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Comfenergy, LLC
Comfenergy, LLC
Over 20 years of experience in the home comfort and efficiency field. We find solutions to the issues that your HVAC company can't. Dusty homes, hot and cold spots, high utility bills, drafty fireplaces, rooms above garages, cold floors, dirty carpet edges, and much more can be fixed by us. We provide "comfort and energy solutions".
"A total disaster. An inexperienced, untrained crew created more issues than I had before they began their work. My goal was to increase comfort levels in my senior-living, one-level home built on a slab that is super cold in the winter. I hate as a senior being taken advantage of. I was very naive. I have spent thousands and now am having to throw more good money after bad to try and make my home comfortable to live in. It is so bad; I am ready to sell! And I can’t afford to after all I have spent, without taking a loss on the sale. They dense packed my walls and now I am colder; in the process, they removed the flashing above my windows which now leak. I had to hire a window installer to replace the flashing that their incompetent crew removed. They failed to put back the siding properly, so it was hanging off my house. Once again, I had to hire a handy man to refasten the siding the crew removed while dense packing. And the dense packing was useless as it didn't enter the cavities that already had batt insulation. While spray foaming triangle boxes, boots, and plenum, they sealed off all my dampers resulting in zero air flow. They reluctantly came back and had to dig out the dampers that they had foamed over. In fact, they over-foamed at junction boxes, boots, and plenum so that HVAC techs couldn't even tune my system. There is 2 feet of foam, yet hot air is rushing out of the flexible ducts that weren’t sealed properly. Yet there remain gaps on my boxes, boots, and plenum. Just today, a HVAC tech walked me around the attic, and I could feel the hot air rushing into my attic at the junctions, boxes, boots, and plenums that are all wide open; that I paid to have sealed. I almost threw up; I am heating my attic! And the tech said it looks like a dog was in my attic as the Comfenergy crews failed to put back my blown-in fiberglass insulation they removed when trying to foam, so there is no insulation at the boxes and boots. They were simply careless and failed to rake it back and even out my insulation resulting in further cold spots I didn't have. In short, I now will have to hire another company to blow in more insulation and make sure it is even, so I don't have cold/hot spots. Additionally, they left the lights on in the attic, didn't replace the attic access foam barrier, and failed to seal the major penetrations including light cans/recessed lights and supply vents I paid for. Next came the bathroom exhaust fans; they were installed improperly and didn't vent because the outside flaps remained closed, while inside a cold draft came in my bathroom because the foam sealing, I paid for wasn't done properly. So now both my bathrooms are drafty. They were cold; now they are cold AND drafty. The HVAC tech today remarked he felt badly that I have two or more space heaters in every room, including the bathrooms! I strongly recommend carefully watching the crew if you ever choose to allow them to do any work for you. I trusted them. And I regret that. I was naive. I was cold. Rather I am still cold! I trusted their salesperson. The crew that did mine were either let go or quit. In fact, one of them still calls seeking to do side work. I politely declined. I suggest you do the same and seek a competent company that you can trust, does the work you paid for properly, and doesn't damage your home."
Charles K on November 2022
Over 20 years of experience in the home comfort and efficiency field. We find solutions to the issues that your HVAC company can't. Dusty homes, hot and cold spots, high utility bills, drafty fireplaces, rooms above garages, cold floors, dirty carpet edges, and much more can be fixed by us. We provide "comfort and energy solutions".
"A total disaster. An inexperienced, untrained crew created more issues than I had before they began their work. My goal was to increase comfort levels in my senior-living, one-level home built on a slab that is super cold in the winter. I hate as a senior being taken advantage of. I was very naive. I have spent thousands and now am having to throw more good money after bad to try and make my home comfortable to live in. It is so bad; I am ready to sell! And I can’t afford to after all I have spent, without taking a loss on the sale. They dense packed my walls and now I am colder; in the process, they removed the flashing above my windows which now leak. I had to hire a window installer to replace the flashing that their incompetent crew removed. They failed to put back the siding properly, so it was hanging off my house. Once again, I had to hire a handy man to refasten the siding the crew removed while dense packing. And the dense packing was useless as it didn't enter the cavities that already had batt insulation. While spray foaming triangle boxes, boots, and plenum, they sealed off all my dampers resulting in zero air flow. They reluctantly came back and had to dig out the dampers that they had foamed over. In fact, they over-foamed at junction boxes, boots, and plenum so that HVAC techs couldn't even tune my system. There is 2 feet of foam, yet hot air is rushing out of the flexible ducts that weren’t sealed properly. Yet there remain gaps on my boxes, boots, and plenum. Just today, a HVAC tech walked me around the attic, and I could feel the hot air rushing into my attic at the junctions, boxes, boots, and plenums that are all wide open; that I paid to have sealed. I almost threw up; I am heating my attic! And the tech said it looks like a dog was in my attic as the Comfenergy crews failed to put back my blown-in fiberglass insulation they removed when trying to foam, so there is no insulation at the boxes and boots. They were simply careless and failed to rake it back and even out my insulation resulting in further cold spots I didn't have. In short, I now will have to hire another company to blow in more insulation and make sure it is even, so I don't have cold/hot spots. Additionally, they left the lights on in the attic, didn't replace the attic access foam barrier, and failed to seal the major penetrations including light cans/recessed lights and supply vents I paid for. Next came the bathroom exhaust fans; they were installed improperly and didn't vent because the outside flaps remained closed, while inside a cold draft came in my bathroom because the foam sealing, I paid for wasn't done properly. So now both my bathrooms are drafty. They were cold; now they are cold AND drafty. The HVAC tech today remarked he felt badly that I have two or more space heaters in every room, including the bathrooms! I strongly recommend carefully watching the crew if you ever choose to allow them to do any work for you. I trusted them. And I regret that. I was naive. I was cold. Rather I am still cold! I trusted their salesperson. The crew that did mine were either let go or quit. In fact, one of them still calls seeking to do side work. I politely declined. I suggest you do the same and seek a competent company that you can trust, does the work you paid for properly, and doesn't damage your home."
Charles K on November 2022

HomeGuard Foam & Foundation
HomeGuard Foam & Foundation
Build a stronger, more comfortable home with HomeGuard Foam and Foundation! We're dedicated to providing homeowners with energy-efficient and lasting solutions. Specializing in spray foam insulation, crawl space encapsulation, basement waterproofing, and foundation repair, we protect your property from the ground up. Trust HomeGuard to fortify your foundation and insulate your future, ensuring a cozy and durable home for years to come.
"It was fine. They were prompt and gave me an estimate on the spot when they did the inspection. They came the next week or several days after and put in everything. I'll give them 5 stars but they never get back to me until now. It depends if depends if I'm going to use them again if they get back at me and answer all the questions that I have."
sharlene d on May 2021
Build a stronger, more comfortable home with HomeGuard Foam and Foundation! We're dedicated to providing homeowners with energy-efficient and lasting solutions. Specializing in spray foam insulation, crawl space encapsulation, basement waterproofing, and foundation repair, we protect your property from the ground up. Trust HomeGuard to fortify your foundation and insulate your future, ensuring a cozy and durable home for years to come.
"It was fine. They were prompt and gave me an estimate on the spot when they did the inspection. They came the next week or several days after and put in everything. I'll give them 5 stars but they never get back to me until now. It depends if depends if I'm going to use them again if they get back at me and answer all the questions that I have."
sharlene d on May 2021

Paul Henry's Window Installation Inc
Paul Henry's Window Installation Inc
Paul Henry’s Window Installation installs superior-quality energy-efficient:Windows, Doors, Siding, Decks, Gutters, Roofs & Attic Insulation. Our products and services will beautify your home and dramatically reduce your home heating and cooling costs. Paul Henry and his installation crew have more than 30 years' experience providing home remodeling services to Northern Virginia homeowners.
"From the estimate to the installation Paul and his crew were awesome. My wife and I were very nervous about the preparation we had to perform, curtains down, furniture moved etc. We also expected some drywall and paint damage. We're both older so this was a huge albatross and as such we kept putting it off. We finally decided to bite the bullet and get it done so I asked Brian Henry if he could come out to review my furniture moving plan to assure we gave them the required space. He came out and was extremely professional, helpful and put us completely at ease. Several weeks later Brad and James were out to install the windows and three days later were done with absolutely zero damage to drywall or paint. And in fact since the bay windows were primed they didn't even need painting although we'll do it anyway. To top it off, they even protected our landscape in front of our widows and all plants survived. Brad and James were polite and meticulous with the installation. They covered everything up inside our house and put down extra thick tarps. They were punctual in starting each day and finishing. They patiently answered all our questions addressing our concerns. And they were complete in 3 days as we were told. Once they were gone, you couldn’t tell they’d even been here. In fact, I looked around and commented to my wife that we’d never spent so much money on something we couldn’t even see. To be clear the windows looked almost identical to those that were removed except for these being brand new. I do expect our electric bill will be reduced and I suspect they will be a good selling point when we move. Finally, the cost was very fair, I had reached out to two other firms and both were substantially higher. The original windows had also been installed by Paul Henry so I was very comfortable even though his costs was lower. Bottom line, we highly recommend Paul Henry Windows."
bill b on December 2024
Paul Henry’s Window Installation installs superior-quality energy-efficient:Windows, Doors, Siding, Decks, Gutters, Roofs & Attic Insulation. Our products and services will beautify your home and dramatically reduce your home heating and cooling costs. Paul Henry and his installation crew have more than 30 years' experience providing home remodeling services to Northern Virginia homeowners.
"From the estimate to the installation Paul and his crew were awesome. My wife and I were very nervous about the preparation we had to perform, curtains down, furniture moved etc. We also expected some drywall and paint damage. We're both older so this was a huge albatross and as such we kept putting it off. We finally decided to bite the bullet and get it done so I asked Brian Henry if he could come out to review my furniture moving plan to assure we gave them the required space. He came out and was extremely professional, helpful and put us completely at ease. Several weeks later Brad and James were out to install the windows and three days later were done with absolutely zero damage to drywall or paint. And in fact since the bay windows were primed they didn't even need painting although we'll do it anyway. To top it off, they even protected our landscape in front of our widows and all plants survived. Brad and James were polite and meticulous with the installation. They covered everything up inside our house and put down extra thick tarps. They were punctual in starting each day and finishing. They patiently answered all our questions addressing our concerns. And they were complete in 3 days as we were told. Once they were gone, you couldn’t tell they’d even been here. In fact, I looked around and commented to my wife that we’d never spent so much money on something we couldn’t even see. To be clear the windows looked almost identical to those that were removed except for these being brand new. I do expect our electric bill will be reduced and I suspect they will be a good selling point when we move. Finally, the cost was very fair, I had reached out to two other firms and both were substantially higher. The original windows had also been installed by Paul Henry so I was very comfortable even though his costs was lower. Bottom line, we highly recommend Paul Henry Windows."
bill b on December 2024

Creators of Total Comfort Mechanical Inc
Creators of Total Comfort Mechanical Inc
COTC Mechanical Inc was founded in 2010 by natives of the Washington DC area. We are still considered a small business by SBA standards, and take pride in being able to provide great customer service. We strive to respond quickly, and provide immediate solutions. We are a service based contractor, so we want to develope ongoing relationships with our clients, which result in reviews and referrals. And we understand that providing exceptional service is the first step in that process. We do not ever subcontract any work or projects. And we also provide financing on residential system replacements.
"Work went well. Switched from my old maintenance agreement since they increased the price each year. CTMC does not do this, and come twice a year rather than once (for AC then heat)"
Patrica M on August 2019
COTC Mechanical Inc was founded in 2010 by natives of the Washington DC area. We are still considered a small business by SBA standards, and take pride in being able to provide great customer service. We strive to respond quickly, and provide immediate solutions. We are a service based contractor, so we want to develope ongoing relationships with our clients, which result in reviews and referrals. And we understand that providing exceptional service is the first step in that process. We do not ever subcontract any work or projects. And we also provide financing on residential system replacements.
"Work went well. Switched from my old maintenance agreement since they increased the price each year. CTMC does not do this, and come twice a year rather than once (for AC then heat)"
Patrica M on August 2019

A+ Handyman
A+ Handyman
A+ Handyman has been in business, offering dependable service, for over 20 years locally. Have a piece of mind and rest assured you will receive top notch, honest and friendly service. Call today to get your free estimate and be sure to ask about our Preventative Maintenance Program --- we have a plan for every budget, home and business. In the unlikely event that you need a service we do not provide, we can give you a exceptional referral.
"There team was amazing and very prompt.... they repaired my leak then waited to make sure they fixed it properly and then came back out and did the drywall repair.... excellent Company"
Krystal S on October 2018
A+ Handyman has been in business, offering dependable service, for over 20 years locally. Have a piece of mind and rest assured you will receive top notch, honest and friendly service. Call today to get your free estimate and be sure to ask about our Preventative Maintenance Program --- we have a plan for every budget, home and business. In the unlikely event that you need a service we do not provide, we can give you a exceptional referral.
"There team was amazing and very prompt.... they repaired my leak then waited to make sure they fixed it properly and then came back out and did the drywall repair.... excellent Company"
Krystal S on October 2018

Environmental Pest Control
Environmental Pest Control
Locally owned & operated. Serving DC, MD, VA, WV. Free estimates & inspections for pest control, wildlife removal, and insulation services.
"It went fantastic! Environmental Pest Control had to come out 9 additional times over a 3 month course, after the initial set-up, because the bats continued entering in different locations of our attic. The technicians were always friendly, knowledgeable, and on time! It's been over a year now and the bats have NOT returned. We highly recommend Environmental Pest Control - some of the best money we ever spent!"
Joni C on October 2021
Locally owned & operated. Serving DC, MD, VA, WV. Free estimates & inspections for pest control, wildlife removal, and insulation services.
"It went fantastic! Environmental Pest Control had to come out 9 additional times over a 3 month course, after the initial set-up, because the bats continued entering in different locations of our attic. The technicians were always friendly, knowledgeable, and on time! It's been over a year now and the bats have NOT returned. We highly recommend Environmental Pest Control - some of the best money we ever spent!"
Joni C on October 2021

ARS / Rescue Rooter Manassas
ARS / Rescue Rooter Manassas
For fast and exceptional service for all of your heating, cooling or plumbing needs, call us now: 703-592-9182. ARS is a leading brand of American Residential Services, LLC. We provide heating, air conditioning, indoor air quality, efficient attic systems and plumbing services throughout Northern Virginia, including Manassas, Alexandria and Fairfax. United by exceptional service, we serve thousands of residential customers from our location in Northern Virginia. You can always count on exceptional service, backed by a knowledgeable team of trained specialists who have the professional experience to do any job right - the first time. Our courteous HVAC technicians are available 24/7 to provide you with expert service and repair. Our Comfort Advisors are ready to help you make the most effective installation or replacement decisions based on your home comfort needs. When a team member from our company visits your home, you can rest assured that they have passed national background and drug tests, and are equipped to provide you with the service you need. In addition to our Exceptional Service Guarantee and providing you only with the utmost in professionalism, we also treat you and your property with respect: we call before we arrive, we providing honest and upfront estimates before any work is done, and we take care of your home by using shoe covers and drop cloths as needed. If you are an existing customer, we thank you for your continued support and business. If you are a new customer considering our company, we encourage you to let us show why we are one of the leading heating and cooling services providers in Manassas, Fairfax, Alexandria, VA and throughout Northern Virginia! License # 2705059347A, WV034354
"I contracted ARS Rescue Rooter about 2.5 years ago to replace my existing HVAC system with a new unit My contract clearly states that the new system would be covered for all parts and labor for 10 years a a week later it was evident the unit did not have sufficient capacity to cool my TH. countless calls over the following 5 weeks, under threat of a law suite, ARS agreed to replace the unit with a more powerful. 2 weeks later they finally sent in two techs who removed and installed a different unit that seemed to work okay. later, I detected a gas leak emanating from my attic where the HVAC is installed. After several calls they finally sent a tech who insisted to charge me for covered work under my warrantee. Eventually, ARS waved charges. now the thermostat is dead, once again ARS said they'd charge me, I asked to have a manger/owner call me and confirm the work is covered before sending a tech. once again ARS said they'll charge me This is a dishonest company with horrible service "
Joseph S on October 2025
For fast and exceptional service for all of your heating, cooling or plumbing needs, call us now: 703-592-9182. ARS is a leading brand of American Residential Services, LLC. We provide heating, air conditioning, indoor air quality, efficient attic systems and plumbing services throughout Northern Virginia, including Manassas, Alexandria and Fairfax. United by exceptional service, we serve thousands of residential customers from our location in Northern Virginia. You can always count on exceptional service, backed by a knowledgeable team of trained specialists who have the professional experience to do any job right - the first time. Our courteous HVAC technicians are available 24/7 to provide you with expert service and repair. Our Comfort Advisors are ready to help you make the most effective installation or replacement decisions based on your home comfort needs. When a team member from our company visits your home, you can rest assured that they have passed national background and drug tests, and are equipped to provide you with the service you need. In addition to our Exceptional Service Guarantee and providing you only with the utmost in professionalism, we also treat you and your property with respect: we call before we arrive, we providing honest and upfront estimates before any work is done, and we take care of your home by using shoe covers and drop cloths as needed. If you are an existing customer, we thank you for your continued support and business. If you are a new customer considering our company, we encourage you to let us show why we are one of the leading heating and cooling services providers in Manassas, Fairfax, Alexandria, VA and throughout Northern Virginia! License # 2705059347A, WV034354
"I contracted ARS Rescue Rooter about 2.5 years ago to replace my existing HVAC system with a new unit My contract clearly states that the new system would be covered for all parts and labor for 10 years a a week later it was evident the unit did not have sufficient capacity to cool my TH. countless calls over the following 5 weeks, under threat of a law suite, ARS agreed to replace the unit with a more powerful. 2 weeks later they finally sent in two techs who removed and installed a different unit that seemed to work okay. later, I detected a gas leak emanating from my attic where the HVAC is installed. After several calls they finally sent a tech who insisted to charge me for covered work under my warrantee. Eventually, ARS waved charges. now the thermostat is dead, once again ARS said they'd charge me, I asked to have a manger/owner call me and confirm the work is covered before sending a tech. once again ARS said they'll charge me This is a dishonest company with horrible service "
Joseph S on October 2025

Virginia Basement
Virginia Basement
Additional service areas - powhatan, prince george, richmond city. See website for additional services offered. Additional DBA - BFH Enterprises Inc.
Additional service areas - powhatan, prince george, richmond city. See website for additional services offered. Additional DBA - BFH Enterprises Inc.

Perma Treat Pest Control
Perma Treat Pest Control
PermaTreat Pest Control, a member of the National Pest Management Association, has served industrial, commercial, government and residential customers in the Central and Northern Virginia areas since 1967. PermaTreat is one of the largest pest control companies in Virginia, utilizing Integrated Pest Management practices in order to protect health, home and the environment. PermaTreat is also a proud member of the Virginia Pest Management Association, a trade association who’s mission is to proactively promote and uphold the professional and ethical standards which will result in quality business practices to the benefit of it’s membership and the general public in the Commonwealth of Virginia.
"Terrible company. They are not upfront about cost of services and tack on additional fees without informing you. This is a company that is only after the money and hook you into a contract. The product is not even very effective. I have watched them perform the service via my home security system while I have been away and the yard guard is a joke. They casually apply it around the perimeter of your home, but isn't it intended to guard your entire yard? This company is a joke. Never again."
Jenny F on October 2022
PermaTreat Pest Control, a member of the National Pest Management Association, has served industrial, commercial, government and residential customers in the Central and Northern Virginia areas since 1967. PermaTreat is one of the largest pest control companies in Virginia, utilizing Integrated Pest Management practices in order to protect health, home and the environment. PermaTreat is also a proud member of the Virginia Pest Management Association, a trade association who’s mission is to proactively promote and uphold the professional and ethical standards which will result in quality business practices to the benefit of it’s membership and the general public in the Commonwealth of Virginia.
"Terrible company. They are not upfront about cost of services and tack on additional fees without informing you. This is a company that is only after the money and hook you into a contract. The product is not even very effective. I have watched them perform the service via my home security system while I have been away and the yard guard is a joke. They casually apply it around the perimeter of your home, but isn't it intended to guard your entire yard? This company is a joke. Never again."
Jenny F on October 2022

GNS Roofing Corp
GNS Roofing Corp
Look no further for all of your roofing needs!! We specialize in all types of roofing, no job is too big or too small. We bring our quality oriented staff to every project and will work with you to make sure all of your plans and needs are met. We provide outstanding quality work at an affordable price. We are an honest and reliable company that is always on time and have been in business for 17 years. We look forward to working with you and make you 200% satisfied!!! Military discounts.
"Jose and his crew did a great job. They gave me the best price and completed the job on time. I would recommend them to anyone."
RICH H on April 2023
Look no further for all of your roofing needs!! We specialize in all types of roofing, no job is too big or too small. We bring our quality oriented staff to every project and will work with you to make sure all of your plans and needs are met. We provide outstanding quality work at an affordable price. We are an honest and reliable company that is always on time and have been in business for 17 years. We look forward to working with you and make you 200% satisfied!!! Military discounts.
"Jose and his crew did a great job. They gave me the best price and completed the job on time. I would recommend them to anyone."
RICH H on April 2023
The Linden, VA homeowners’ guide to insulation services
From average costs to expert advice, get all the answers you need to get your job done.

Crawl space insulation costs vary by size, insulation type, and material. Read this guide to learn how much your crawl space insulation could cost.

Find out the average pipe insulation cost, including material and labor prices, plus tips to save money on your project.

Wool insulation offers a higher R-value than fiberglass but is more expensive. Use this guide to estimate wool insulation costs for your home.

It’s important to know when to use R13 versus R15 insulation to maximize temperature control and energy savings. Learn more about each of these popular insulation options.

Crawl spaces are more than a small, uninhabitable space beneath your home. Learn how insulating your crawl space can make the area useful.

If you are planning to add insulation to your home, you’re likely wondering: what R-value do I need? Our guide explains what you need to know to insulate your home properly.
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