Top 10 HVAC Companies in Gaithersburg, MD

Porch Pro Headshot Horizon Services Plumbing Heating and Cooling (Services)
HVAC Contractors
Serves Gaithersburg, Maryland
(2,928)
"Excellent service, efficient, dependable, staff courteous, answer your needs in right directions, accommodating technicians had good knowledge on what they were doing. Office staff gives appointment faster."
"Excellent service, efficient, dependable, staff courteous, answer your needs in right directions, accommodating technicians had good knowledge on what they were doing. Office staff gives appointment faster."
Porch Pro Headshot Safe House
HVAC Contractors
Serves Gaithersburg, Maryland
(2,289)
"The technician arrived earlier, after calling to ask if that was okay, which it was. He explained what he was going to do. The whole process did not take long at all, and everything is now clean and safe with my dryer and vent system. Prices are very reasonable. I will use this service again an...Read more about Safe House
"The technician arrived earlier, after calling to ask if that was okay, which it was. He explained what he was going to do. The whole process did not take long at all, and everything is now clean and safe with my dryer and vent system. Prices are very reasonable. I will use this service again an...Read more about Safe House
Porch Pro Headshot Presidential Heating & Air Conditioning, Inc
HVAC Contractors
Serves Gaithersburg, Maryland
(763)
"I have been using Presidential for years and find them helpful, reliable, responsive to emergencies, straightforward and honest with excellent people working for them. My only problem is that they don't seem to have enough people working for them so that my regular Spring/Fall checks up seem not t...Read more about Presidential Heating & Air Conditioning, Inc
"I have been using Presidential for years and find them helpful, reliable, responsive to emergencies, straightforward and honest with excellent people working for them. My only problem is that they don't seem to have enough people working for them so that my regular Spring/Fall checks up seem not t...Read more about Presidential Heating & Air Conditioning, Inc
Porch Pro Headshot Michael Bonsby Heating & Air Conditioning LLC
HVAC Contractors
Serves Gaithersburg, Maryland
(565)
"I hired Michael Bonsby Heating & Air for a complicated electric heat pump replacement with a separate air conditioner and gas furnace that required installing a new vent pipe through finished ceilings. Their sales person was on time, professional and very knowledgable regarding the specific job I n...Read more about Michael Bonsby Heating & Air Conditioning LLC
"I hired Michael Bonsby Heating & Air for a complicated electric heat pump replacement with a separate air conditioner and gas furnace that required installing a new vent pipe through finished ceilings. Their sales person was on time, professional and very knowledgable regarding the specific job I n...Read more about Michael Bonsby Heating & Air Conditioning LLC
Porch Pro Headshot Minnick's
HVAC Contractors
Serves Gaithersburg, Maryland
(791)
Home Performance HVAC company, helping homeowners live in an Efficient Home and Healthy Living
Home Performance HVAC company, helping homeowners live in an Efficient Home and Healthy Living
Porch Pro Headshot Comfort Heating & Cooling
HVAC Contractors
Serves Gaithersburg, Maryland
(460)
Comfort Heating & Cooling service was found in 2007 and I serve as the griddle Washington DC area
Comfort Heating & Cooling service was found in 2007 and I serve as the griddle Washington DC area
Porch Pro Headshot Griffith Energy Services, Inc.
HVAC Contractors
Serves Gaithersburg, Maryland
(171)
For over a century Griffith Energy Services has been the reliable provider of air conditioning and heating services and equipment throughout the Mid-Atlantic region. With 12 convenient locations in Maryland, Delaware, Northern Virginia, Washington DC, and the Eastern Panhandle of West Virginia, we a...Read more about Griffith Energy Services, Inc.
For over a century Griffith Energy Services has been the reliable provider of air conditioning and heating services and equipment throughout the Mid-Atlantic region. With 12 convenient locations in Maryland, Delaware, Northern Virginia, Washington DC, and the Eastern Panhandle of West Virginia, we a...Read more about Griffith Energy Services, Inc.
Porch Pro Headshot HVAC Dynamic  Inc
HVAC Contractors
Serves Gaithersburg, Maryland
(8)
HVAC DYNAMIC HAS BEEN IN BUSINESS FOR MORE THAN FIFTEEN YEARS, WITH THAT EXPERIENCE, WE HAVE FINE-TUNED OUR BUSINESS TO MEET AND EXCEED YOUR NEEDS IN A COST-EFFECTIVE MANNER AND WITH THE BEST TIMES. TAKE A LOOK IN OUR TESTIMONIALS FROM ACTUAL CUSTOMERS AND SEE WHY WE ARE CHOSEN BY HOME OWNERS AND CO...Read more about HVAC Dynamic Inc
HVAC DYNAMIC HAS BEEN IN BUSINESS FOR MORE THAN FIFTEEN YEARS, WITH THAT EXPERIENCE, WE HAVE FINE-TUNED OUR BUSINESS TO MEET AND EXCEED YOUR NEEDS IN A COST-EFFECTIVE MANNER AND WITH THE BEST TIMES. TAKE A LOOK IN OUR TESTIMONIALS FROM ACTUAL CUSTOMERS AND SEE WHY WE ARE CHOSEN BY HOME OWNERS AND CO...Read more about HVAC Dynamic Inc
Porch Pro Headshot Al's Twin Air, LLC
HVAC Contractors
Serves Gaithersburg, Maryland
(17)
Al's Twin Air LLC is a full service company. Specializing in HVAC services for Residential and Commercial properties in the Prince George's County and Washington DC Metropolitan area. We are licensed, bonded and insured. We provide professional, courteous and quality services. Our Service depart...Read more about Al's Twin Air, LLC
Al's Twin Air LLC is a full service company. Specializing in HVAC services for Residential and Commercial properties in the Prince George's County and Washington DC Metropolitan area. We are licensed, bonded and insured. We provide professional, courteous and quality services. Our Service depart...Read more about Al's Twin Air, LLC
Porch Pro Headshot Harvey W Hottel, Inc
HVAC Contractors
Serves Gaithersburg, Maryland
(77)
For reliable heating and air conditioning service, you can count on our experienced technicians to get the job done. Whether you have questions about geothermal heating and air conditioning, or would like to schedule a service call, Harvey W Hottel, Inc are here to help.
For reliable heating and air conditioning service, you can count on our experienced technicians to get the job done. Whether you have questions about geothermal heating and air conditioning, or would like to schedule a service call, Harvey W Hottel, Inc are here to help.

Top questions to ask before hiring an hvac company

What type of insurance do you have? Heating, ventilation and air conditioning (HVAC) professionals work on a variety of mechanical areas of the home. You'll want to ask specific questions regarding professional training and licensing, as well as what types of insurance they have (for example, mold, air pollution or worker's compensation). It's fair to ask for the dollar amounts they are covered and a quality professional will show you verification of coverage.

HVAC professionals attend to a home's thermal needs as well as air quality. Because of the technical aspects of HVAC work, find out the scope of work your professional can perform. You may only need your heating unit serviced however, if this professional also specializes in energy efficiency, mold assessment, or offer ways for you to save on energy costs, you may want to hire them for future projects. Because some equipment is gas-powered, your professional should be able to answer questions about installing gas lines and permitting.

Ask about guarantees on labor or warranties on parts for your HVAC project. It's common to have a time limitation on parts and equipment. Save any paperwork related to your project so you can refer back to instruction manuals or serial numbers.

When working with a heating and cooling professional, ask if their company offers pricing incentives to encourage you to hire them on a regular basis. It's common to have your equipment inspected and serviced at least once a year. Your HVAC company may also offer special pricing on filters, ventilation cleaning or energy assessments.

Regardless of the scope of your project, find out what you need to do to prepare your home for their visit. For example, the HVAC professional will need access to the areas in question and may need access to other mechanical or ventilation points. Make sure pets and children are kept out of the way. Ask if your project will involve removing dry wall or making any other structural changes – you may need to hire a professional drywall contractor to patch up HVAC work. If you are adding a unit that may contribute to carbon monoxide within the home, find out if you need to purchase a carbon monoxide detector.

Recent reviews for Gaithersburg HVAC Contractors

28585

Tech was knowledgeable, friendly, and efficient! I would wholeheartedly recommend this brand to family/friends/anyone in need of residential services. Thanks again Marc

- Jaime Saona
28764

We have had our heating and air conditioning units replaced. The team that came in was very efficient and thorough. I would recommend Horizon Services to my friends an family.

- Tom Leonarski Sr
541122

We are very happy and our house looks fabulous... Thanks guys!

- leona Emmons
28738

My mother passed away last Fall and, while going through her papers, I found paperwork indicating she had purchased a contract for central air conditioner service (buy one, get one free) and had only one service call before she passed away. Since I was se...

28887

I couldn't ask for better service than I've received from Horizon Services. I've had them clear a blocked sewage line and I've had them service our AC system. Both times they arrived precisely when they said they would, did a wonderful job at a reasonab...

- Bridget Back
52016

Just called. for a quote to replace my old dishwasher couldn't give me any prices over the phone. I was just wanting a base price if nothing was wrong to replace the dishwasher would not tell me very frustrating

- Brendan Gierstorfer
38163

When Horizon installed my heater eight years ago I noticed how organized they were. The technicians were knowledgeable and ever since then when I need a repair, I call Horizon because I trust that they will do the job properly.

29115

For the most part Horizon did a nice job tuning up our 12+ year old A/C which we just ended up replacing and had Horizon do the work. The employees were all nice and professional. Clean up was lacking as they used booties but no drop cloths and we had to ...

- Q Watson
541947

Horizon Services offers competitive pricing for their services. While their prices may not be the lowest in the market, they provide excellent value for money. Their technicians are experienced, efficient, and use high-quality materials to ensure long-las...

- Wanda Cook
28600

I purchased central air and heating 9 years ago from Horizon and continue to use Horizon for my yearly maintenance. I have been pleased with the service and the courteous customer service personnel. I recommend to everyone I know. Thank you - Elaine Sc...

- Elaine Schemm
7923

This company is outrageously expensive. Almost bordering on robbery.

38116

We have had Horizon Services out 3 times now and each visit was done just as we expected it too. All of the technicians were knowledgable and all cleaned up, no messes. We had a Plummer out twice and a heater guy out once. I would recommend Horizon to al...

- Sandra Wagner

Everything You Need to Know About Gaithersburg HVAC Companies

Can I browse unscreened HVAC Contractors in Gaithersburg?

We do our best to screen all of our hvac contractors. However, there are still some hvac contractor professionals in Gaithersburg that have not been pre-screened. This means that their licenses may not be up to date to operate in Gaithersburg or MD. Always be sure to pre-screen them yourself before hiring. Here are some unscreened professionals offering hvac:

  • One Hour Heating & Air Conditioning - Baltimore:
    • Active/Verified License: No, current status is inactive
  • AIRBENDERS:
    • BBB Rating: A+
    • Active/Verified License: No, current status is inactive
  • Supreme Air LLC:
    • BBB Rating: A+
    • Active/Verified License: No, current status is inactive

How many hvac contractors does Gaithersburg have?

There are around 50 companies throughout Gaithersburg to help you with your next hvac job.

  • 18 of them have an A or A+ rating from Better Business Bureau.

What should I check for once my HVAC Contractor in Gaithersburg has finished working?

Every hvac project is going to have different results, but here are a few things to check for once any hvac company has told you they've finished the job:

  • Obviously you want to do a visual inspection. Even if you're unfamiliar with hvac work, this gives you the opportunity to ask questions (even basic ones like, what did you do?).
  • Ask the hvac contractor to describe what they did. Whether your hvac project was a repair job or a building job, have them run you through what was done.
  • Compare the description provided on your hvac project estimate to the work completed. Did the professional do what was promised?
  • Request that the hvac contractor do a follow-up visit to check on the work. Most professionals are willing to do this, especially if you ask them.

All HVAC Companies in Gaithersburg, MD

Porch Pro Headshot M&G Climate Control
HVAC Contractors
Serves Gaithersburg, Maryland
(27)
M & G Climate Control can help you take control of your HVAC! We have been serving the Prince George's County area in Maryland and specialize in providing quality and affordable Residential and Commercial HVAC services.
M & G Climate Control can help you take control of your HVAC! We have been serving the Prince George's County area in Maryland and specialize in providing quality and affordable Residential and Commercial HVAC services.
Porch Pro Headshot Eagle services LLC
HVAC Contractors
Serves Gaithersburg, Maryland
Please call us at 855 633 2453 for a free quote Eagle Services Need the services of an expert technician? We are here to help. You can count on us for reliable locksmith service , garage doors, air duct cleaning and carpet cleaning. We are licensed locksmiths and home improvement contractor in ...Read more about Eagle services LLC
Please call us at 855 633 2453 for a free quote Eagle Services Need the services of an expert technician? We are here to help. You can count on us for reliable locksmith service , garage doors, air duct cleaning and carpet cleaning. We are licensed locksmiths and home improvement contractor in ...Read more about Eagle services LLC
Porch Pro Headshot S & C Mechanical Contractors, LLC
HVAC Contractors
Serves Gaithersburg, Maryland
(18)
S & C Mechanical Contractors LLC is a licensed and insured HVAC contractor. We are proud to offer services for both residential and light commercial projects as well as new construction and remodeling projects. We bring experience to projects such as custom duct fabrication, thermostat repairs, boil...Read more about S & C Mechanical Contractors, LLC
S & C Mechanical Contractors LLC is a licensed and insured HVAC contractor. We are proud to offer services for both residential and light commercial projects as well as new construction and remodeling projects. We bring experience to projects such as custom duct fabrication, thermostat repairs, boil...Read more about S & C Mechanical Contractors, LLC
Porch Pro Headshot C. Hoffberger
HVAC Contractors
Serves Gaithersburg, Maryland
There's no better way to heat your home and to provide your family with year-round hot water than with oil heat. And there's no better company you can turn to for all your heating needs than C. Hoffberger/Eastern Energy. As a local business we are a part of your community and as part of the Champio...Read more about C. Hoffberger
There's no better way to heat your home and to provide your family with year-round hot water than with oil heat. And there's no better company you can turn to for all your heating needs than C. Hoffberger/Eastern Energy. As a local business we are a part of your community and as part of the Champio...Read more about C. Hoffberger
Porch Pro Headshot MasterCraft Mechanical Services, LLC
HVAC Contractors
Serves Gaithersburg, Maryland
If you're searching the net for an air conditioning company that will be there any time on any day to give you top-notch service at reasonable rates, you've found us! We service all makes and models for replacement, repair, installation and maintenance services on both residential and commercial pro...Read more about MasterCraft Mechanical Services, LLC
If you're searching the net for an air conditioning company that will be there any time on any day to give you top-notch service at reasonable rates, you've found us! We service all makes and models for replacement, repair, installation and maintenance services on both residential and commercial pro...Read more about MasterCraft Mechanical Services, LLC
Porch Pro Headshot GraniTech Inc.
HVAC Contractors
Serves Gaithersburg, Maryland
For an outdoor lighting company with fast service, knowledgeable technicians, and superior customer service, contact GraniTech Inc. in California.
For an outdoor lighting company with fast service, knowledgeable technicians, and superior customer service, contact GraniTech Inc. in California.
Porch Pro Headshot WILLIAMS & SON MECHANICAL CONSTRUCTION
HVAC Contractors
Serves Gaithersburg, Maryland
(3)
Working with HVAC systems has never been easy. It requires special knowledge of the systems, and sadly, not everyone has the necessary qualification and experience for that. Does your AC system need the services of a professional? If this is so, then Williams & Son Mechanical Construction is the AC ...Read more about WILLIAMS & SON MECHANICAL CONSTRUCTION
Working with HVAC systems has never been easy. It requires special knowledge of the systems, and sadly, not everyone has the necessary qualification and experience for that. Does your AC system need the services of a professional? If this is so, then Williams & Son Mechanical Construction is the AC ...Read more about WILLIAMS & SON MECHANICAL CONSTRUCTION
Porch Pro Headshot Modern Mechanical, LLC.
HVAC Contractors
Serves Gaithersburg, Maryland
(1)
"I have an annual maintenance contract with Modern Mechanical and think they do an amazing job. Their service technicians are wonderful to work with and explain things so clearly. I would recommend Modern Mechanical to anyone. I also LOVE that they give you a 2 hr window instead of others who mak...Read more about Modern Mechanical, LLC.
"I have an annual maintenance contract with Modern Mechanical and think they do an amazing job. Their service technicians are wonderful to work with and explain things so clearly. I would recommend Modern Mechanical to anyone. I also LOVE that they give you a 2 hr window instead of others who mak...Read more about Modern Mechanical, LLC.
Porch Pro Headshot Home-pro , LLC
HVAC Contractors
Serves Gaithersburg, Maryland
Home Pro Air Duct Cleaning has more then 12 years of experience , we do residential & commercial , we use state of art equipment green & natural products , great & affordable prices , and excellent customer service .
Home Pro Air Duct Cleaning has more then 12 years of experience , we do residential & commercial , we use state of art equipment green & natural products , great & affordable prices , and excellent customer service .
Porch Pro Headshot Global Comfort Heating Air Conditioning LLC
HVAC Contractors
Serves Gaithersburg, Maryland
Global Comfort Heating and Air Conditioning offers residential heating and air conditioning installation and repair in Damascus, Maryland, and the DC metro area. Founded in 2008 by 2 former principals of another successful HVAC company, we offer top-notch HVAC services by leveraging our more than 30...Read more about Global Comfort Heating Air Conditioning LLC
Global Comfort Heating and Air Conditioning offers residential heating and air conditioning installation and repair in Damascus, Maryland, and the DC metro area. Founded in 2008 by 2 former principals of another successful HVAC company, we offer top-notch HVAC services by leveraging our more than 30...Read more about Global Comfort Heating Air Conditioning LLC
Porch Pro Headshot KBM Mechanical Service INC
HVAC Contractors
Serves Gaithersburg, Maryland
KBM Mechanical Service is an HVAC contractor based in Rockville. Providing water line installation, water heater installation and other services, they have 8 years of experience.
KBM Mechanical Service is an HVAC contractor based in Rockville. Providing water line installation, water heater installation and other services, they have 8 years of experience.
Porch Pro Headshot HERNANDEZ PLUMBING & MORE
HVAC Contractors
Serves Gaithersburg, Maryland
(1)
Porch Pro Headshot 911 Refrigeration Co Inc.
HVAC Contractors
Serves Gaithersburg, Maryland
Give Alan a call for your HVAC needs. He will be sure to help you out!
Give Alan a call for your HVAC needs. He will be sure to help you out!
Porch Pro Headshot Accel Heating and Cooling LLC
HVAC Contractors
Serves Gaithersburg, Maryland

Latest projects near Gaithersburg

Recent projects booked on Porch
North Potomac 20878
Thermostat Replacement and Repair
Comments from Customer
Need to install a nest thermostat currently there is a programmable thermostat. Heat pump installed.
Gaithersburg 20878
HVAC Inspection
Start Date
Within a week
Purpose
Purchasing property
Inspection type
Heating and cooling
Property type
Condo or townhome
Property size
1,501-2,000 sq ft
Property age
11-20 years
Foundation type
Unknown
Relationship to property
Buyer
Occupied
Yes
Utilities turned on
Yes
Specific services
Mold test, None of the above
Rockville 20850
Thermostat Replacement and Repair
Comments from Customer
Customer did not provide additional comments. Please contact the customer to discuss the details of this project.