, commitment to safety, and staying updated with technology and training in the industry.
Verified
AL-DON
11740 Lackland Industrial Dr. Saint Louis, MO 63146
AL-DON is a trusted HVAC service provider in St. Louis, offering residential and commercial air conditioning, heating, and indoor air quality services for over 65 years.
Verified
Fleddermann Heating & Cooling
9529 Yuma Dr, St. Louis, MO 63123
Fleddermann Heating & Cooling is an HVAC company with over 25 years of experience in the industry, offering a range of services including system maintenance, installations, and repairs, as well as home sale inspections. Founded by Dan Fleddermann, the company has grown from a single van operation to a team with multiple vehicles, serving the St. Louis area with a commitment to getting the job done right the first time.
Verified
Related Trades
HVAC Piping and Pumps
Refrigerant Piping
HVAC Air Distribution
HVAC Air Cleaning Devices
Central Heating Equipment
Central Cooling Equipment
Central HVAC Equipment
Decentralized HVAC Equipment
What the Early Adopters are Saying About Downtobid
"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, more specific, more detailed quotes, more the correct quotes that we're looking for from you guys as opposed to maybe other places.""
What the Early Adopters are Saying About Downtobid
"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, more specific, more detailed quotes, more the correct quotes that we're looking for from you guys as opposed to maybe other places.""
FAQs
What is Downtobid and how can it help find HVAC professionals in O Fallon, MO?
Downtobid is a platform that helps you find HVAC contractors in O Fallon, MO and submit bid requests for your projects. You provide project details, and the contractors respond with their bids through the platform.
Requesting bids from O Fallon, MO-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 O Fallon, MO 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 O Fallon, MO 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!
Quick stats about HVAC companies database in O Fallon, MO
Total contractors
1081 contractors
Total union contractors
110 union contractors
Total non union contractors
631 non union contractors
Total minority owned businesses
29 minority owned businesses
Total women owned businesses
14 women owned businesses
Average response time
3 days
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