Customer Testimonials

Marcus T. — Mission Hills | Attic Insulation Upgrade

Our 1940s bungalow in Mission Hills was hemorrhaging heat every summer, and our energy bills showed it. The Thermal Nest team came out the same week I called, assessed the attic thoroughly, and gave me a clear written estimate with no hidden fees. They completed the blown-in insulation in one day and left the house cleaner than they found it. Our first electric bill after the job was nearly 25 percent lower — I only wish I had called sooner.

Sandra L. — La Jolla | Spray Foam Insulation

Living close to the coast in La Jolla means dealing with moisture and drafts that most people do not think about. Thermal Nest recommended closed-cell spray foam for our crawl space and rim joists, which was exactly the right call. The crew was professional, explained every step of the process, and finished ahead of schedule. My husband and I have noticed the living room stays significantly more comfortable, and the musty smell we used to get in winter is completely gone.

Derek and Alicia F. — Rancho Bernardo | New Construction Insulation

We hired Thermal Nest to insulate our newly built home in Rancho Bernardo before drywall went up, and they coordinated perfectly with our general contractor. The team showed up on time every single day without fail, which kept our build timeline on track. The foreman walked us through the R-value choices and helped us make smart decisions for San Diego’s climate zone. We would not hesitate to recommend them to anyone building or renovating in the North County area.

Patricia M. — Normal Heights | Garage and Wall Insulation

I converted my garage into a home office and needed it properly insulated to make it usable year-round. Thermal Nest gave me three different options at three different price points, which I really appreciated rather than just being upsold to the most expensive package. The installation was fast, the drywall contractor I hired afterward said the work was textbook clean, and I have been comfortable in my office through summer heat waves. Genuinely one of the best contractor experiences I have had in San Diego.

James R. — Chula Vista | Crawl Space Encapsulation and Insulation

We had an older home in Chula Vista with a crawl space that was completely uninsulated and showing signs of moisture damage. Thermal Nest diagnosed the problem accurately, recommended encapsulation along with new insulation, and gave us a fair price compared to the two other bids I collected. The crew was courteous, wore protective gear, and contained all the debris before hauling it away. Six months later the floors above the crawl space are noticeably warmer in the evenings and we have had zero moisture issues since.

Yolanda G. — North Park | Blown-In Attic Insulation

My North Park Craftsman had the original rock wool insulation from decades ago and it was doing almost nothing at this point. A friend recommended Thermal Nest and I am so glad she did. They removed the old material safely, checked for any ventilation issues, and installed new blown-in insulation at the proper depth for San Diego’s climate. The whole job wrapped up in about five hours and the crew cleaned up every bit of debris from my yard and driveway. My HVAC system runs far less often now.

Tom and Karen B. — El Cajon | Full Home Re-Insulation

We bought an older home in El Cajon that needed a full insulation overhaul from attic to walls to crawl space. Thermal Nest provided a detailed room-by-room assessment and a phased plan that fit our budget. Every crew member who came through our home was respectful of our belongings and kept disruption to a minimum. The warranty they offered gave us real peace of mind, and when we had a small question about the attic access panel two weeks after the job, someone returned our call within the hour. Outstanding company.

Rosa V. — Hillcrest | Air Sealing and Insulation Package

I wanted to reduce my carbon footprint and lower my utility costs in my Hillcrest condo, so I called Thermal Nest for an energy assessment. They identified significant air leaks around recessed lighting and the attic hatch that I never would have noticed on my own. The combined air sealing and insulation package they recommended made an immediate difference — my place stays cool much longer after the AC shuts off. The team was tidy, worked efficiently, and the price was exactly what they quoted with no surprises on the invoice.

Our team in action — insulation professionals serving San Diego

Why Customers Consistently Choose Thermal Nest Insulation of San Diego

Across hundreds of reviews and years of serving San Diego County, the same themes appear again and again in what our customers say about working with Thermal Nest Insulation. Here is what homeowners highlight most: