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Top-Rated Blown in insulation install or upgrade pros in Alexandria - Updated Nov 2026

Avatar for USA Insulation of Fairfax County
USA Insulation of Fairfax County
5.0(
6
)
Blown-In Insulation - Install or Upgrade

Serving Alexandria, VA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

USA Insulation of Fairfax County provides energy-efficient insulation solutions designed to make homes more comfortable and cost-effective year-round. As part of the trusted USA Insulation network, we specialize in premium injection foam insulation, attic insulation, air sealing, band joist and crawl space solutions. Our team helps homeowners reduce energy loss, lower utility bills, and improve indoor comfort with minimally invasive installation methods. We are committed to quality workmanship, honest recommendations, and outstanding customer service. From consultation to completion, USA Insulation of Fairfax County delivers reliable results that help protect your home and maximize energy savings.

Band Joist
Band Joist
Band Joist
Injection Foam
Injection Foam

+3

23 neighbors recently requested a quote
Avatar for Prudent Homes
Prudent Homes
4.7(
238
)
Blown-In Insulation - Install or Upgrade

Serving Alexandria, VA and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"Following discovery and repair of a roof leak, I needed to have my existing attic insulation removed, and new insulation installed. I received several quotes, and decided to choose Prudent based on David's timely and professional communications, honest appraisal of what the job would entail, and competitive pricing. David and his team did an excellent job throughout the process. They arrived on time, used drop cloths and plastic covers to keep everything clean, walked me through the process and progress, and shared pictures of areas I couldn't easily see or get to myself. At the end of the job, they thoroughly cleaned up all debris and left the house and property as they had found it. We discovered a minor issue later that evening, and David sent a member of the team out to fix it the next day. Excellent communication and work - very happy with the end result, and would hire again in a heartbeat."
29 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for DMV Insulation
DMV Insulation
5.0(
6
)
Blown-In Insulation - Install or Upgrade

Serving Alexandria, VA and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"DMV Insulations is a great company to work with. The company focuses on your personal needs, always on time, and great customer service! Mark was able to answer any questions I had, and provided me with useful information. I would recommend this company to anyone with attic insulation needs."
Fiberglass Blow-in
Sanctuary insulation install.
Save energy, reduce waste, and lower your carbon footprint.
Loose fill insulation install.
Additional Photos

+5

Response time1 day
Response rate100%
7 neighbors recently requested a quote
Avatar for Comfenergy, LLC
Comfenergy, LLC
4.6(
54
)
Blown-In Insulation - Install or Upgrade

Serving Alexandria, VA and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"Comfenergy was very professional thorough from the in-person estimate thru installation. Even though we didnt have a full energy audit, they still go over your entire home and tell you what should and what needs to be done. Some of the little things we did ourselves, or had our handyman. Then Comfenergy did the big part, seal and insulate the attic. We still had late 80's insulation and never a sealing done. It ended up being over an 8 hour project. They were not the cheapest estimate, but definitely the most in-depth review and recommendations provided. The two man team that did the actual work were very professional, showed us the work as the progressed, and good clean up job after all was done."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+68

Response time1 day
Response rate100%
43 neighbors recently requested a quote
Avatar for Discount Energy Services
Discount Energy Services
4.3(
89
)
Blown-In Insulation - Install or Upgrade

Serving Alexandria, VA and surrounding areas

Approved

In business since 1984

Free estimates

Warranties offered

"After my call to Discount Energy Services, I knew who was coming and when to evaluate my attic insulation. The estimate was prepared on-site with pricing. The workers arrived and knew exactly what they were to accomplish, which they confirmed with me. They prepared the entire path with clean drop cloths and created a plastic drape around my attic stairs. The foreman was glad to explain any aspect of the procedure. My attic was upgraded to R-49 and the difference is notable."
Additional Photos
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+2

Response time7 hrs
Response rate100%
22 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
392
)
Blown-In Insulation - Install or Upgrade

Serving Alexandria, VA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Home Genius Exterior just completed phenomenal work at my property!! Windows and insulation done. â … Top notch service from the consultation, to the schedule work, the start of the tear down, the installing and the final clean up. Highly recommend this company for your home service. Thank you for the hard work and service!"
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Attic Insulation

+8

Response time1 day
Response rate100%
1308 neighbors recently requested a quote
Avatar for Koala Insulation of Washington DC
Koala Insulation of Washington DC
5.0(
14
)
Blown-In Insulation - Install or Upgrade

Serving Alexandria, VA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

Here at Koala Insulation of Washington DC, we pride ourselves on our professionalism, as well as our ability to complete every job to the homeowner's total satisfaction. We never leave a job unfinished, or a homeowner not 100% satisfied with our level of service. We handle insulation work in Washington DC and the surrounding areas - Call today! \n \n

Project Photos
Project Photos
36 neighbors recently requested a quote
Avatar for The Fifth Fuel of Virginia, LLC
The Fifth Fuel of Virginia, LLC
4.6(
59
)
Blown-In Insulation - Install or Upgrade

Serving Alexandria, VA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"Superb from start to finish! Installed baffles and an additional 10"+ of blown insulation in our attic. Crew arrived on time, protected all the areas, and did a superb cleanup afterwards. The two crew members were outstanding...and very professional at all times. I would recommend them to anyone! Bob C in Burke, VA"
Response time1 day
3 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Comfenergy
Comfenergy
3.9(
50
)
Blown-In Insulation - Install or Upgrade

Serving Alexandria, VA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"I am so impressed with Comfenergy. The sales rep explained why we only needed to improve the insulation at the top of our unfinished basement walls, not the whole thing as another company recommended. So it was considerably less money than we thought we’d need to do the job. Brent and his assistant arrived on time to do the work and were so quiet that we weren’t inconvenienced in any way. I definitely recommend this company."
Attic before
Attic after
Historic Waterford Home
Historic Plaque
Crawl space before

+6

Response time1 day
114 neighbors recently requested a quote
Recommended by84%of homeowners
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