Responded quickly and handled all the Xcel rebate--they even deducted it from the invoice so we…read moredidn't need to lay out more $$ and then wait for the rebate. We previously got a quote from a company that was really hard to get through to. When I finally got that estimate, it was twice what Insulation Nation quoted us, and we would have had to submit to Xcel itself. The employees that arrived were professional, helpful, courtous, and highly competent. I recommend!

Fair pricing and Josh and the crew that went out were professional and polite. Appreciate the…read moreballpark estimate before coming out to give a quote.

When I reached out in May for an attic insulation project estimate, Francisco was so responsive and…read moreset up a time to stop by and take care of the estimate within a day. Unlike some of the businesses we'd contacted, he did more than pop his head into our attic space and give us a cost. He carefully examined our attic space so that he could not only gauge how much insulation we needed but also how to best air seal the attic to increase the insulation efficiency. His final quote for the project was reasonable, and we arranged for a date and time for the project to occur. Not only was the crew on time, they completed the project as promised and were respectful of our living space, doing their best to minimize attic dust and grime from escaping into the main floor where we live. Thank you, Francisco, and your crew for completing the project on time, as promised. Your professionalism and commitment to seeing a project through successfully speaks volumes about your business. I wish you all the best and have already recommended you to other people I know who are in the market for home insulation.

John and his crew did outstanding job. Could not be happier. Communications and overall customer…read moreservice were great. Would highly recommend!

Juan understands the struggle and offers tip quality service for the best price, highly recommendedread more

I reached out to Denver Insulation through Yelp for a quote, and got a response quickly from Juan…read more We scheduled an appointment for Saturday at 9:30am which was confirmed by Juan (photo uploaded). No one called, showed up, responded to my call or texts after. This was a massive disappointment and waste of my time. I will take my business elsewhere.

Guardian helped us with a huge insulation project this past week and they were fantastic. We live…read morein an older ranch that had very minimal to no insulation and we were struggling with heating and cooling our home for many years. After shopping around they were able to give us exactly what we needed and we already notice a difference with the mini heat wave that we are having currently here in Denver.Scheduling was relatively easy and we were able to get on the calendar within a month. Pricing was competitive and they offered to price matching should we find another company that we liked. Other companies, however did not offer as many services for the amount that we paid. Guardian is also filing our upgrade with Xcel energy so that we get all the offered rebates that we don't have to do that ourselves, which is definitely a nice touch. The installers arrived in a timely manner, and were done within one day with a job that was estimated to take two. They also kept things tidey and cleaned up once finished. We also had a ton of questions and Brian, who helped us, was always able to reply and patiently explain things. He was incredibly flexible with planning to our unique situation, and was very knowledgeable. From the beginning, he gave us a bunch of literature, as well as testimonials, and a résumé for the company which definitely put us at ease at the level of experience that was held by Guardian. I would absolutely recommend Guardian for any insulation needs that you may have for your home; And I wish I could say that we would use them again, but I think that our problem is thankfully solved all thanks to them.

I requested a quote from several companies, the first one didn't even take any measurements or look…read moreinto the attic and gave me a quote. Then next one that came looked in the attic and took measurements before giving a quote. When Brian with Guardian Insulation arrived, he took the time to understand why we wanted insulation. He explained the work they would perform, even sealing all places, like electric line holes in the walls to prevent air leaking in or out of the house. He showed how this would apply for a rebate Excel Energy, and we received a $600.00 rebate too. They also provided an energy audit checking for air leaks in the house, before and after the work. The price was competitive with the other companies and the work was performed in a professional manner, cleaning up before they left. I would highly recommend this business.

NetZero was a tiny bit more expensive but by far worth every penny. They were thorough,…read moreprofessional and easy to work with. The work was completed on time and we can't believe the change in the comfort of our house. They took the time to prep everything and protect our belongings. The crew was polite and friendly. We highly recommend them.

NetZero did a thorough job replacing our home's attic insulation. We contacted them initially to…read moreset up a quote and Sean came out to see the home. Despite not having attic access Sean properly assessed the current inadequate insulation and prescribed a reasonable plan to address the situation. Within 24 hours I received a quote where local Xcel rebates were already applied and would be handled by NetZero. Their quote was in line with other businesses but I felt assured by the thoroughness of Sean's walk-through and the details of the job we discussed. We set up the job for two weeks later. Sean arrived with his crew right on schedule in the morning. He reviewed the work with the crew and lead and reviewed everything again with me. The crew laid down floor protection and covered up furniture and equipment in the room where they were working. Throughout the day the crew lead, DJ, was communicative and friendly and everyone was working like crazy. A little after midday they had completed the work and walked me through everything they'd done in detail by showing me pictures of all the sealing, duct connecting, foam, and blow-in insulation they added. The work looked sharp and thorough. I was worried that there'd be some clean-up, especially since they were cutting two attic access points, but when they left everything looked as clean as before they arrived. Even the work on the attic access cuts was clean and looks good. Finally, immediately we've been able to tell the difference with our home holding temperatures much more steadily. We used to fall into the 50s every night and now the house holds a much higher average temperature. We can already see lower usage on our utilities online tracking and the furnace kicks on much less often. Highly recommend NetZero insulation! Thank you Sean, Ryan, DJ and team.

The initial sales visit was professional, and thorough without wasting time. The visit to add…read morespray insulation into my exterior walls was great. The team ran into some problems that were outside of their control and handled them extremely well. The spray makes a mess but they covered beforehand, and then cleaned up very well afterwards. Re cost, I obtained seven estimates. Only two came in cheaper, and I those estimators did not leave me with a good level of confidence that they would have quality work.

Absolutely horrible customer service and a very disappointing experience…read more During an energy audit, my hardwood floor was damaged. I also discovered that the technician moved my security camera from the window to a table without asking. This was captured on my security footage. When I raised these concerns with management, I felt they were dismissed. The manager told me he believed the technician's account over mine despite the video I provided. I also informed him that I intended to leave an online review. During our conversation, he responded by saying, "I'll sue you for defamation." And, " I can't wait to see everyone on Reddit laugh at you" That response made me question whether customers feel comfortable leaving honest negative reviews after receiving that kind of warning. Based on my experience, I cannot recommend this company. I encourage anyone hiring these contractors to have security cameras and to document the condition of their home before and after service. In my opinion, moving a customer's security camera without permission is a serious security concern. Xcel's website has a list of companies you should use I'll provide a list below. With only 140 reviews on google and 21 on yelp the business has been in business for 17 years he says. Yea a lot of people love your business

I contacted JD Insulation for a quote for some tricky insulation work causing a terrible draft on…read moreone side of my house. They were on the job 3 days later and I'm proud to say my house is now draft free as a result of both the outside and inside insulating they performed. They are quick, professional, courteous and VERY reasonable. I highly recommend JD Insulation to anyone!

We had a very good experience with this company. The owner traveled a bit to give us for a site…read morevisit and a free estimate for insulating our attic. He viewed the attic and gave us a detailed explanation of what they could do for us, as well as a good firm price for blown insulation. A week later the workers were there and did a great job. They left the house as clean as it was before the work was performed. We were shown several before and after photos before they left since our attic is difficult to get into. Nice folks and highly recommended.

Called and made an appointment to have the owner, Dustin, come to give an estimate for some…read moreinsulation work on 7/25/22 at 13:00. Waited all afternoon and no one showed up. Called the office and the receptionist said that the appointment somehow never got entered and all of my info was lost. Made another appointment for the next day (7/26). Once again I waited all afternoon and Dustin was again a no-show. Not the way to do business.