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Crystal Lake, IL

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Building Energy Experts

3.3 (18 reviews)
Closed • 8:00 am - 6:00 pm

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Solar system installation

Building energy audit

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Review Highlights - Building Energy Experts

“Anthony did a great job in terms of explaining everything his company would do and why they take the approach that they do.”

Mentioned in 7 reviews

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Paragon

Paragon

(92 reviews)

Paragon Insulation has done an excellent job for me twice this year. The first time in January, I…read morehad Randy come out to quote attic sealing and insulation. While he was there to provide the quote, he noticed the kitchen floor was really cold (he took off his shoes when he entered the house). He pulled out his thermal camera and we saw the floor was 30-40F! I had noticed that area of the kitchen was cold in winter, but didn't realize it was coming from the floor, where kitchen is cantilevered out past the foundation wall. He proposed insulating the cantilevered area with spray foam, and then said he could insulate all the rim joists in the basement for the same price. A week or so later, while he was onsite doing the insulating, I mentioned I was going to finish the basement later in the year, and expected to use 3 inch foam panels. He suggested using spray foam instead since that would give me a few inches more space in the room. He gave me a price and I said I'd think about it. As I thought about it, I realized getting a few more inches in the room, and also getting a better sealing product would be worth it, and would save me many hours of labor and a lot of material costs. In summer, I started work on the basement project, and once I had the framing up and electrical roughed in, I called (now July) to schedule the spray foam. Randy honored the price from January, scheduled the job quickly, and it looks great! Something I especially appreciate about Randy and Paragon is that the guy who quotes the job actually does the job; it's not some sales guy, it's the owner who quotes AND does the work! Because of that, any questions get answered and you know exactly who is accountable for quality and completion. I did get other quotes for the attic, and Paragon was very competitive. I really appreciated Randy's suggestions, and they did not feel like a sales pitch; it felt like I was getting good options to consider that would solve a problem I had.

Nobody enjoys pouring money into the parts of their home they never see -- attics, crawl spaces,…read moreand the like. But when those areas need attention, it's essential that the work is done right and by someone you can trust. Randy and the team at Paragon Insulation & Services delivered an experience I'd recommend to anyone. My attic was poorly ventilated -- damp, musty, and overdue for attention. After deciding to bring in a professional, Randy came out to my home, thoroughly assessed the problem areas, and put together a detailed quote on the spot. The scope of work included removal of the existing insulation, air sealing around all attic entry points, sanitizing, air baffle installation, and installation of new Weather Blanket cellulose insulation. The new cellulose achieves an R-value that meets or exceeds Illinois code requirements. Paragon's pricing was competitive, though admittedly a bit higher than some of the larger corporate outfits. What made the difference was Randy's willingness to walk me through the entire plan and clearly explain what justified the investment. That transparency, combined with the comfort of working with a local, owner-operated business, made the decision easy. The crew came in and completed the job in about half a day -- fast, efficient, and clean. The entire process was documented with photos and videos, all of which were included with the final invoice. While up in the attic, they even took the time to correct some substandard work a prior contractor had left behind on my bathroom exhaust fans. I couldn't be happier with the results. I've already noticed a meaningful improvement in temperature consistency and overall comfort throughout my home. If you're looking for a trustworthy, professional insulation contractor, I wouldn't hesitate to recommend Paragon Insulation & Services.

The Attic Experts - Insulation & Attic Ventilation - Professional & Experienced Techs

The Attic Experts - Insulation & Attic Ventilation

(25 reviews)

I highly recommend the company for your next solutions or bathroom vents, insulation and roof…read morevents. I was first turned off by the gruff attitude I received over the phone, and numerous times to call to get any return call. After they Re worked our attic I am glad I did not give up. I could not be happier. I worried about my new roof being cut open to add 8 vents to my ranch home. The guy on the phone did the math with me and explained the codes and how he calculated the number of vents. This team even visited my home spent a lot of time taking pictures measuring, and looking for missing baffels in my attic soffit vents. It turned out we were missing almost everything to do it right. This proposal Engineer spent 45 minutes evaluating everything. Vaulted ceilings in 3 areas of my ranch home. Truly are experts, not just a name, its actually real honest and scientific expert type person. My heating bill in the first 3 months went from 230 per month to 89.00 a month, and the two rooms in front which needed heaters for the grandkids now stays at 68 min to 73 all the time. 8 vents 2 bathroom fans and re designed with proper size hoses 6 inches of blown in installation that from the side looks like my crew cut hair cut. How they got that to be perfect is awesome in itself. 9 vent baffles were installed, sealed all lights and any holes they found My roof vent from Storm Guard roof company had 2 areas where the roof vent went sideways and was never glued down. They repaired it too. Not one detail or little detail was missed. You can trust these people to do it Right. They did it all in 4 hours 15 minutes. I may go for the automatic Attic Fan in 2022 now, I just saved the money for that install in 4 months ROI is easy to justify. Thanks Guys, I was not a happy easy to get a long with guy at first too. both parents had passed away the week before, and I was knee deep in bills and paperwork. You recommend now, I will buy it. Trust is hard for me to give. Your team has earned it. Sandwich IL

I thought I posted a review, but don't see it here. Sadly, the owner did pass away. I called and…read morewas connected with a guy who sent "his brother" to give an estimate (they didn't want to come give an estimate). The brother was rude, didn't want to answer questions, and gave a very weird/off vibe. The estimate came in far above the ballpark I was quoted on the phone, and included things I hadn't asked for. No one responded to my call asking about it. I've since learned that this was two of the employees of the company handling things themselves. They handled it badly. I wasn't going to hire them anyway because of the experience, but it's a shame considering how amazing the company seemed to have been before.

Thermaseal Lakeside Insulation

Thermaseal Lakeside Insulation

(7 reviews)

i recently hired Thermaseal/Lakeside out of Cary to reinsulate my basement rim jioists and kneewall…read morewith closed cell foam insulation. The existng fiberglass batt insulation was deteriorated and in need of replacement. I received three estimates for the work from local contractors and all were similar in cost. The sales rep, Joe. quote was the most thorough and was genuinely interested in my job. The crew arrived on the date and time scheduled, completed the work as specified and cleaned up and disposed of all discarded materials. i do not usually write reviews for any work I have contracted for myself or my clients but I feel that it is justified in this case. Great job, well done ,by Joe and his crew! Glenn Vesely Illinois Licensed Architect/Professional Engineer AES Consultants Ltd.

Really really disappointed with my recent experience with Thermaseal / Lakeside Insulation. I used…read morethem several years ago for a crawlspace insulation job and was happy with the work. I reached back out to them to redo the same work because some construction work damaged the insulation they installed. This experience was completely different even though I was working with the same contact (Bill). There was nothing but broken promises from the moment I reached them. Started with call backs, continued with onsite estimate meeting and continued with the failure to ever deliver the estimate. There must have been 5 or 6 times that Bill said he would call, or show up, or provide the estimate and each time it never happened. Ultimately, he just ghosted me and stopped responding. Not only was it a headache, it actually cost me money out-of-pocket to rush delivery from another contractor to finish the job by my needed date - which Bill repeatedly claimed he would meet. Literally tried my best to give them business with repeatedly reaching out...whole experience was miserable.

Building Energy Experts - solarinstallation - Updated October 2026

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