Find and Invite the Best Commercial HVAC Contractors in New Haven, CT
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15 Best HVAC contractors in New Haven, CT
Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.
TerraNova Plumbing
121 Tyler Ave. Miller Place, NY 11764
TerraNova Plumbing is a family-owned plumbing, heating, and gas fitting company that has been serving the Comox Valley and Northern Vancouver Island since 1983, offering light commercial and residential services including waterworks and 24/7 emergency response.
Verified
Active contractor
Action Air Systems
Manchester, CT 06042
Action Air Systems, Inc. is a full-service mechanical contractor specializing in commercial and industrial HVAC and plumbing installations, offering design, build, and installation services for complex mechanical systems since 1987. The company provides 24/7 emergency repair and maintenance services and is based in Manchester, CT, with a state-of-the-art sheet metal shop, warehouse, and training facility.
Verified
Active contractor
Specializations (10)
Education
Federal Government
Government
Healthcare
Christensen's Plumbing, Heating & Air Conditioning
Greenlawn, NY 11740
Christensen's Plumbing, Heating & Air Conditioning is a local, family-owned business in Huntington, NY, offering residential and commercial plumbing, heating, air conditioning, and remodeling services, with a commitment to efficient service and customer comfort.
Verified
Active contractor
Specializations (1)
Office Building
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SAM Mechanical
154-1 Remington Blvd. Ronkonkoma, NY 11779
SAM Mechanical is a full-service HVAC and plumbing company providing residential and commercial air conditioning, heating repairs, installations, and services such as ductless mini-splits, gas conversions, oil burner services, and oil tank installations in Suffolk and Nassau counties on Long Island, NY.
Verified
Active contractor
L&R Mechanical Services
Wolcott, CT 06716, Wolcott, CT 06716
L&R Mechanical Services LLC is a second-generation, family-owned plumbing and HVAC company based in Bristol, CT, established in 2005, offering commercial and industrial services with a focus on safety, customer service, and fair pricing.
Verified
Active contractor
Advanced Sheetmetal Associates
52 Industrial Park Access Rd, Middlefield, CT 06455
Advanced Sheetmetal Associates is a full-service mechanical contractor based in Connecticut, specializing in sheet metal, plumbing, HVAC, and process piping with over 30 years of experience, catering to a variety of sectors including hospitals, pharmaceuticals, manufacturing, education, defense, and senior living.
Verified
Active contractor
Lee Seward Plumbing & Heating
5 Old Town Park Rd. New Milford, CT 06776
Lee Seward Plumbing & Heating Inc. is a company based in Brookfield, CT, providing plumbing and heating services, including medical gas piping installation, to the Connecticut and New York areas since 1978. They specialize in new construction for both residential and commercial projects and are known for their professional, fast, and reliable service.
Verified
Active contractor
Medley Air
265 McCormick Dr, Bohemia, NY 11716
Medley Air Inc. is a full-service HVAC contractor based in Bohemia, New York, providing heating, cooling, indoor air quality, and custom solutions for both residential and commercial clients in the New York Long Island area.
Verified
High reply rate
Active contractor
Specializations (2)
Office Building
Retail - General
Accelerated Services
158-2 Remington Blvd. Ronkonkoma, NY 11779
Accelerated Services, Inc. Allied H.V.A.C. INC. is a full-service heating and air conditioning company that specializes in delivering and maintaining optimal comfort levels for thousands of customers across Suffolk and Nassau counties in Long Island, N.Y.
Verified
Active contractor
MJ Daly
110 Mattatuck Heights Rd, Waterbury, CT 06705
MJ Daly LLC is a premier mechanical contracting company based in Connecticut and Western Massachusetts, offering a comprehensive range of services for new and existing building systems, including virtual design and construction, engineering, mechanical/HVAC, fire protection, and building automation, with a commitment to total system responsibility and one-hundred percent customer satisfaction.
Verified
Active contractor
Specializations (2)
Healthcare
Office Building
JCP Plumbing & Heating
1600 N Ocean Ave, Unit 6, Holtsville, NY 11742
JCP Plumbing & Heating is a family-run, full-service plumbing and heating company based in Long Island, NY, dedicated to customer satisfaction, honesty, and integrity, offering a range of services for both residential and commercial properties in Suffolk County.
Verified
Active contractor
Nassau Suffolk Mechanical
513 Acorn St. Ste. F Deer Park, NY 11729
Nassau Suffolk Mechanical is a full-service plumbing and heating contractor operating in Nassau and Suffolk counties, offering a range of services including emergency repairs, sewer and drain services, hot water heater installations, and oil to gas conversions. The company prides itself on fast, quality service with 24/7 availability and is fully licensed and insured with over 35 years of experience.
Verified
Active contractor
GMA Mechanical
Port Jefferson, NY 11777
GMA Mechanical Corporation is an HVAC firm established in 1986, specializing in the design, fabrication, installation, and maintenance of heating, ventilation, and air conditioning systems for clients in the Tri-State area around New York, with a portfolio that includes projects for Amazon, P.C. Richard & Son, and New York University Oncology Center.
Verified
Active contractor
Specializations (6)
Education
Financial
Healthcare
Higher Education

DeMonte Plumbing
367 Veterans Memorial Hwy, Commack, NY 11725 USA
Fully licensed and insured in both Suffolk and Nassau counties, we are Long Island’s complete resource for all commercial plumbing needs.
Verified
High reply rate
Active contractor

Specializations (2)
Education
Healthcare
Good to know insights about HVAC contractors in New Haven, CT
Bidding difficulty
High
Average response time
2 days
Average interest distance
26 miles
Average lead time to bid
17 days
How far are HVAC contractors in New Haven, CT 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 44 bid packages. The ratios of bidding contractors per distance group are 60%, 6%, 0%, and 0%.
How much lead time do HVAC contractors in New Haven, CT 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 24 bid packages. The ratios of bidding projects per due time group are 0%, 20%, and 30%.
Commercial HVAC contractors insights in New Haven, CT
Explore 1969 verified HVAC contractors in New Haven, CT. 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
1969 contractors
Total union contractors
112 union contractors
Total non-union contractors
1194 non-union contractors
Total minority-owned businesses
98 minority-owned businesses
Total women-owned businesses
36 women-owned businesses
What certifications do HVAC contractors hold?
Professional certifications and licenses held by HVAC contractors in New Haven, CT, 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 New Haven, CT 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 New Haven, CT are bidding for, showing which construction firms and developers are most active in the local market.
Burlington
Gap
Hampton
Marriott
Ford
Milestones
Four Seasons
Save A Lot
Goldman Sachs
HVAC projects insights in New Haven, CT
Explore 37 HVAC construction projects in New Haven, CT. 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
37 projects
Average square footage
11,046 square feet
Maximum square footage
55,480 square feet
What square footage ranges are HVAC projects in?
Distribution of HVAC project sizes in New Haven, CT 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 New Haven, CT, 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 New Haven, CT?
Downtobid helps you find the best HVAC contractors in New Haven, CT and submit bid requests for your projects. You provide project details, and the contractors respond with their bids through the platform.
Requesting bids from New Haven, CT-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 New Haven, CT 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 New Haven, CT 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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