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Tired of outdated contact lists and the hassle of calling to check bidding intent?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.
75 Verified HVAC companies in Gaithersburg, MD
Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.
Energesco Mechanical
1000 Cameron St, Alexandria, VA 22314
Energesco Mechanical is a mechanical contracting company specializing in new construction, renovation, retrofit, and maintenance of commercial and institutional HVAC systems, focusing on enhancing performance, efficiency, and profitability for their customers' facilities.
Verified
South Mountain Mechanical Contractors
15940 Frederick Rd, Woodbine, MD 21797
South Mountain Mechanical Contractors Inc. is a family-owned HVAC and commercial refrigeration company based in Woodbine, Maryland, with over 40 years of experience, specializing in the design, installation, and service of commercial and residential equipment. Founded in 2005, the company serves numerous counties along the I-70 corridor in the Baltimore Metropolitan Area and is dedicated to exceptional customer service and satisfaction.
Verified
R.V. Carey's
14650 Rothgeb Dr. Ste. C Rockville, MD 20850-5311
R.V. Carey's is a family-owned and operated plumbing and heating service company based in Rockville, MD, providing top-notch services to Maryland, Virginia, and Washington D.C. since 1979. They offer 24/7 emergency services, same-day service with fully stocked trucks, and pride themselves on complete customer satisfaction and transparent pricing based on time and materials.
Verified
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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.
Verified
McGuire Plumbing & Heating
5101 Pennington Ave. Curtis Bay, MD 21226
McGuire Plumbing & Heating Inc. is a family-owned and operated commercial plumbing company based in Maryland, serving Maryland, Virginia, DC, and Delaware since 1997. They offer a complete range of plumbing and heating services, specializing in installation, repair, and maintenance for a diverse clientele, including business owners, property managers, and residential homeowners.
Verified
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.
Verified
J&G Contractors
8332 Richmond Hwy. Ste. 209 Alexandria, VA 22309
J&G Contractors is a family-owned business founded in 2007, providing technical security and safety solutions in Virginia, Maryland, and Washington DC. The company specializes in a wide range of construction projects, including office buildings, medical facilities, and commercial markets, and is known for its outstanding service, quality work, and competitive pricing.
Verified
Atlantic Blue Water Services
1802 Baltimore Blvd. Westminster, MD 21157
Atlantic Blue Water Services is a company specializing in a variety of water treatment services, including conditioners, filters, heaters, and well system products, as well as plumbing and water testing. They are known for their large retail store in Maryland, a full-service laboratory, and a commitment to providing safe and healthy water solutions, with over 26 years in the business and numerous accolades for their services.
Verified
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.
Verified
Castaway Plumbing
Frederick, MD 21705
Castaway Plumbing Inc. is a small, locally owned and operated plumbing company in Maryland, offering residential and commercial plumbing services since 2003, with a team experienced since 1991 and known for their pride in work and 100% commitment to every job.
Verified
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.
Verified
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.
Verified
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.
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 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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