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Avatar for Global Green Solutions

Global Green Solutions

5.00(
111
)
Approved Pro

Global Green Solutions

5.00(
111
)
Approved Pro
Customers say: Quick response
20 years of experience
Free onsite estimate

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


Avatar for Service Champions Heating & Air Conditioning

Service Champions Heating & Air Conditioning

4.64(
655
)
Approved Pro

Service Champions Heating & Air Conditioning

4.64(
655
)
Approved Pro
Super Service Award
Customers say: Super punctual
22 years of experience
Free onsite estimate

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


Avatar for Posert Energy Consulting

Posert Energy Consulting

4.72(
44
)
Approved Pro

Posert Energy Consulting

4.72(
44
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
6 years of experience

At Posert Energy Consulting, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe we can find the sources of high energy bills within an hour or two and set you on a path towards lower energy costs and energy independence. We are committed to eliminating greenhouse gas sources from residences as much as possible which includes our experience that about 2/3rd of the homes we visit have gas line leaks! We are experts, and will always keep you educated about the work process. We look forward to earning your business!

"Pete is fantastic! He called back promptly -- on a holiday -- and fit us in within 24 hrs. He did a home electrical audit, showed us how to read/interpret the smart meter and PG&E website re electrical usage, performed troubleshooting, and narrowed down the problem. Now we can hire an electrician because we know what the issue is! Great guy with a great personality and excellent customer service. Five out of five stars!!!!"

Jennifer L on May 2024

At Posert Energy Consulting, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe we can find the sources of high energy bills within an hour or two and set you on a path towards lower energy costs and energy independence. We are committed to eliminating greenhouse gas sources from residences as much as possible which includes our experience that about 2/3rd of the homes we visit have gas line leaks! We are experts, and will always keep you educated about the work process. We look forward to earning your business!

"Pete is fantastic! He called back promptly -- on a holiday -- and fit us in within 24 hrs. He did a home electrical audit, showed us how to read/interpret the smart meter and PG&E website re electrical usage, performed troubleshooting, and narrowed down the problem. Now we can hire an electrician because we know what the issue is! Great guy with a great personality and excellent customer service. Five out of five stars!!!!"

Jennifer L on May 2024


Avatar for Prosper Construction Development, Inc.

Prosper Construction Development, Inc.

4.88(
38
)
Approved Pro

Prosper Construction Development, Inc.

4.88(
38
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
12 years of experience

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


Avatar for Apollo Energies

Apollo Energies

4.25(
2
)
Approved Pro

Apollo Energies

4.25(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

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-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 California Energy Consultant Service

California Energy Consultant Service

4.93(
94
)

California Energy Consultant Service

4.93(
94
)
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

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


Avatar for Hassler Heating & Air Conditioning

Hassler Heating & Air Conditioning

4.90(
63
)

Hassler Heating & Air Conditioning

4.90(
63
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Hassler Heating and Air Conditioning, Inc. provides exceptional residential heating and cooling services with a focus on improving your home's energy efficiency. We serve the counties of Alameda, Contra Costa and Marin. In retrofitting old systems as well as remodeling projects, Hassler will create a custom system that is visually and aesthetically matched to your home, giving it state-of-the-art technology (such as high efficiency and zoned systems) and a welcome look and feel. Hassler is aware that many homes’ original architectural structure may not accommodate the easy-install, pre-fab systems that many HVAC companies use. Whatever your home comfort needs are, Hassler uses equipment and materials above industry standards including energy efficient options in our installations of heating and cooling systems. Additionally, we install and repair, programmable thermostats, filtration systems, heat pumps, ductless split systems, ducting, water heaters, humidifiers, and more.

"Steve from Hassler was outstanding! He identified a problem we didn't know we had and fixed it, in addition to our annual inspection. He is very personable, too."

Linda L on August 2024

Hassler Heating and Air Conditioning, Inc. provides exceptional residential heating and cooling services with a focus on improving your home's energy efficiency. We serve the counties of Alameda, Contra Costa and Marin. In retrofitting old systems as well as remodeling projects, Hassler will create a custom system that is visually and aesthetically matched to your home, giving it state-of-the-art technology (such as high efficiency and zoned systems) and a welcome look and feel. Hassler is aware that many homes’ original architectural structure may not accommodate the easy-install, pre-fab systems that many HVAC companies use. Whatever your home comfort needs are, Hassler uses equipment and materials above industry standards including energy efficient options in our installations of heating and cooling systems. Additionally, we install and repair, programmable thermostats, filtration systems, heat pumps, ductless split systems, ducting, water heaters, humidifiers, and more.

"Steve from Hassler was outstanding! He identified a problem we didn't know we had and fixed it, in addition to our annual inspection. He is very personable, too."

Linda L on August 2024


Avatar for B A Morrison

B A Morrison

4.77(
79
)

B A Morrison

4.77(
79
)
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

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.


Greiner Heating & Air Conditioning

4.80(
76
)

Greiner Heating & Air Conditioning

4.80(
76
)
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

The team at Greiner Heating and Air is ready to help improve home performance for your home, no matter how complex the project at hand may be. Additional e-mail - [email protected]. Additional phone numbers - (707) 447-1784, (707) 421-1784, (530) 753-1784. Cost is determined by the job. Additional contact name - Patricia Greiner. Additional DBA - Greiner Heating & Air Solar Energy Inc.

"It was excellent. They have quick turn around time. They came to my house same day that I have called them."

Brandon L on September 2020

The team at Greiner Heating and Air is ready to help improve home performance for your home, no matter how complex the project at hand may be. Additional e-mail - [email protected]. Additional phone numbers - (707) 447-1784, (707) 421-1784, (530) 753-1784. Cost is determined by the job. Additional contact name - Patricia Greiner. Additional DBA - Greiner Heating & Air Solar Energy Inc.

"It was excellent. They have quick turn around time. They came to my house same day that I have called them."

Brandon L on September 2020

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Energy Efficiency Auditing questions, answered by experts

If you want a new boiler that’s going to help lower your fuel bills, you should buy one that has a high energy-efficiency rating. For example, a boiler that is rated “A” uses at least 90% of the energy created by the boiler. And in order to enjoy the best performance, it’s important to have it installed properly by a highly-rated tech.

Yes, barndominiums are energy-efficient as long as insulation professionals properly install quality insulation, windows, and doors. Utility bills for barndo living can be up to 50% lower than those for a traditional home.  Make your barndo more energy efficient by working with contractors and HVAC professionals to strategically place windows, doors, and heating/cooling systems. 

R-value is a measurement that dictates how much resistance an insulation material has against heat flow—or how well it can stop heat from coming and going. A higher R-value, which is attributed to thicker and more dense materials, means the better the insulation performs. There is not one universal recommended value. It depends on climate zones. For example, Alaska, which has a naturally cold and arctic climate, has higher R-value recommendations than the hot and humid Hawaii.

Yes, these services often increase home value by preventing moisture-related issues and enhancing the usable space in basements or crawlspaces.

You can determine what size generator you need by listing the various appliances it will power during an outage. Write down the start-up watt usage, and then add them all together. 

A 7,500-watt generator will run your refrigerator, freezer, well pump, and lighting circuits without a problem. However, you’ll need an extra 3,000 to 4,500 watts to run your water heater and another 5,000 to 25,000 watts to run your electric furnace. In these instances, a whole-home generator is your best bet for running your critical equipment.

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

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