Top-rated energy efficiency auditors.

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There are 5 highly-rated local energy efficiency auditors.

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Avatar for Bell Brothers Plumbing Heating & Air

Bell Brothers Plumbing Heating & Air

4.79(
357
)
Approved Pro

Bell Brothers Plumbing Heating & Air

4.79(
357
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
71 years of experience

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"They were very good. The best."

Nabila S on June 2022

We are locally owned and operated, and serving the Bay Area. Our focus is residential air conditioning, heating, Installation of HVAC systems and full-service plumbing. We love working with homeowners and helping to take care of their precious homes. We also keep busy doing light commercial service. Serving California since 1954, financing options available, We don't charge extra for Saturday service calls.

"They were very good. The best."

Nabila S on June 2022


Pinnacle Energy Solutions-Unlicensed Contractor

5.00(
1
)
Approved Pro

Pinnacle Energy Solutions-Unlicensed Contractor

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

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


Avatar for Service Champions Heating & Air Conditioning

Service Champions Heating & Air Conditioning

4.71(
619
)
Approved Pro

Service Champions Heating & Air Conditioning

4.71(
619
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
571 local quotes requested

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.

"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!"

Cindy F on June 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.

"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!"

Cindy F on June 2025


Avatar for Paradigm Shift Solar

Paradigm Shift Solar

No reviews yet

Paradigm Shift Solar

No reviews yet
3 years of experience

With over 7 years experience, we work with 5 of the top, most highly rated solar installers in the country. Unlike other solar companies, we are able to work with you to get you up to 3 competitive quotes to compare. No need to waste hours consulting with multiple solar sales people. One conversation. Three quotes. Our process starts with a quick 15 minute discovery call to determine exactly how much solar you need for your home. No more. No less.

With over 7 years experience, we work with 5 of the top, most highly rated solar installers in the country. Unlike other solar companies, we are able to work with you to get you up to 3 competitive quotes to compare. No need to waste hours consulting with multiple solar sales people. One conversation. Three quotes. Our process starts with a quick 15 minute discovery call to determine exactly how much solar you need for your home. No more. No less.


Powur Flawless Solar

No reviews yet

Powur Flawless Solar

No reviews yet

Powur delivers home energy solutions that save you money and lower your carbon footprint. Your solution to low cost, clean, reliable energy your family can depend on. Powur provides clean, reliable energy at significantly lower costs.

Powur delivers home energy solutions that save you money and lower your carbon footprint. Your solution to low cost, clean, reliable energy your family can depend on. Powur provides clean, reliable energy at significantly lower costs.



"Had them out about 7 months ago to replace insides of my dryer as it was not working. Thought they did the job as our dryer worked. Then two days later the credit card I used to pay them had several unauthorized charges on it. Now 7 months later my dryer needs to be fixed again, with all of the rollers replaced, which is what they said they did 7 months ago. They are crooks. DO NOT USE THIS COMPANY."

Bill I on May 2024

Book us ONLINE and take $10 Discount with repair Professional Technicians Available 7 days a week. Same day Service. Fast service for ALL Appliance. Our Work is 100% Guaranteed.

"Had them out about 7 months ago to replace insides of my dryer as it was not working. Thought they did the job as our dryer worked. Then two days later the credit card I used to pay them had several unauthorized charges on it. Now 7 months later my dryer needs to be fixed again, with all of the rollers replaced, which is what they said they did 7 months ago. They are crooks. DO NOT USE THIS COMPANY."

Bill I on May 2024


Avatar for Duran HVAC inc

Duran HVAC inc

5.00(
8
)

Duran HVAC inc

5.00(
8
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Duran HVAC, inc. is committed to providing quality work in heating, and cooling services to the South Bay, and surrounding area. From a small routine maintenance to a complete new install our service, and install technicians are ready to provide excellent service and address any needs of your indoor comfort.

"Tony and his team from Duran HVAC are the A team!! I give them an A++ on their work for us. Tony came out and has very helpful in thinking about the overall job, and we discussed options. His team led by Paul then came out and completed all the work described above in 4 days. Tony came by and checked on the work progress as well. This team is so skilled at what they do, they are a pleasure to work with, very careful with tarps and cleaning up each day, and the work has been completely superbly! They tested the system at the end of the last day and showed me how to program the two thermostats. They are the best! This is the beginning of an excellent long-term customer-service relationship. I will definitely be asking them to come back and handle the yearly maintenance checks of the systems. It is wonderful to find a team you know are highly competent, reliable, and great to work with! I highly recommend them to others! Do yourself a favor and call Tony at Duran HVAC now! You'll be very happy you did!"

Clare-Marie K on November 2020

Duran HVAC, inc. is committed to providing quality work in heating, and cooling services to the South Bay, and surrounding area. From a small routine maintenance to a complete new install our service, and install technicians are ready to provide excellent service and address any needs of your indoor comfort.

"Tony and his team from Duran HVAC are the A team!! I give them an A++ on their work for us. Tony came out and has very helpful in thinking about the overall job, and we discussed options. His team led by Paul then came out and completed all the work described above in 4 days. Tony came by and checked on the work progress as well. This team is so skilled at what they do, they are a pleasure to work with, very careful with tarps and cleaning up each day, and the work has been completely superbly! They tested the system at the end of the last day and showed me how to program the two thermostats. They are the best! This is the beginning of an excellent long-term customer-service relationship. I will definitely be asking them to come back and handle the yearly maintenance checks of the systems. It is wonderful to find a team you know are highly competent, reliable, and great to work with! I highly recommend them to others! Do yourself a favor and call Tony at Duran HVAC now! You'll be very happy you did!"

Clare-Marie K on November 2020


CalSolar

No reviews yet

CalSolar

No reviews yet
15 years of experience

CalSolar serves agri-businesses, municipalities, businesses and homeowners throughout the state of California. It’s our mission to help home and business owners: 1. Save Money. 2. Become "Energy Independent". 3. Help the Environment. CalSolar customizes every Solar system. Customers receive the highest quality solar system, top-tier customer service, design and installation.

CalSolar serves agri-businesses, municipalities, businesses and homeowners throughout the state of California. It’s our mission to help home and business owners: 1. Save Money. 2. Become "Energy Independent". 3. Help the Environment. CalSolar customizes every Solar system. Customers receive the highest quality solar system, top-tier customer service, design and installation.


Avatar for Climate Pros Heating & Cooling, Inc

Climate Pros Heating & Cooling, Inc

5.00(
7
)

Climate Pros Heating & Cooling, Inc

5.00(
7
)
23 years of experience

We are a small, family owned and operated HVAC company proudly serving the Bay Area, Hollister, and the surrounding communities. With over 20 years of experience, we specialize in system design, permits, new installations including gas furnaces, electric heat pumps, central A/C, and ductless mini split heat pumps. What sets us apart is our commitment to doing far more than the average HVAC Company. We take our time to deep dive into the specific layout, structure, and needs of your home to ensure your system is sized and designed correctly- not just quickly. Proper sizing and design are crucial to comfort, efficiency and long term performance. Our team is trained to evaluate every details and deliver results you can trust.

"Climate Pros came in after another contractor left my ductless system incomplete, and they immediately impressed me. They found and corrected multiple installation mistakes including one serious error that would have cost me thousands in future repairs if not for their diligent work. They had my system up and running in no time. Their professionalism, knowledge, and efficiency made a huge difference. I’m extremely grateful for their work and highly recommend Climate Pros to anyone needing reliable HVAC service. "

Thalia B on November 2025

We are a small, family owned and operated HVAC company proudly serving the Bay Area, Hollister, and the surrounding communities. With over 20 years of experience, we specialize in system design, permits, new installations including gas furnaces, electric heat pumps, central A/C, and ductless mini split heat pumps. What sets us apart is our commitment to doing far more than the average HVAC Company. We take our time to deep dive into the specific layout, structure, and needs of your home to ensure your system is sized and designed correctly- not just quickly. Proper sizing and design are crucial to comfort, efficiency and long term performance. Our team is trained to evaluate every details and deliver results you can trust.

"Climate Pros came in after another contractor left my ductless system incomplete, and they immediately impressed me. They found and corrected multiple installation mistakes including one serious error that would have cost me thousands in future repairs if not for their diligent work. They had my system up and running in no time. Their professionalism, knowledge, and efficiency made a huge difference. I’m extremely grateful for their work and highly recommend Climate Pros to anyone needing reliable HVAC service. "

Thalia B on November 2025

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Energy Efficiency Auditing questions, answered by experts

Hawaii is currently rated as the most expensive state for utilities. How much are utilities for a house in Hawaii? With electricity costs in Hawaii totaling nearly 42 cents per kilowatt-hour, residents are paying more to run their households than any other residents. Electricity costs in Hawaii are so high, mostly due to the fact that most of the electricity available to residents is produced using oil that must be shipped in from other places.

Costs depend on the property size, audit complexity, and whether additional testing (e.g., blower door) is included.

Generator size requirements vary wildly among properties, but typical generator sizes are listed below based on home square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14kW

  • 2,500 sq ft: 12–16kW

  • 3,000 sq ft: 16–20kW+

Unfortunately, home square footage isn’t always a good indicator of generator size requirements. Instead, you should call in a professional to discuss which items in your home you’d like to run via your generator. They can calculate peak and average consumption for those items and then size your generator appropriately for optimal performance.

Depending on the level of audit you choose, a home energy audit will at least include a walk-through of the home to determine visible inefficiencies, but may include testing and a highly detailed inspection and report laying out the home’s inefficiencies and providing recommendations to fix those issues. The audit may also include a review of utility bills and mechanical testing. Consult your home energy auditor about the types of services they provide before hiring.

Upgrade to double-glazed glass or apply energy-efficient coatings to reduce heat loss and utility costs.

The San Martin, 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.