Find and Invite the Best Commercial HVAC Contractors in Frederick, MD
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15 Best HVAC contractors in Frederick, MD
Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.
K.G. Johnson
Mack Ave, Frederick, MD 21703
K.G. Johnson, Inc. is a commercial mechanical contractor that offers services such as complete plumbing systems, HVAC services, new construction, renovation, and professional design-build, with a focus on safety and reliability.
Verified

United Service Specialists
7559 Rickenbacker Dr Suite A, Gaithersburg, MD 20879
United Service Specialists is a licensed air conditioning and heating company in the Gaithersburg, MD area. Click to view our heating and cooling services!
Verified
Comfort Central
11 Manila Ave. Hagerstown, MD 21742
Comfort Central is a family-owned and operated business based in Williamsport, MD, providing a range of HVAC and plumbing services to Western Maryland, Pennsylvania, and West Virginia since 2006, with a commitment to honesty, integrity, exceptional service, and customer satisfaction.
Verified
Active contractor
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A-C Air Care
6126 Rainbow Dr. Elkridge, MD 21075
A-C Air Care LLC is a customer-focused heating and air-conditioning company located in Elkridge, Maryland, offering a range of HVAC services including installation, repair, and maintenance to ensure optimal efficiency and customer satisfaction in Prince Georges, Montgomery, Baltimore Counties, and the DC area.
Verified
B.M.C. Clower Heating & Air Conditioning
8956 Brookville Road Silver Spring, MD 20910
B.M.C. Clower Heating & Air Conditioning is a licensed HVAC contractor based in Silver Spring, MD, providing a range of heating, ventilation, and air conditioning repair and installation services since 1999, with a commitment to customer satisfaction and quality workmanship.
Verified
Diversified HVAC
7615-L Rickenbacker Drive, Gaithersburg, MD 20879
Diversified HVAC is a family-owned business based in Maryland, specializing in commercial heating and air conditioning services since 1990, offering 24/7 HVAC service, repair, installation, and maintenance for a variety of systems including AC units, chillers, boilers, and pumps.
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
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
First Class Mechanical
835 Baltimore Blvd. Westminster, MD 21157
First Class Mechanical is a provider of a full range of plumbing and HVAC services, including emergency well pump replacements, water treatment and conditioning, water testing, and heating and cooling system repairs and replacements for residential and commercial customers in the Baltimore, Maryland area. With over 20 years of experience, they offer licensed plumbers, Master Gasfitters, and HVAC contractors, and have received honorable mentions in Carroll's Best 2023 in three categories.
Verified
Active contractor
Boland
30 W. Watkins Mill Rd. Gaithersburg, MD 20878
Boland is a company that provides HVAC systems, controls, energy services, rental services, water treatment, parts, and supplies, as well as training and consultation for various building needs, with a focus on sustainability and community involvement.
Verified
Active contractor

Anderson Mechanical Services
Overland Dr. #140 Sterling, VA 20166
Anderson Mechanical Services Inc. (AMSI) delivers award-winning service to every project, with our experience, using the best HVAC technologies. Contact Today
Verified
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.
Verified
Active contractor
Air Doctor Heating and Air
6115 Appletown Rd. Boonsboro, MD 21713
Air Doctor Heating and Air is a family-run HVAC company established on June 1, 2013, in Frederick County, MD, offering a range of services including installations, repairs, maintenance, and energy-efficient improvements for residential and commercial clients, backed by a 10-year parts and labor warranty.
Verified
Active contractor
Quick Servant
Columbia, MD 21044
Quick Servant Company, Inc. specializes in commercial HVAC, refrigeration, cooking equipment, and building maintenance services, offering 24/7 emergency response across the Eastern states including Baltimore, Richmond, Virginia Beach, Williamsburg, Washington DC, and Maryland areas. With nearly 40 years of experience, they are known for their reliable service and commitment to customer satisfaction in the food and restaurant industry.
Verified
Good to know insights about HVAC contractors in Frederick, MD
Bidding difficulty
High
Average response time
3 days
Average interest distance
28 miles
Average lead time to bid
16 days
How far are HVAC contractors in Frederick, MD 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 54 bid packages. The ratios of bidding contractors per distance group are 11%, 0%, 0%, and 0%.
How much lead time do HVAC contractors in Frederick, MD 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 38 bid packages. The ratios of bidding projects per due time group are 0%, 0%, and 8%.
Commercial HVAC contractors insights in Frederick, MD
Explore 2331 verified HVAC contractors in Frederick, MD. 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
2331 contractors
Total union contractors
119 union contractors
Total non-union contractors
1650 non-union contractors
Total minority-owned businesses
103 minority-owned businesses
Total women-owned businesses
42 women-owned businesses
What certifications do HVAC contractors hold?
Professional certifications and licenses held by HVAC contractors in Frederick, MD, 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 Frederick, MD 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 Frederick, MD are bidding for, showing which construction firms and developers are most active in the local market.
Gap
Burlington
Hampton
Marriott
Ford
Save A Lot
Four Seasons
Honda
Milestones
HVAC projects insights in Frederick, MD
Explore 128 HVAC construction projects in Frederick, MD. 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
128 projects
Average square footage
5,375 square feet
Maximum square footage
55,480 square feet
What square footage ranges are HVAC projects in?
Distribution of HVAC project sizes in Frederick, MD 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 Frederick, MD, 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
Do I need a HVAC permit for commercial work in Frederick, MD?
Yes. Yes—mechanical (HVAC) permit required.
Where do I apply for HVAC permits, check status, or schedule inspections in Frederick, MD?
How can Downtobid help me find the best commercial HVAC contractors in Frederick, MD?
Downtobid helps you find the best HVAC contractors in Frederick, 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 Frederick, 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 Frederick, 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 Frederick, 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!
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