Get matched with top air conditioning pros in Dumfries, VA

Q: How much does a new air conditioner capacitor cost?

• <div><p>A new air conditioner capacitor will cost less than replacing the entire air conditioner system. While a capacitor itself will cost between $8 and $25, paying a professional to replace an AC capacitor will cost $180 on average. It&rsquo;s not safe to replace an air conditioner capacitor on your own. </p></div>

Q: What AC tonnage do I need for my house?

• <div><p>The general rule of thumb for figuring out <a href="https://www.angi.com/articles/infographic-how-tonnage-affects-your-ac.htm">how much AC tonnage you need</a> in your home is that for every 500 to 600 square feet of space you need to cool, you&rsquo;ll need one ton of AC cooling power. So, a 1,000-square-foot home will need 2 tons of AC power. </p></div>

Q: Can you put an AC unit on the roof?

• <div><p>Yes, you can put an AC unit on the roof of your home or commercial building. For proper installation, you&rsquo;ll need to ensure the roof surface is flat, it&rsquo;s accessible for maintenance and cleaning, and an AC installation pro agreed that your home is a candidate for package units. Don&rsquo;t forget to consider the climate in your area, as homes that experience frequent tropical storms or hurricanes may not benefit from this type of system.</p></div>

Q: How do I know if my AC needs repair?

• <div><p>There are several <a href="https://www.angi.com/articles/troubleshooting-common-air-conditioning-problems.htm">AC unit problems to troubleshoot</a>, but luckily you can identify them by keeping a close eye on your system. Look out for the following signs that your AC needs repair:</p><ul><li><p>Unusual noises during operation</p></li><li><p>AC unit blows warm air</p></li><li><p>AC unit doesn&rsquo;t come on or turn off with temperature changes</p></li><li><p>Strange odors come through the vents</p></li><li><p>AC unit cycles on and off rapidly</p></li><li><p>Indoor air is more humid or less comfortable than usual</p></li><li><p>AC unit keeps tripping your breaker</p></li><li><p>Fan in the outdoor compressor doesn&rsquo;t operate when the AC is on</p></li></ul><p></p></div>

Q: Is it better to oversize or undersize AC?

• <div><p>It&rsquo;s critical to use the right size AC for your space and not go too small or too big. If you purchase an undersized unit, it won&rsquo;t properly cool your house, and it has to work harder to reach the optimal temperature. This will eventually wear your unit out. An oversized unit can spell trouble because it will turn off and on more frequently, which also wears out your AC unit. An oversized unit also causes humidity in the home.</p></div>

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Verified Reviews for Air Conditioning pros in Dumfries, VA

*The Angi rating for Air Conditioning companies in Dumfries, VA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

*The HomeAdvisor rating for Air Conditioning companies in Dumfries, VA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

Last update on May 11, 2026

Reviewed in May 2026
Jimmy and his team are experts in their field. Air Force One has installed an HVAC unit and two Mitsubishi mini splits for us at our home. We own a construction company, so we also hire Air Force One for all of our HVAC needs for our customers. They are always professional, prompt and fairly...
Air Force One Heating & Cooling
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Reviewed in May 2025
Being a MVP customer was time for Heating/Cooling safety inspections. Kevin Stanley was the HVAC Service Tech assigned to the job. He went over a few issues on our older unit he found during his inspection. I never felt pressured to have the work done and so glad he resolved them on the same...
Appleton Campbell
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Reviewed in October 2023
Behold , heating and cooling is timely , professional and reliable . CanÃ¢Â Â t recommend them enough . Knowing theyÃ¢Â Â ll take care of your system problem quickly and with maximum care just gives you peace of mind . Super appreciative of this business !
Behold Heating & Cooling Services
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Reviewed in July 2023
Brian found the problem and had the AC working in minutes. He fully explained the problem for future use. He arrived in less than 2 hours from my original call. Truly 5 star service.
ARS of Virginia
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Reviewed in July 2022
Noticed an immediate improvement in the air quality. Excellent crew. Replaced HVAC resulting in significantly lower cooling bills. Also replaced the Hot Water Heater - much better Highly recommend them for their quality workmanship and products.
F.H. Furr Plumbing Heating AC & Electrical
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Reviewed in April 2022
Adam - Showed up on time for a general maintenance job on my house AC unit. He found the condensation filter needed to be changed, had one in the van and swapped it. He also found the condesation fan was wired incorrectly, fixed that as well. He was all set and done in 45 minutes tops. The man...
Indoor Air Quality Medics
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Reviewed in August 2021
i have been using Shaw for 10 years and they have installed all my AC. i have told them that they do a good service but overcharging. they replace a dual run start device which should cost between $150 to $250 (hardware cost $30) for $500. it is upsetting to see them taking advantage of old...
Shaw Services
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Reviewed in July 2021
Waking up to a hot house is never fun. The builder installed AC unit in my townhome finally called it quits and I had to get an entire new unit. I scheduled three estimates, two with companies and those trucks that everyone sees driving up and down 95 and also with Bill of W E Beavers. Bill was...
W.E. Beavers Jr. Heating & Cooling
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Reviewed in June 2021
The service was great! Anthony was prompt and professional. He was honest and quick as well. I will definitely call him again for future heating/AC needs.
Anthony's Hvac & Home Improvement
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Reviewed in February 2020
Let me start off by saying Fauquier Mechanical and Derek Goff are awesome. Derek is very honest and you can rely on what he tells you. Derek came out to look at my a/c unit. I had 2 rooms that were not cooling at all. Nothing coming out of the vents. It has been this way since the ac was...
Fauquier Mechanical, LLC
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Find Air conditioning pros in Dumfries

Conde Tech Services, LLC

5.0(

206

)

Ductless Mini-split A/C - Install or Replace

Serving Dumfries, VA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"We were having issues with our fireplace. The tech came to our house and was very professional, and quick to find out what the issue was. The price was fair, and we are really happy with the service. Would definitely hire them again for any service related to our AC or our fireplace, highly recommended!"

Response time8 hrs

Response rate92%

Recommended by99%of homeowners

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McCrea Heating & Air Conditioning Services of VA

4.6(

373

)

Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+2 more

Serving Dumfries, VA and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"The quality of the work was great, it is the product I am not sure about. Just had the system put in last year and the mother board needed to be replaced. While it took longer than expected to receive the part, once received, it was replaced the next business day. The technicians were knowledgeable and efficient. They replaced the part and performed the inspection; and explained it all so I could understand what they did (they even replaced the air filter without my asking). I have used this company for over ten years and find their employees willing to help me keep my system running smoothly and efficiently. I highly recommend McCrea of VA for your HVAC needs."

19 neighbors recently requested a quote

Recommended by91%of homeowners

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Magna Tech Temp Air, LLC

4.8(

166

)

Central A/C - Service or Repair

Serving Dumfries, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Quickly diagnosed the central air conditioning system, and gave an estimate on the cost of recharging the refrigerant in the compressor. The system is a 14 year old Carrier unit. Albert also included some sealant that may plug up the slow leak of refrigerant that occurs every 2 years or so. Albert also, showed me how to adjust the damper to control the flow of air to the second and third floors of the house. The other company that arrived wanted to charge me $5,000 to repair the system or close to $7,000 to replace the AC system with new. I intend to call upon Magna Tech Temp Air, Inc when I'm ready to purchase a new HVAC system. Thanks again for taking the time to listen to my concerns. Well done!!!"

Response time3 hrs

11 neighbors recently requested a quote

Recommended by94%of homeowners

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SwiftPro Heating, Cooling & Plumbing

4.8(

)

Central A/C - InstallCentral A/C - Service or Repair

Serving Dumfries, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"I recently had SwiftPro conduct an inspection and assessment of my HVAC system, and am very satisfied with the service. Tyler and Moises were highly professional from start to finish, wearing boot covers to respect my home, and thoroughly explaining their findings. They were efficient, courteous, and took care to ensure everything was done to a high standard. I will likely be using them to replace my entire furnace and air conditioning unit. I highly recommend SwiftPro for anyone in need of trustworthy and quality HVAC services!"

+11

Response time3 hrs

Response rate91%

154 neighbors recently requested a quote

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TC HVAC Services, LLC

5.0(

)

Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Dumfries, VA and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Super fast, reliable and efficient!!! T was at my house in less than 10 min after we talked over the phone. My AC broke and house was super hot. T even brought his portable AC and temporary installed it I m my bedroom until he replaced the unit. Highly recommend. Knowledgeable and professional"

fully installation entire house duct with system

+99

Response time3 hrs

Recommended by100%of homeowners

Central A/C - Service or RepairCentral A/C - Install

Serving Dumfries, VA and surrounding areas

Approved (Corporate)

In business since 1950

Free estimates

Emergency services offered

"ARS is awesome. I would highly recommend them for anyone looking for heating or cooling installation or repair."

321 neighbors recently requested a quote

Recommended by80%of homeowners

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Consumer's Choice, Inc.

4.1(

)

Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Dumfries, VA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Consumers Choice has been my go to hvac contractor for 8 years. Recently, I had a leak in the closed loop water source that feeds into my hvac. CC replaced hoses and valves and got cool air going again. I never call anyone else."

Recommended by96%of homeowners

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Dominion Service Heat and Air

4.1(

183

)

Central A/C - Service or Repair

Serving Dumfries, VA and surrounding areas

Approved

In business since 1994

Emergency services offered

Warranties offered

"Dominion Services did a great job installing our new HVAC system. They worked with us to help determine the best system for our home and budget. Excellent and friendly service, install and follow-up. Superb customer service and at a great price. I recommend them for all your HVAC needs."

Response time2 hrs

37 neighbors recently requested a quote

Recommended by85%of homeowners

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C&C Home Services, LLC

4.5(

410

)

Air Ducts & Vents - Clean

Serving Dumfries, VA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"Scheduled service for the next day, came on time and did a great job cleaning my air ducts and vents and the dryer vent."

+17

Response time20 mins

Recommended by95%of homeowners

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The Best Air Quality and Restoration

4.8(

236

)

Air Ducts & Vents - Clean

Serving Dumfries, VA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Best Air Quality and Restoration did a spectacular job! I can't say enough about the employees. They did an outstanding job! They were punctual,polite and followed social distancing protocols.They assessed the home and cleaned the air ducts quickly and efficiently. I am very pleased with their service and highly recommended this company. I purchased a new home and had them come clean the ducts to improve the homes environment. They showed me before and after pictures and I noticed a difference right away"

+50

Recommended by93%of homeowners

Request Quote

...

Showing 1-10 of 374

Air Conditioning questions, answered by experts

A new air conditioner capacitor will cost less than replacing the entire air conditioner system. While a capacitor itself will cost between $8 and $25, paying a professional to replace an AC capacitor will cost $180 on average. It’s not safe to replace an air conditioner capacitor on your own.

The general rule of thumb for figuring out how much AC tonnage you need in your home is that for every 500 to 600 square feet of space you need to cool, you’ll need one ton of AC cooling power. So, a 1,000-square-foot home will need 2 tons of AC power.

Yes, you can put an AC unit on the roof of your home or commercial building. For proper installation, you’ll need to ensure the roof surface is flat, it’s accessible for maintenance and cleaning, and an AC installation pro agreed that your home is a candidate for package units. Don’t forget to consider the climate in your area, as homes that experience frequent tropical storms or hurricanes may not benefit from this type of system.

There are several AC unit problems to troubleshoot, but luckily you can identify them by keeping a close eye on your system. Look out for the following signs that your AC needs repair:

Unusual noises during operation
AC unit blows warm air
AC unit doesn’t come on or turn off with temperature changes
Strange odors come through the vents
AC unit cycles on and off rapidly
Indoor air is more humid or less comfortable than usual
AC unit keeps tripping your breaker
Fan in the outdoor compressor doesn’t operate when the AC is on

It’s critical to use the right size AC for your space and not go too small or too big. If you purchase an undersized unit, it won’t properly cool your house, and it has to work harder to reach the optimal temperature. This will eventually wear your unit out. An oversized unit can spell trouble because it will turn off and on more frequently, which also wears out your AC unit. An oversized unit also causes humidity in the home.

The Dumfries, VA homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

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•
May 5, 2026May 5, 2026
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•
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•
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•
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•
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•
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What Is a Mini Split System and How Does It Work?
Mini split systems are an energy-efficient option to regulate your house’s temperature. Learn more about how mini splits work to cool or heat your home.