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Find Insulation pros in Thermal

Fibers Insulation
5.0(
3
)

Serving Thermal, CA and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

"Geovany and his team did an amazing job at my house cleaning attic removing all debris lid insulation, sanitizing and air sealing attic, installing new insulation and radiant barrier. Job was done in a clean and professional manner. Team was polite and professional. I would recommend Fibers Insulation to anyone looking to upgrade or replace their insulation or just looking to add radiant barrier to their attic for a cooler more energy efficient home."
13 neighbors recently requested a quote
Avatar for Guardian Insulation, Inc.
Guardian Insulation, Inc.
4.7(
52
)

Serving Thermal, CA and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"The guys did a great job, cleaning up the old insulation and then reinstalling new insulation. They were professional and cleaned up after. I would recommend them."
Response time2 days
Recommended by95%of homeowners
Avatar for Evergreen Air Duct Cleaning
Evergreen Air Duct Cleaning
4.9(
27
)

Serving Thermal, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Good company to work with! They were very nice and seem to be honest over the phone as well. They came on time and did the job. My A/C system didn't work good and a strange smell came out of the ducts when I turned the A/C on. 
Jose that did the work, checked everything and connected a machine to the system letting it run for a while and added a cleaning chemical that made this smell gone.
I will hire them for the future. it was a hassle free with this company.
"
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+58

Recommended by94%of homeowners
Avatar for Evergreen Air Duct Cleaning
Evergreen Air Duct Cleaning
5.0(
28
)

Serving Thermal, CA and surrounding areas

In business since 2000

Free estimates

Credit card accepted

"Workers were efficient, clean, and pleasant. They described their work and then did it. The following work was performed: 1.Remove registers , clean and sanitize. 2.Clean out duct with Rotobrush to remove loose dust, fluff, particles, etc. 3.Wipe down the inside walls of the vent area with warm water and disinfectant mix."
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+2

Recommended by95%of homeowners
Avatar for OM Construction Inc
OM Construction Inc
4.7(
151
)

Serving Thermal, CA and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"Perfect!!! We originally d to repaint the whole house. Since that was out of our budget, we asked Tony to touch up our walls. When he finished, it looked like we had brand-new walls!!! Although it's the same beige color we already had, they look spectacular!!! He did the whole house in about 6hrs."
Roofing Project
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+86

Recommended by95%of homeowners
Avatar for Landmark Energy Upgrades
Landmark Energy Upgrades
4.8(
59
)

Serving Thermal, CA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Last week I had Landmark energy upgrades, do energy efficiency work at my home. The work included sealing all my duct-work in the attic as well as sealing all the spots between the living space below and blowing in additional insulation in order to bring me up to today's standards. I also had them replace all the duct work in my crawlspace and seal it as well as when they came for their initial inspection they found that my duct-work was riddled with holes and was completely uninsulated as well as being unsealed. I initially contacted Landmark after receiving notification that they were offering assorted rebates for home owners to incentivize them to do upgrades to there homes.
I was super pleased with these guys, a total of two crews worked on our home and they were both quick, professional, and explained what they would be doing in detail when they first arrived. They also did a good job cleaning up after themselves. Immediately I noticed a difference in my home after the work was finished. The HVAC system weren?t running nearly as much and the temperature in the home was absolutely more consistent.  Landmark Energy Upgrades promptly handled all the paperwork required in order for me to receive my rebates making this part of the process extremely easy. I fully recommend these guys!
"
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)

Serving Thermal, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"We recently had Mega Power Electric Inc install a solar system and panels. The President and provided excellent communication all the way through the process. He even met with us after installation to explain the almost incomprehensible PG&E bill. Although not the least expensive bid, his was competitive and I felt he was as interested in educating me about solar and the various types of panels and inverter systems as he was in selling a system. He demonstrated how the array of panels would meet our energy needs and as opposed to some of the other companies, wasn't selling us more than we needed. We are very satisfied with our solar system and I highly recommended Mega Power Electric Inc."
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+32

Recommended by100%of homeowners
Avatar for Green Attic Pros
Green Attic Pros
5.0(
13
)

Serving Thermal, CA and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"Green attic pros gave us a free estimate and performed the job a day later. Very friendly and extremely professional. We had rodents in our crawlspace for months and they took care of it in one day. We highly recommend this company. They definitely took care of the scratching sounds that we were loosing sleep over. Thank you Green attic pros."
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+166

Recommended by100%of homeowners
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FAQs for insulation service projects in Thermal, CA

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.

The Thermal, CA homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.

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