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TRUSTED BY CUPERTINO, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon22
    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Cupertino

Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)
Energy Audit - For BusinessHome Energy Audit

Serving Cupertino, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"We needed to replace our old HVAC system, and the entire process was smooth and stress-free. The crew was knowledgeable and gave us several options that fit our budget. The installation was clean, quick, and professionally done. Our home feels more comfortable than ever, and our energy bill is already lower. Five stars!"
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+24

Response time3 days
9 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Energy Audit - For BusinessHome Energy Audit

Serving Cupertino, 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 Landmark Energy Upgrades
Landmark Energy Upgrades
4.8(
59
)
Energy Audit - For BusinessHome Energy Audit

Serving Cupertino, CA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"The reviews below me said it best: Ezra was fantastic! He was prompt, professional, and very informative. He explained to me each of the things he was doing, what he looked for in an audit, and what to expect. He also answered all of my questions about the kind of improvements that were worth it and those that were a waste of money. We were required to have an Energy Audit to sell our home and our realtor recommended Ezra from Landmark construction & energy crew. Lucky for us, Ezra found no recommendations and gave us a good "bill of health." What I like more is that if he does have recommendations, he doesn't perform any work himself, providing a truly unbiased opinion.  I fully plan on having Ezra perform an audit of our next home, whether it is required or not."
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
Avatar for Service Champions Heating & Air Conditioning
Service Champions Heating & Air Conditioning
4.6(
688
)
Energy Audit - For BusinessHome Energy Audit

Serving Cupertino, CA and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"The technicians, Chris F, Tyler H and Christian C, were friendly and personable. Great job on my new water heater! Chris got me 18 month financing with no interest. I would definitely use them again!"
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+42

Response time9 hrs
Response rate100%
Recommended by91%of homeowners
Avatar for Green NRG Inc.
Green NRG Inc.
4.1(
62
)
Energy Audit - For BusinessHome Energy Audit

Serving Cupertino, CA and surrounding areas

In business since 1999

Emergency services offered

Credit card accepted

"we were very impressed with out solar endeavor. The installers came when they said they would and finished their job within the same day. We added insulation to our attic to reduce our heating and cooling for the house and replaced 2 old windows . All the guys were great from Idan who evaluated our home, office staff and installers. We are very happy. "
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+12

Recommended by90%of homeowners
Avatar for Hussey Bros Inc
Hussey Bros Inc
4.7(
64
)
Energy Audit - For BusinessHome Energy Audit

Serving Cupertino, CA and surrounding areas

In business since 1977

Free estimates

Emergency services offered

"The man arrived on time.  Mild argument about parking permit (we live in permit pkg neighborhood).  Although I didn't specifically request it, he didn't inform me about how much repairs would cost.  He expertly fixed our furnace and relit pilot light.  He explained about the machinery.  
I had bought an online coupon through AL, and provider office knew that.   Unfortunately, he didn't know about it, but he graciously applied it.  Had I forgotten about it, I would have been charged more.
"
Recommended by95%of homeowners
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Energy Efficiency Auditing questions, answered by experts

Yes, pros suggest units with high EER ratings for energy savings.

Replacing a window frame will improve your home’s energy efficiency if the old frame is cracked or damaged in a way that allows unconditioned air from the outside into your living space or if you upgrade to a more energy-efficient window frame material. Aluminum is the least energy-efficient window frame material, followed by vinyl and wood. Fiberglass and composite frames are the most energy-efficient.

DIY is possible with basic tools. Professional audits provide comprehensive assessments and tailored recommendations.

Thankfully, LED lights use less electricity than incandescent lights, meaning you won’t spend as much on utility bills by using these light strips. Each 5-meter LED light strip will cost about $3 per year on your energy bill.

R-value measures an insulation material's thermal resistance, indicating its ability to resist heat transfer. A higher R-value signifies better insulation performance because the material is more effective at slowing heat flow. The R-value depends on the type, thickness, and density of the insulation material, such as fiberglass, foam, or cellulose. Each inch of insulation typically provides an R-value between 3 and 8. There is no single universal R-value; the optimal choice depends on your climate zone. Colder climates require a much higher R-value than warmer ones to maintain energy efficiency, keep the home warm in winter and cool in summer, and manage costs.

The Cupertino, CA homeowners’ guide to energy efficiency auditing services

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