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Verified Reviews for Energy Efficiency Auditing pros in Cupertino, CA
*The Angi rating for Energy Efficiency Auditing companies in Cupertino, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.
*The HomeAdvisor rating for Energy Efficiency Auditing companies in Cupertino, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.
Last update on January 09, 2026
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Global Green Solutions
Global Green Solutions
Whether you need an A/C or Heater installation or repair in Los Angeles, our team of HVAC pros is here to deliver outstanding service. We're passionate about delivering an exceptional heating and air conditioning experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. We're committed to serving you with quality and great value. We'll come to you, listen to your needs, and then come back to you with a logical, feasible plan that works for you. Our first-time customers continually become our long-term customers time and time again, choosing us for all the heating, AC, air ducts needs. Contact us today and see what our commitment to quality is all about! We may not be related, but you'll feel like we're family. We Service Los Angeles and surrounding areas. Call us today for a free estimate!
"Excellent heating and air conditioning repair, replacement, and new installation services! Everything went smoothly and without incident from beginning to end. Before departing, they made sure the system was operating flawlessly, responded quickly, and worked effectively. Excellent service?I heartily recommend them!"
James on December 2025
Whether you need an A/C or Heater installation or repair in Los Angeles, our team of HVAC pros is here to deliver outstanding service. We're passionate about delivering an exceptional heating and air conditioning experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. We're committed to serving you with quality and great value. We'll come to you, listen to your needs, and then come back to you with a logical, feasible plan that works for you. Our first-time customers continually become our long-term customers time and time again, choosing us for all the heating, AC, air ducts needs. Contact us today and see what our commitment to quality is all about! We may not be related, but you'll feel like we're family. We Service Los Angeles and surrounding areas. Call us today for a free estimate!
"Excellent heating and air conditioning repair, replacement, and new installation services! Everything went smoothly and without incident from beginning to end. Before departing, they made sure the system was operating flawlessly, responded quickly, and worked effectively. Excellent service?I heartily recommend them!"
James on December 2025

Service Champions Heating & Air Conditioning
Service Champions Heating & Air Conditioning
Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.
"Our Service Tech, Alex Peck, arrived on time to perform the annual check up & tune-up of our HVAC System. He was very professional and following the Tune-Up asked if there was any other items that needed done or looked into that he could take care of. His services were very much appreciated and very professional. Lee"
Lain L on September 2025
Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.
"Our Service Tech, Alex Peck, arrived on time to perform the annual check up & tune-up of our HVAC System. He was very professional and following the Tune-Up asked if there was any other items that needed done or looked into that he could take care of. His services were very much appreciated and very professional. Lee"
Lain L on September 2025

BAZ Service Refrigeration
BAZ Service Refrigeration
We are proud to offer fast, friendly, affordable and reliable service and installation for both residential and commercial equipment. We have the extensive experience and expertise to troubleshoot a wide range of equipment. Air Conditioning and Heating: We provide installation, repair, and replacement services for all brands of air conditioners, gas and heat pump systems, for both residential and commercial customers. Refrigeration We provide installation, repair, and replacement services for all refrigeration brands, both residential & commercial, including: wine cellars, walk-in boxes, produce coolers, ice machines, reach-in coolers, beverage coolers, and more. Maintenance We provide air balancing, efficiency testing, and required maintenance of refrigeration, gas, A/C, and heat pump systems for residential and commercial customers. Annual Inspections We inspect electrical disconnect boxes and test capacitors for proper rating and safety, inspect condenser coils and remove debris, and monitor refrigerant for proper operating pressures. Pre-Season Inspection We inspect both indoor and condenser coils, clean or replace existing air filters as needed, as well as test thermostats for proper operation.
"Good diagnosis and remedy."
Eugene C on April 2023
We are proud to offer fast, friendly, affordable and reliable service and installation for both residential and commercial equipment. We have the extensive experience and expertise to troubleshoot a wide range of equipment. Air Conditioning and Heating: We provide installation, repair, and replacement services for all brands of air conditioners, gas and heat pump systems, for both residential and commercial customers. Refrigeration We provide installation, repair, and replacement services for all refrigeration brands, both residential & commercial, including: wine cellars, walk-in boxes, produce coolers, ice machines, reach-in coolers, beverage coolers, and more. Maintenance We provide air balancing, efficiency testing, and required maintenance of refrigeration, gas, A/C, and heat pump systems for residential and commercial customers. Annual Inspections We inspect electrical disconnect boxes and test capacitors for proper rating and safety, inspect condenser coils and remove debris, and monitor refrigerant for proper operating pressures. Pre-Season Inspection We inspect both indoor and condenser coils, clean or replace existing air filters as needed, as well as test thermostats for proper operation.
"Good diagnosis and remedy."
Eugene C on April 2023

Prosper Construction Development, Inc.
Prosper Construction Development, Inc.
We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!
"Fast response and clear communication throughout the process."
Marco T on April 2025
We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!
"Fast response and clear communication throughout the process."
Marco T on April 2025

Apollo Energies
Apollo Energies
We are independent energy consultants who reduced our own energy use and saved several hundreds of dollars monthly on our utility bill and made our homes more comfortable and now are helping others achieve similar results. We are not contractors. We do not get paid based on the recommendations we make or the recommendations you choose to do. We want to provide you with what you need to do, explain why you need to do it so that you have all the information you need to make an informed decision. Once you've made the decision on what you want to do, after having all the information necessary to make an informed decision, we will help you implement your decision. We have vetted many home performance contractors and we know they will do the quality work you want and deserve. There are PGE rebates available and financing available that we will show you how to leverage to your advantage. So give us a try. You'll be glad you did.
"Apollo did a fine job assessing my townhomes energy needs. The energy report covered what I needed."
Motiejus R on June 2019
We are independent energy consultants who reduced our own energy use and saved several hundreds of dollars monthly on our utility bill and made our homes more comfortable and now are helping others achieve similar results. We are not contractors. We do not get paid based on the recommendations we make or the recommendations you choose to do. We want to provide you with what you need to do, explain why you need to do it so that you have all the information you need to make an informed decision. Once you've made the decision on what you want to do, after having all the information necessary to make an informed decision, we will help you implement your decision. We have vetted many home performance contractors and we know they will do the quality work you want and deserve. There are PGE rebates available and financing available that we will show you how to leverage to your advantage. So give us a try. You'll be glad you did.
"Apollo did a fine job assessing my townhomes energy needs. The energy report covered what I needed."
Motiejus R on June 2019
Pinnacle Energy Solutions
Pinnacle Energy Solutions
Pinnacle Energy Solutions has become a staple of professionalism and quality work in San Ramon for years. With decades of experience, there is no job too large or small. Call today to schedule an appointment!
"The thing I appreciate with Steven is, there is no sales pitch! He paired us with best options we have and he always gets back and answers any questions we have to me! Just great!"
Greg N on August 2021
Pinnacle Energy Solutions has become a staple of professionalism and quality work in San Ramon for years. With decades of experience, there is no job too large or small. Call today to schedule an appointment!
"The thing I appreciate with Steven is, there is no sales pitch! He paired us with best options we have and he always gets back and answers any questions we have to me! Just great!"
Greg N on August 2021

California Energy Consultant Service
California Energy Consultant Service
California Energy Consultant Service is one of the largest door and window replacement companies in Sacramento, CA. We cater to all your needs and concerns by offering you superior quality windows and doors. Choose the best from our wide selection of Sacramento windows, doors and siding to give your existing residential or commercial space a new and improved look. Our foundation is based on honesty, integrity, and the commitment to a job worthy of repeat business and referrals. We strive to serve all our clients with the finest quality replacement doors, windows and siding. At California Energy Consultant Service, we understand your requirements and guarantee 100% customer satisfaction. By installing our stylish and ergonomically viable windows and doors, you can drastically improve the appearance of your home or office. We take pride in being the best window replacement company in Sacramento, helping you to increase your property value and save money on your energy costs. Here at California Energy Consultant Service, we have been providing outstanding products and services to the Sacramento area for nearly 30 years. Our highly skilled professional staff is dedicated to matching the right products to your needs, and making sure that the job is done on time and on budget. We are highly committed to helping our customers get the best possible services so that they get value for their hard-earned money. It is our firm belief that our customers are our most important assets, and that’s why we look forward to building a long-term relationship with you. We are proud to say that our client base is full of referrals and repeat business. For years, we have consistently maintained an excellent reputation in the Sacramento door and window replacement industry, and we continue to deliver highly dependable products and services. California Energy Consultant Service - Address: 11367 Trade Center Dr Ste 115, Rancho Cordova, CA 95742 Tel: (916) 852-8132
"Excellent experience with this company. They lent us a portable air conditioner while we waited for our new air conditioner to be installed. They helped us with financing the new system. All the service employees were helpful, friendly, and knowledgeable. They even came out to help us after the office was closed. I fully recommend their company."
Melisa G on September 2019
California Energy Consultant Service is one of the largest door and window replacement companies in Sacramento, CA. We cater to all your needs and concerns by offering you superior quality windows and doors. Choose the best from our wide selection of Sacramento windows, doors and siding to give your existing residential or commercial space a new and improved look. Our foundation is based on honesty, integrity, and the commitment to a job worthy of repeat business and referrals. We strive to serve all our clients with the finest quality replacement doors, windows and siding. At California Energy Consultant Service, we understand your requirements and guarantee 100% customer satisfaction. By installing our stylish and ergonomically viable windows and doors, you can drastically improve the appearance of your home or office. We take pride in being the best window replacement company in Sacramento, helping you to increase your property value and save money on your energy costs. Here at California Energy Consultant Service, we have been providing outstanding products and services to the Sacramento area for nearly 30 years. Our highly skilled professional staff is dedicated to matching the right products to your needs, and making sure that the job is done on time and on budget. We are highly committed to helping our customers get the best possible services so that they get value for their hard-earned money. It is our firm belief that our customers are our most important assets, and that’s why we look forward to building a long-term relationship with you. We are proud to say that our client base is full of referrals and repeat business. For years, we have consistently maintained an excellent reputation in the Sacramento door and window replacement industry, and we continue to deliver highly dependable products and services. California Energy Consultant Service - Address: 11367 Trade Center Dr Ste 115, Rancho Cordova, CA 95742 Tel: (916) 852-8132
"Excellent experience with this company. They lent us a portable air conditioner while we waited for our new air conditioner to be installed. They helped us with financing the new system. All the service employees were helpful, friendly, and knowledgeable. They even came out to help us after the office was closed. I fully recommend their company."
Melisa G on September 2019

California Construction Center
California Construction Center
Servicing the Bay Area area since 2005, California Construction Center, Inc is a licensed, bonded and insured general construction company. We have been remodeling properties for residential, commercial and industrial properties. "CCC" is a prestigious company who strives on professionalism and strong client satisfaction results. Our reputable ways allows for us to make and keep professional relationships, as we are in the mind set that the best business appreciation we can get is a referral. Family owned and operated "CCC" has spent many years creating a name for itself as both valued business and as a place where our clients can be treated with the up most dignity and respect. For we value their ideas and strive to give them input without jeopardizing their visions and ideas in the process, in the most respectable fashion possible. "CCC" displays extreme expertise and knowledge in all their business ventures. "CCC". We have aimed to be better than most with the ideals that growth is essential for success. We are proud to share that of many competing companies , "CCC "Was chosen out of 100 top contractors in the Southern California area to be on the hit "TV" show "Flip This House". We would love if your could take a moment to watch the TV show clip from http://www.youtube.com/watch?v=ekxrninanou where you can observe the owners Jonathan and Oz demonstrating their ongoing knowledge and expertise in this extensive field, both Design and Construction. Also click the following testimonial link http://www.youtube.com/watch?feature=player_embedded&v=_eslfll1xiq to view the testimonial video showing our previous clients who have had First hand experiences with "CCC". We value your time and input and strive to do business with both new and old clients, in order to continue to remain the reputable company we strive ourselves as having been this long.
"excellent work"
Justin J J on July 2025
Servicing the Bay Area area since 2005, California Construction Center, Inc is a licensed, bonded and insured general construction company. We have been remodeling properties for residential, commercial and industrial properties. "CCC" is a prestigious company who strives on professionalism and strong client satisfaction results. Our reputable ways allows for us to make and keep professional relationships, as we are in the mind set that the best business appreciation we can get is a referral. Family owned and operated "CCC" has spent many years creating a name for itself as both valued business and as a place where our clients can be treated with the up most dignity and respect. For we value their ideas and strive to give them input without jeopardizing their visions and ideas in the process, in the most respectable fashion possible. "CCC" displays extreme expertise and knowledge in all their business ventures. "CCC". We have aimed to be better than most with the ideals that growth is essential for success. We are proud to share that of many competing companies , "CCC "Was chosen out of 100 top contractors in the Southern California area to be on the hit "TV" show "Flip This House". We would love if your could take a moment to watch the TV show clip from http://www.youtube.com/watch?v=ekxrninanou where you can observe the owners Jonathan and Oz demonstrating their ongoing knowledge and expertise in this extensive field, both Design and Construction. Also click the following testimonial link http://www.youtube.com/watch?feature=player_embedded&v=_eslfll1xiq to view the testimonial video showing our previous clients who have had First hand experiences with "CCC". We value your time and input and strive to do business with both new and old clients, in order to continue to remain the reputable company we strive ourselves as having been this long.
"excellent work"
Justin J J on July 2025

Sandium
Sandium
Sandium is the Award Winning South Bay HVAC expert, and we offer you a fresh approach to home performance. Sandium evaluates your house as a whole, identifying your home’s unique characteristics that work side-by-side with your equipment to make your home comfortable. Learn about Sandium's whole-house approach and the road to healthier air and lower bills.
"I get why Sandium has great reviews. They're install services are great and since 99% of systems probably work reliably for years that's the extet of dealing with them. But their after service support has been awful and if you're stuck with a system that fails prematurely then good luck. We paid $40k+ for a brand new Samsung heat pump system and all new ductwork last year. One of our attic air handlers died on Dec 11 taking out our bedroom zone and leaving us with nothing but space heaters for our bedrooms during our first winter with the brand new system. Took till early Jan to finally get it fixed which left us with space heaters over the holidays. Seems crazy to me when we paid a very significant premium for sandium over other competitors truly believing they were the best. Once the temporary fix was in the technician realized that the bearing failed because the cabinet was deformed. That could only have happened in original transit. They ordered a new air handler which took 3+ months to arrive. Now I'm being told this can't be installed till June or July because they're too busy. Given the system is likely to fail when under load this means there's a pretty good chance I'll lose cooling during a heat wave before they can get the new unit in. I'm by no means excited to get this new unit in as it'll be very disruptive and require removing our existing closet built ins but it has to be done. This whole situation is incredibly unacceptable. To take 6-7 months to fix a brand new system is crazy to me. I've really tried to be patient on this and it pains me to leave this review but hopefully anyone who reads this can see how unacceptable this situation is. I'm not even going to get into the back and forth with Samsung and the supply company since I made the check out to sandium and so they should be responsible for the system. When you hire an hvac company, turn around time for fixing things matters. I totally get that things can go wrong but the response to things going wrong matters. Sandium is too busy with new work to bother with that. It's not like fixing this is a favor to me. It's getting my system into the condition it should have been in on day 1."
Daniel F on April 2021
Sandium is the Award Winning South Bay HVAC expert, and we offer you a fresh approach to home performance. Sandium evaluates your house as a whole, identifying your home’s unique characteristics that work side-by-side with your equipment to make your home comfortable. Learn about Sandium's whole-house approach and the road to healthier air and lower bills.
"I get why Sandium has great reviews. They're install services are great and since 99% of systems probably work reliably for years that's the extet of dealing with them. But their after service support has been awful and if you're stuck with a system that fails prematurely then good luck. We paid $40k+ for a brand new Samsung heat pump system and all new ductwork last year. One of our attic air handlers died on Dec 11 taking out our bedroom zone and leaving us with nothing but space heaters for our bedrooms during our first winter with the brand new system. Took till early Jan to finally get it fixed which left us with space heaters over the holidays. Seems crazy to me when we paid a very significant premium for sandium over other competitors truly believing they were the best. Once the temporary fix was in the technician realized that the bearing failed because the cabinet was deformed. That could only have happened in original transit. They ordered a new air handler which took 3+ months to arrive. Now I'm being told this can't be installed till June or July because they're too busy. Given the system is likely to fail when under load this means there's a pretty good chance I'll lose cooling during a heat wave before they can get the new unit in. I'm by no means excited to get this new unit in as it'll be very disruptive and require removing our existing closet built ins but it has to be done. This whole situation is incredibly unacceptable. To take 6-7 months to fix a brand new system is crazy to me. I've really tried to be patient on this and it pains me to leave this review but hopefully anyone who reads this can see how unacceptable this situation is. I'm not even going to get into the back and forth with Samsung and the supply company since I made the check out to sandium and so they should be responsible for the system. When you hire an hvac company, turn around time for fixing things matters. I totally get that things can go wrong but the response to things going wrong matters. Sandium is too busy with new work to bother with that. It's not like fixing this is a favor to me. It's getting my system into the condition it should have been in on day 1."
Daniel F on April 2021

B A Morrison
B A Morrison
B.A. Morrison is a family-owned Heating, Ventilation, Air-Conditioning (HVAC) and General Construction company. We have been in business since 1990 and are fully insured and bonded. Our employees are experienced, trustworthy, and honest tradesmen. We are ready to meet your needs in a timely scheduled manner, to your satisfaction, and at a fair price. We offer free estimates for regularly scheduled maintenance of your HVAC equipment, new and replacement HVAC equipment installation, and your general construction needs. Please consider our service, installation, replacement, or home improvement and remodeling services the next time you have a need for your residential or commercial building.
B.A. Morrison is a family-owned Heating, Ventilation, Air-Conditioning (HVAC) and General Construction company. We have been in business since 1990 and are fully insured and bonded. Our employees are experienced, trustworthy, and honest tradesmen. We are ready to meet your needs in a timely scheduled manner, to your satisfaction, and at a fair price. We offer free estimates for regularly scheduled maintenance of your HVAC equipment, new and replacement HVAC equipment installation, and your general construction needs. Please consider our service, installation, replacement, or home improvement and remodeling services the next time you have a need for your residential or commercial building.
The Cupertino, CA homeowners’ guide to energy efficiency auditing services
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A home energy audit is a detailed write-up of how to lower your utility bills and increase your comfort level. Find out if they’re worth the cost.
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