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TRUSTED BY SUNNYVALE, TX HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon206
    Verified insulation services reviews

Find Insulation pros in Sunnyvale

NxT Level Insulation
5.0(
8
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"Last summer, even with the AC running constantly and the thermostat set at 72 degrees, the temperature inside the house would reach 80 degrees or higher. This summer is much better; the thermostat is set to 70 degrees, and the house actually stays at 70. Our electric bills are also reflecting this improved energy efficiency. Thank you Dillon, NxT Level Insulation for the outstanding work and exceptional customer service."
Additional Photos
9 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Harsin Energy Services - The Energy Savers
Harsin Energy Services - The Energy Savers
4.7(
167
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"Mr. Harsin inspected my attic and fully explained options and trade offs to improve my insulation. His crew came next day, were knowledgeable, completed the work and cleaned up afterwards."
An energy Efficient attic, with radiant barrier.
 A good insulation job. R-38. Formaldyhide free.
Radiant barrier installed. Now insulation.
old can lights waist $20 a year. I can fix that.
 Attic view. They are why you have so much dust.

+23

Response time8 hrs
22 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Remington Insulation and Ventilation
Remington Insulation and Ventilation
5.0(
25
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

"Top notch customer service.  They explained to me line by line all the rebates I can get through the utility company.  The biggest being the green energy tax credit that was about to expire by the end of the year if I were to install a solar attic fan through them, which I had no idea.  The rebates and credits really help me make the decision to get it done now.  So glad we did. Technicians were on time, in and out clean and efficient.   The solar attic fan they installed made a huge difference in our attic.   They were able to retrofit it over our existing vent hole which was very nice because we didn't have to cut a new hole in our roof.  All and all just wonderful experience.  The new insulation made our home much more comfortable now."
Added R50
Added R50
Solar attic fan
Response time4 hrs
Response rate100%
3 neighbors recently requested a quote
Fulkrum Operating Company, LLC
5.0(
28
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"My son recently purchased an older home that had very little attic insulation. After Rob's team finished adding fiberglass insulation the A/C turned off almost immediately and the home remained at 74 degrees even though it was over 100 that day. I was very impressed and plan to have them come inspect my attic next !"
75 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Koala Insulation of Dallas
Koala Insulation of Dallas
4.8(
15
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"They had fair pricing. They were on time, efficient, communicated well, and cleaned up well before leaving. Very nice people to hire for insulation installation."
Professional, Friendly, Knowledgeable
Bluffview Insulation Upgrade
Response time7 hrs
37 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Climate Doctors
Climate Doctors
4.8(
3,288
)

Serving Sunnyvale, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Credit card accepted

"We had two separate appointments, one for duct cleaning and one to add insulation. Both crews were professional, clean, efficient and polite. They were all responsive to questions and feedback. I will definitely hire Climate Doctors again in the future and will have no problems referring them to friends, family, co-workers, and my Real Estate clients!"
Response time1 day
Response rate95%
16 neighbors recently requested a quote
Avatar for Energy Attic
Energy Attic
4.3(
34
)

Serving Sunnyvale, TX and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"They were a bit over the rest of the company’s that I had out. But the pease of mind that I had knowing that they were going to do it right was worth it. During the bid Mike answered all my questions before I was even able to ask them. Made a great impression on me. They also worked well with me removing my old insulation myself. PLUS , they hauled off the old stuff for me at a great price!! Thx guys!"
Best Fiberglass installers in the world!
100 yr old house Foil and Fiberglass
Foil and Fiberglass
Tall Attic Foil and Fiberglass
Radiant Barrier and Fiberglass Insulation

+6

Response time2 days
9 neighbors recently requested a quote
Recommended by92%of homeowners
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Showing 1-10 of 232
Insulation questions, answered by experts

Canned spray foam has an R-value of R-3.7 per inch. However, it’s not great for use as insulation. Also known as single-component spray foam, it doesn’t expand as much as two-part types that work for insulating the whole house. Save the canned foam for gaps around doors and windows.

Yes, it is possible to have too much insulation, which can have detrimental effects. While more insulation might seem better for energy efficiency, a home needs to "breathe" or ventilate to release moisture that accumulates inside. Over-insulating can seal a house too tightly, trapping water vapor and leading to several problems, including mold, mildew, and condensation. Homes in warm, humid climates are particularly susceptible to mold, while those in colder climates can experience condensation from temperature fluctuations. Additionally, adding more insulation than the recommended amount for your climate may not provide recoverable energy savings. To avoid these issues, consult a professional insulation contractor who can determine the optimal amount of insulation for your home.

Radiant barriers and insulation serve different purposes, so one is not inherently better than the other. Radiant barriers reflect radiant heat, helping keep spaces cool, especially in hot climates, while insulation slows heat transfer through conduction. For optimal energy efficiency, it’s best to use both together. 

Radiant barriers can enhance the performance of insulation by preventing heat gain in the summer and heat loss in the winter. The choice between them depends on specific climate conditions and the building’s design requirements.

You should not put fiberglass insulation in basements, since fiberglass is known to trap mold and mold is more commonly grown and produced in basements. You should also avoid placing insulation near water heaters, oil burners, or other hot appliances. For more information about the best and worst places to install insulation, consider hiring an insulation professional.

Yes, insulating hot water pipes helps your system run more efficiently. This is especially true in basements in colder climates, where cold air likes to settle in. There are a few ways to insulate water pipes (foam is common) to keep hot water hot, reducing the need for your water heater to constantly heat the water in the tank or your circulator to kick on more than necessary.

The Sunnyvale, TX homeowners’ guide to insulation services

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