Find and Invite the Best Commercial HVAC Contractors in Gaithersburg, MD

Tired of outdated contact lists and the hassle of calling to check bidding intent?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.

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75 Verified HVAC companies in Gaithersburg, MD

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

Coastal Heating & Air Conditioning logo

Coastal Heating & Air Conditioning

Annapolis, MD 21401

Coastal Heating & Air Conditioning Co., Inc. is a family-owned business with over 50 years of experience, providing a wide range of HVAC services including installation, repair, and maintenance for residential and commercial customers in the greater Annapolis, MD area. They specialize in air conditioning, heating, geothermal solutions, and indoor air quality, and are committed to offering exceptional service with a satisfaction guarantee.

Verified


21 miles from Gaithersburg, MD

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Call Crowley logo

Call Crowley

7715 Erie St. Annandale, VA 22003

Call Crowley, LLC is a full-service HVAC and plumbing contractor offering emergency services, repairs, and installations for residential and commercial properties in Vero Beach, Florida, and surrounding areas. The company is led by Jim Crowley, a licensed master plumber and master gas fitter with over 100 years of family experience in the industry.

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10 miles from Gaithersburg, MD
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Ronco Mechanical Contractors logo

Ronco Mechanical Contractors

8916 Simpson Ln, Clinton, MD 20735

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15 miles from Gaithersburg, MD
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Long's Corporation logo

Long's Corporation

11215-G Lee Hwy. Fairfax, VA 22030

Long's Corporation is a third-generation, women-owned and operated company providing residential plumbing and HVAC services in the Northern Virginia area since 1936.

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10 miles from Gaithersburg, MD
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Mannix Heating & Cooling logo

Mannix Heating & Cooling

26955 Gum Spring Rd. Chantilly, VA 20152

Mannix Heating & Cooling is a family-owned and operated HVAC company that has been serving Gaithersburg, MD, Chantilly, VA, and surrounding areas since 2010, and expanded to serve St. Petersburg, FL, and surrounding areas since 2024. They offer a comprehensive range of services including installation, maintenance, and repair of heating, cooling, and electrical systems, and are recognized as a Carrier Factory Authorized Dealer.

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12 miles from Gaithersburg, MD
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KMN Mechanical logo

KMN Mechanical

7400 Boston Blvd, Springfield, VA 22153

Since 1992, KMN Mechanical has been providing superior mechanical HVAC contracting services in the Washington metro area, building a reputation for quality work and exceptional customer care. The company maintains offices, a shop, and a warehouse in Springfield, Virginia, and offers services including air conditioning, heating, sheet metal fabrication, ventilation, and welding.

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10 miles from Gaithersburg, MD
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Welch & Rushe logo

Welch & Rushe

391 Prince George's Blvd. Upper Marlboro, MD 20774

Welch & Rushe is a full-service mechanical company offering a comprehensive range of services including 24/7 emergency HVAC and plumbing services, preventive maintenance contracts, and construction services, with over 50 years of experience in the industry. They serve clients in Maryland, Pennsylvania, Virginia, the District of Columbia, West Virginia, and have completed projects worldwide.

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15 miles from Gaithersburg, MD
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Vernon The Heating & Cooling Specialist logo

Vernon The Heating & Cooling Specialist

42655 Trade W Dr, Sterling, VA 20166

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12 miles from Gaithersburg, MD
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Molecular Systems logo

Molecular Systems

1818 New York Ave., N.E. Ste. 214-G Washington, DC 20002

Molecular Systems, Inc. is a construction firm specializing in roofing, drywall, HVAC, plumbing, and waterproofing for large-scale projects, serving as a regional supplier of construction supplies to businesses and government agencies in the Washington D.C., Maryland, and Virginia metropolitan area.

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14 miles from Gaithersburg, MD
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Priority Mechanical Contractors logo

Priority Mechanical Contractors

14236 Cherry Lane Ct, Laurel, MD 20707

Priority Mechanical Contractors, LLC (PMC) is a company that provides HVAC services, installation, and energy conservation solutions to multi-family and commercial property management and construction industries, with a focus on large-scale multi-family projects and a reputation for completing projects on time and within budget.

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15 miles from Gaithersburg, MD
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Hugee Corporation logo

Hugee Corporation

1818 New York Ave NE, Washington, DC 20002

Hugee Corporation is a family-owned and operated HVAC company that has been serving the residential, commercial, and industrial needs of the Washington D.C. Metropolitan area since 1984, offering a wide range of heating, cooling, and indoor air quality products and services, including emergency services.

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14 miles from Gaithersburg, MD
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AG Electrical Services logo

AG Electrical Services

3045 Colvin St, Alexandria, VA 22314

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22 miles from Gaithersburg, MD
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B&R Construction Services logo

B&R Construction Services

502 McCormick Dr, Glen Burnie, MD 21061

B&R Construction Services, Inc. is a multi-disciplinary firm founded in 1992, offering mechanical, electrical, and plumbing (MEP) engineering, design, construction management, and dry utility design and commissioning services. With a staff of 37 professionals, including 5 registered engineers, they serve a variety of sectors such as commercial, retail, mixed-use, and entertainment, and are located near BWI Airport.

Verified


21 miles from Gaithersburg, MD

Specializations (16)

Airport

Casino

Federal Government

Financial

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OpenWorks logo

OpenWorks

10640 Page Ave. Ste. 120 Fairfax, VA 22030

OpenWorks is a total facility management company offering a suite of services including commercial cleaning, landscape maintenance, pest control, HVAC, electrical, lighting, handyman, plumbing, and supply replenishment to various industries such as education, healthcare, residential property management, and more. The company prides itself on operational oversight, consistency, and a franchise model that ensures quality and reliability across multiple sites.

Verified


10 miles from Gaithersburg, MD

Specializations (17)

Education

Federal Government

Financial

Fitness

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JPG Plumbing & Mechanical Services logo

JPG Plumbing & Mechanical Services

8260 Patuxent Range Rd Jessup, MD 20794

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11 miles from Gaithersburg, MD
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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

FAQs

What is Downtobid, and how does it work for finding HVAC contractors in Gaithersburg, MD?

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


How do I request a bid from a HVAC contractor in Gaithersburg, MD?

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 Gaithersburg, MD will then respond with their bids. It’s often helpful to call contractors after submitting a request, especially if your project is urgent.


How does Downtobid verify the contractors listed in Gaithersburg, MD?

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.


What information should I include in my bid request for HVAC contractors in Gaithersburg, MD?

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.


What are the best practices for contacting HVAC contractors in Gaithersburg, MD?

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.


What if I have a large project and don’t want to go contractor by contractor?

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.


How long does it take to get a response from a contractor in Gaithersburg, MD?

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 Gaithersburg, MD

Total contractors

2210 contractors

Total union contractors

103 union contractors

Total non union contractors

1626 non union contractors

Total minority owned businesses

97 minority owned businesses

Total women owned businesses

37 women owned businesses

Average response time

5 days

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