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

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75 Verified HVAC companies in Gaithersburg, MD

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

Gaghan Mechanical logo

Gaghan Mechanical

5649d General Washington Dr, Alexandria, VA 22312

Since 1996, Gaghan Mechanical Inc. has been providing superior general construction and HVAC services in the Washington Metropolitan Area, serving federal government agencies and commercial clients. Headquartered in Alexandria, VA, the company specializes in mechanical and plumbing installations and has completed over 1,000 federal contracts.

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10 miles from Gaithersburg, MD

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Mahon Plumbing logo

Mahon Plumbing

6824 Ft. Smallwood Rd., Ste. A Baltimore, MD 21226

Mahon Plumbing is a family-owned plumbing company that has been providing a full range of residential and commercial plumbing services, including emergency plumbing, water heater installation, sewer and drain services, and gas line installation, to residents and businesses in Baltimore County, Baltimore City, Howard County, Anne Arundel County, Queen Anne's County, and surrounding areas in Maryland for over 30 years.

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21 miles from Gaithersburg, MD
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Advantage Air Conditioning of Virginia logo

Advantage Air Conditioning of Virginia

1329 Shepard Dr. Ste. 3 Sterling, VA 20164

Advantage Air Conditioning of Virginia is a fully licensed, insured, bonded, and certified mechanical contractor specializing in HVAC and plumbing systems design and installation for multi-family residential and commercial properties in the DC Metro area. With over 30 years of experience, they are recognized leaders in the industry, known for their professional system design and successful project management throughout Virginia, DC, and Maryland.

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12 miles from Gaithersburg, MD
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America's Green Heating & Air Conditioning logo

America's Green Heating & Air Conditioning

6907 Baltimore National Pike Ste. 7 Frederick, MD 21702-3664

America's Green Heating & Air Conditioning Company, LLC is a full-service HVAC company based in Maryland, offering heating, air conditioning, and indoor air quality solutions, including installation, repair, and maintenance services. They pride themselves on clean, fast, and friendly service with a focus on environmentally friendly practices.

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15 miles from Gaithersburg, MD
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L&B Universal logo

L&B Universal

3852 Dulles South Ct, Chantilly, VA 20151

L&B Universal, Inc. is a company based in Chantilly, VA, that has been serving the Washington DC Metropolitan area since 2006, specializing in providing safe, hazard-free commercial and residential HVAC services, including air conditioning, heating, water heaters, ductless HVAC, heat pumps, indoor air quality, and duct cleaning.

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10 miles from Gaithersburg, MD
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Charm Plumbing logo

Charm Plumbing

2139 Hanover Pike Hampstead, MD 21074

Charm Plumbing LLC is a family-operated, full-service plumbing company based in Carroll County, Maryland, offering a wide range of residential and commercial plumbing services, including project planning, on-site management, and various installations and repairs.

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16 miles from Gaithersburg, MD
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Red Steel HVAC logo

Red Steel HVAC

13945 Rover Mill Rd. West Friendship, MD 21794-9729

Red Steel HVAC, Inc. is a full-service heating and air conditioning company serving Delaware, Maryland, and Pennsylvania for over 25 years, offering a range of services including installation, repair, and maintenance of HVAC systems, with a commitment to providing the best service in the industry.

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11 miles from Gaithersburg, MD
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W. L. Gary Company logo

W. L. Gary Company

1140 3rd St NE Suite 406, Washington, DC 20002

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14 miles from Gaithersburg, MD
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Bennett Mechanical Services logo

Bennett Mechanical Services

532 Baltimore Blvd. Ste. 310 Westminster, MD 21157

Bennett Mechanical Services is a company with 59 years of experience specializing in HVAC services, maintenance, and complex projects involving mission-critical equipment for building owners, general contractors, and engineering firms in the Baltimore/Washington, Virginia, and DC area.

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16 miles from Gaithersburg, MD
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Anderson Mechanical Services logo

Anderson Mechanical Services

Overland Dr. #140 Sterling, VA 20166

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12 miles from Gaithersburg, MD
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AAI Heating, Air Conditioning & Industrial Refrigeration logo

AAI Heating, Air Conditioning & Industrial Refrigeration

1319 Shepard Dr, Sterling, VA 20164

AAI Heating, Air Conditioning & Industrial Refrigeration is a specialist in heating, air conditioning, industrial refrigeration, air filtration, and ventilation, serving the greater Washington D.C., Maryland, and Northern Virginia areas, including Montgomery County, Fairfax County, and Loudoun County.

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12 miles from Gaithersburg, MD
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S & C Mechanical Contractors logo

S & C Mechanical Contractors

1411 H St NE, Washington, DC 20002

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14 miles from Gaithersburg, MD
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Roman Mechanical logo

Roman Mechanical

5612 Lanham Station Rd, Lanham, MD 20706

Roman Mechanical is an MBE certified mechanical and plumbing company with over 50 years of combined experience, specializing in HVAC, plumbing, and site utilities, based in Lanham, Maryland.

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15 miles from Gaithersburg, MD
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Logan Mechanical logo

Logan Mechanical

9134 Piscataway Rd #1552, Clinton, MD 20735

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15 miles from Gaithersburg, MD
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Sole Design Services logo

Sole Design Services

9673 Main St, Fairfax, VA 22031

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10 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

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 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.


Requesting bids from Gaithersburg, MD-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 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.


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 Gaithersburg, MD 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 Gaithersburg, MD

Total contractors

2318 contractors

Total union contractors

118 union contractors

Total non union contractors

1640 non union contractors

Total minority owned businesses

103 minority owned businesses

Total women owned businesses

42 women owned businesses

Average response time

5 days

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