Find and Invite the Best Commercial HVAC Contractors in Janesville, WI

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75 Verified HVAC companies in Janesville, WI

Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.

All Comfort Services logo

All Comfort Services

5245 Voges Rd. Madison, WI 53718

All Comfort Services is a Madison, WI-based company offering a comprehensive range of HVAC, electrical, and plumbing services, including emergency repairs, installations, and maintenance. With over 50 years of experience, the company prides itself on exceptional service and a commitment to customer satisfaction, serving both residential and commercial clients.

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18 miles from Janesville, WI

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Certified Refrigeration & Mechanical logo

Certified Refrigeration & Mechanical

5817 Femrite Dr. Madison, WI 53718

Certified Refrigeration & Mechanical, Inc. is a Wisconsin-based company specializing in the design, engineering, installation, optimization, retrofits, service, and maintenance of refrigeration and HVAC systems, as well as equipment sales, serving the entire state of Wisconsin and the Northern Suburbs of Illinois.

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18 miles from Janesville, WI
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Thermo-Tech Mechanical Insulation logo

Thermo-Tech Mechanical Insulation

508 W Main St, Watertown, WI 53094

Thermo-Tech Mechanical Insulation, Inc. is a full-service mechanical insulation company founded in 1986, providing a range of services including commercial and industrial insulation for HVAC systems, plumbing, ductwork, and more, with operations centered in Watertown, Wisconsin and serving the construction industry in Wisconsin and surrounding areas.

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19 miles from Janesville, WI
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Olson Heating & Cooling logo

Olson Heating & Cooling

214 E. Lincoln St. Mount Horeb, WI 53572

Olson Heating & Cooling is a South-Central Wisconsin HVAC contractor with over 40 years in business, specializing in the installation, maintenance, and repair of heating and air conditioning systems for both residential and commercial customers.

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18 miles from Janesville, WI
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Modern Heating & Cooling logo

Modern Heating & Cooling

10050 U.S. Hwy. 14 Black Earth, WI 53515

Modern Heating & Cooling is a professional HVAC company based in Black Earth, Wisconsin, offering a wide range of services including installation, replacement, and repair of heating and cooling systems for residential and light commercial applications. Established in 1985, the company provides 24/7 emergency services and specializes in air purification, geothermal solutions, and hydronics, serving Madison, WI, and surrounding counties.

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18 miles from Janesville, WI
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Air Systems logo

Air Systems

4520 County Hwy. F, N. P.O. Box 522 Delavan, WI 53115

Air Systems Inc. is a family-owned and operated business specializing in heating, plumbing, and drain cleaning services, with over 30 years of experience in the industry, serving the Walworth, Jefferson, and Waukesha Counties and surrounding areas since 1991.

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18 miles from Janesville, WI
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R&W Heating & Cooling logo

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.

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1 mile from Janesville, WI

Specializations (2)

Healthcare

Museum

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Agsun logo

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.

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1 mile from Janesville, WI
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J.M. Brennan logo

J.M. Brennan

6430 Ronald Reagan Ave, Madison, WI 53704

J.M. Brennan, Inc., established in 1932 and based in Milwaukee, WI, is a full-service mechanical contractor serving Southeastern Wisconsin with expertise in HVAC, plumbing, process piping, controls, industrial sheet metal, and 24/7 emergency service.

Verified


18 miles from Janesville, WI

Specializations (13)

Correctional

Education

Federal Government

Financial

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BETHKE Heating & Air Conditioning logo

BETHKE Heating & Air Conditioning

521 Half Mile Rd. Verona, WI 53593

BETHKE Heating & Air Conditioning, Inc. is a locally owned and operated business established in 1989, providing heating, cooling, and indoor air quality solutions to residential customers and small commercial clients in Madison, Verona, and surrounding Wisconsin communities.

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18 miles from Janesville, WI
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Brothers HVAC logo

Brothers HVAC

750 Leeward Ln. Oregon, WI 53575

Brothers HVAC is a professional HVAC service provider based in Oregon, Wisconsin, offering a wide range of commercial and residential services, including installation, maintenance, and repairs, backed by a team with over two decades of experience in the industry.

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18 miles from Janesville, WI
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IKM Building Solutions logo

IKM Building Solutions

6950 Gisholt Dr. Madison, WI 53713

IKM Building Solutions, Inc. is a company with over 90 years of experience providing total mechanical solutions for facility environments in Wisconsin, specializing in services such as fabrication, HVAC, building automation, plumbing, and indoor air quality solutions.

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18 miles from Janesville, WI
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AE Heating and Air Conditioning logo

AE Heating and Air Conditioning

1110 B Gateway Dr. Milton, WI 53563

AE Heating and Air Conditioning LLC is a fully licensed and insured HVAC company based in Milton, Wisconsin, offering a range of services including system design, heating, and air conditioning, with over 20 years of experience.

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1 mile from Janesville, WI
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ADS Mechanical logo

ADS Mechanical

P.O. Box 14264 Madison, WI 53713

ADS Mechanical LLC is a recognized innovator and leader in the HVAC contracting industry, known for prioritizing customer satisfaction and delivering quality products and services. They provide HVAC services to commercial and industrial organizations.

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18 miles from Janesville, WI
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Quigley-Smart logo

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.

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1 mile from Janesville, WI
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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!"

Robyn LynnMRI Builders

"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."

Zalmy KavkaFounder, ZK Builders

""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.""

Ryan PastorEstimator at George H. Pastor and Sons General Contracting

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!"

Robyn LynnMRI Builders

"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."

Zalmy KavkaFounder, ZK Builders

""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.""

Ryan PastorEstimator at George H. Pastor and Sons General Contracting

FAQs

What is Downtobid and how can it help find HVAC professionals in Janesville, WI?

Downtobid is a platform that helps you find HVAC contractors in Janesville, WI and submit bid requests for your projects. You provide project details, and the contractors respond with their bids through the platform.


Requesting bids from Janesville, WI-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 Janesville, WI 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 Janesville, WI 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 Janesville, WI

Total contractors

1486 contractors

Total union contractors

168 union contractors

Total non union contractors

979 non union contractors

Total minority owned businesses

33 minority owned businesses

Total women owned businesses

18 women owned businesses

Average response time

3 days

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