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Find Energy efficiency auditors in Thousand Oaks

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 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 JO Solar Designs

JO Solar Designs

New on AngiNew on Angi
Approved Pro

JO Solar Designs

New on AngiNew on Angi
Approved Pro
7 years of experience
Free onsite estimate

JO Solar Designs is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

JO Solar Designs is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.


Avatar for E.Z. Energy Solutions

E.Z. Energy Solutions

3.90(
10
)

E.Z. Energy Solutions

3.90(
10
)
Customers say: Quality work
17 years of experience

One of Southern California's favorite Solar Energy Expert and Home Improvement/ Remodeling Contractor in Southern California! We provide you with clean, efficient and affordable solutions customized to your needs. Our highly skilled technicians will be with you throughout the entire process to help you secure your Energy Future and Home Remodeling dreams! When you decide to go solar or remodel part or all of your home or commercial project, you need a team you can trust to create top-quality work, with consistent communication and a great reputation E.Z. Energy Solutions has worked hard since our founding in 2008 to become the company we are today! Services include Solar Panels, Home Solar, Commercial Solar, Insulation, Solar Electric, Solar Panel Installation, Complete Residential and Commercial Remodeling, Kitchen Remodeling, Bathroom Remodeling, Custom Accessory Dwelling Unit, Garage Conversion and Addition, Room Addition, Interior and Exterior Paint, Roofing, Solar Panel Installation, Repair, Maintenance, Energy Efficiency Consultations and Products, AC;

"My panels haven’t work for the last 8 months And I’m paying for them and paying Edison for electricity., we all could have mistakes but I think 8 months is just ridiculous time very very frustrated I don’t know what to do anymore"

Oscar L on September 2022

One of Southern California's favorite Solar Energy Expert and Home Improvement/ Remodeling Contractor in Southern California! We provide you with clean, efficient and affordable solutions customized to your needs. Our highly skilled technicians will be with you throughout the entire process to help you secure your Energy Future and Home Remodeling dreams! When you decide to go solar or remodel part or all of your home or commercial project, you need a team you can trust to create top-quality work, with consistent communication and a great reputation E.Z. Energy Solutions has worked hard since our founding in 2008 to become the company we are today! Services include Solar Panels, Home Solar, Commercial Solar, Insulation, Solar Electric, Solar Panel Installation, Complete Residential and Commercial Remodeling, Kitchen Remodeling, Bathroom Remodeling, Custom Accessory Dwelling Unit, Garage Conversion and Addition, Room Addition, Interior and Exterior Paint, Roofing, Solar Panel Installation, Repair, Maintenance, Energy Efficiency Consultations and Products, AC;

"My panels haven’t work for the last 8 months And I’m paying for them and paying Edison for electricity., we all could have mistakes but I think 8 months is just ridiculous time very very frustrated I don’t know what to do anymore"

Oscar L on September 2022


Avatar for Sunlux Energy

Sunlux Energy

4.92(
107
)

Sunlux Energy

4.92(
107
)
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Sunlux is a roofing and solar energy provider servicing southern California that provides a variety of options in order to help you find what best fits your needs. We deliver the tools, support and advice you need to make going solar simple. We handle everything from paperwork to maintenance, so all you have to worry about is what to do with the savings. We guarantee installation, parts and maintenance for every job. Your satisfaction is our top priority and we’ll be here for you through every step of your solar and roofing journey. Ready to talk to our team? Please call us today!

"We were in the market for a solar system from a company that was reliable and we could trust. After doing lots of research we asked Sunlux to be our solar provider. They were very honest with their prices (they were on one of the lowest) and their customer service has been excellent? Since we did not know a lot about solar systems, they educated us to be smart consumers and gave us options and choices that met our needs. We can truly say, we are very happy with Sunlux and would recommend them to others as well."

Kevin B on February 2020

Sunlux is a roofing and solar energy provider servicing southern California that provides a variety of options in order to help you find what best fits your needs. We deliver the tools, support and advice you need to make going solar simple. We handle everything from paperwork to maintenance, so all you have to worry about is what to do with the savings. We guarantee installation, parts and maintenance for every job. Your satisfaction is our top priority and we’ll be here for you through every step of your solar and roofing journey. Ready to talk to our team? Please call us today!

"We were in the market for a solar system from a company that was reliable and we could trust. After doing lots of research we asked Sunlux to be our solar provider. They were very honest with their prices (they were on one of the lowest) and their customer service has been excellent? Since we did not know a lot about solar systems, they educated us to be smart consumers and gave us options and choices that met our needs. We can truly say, we are very happy with Sunlux and would recommend them to others as well."

Kevin B on February 2020


Avatar for All Four Seasons AC & Heating

All Four Seasons AC & Heating

4.79(
280
)

All Four Seasons AC & Heating

4.79(
280
)
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers

Established in 2000, All Four Seasons has distinguished itself as a commercial, residential and industrial air conditioning and heating industry. As a family owned and operated company, fully licensed, bonded and insured, we strive to always exceed the expectations of our customers through integrity-based service and a high moral work ethic. Honesty, integrity and customer satisfaction are the foundations upon which we operate. All of our employees and technicians are handpicked and trained to the highest level of expertise and professionalism. In addition, we are EPA and OSHA certified. We certainly understand that you have many choices in HVAC service solutions, and we invite you to experience the All Four Seasons difference. From the most complex installations, to routine service and maintenance, you deserve to be comfortable at home or work, and All Four Seasons is there for you all year round. Give us a call today.

"On time; thorough; friendly; communicated with me frequently before my appointment. Definitely recommend them and i will use them in the future."

Mark L on December 2024

Established in 2000, All Four Seasons has distinguished itself as a commercial, residential and industrial air conditioning and heating industry. As a family owned and operated company, fully licensed, bonded and insured, we strive to always exceed the expectations of our customers through integrity-based service and a high moral work ethic. Honesty, integrity and customer satisfaction are the foundations upon which we operate. All of our employees and technicians are handpicked and trained to the highest level of expertise and professionalism. In addition, we are EPA and OSHA certified. We certainly understand that you have many choices in HVAC service solutions, and we invite you to experience the All Four Seasons difference. From the most complex installations, to routine service and maintenance, you deserve to be comfortable at home or work, and All Four Seasons is there for you all year round. Give us a call today.

"On time; thorough; friendly; communicated with me frequently before my appointment. Definitely recommend them and i will use them in the future."

Mark L on December 2024


Avatar for Aladdin Air Conditioning & Heating Inc

Aladdin Air Conditioning & Heating Inc

4.85(
319
)

Aladdin Air Conditioning & Heating Inc

4.85(
319
)
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

Aladdin Heating & Air Conditioning is Award winning. At Aladdin Air Conditioning & Heating, Inc., our sole goal is to BE the best. That means providing the right equipment for your needs; installing it correctly, the first time, on time; while exceeding your expectations by every measure. Our mission is to provide top quality heating and air conditioning products and exceptional service with a 100% satisfaction guarantee. We achieve this through: A hand-picked, high-quality workforce, Superior technician training, company-wide commitment to integrity, highest-quality service, and unwavering professionalism, placing quality and the customer’s wishes as our top priorities, we do what we say…when we say we’ll do it! When it comes to air conditioning and heating, installation is more important than equipment. No matter how much you spend on top-of-the-line hardware, a poor installation will cost you more in the long run. We know that there are other choices out there. At Aladdin, we strive to make your choice simple, by setting ourselves apart from our competitors. We do this through: careful selection of employees, constant pursuit of improvement in knowledge and skills, Insistence on the highest quality installations and service delivered professionally and on-time, Integrity in pricing, 100% Satisfaction Guarantee – giving you peace of mind that you have chosen the best company to take care of your comfort needs, Did You Know – that when installing HVAC equipment, the manufacturing process is actually finished at your home? What you are purchasing are the “components.” What we do is put those components together to create a finished product at your site. All employees are drug tested and background screened. Carrier Financing - Six-month deferred interest OAC.

"Horrible. Charged father (80 y/o 100% combat disabled vet, widowed) $ 17k for system because 30 year old one leaked water from pan. New one with "leak proof" system that he paid extra for, leaked in ceiling. Was charged service call for warranty inspection; tech said no problem with part (pump) told us pump was under warranty but not bad- said they charge $ 800 for pump, but you can find a tech "to change it on the side for less than $ 100 because the part is about $ 40"; tech broke popcorn ceiling and company tried to send out person to fix without testing for asbestos as required by AQMD- ultimately found out the person they wanted to send ALSO has a suspended license. Two weeks after breaking the ceiling and charging for warranty inspection- it has gotten hot again. AC turned on and- SAME problem is BACK. Just now after $ 17k for the new unit and $ 145 to inspect part for warranty repair-service call- just vacuumed the spilled water."

Ken H on October 2024

Aladdin Heating & Air Conditioning is Award winning. At Aladdin Air Conditioning & Heating, Inc., our sole goal is to BE the best. That means providing the right equipment for your needs; installing it correctly, the first time, on time; while exceeding your expectations by every measure. Our mission is to provide top quality heating and air conditioning products and exceptional service with a 100% satisfaction guarantee. We achieve this through: A hand-picked, high-quality workforce, Superior technician training, company-wide commitment to integrity, highest-quality service, and unwavering professionalism, placing quality and the customer’s wishes as our top priorities, we do what we say…when we say we’ll do it! When it comes to air conditioning and heating, installation is more important than equipment. No matter how much you spend on top-of-the-line hardware, a poor installation will cost you more in the long run. We know that there are other choices out there. At Aladdin, we strive to make your choice simple, by setting ourselves apart from our competitors. We do this through: careful selection of employees, constant pursuit of improvement in knowledge and skills, Insistence on the highest quality installations and service delivered professionally and on-time, Integrity in pricing, 100% Satisfaction Guarantee – giving you peace of mind that you have chosen the best company to take care of your comfort needs, Did You Know – that when installing HVAC equipment, the manufacturing process is actually finished at your home? What you are purchasing are the “components.” What we do is put those components together to create a finished product at your site. All employees are drug tested and background screened. Carrier Financing - Six-month deferred interest OAC.

"Horrible. Charged father (80 y/o 100% combat disabled vet, widowed) $ 17k for system because 30 year old one leaked water from pan. New one with "leak proof" system that he paid extra for, leaked in ceiling. Was charged service call for warranty inspection; tech said no problem with part (pump) told us pump was under warranty but not bad- said they charge $ 800 for pump, but you can find a tech "to change it on the side for less than $ 100 because the part is about $ 40"; tech broke popcorn ceiling and company tried to send out person to fix without testing for asbestos as required by AQMD- ultimately found out the person they wanted to send ALSO has a suspended license. Two weeks after breaking the ceiling and charging for warranty inspection- it has gotten hot again. AC turned on and- SAME problem is BACK. Just now after $ 17k for the new unit and $ 145 to inspect part for warranty repair-service call- just vacuumed the spilled water."

Ken H on October 2024


Joe Sepe Heating & Air Conditioning

4.89(
196
)

Joe Sepe Heating & Air Conditioning

4.89(
196
)
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

With over 33 years of experience in the HVAC trade, Joe Sepe Heating and Air Conditioning has been proudly serving the San Fernando Valley and most of Ventura County. We specialize in residential and light commercial. Family owned and operated we are fully licensed, insured and bonded. Our technicians are certified to repair, service, and install all brands of Heating and Air Conditioning Equipment.

"My AC stopped working in the middle of the summer during the 100 plus degree valley heat. I called multiple companies and nobody could come for days. I called Joe Sepe Heating & Air Conditioning and all their techs were booked but the owner Joe was so nice that he came himself due the urgency. He was professional, honest, knowledgeable and friendly. Replaced the part on the condenser for a reasonable price and even gave me tips to prevent future issues. Thanks Joe!"

Jon D on December 2020

With over 33 years of experience in the HVAC trade, Joe Sepe Heating and Air Conditioning has been proudly serving the San Fernando Valley and most of Ventura County. We specialize in residential and light commercial. Family owned and operated we are fully licensed, insured and bonded. Our technicians are certified to repair, service, and install all brands of Heating and Air Conditioning Equipment.

"My AC stopped working in the middle of the summer during the 100 plus degree valley heat. I called multiple companies and nobody could come for days. I called Joe Sepe Heating & Air Conditioning and all their techs were booked but the owner Joe was so nice that he came himself due the urgency. He was professional, honest, knowledgeable and friendly. Replaced the part on the condenser for a reasonable price and even gave me tips to prevent future issues. Thanks Joe!"

Jon D on December 2020


Avatar for California Construction Center

California Construction Center

4.77(
198
)

California Construction Center

4.77(
198
)
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

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


Avatar for HERS Rater LA/HouseSmart Green Solutions

HERS Rater LA/HouseSmart Green Solutions

5.00(
24
)

HERS Rater LA/HouseSmart Green Solutions

5.00(
24
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

HERS Rater LA provides quick, efficient and reasonably priced HERS (Home Energy Rating System [Title-24] field verifications for heating, ventilating and air conditioning (HVAC) systems in both residences and light commercial buildings. HERS Rater LA is certified to perform field verifications on new construction and additions. We also provide Air Balancing for new and redesigned duct systems in residential and commercial buildings.

"Dav is clearly an EXPERT in what he does. He imparted a TON of valuable information and knowledge to my husband and I both DURING our Home Energy Audit, as well as in the report which we opted to have him do. This information is going to be a superb guide as we prioritize & move forward with home improvement projects that will increase our home's efficiency, conserve energy, etc."

Dana B on May 2019

HERS Rater LA provides quick, efficient and reasonably priced HERS (Home Energy Rating System [Title-24] field verifications for heating, ventilating and air conditioning (HVAC) systems in both residences and light commercial buildings. HERS Rater LA is certified to perform field verifications on new construction and additions. We also provide Air Balancing for new and redesigned duct systems in residential and commercial buildings.

"Dav is clearly an EXPERT in what he does. He imparted a TON of valuable information and knowledge to my husband and I both DURING our Home Energy Audit, as well as in the report which we opted to have him do. This information is going to be a superb guide as we prioritize & move forward with home improvement projects that will increase our home's efficiency, conserve energy, etc."

Dana B on May 2019

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Energy Efficiency Auditing questions, answered by experts

There are a few ways to reduce your electricity bills if you use window AC units to keep cool. Set the unit temperature at least 1 degree higher than it is currently to reduce costs. Keep the unit clean for it to run efficiently. You may want to hire a window AC specialist near you to inspect the unit once a year and keep it in tip-top shape.

Homeowners may qualify for an HVAC tax credit if they install an ENERGY STAR®-certified HVAC system that exceeds the energy efficiency minimum standards:

  • Split-System AC: 16 SEER2

  • Packaged AC: 15.2 SEER2 and 11.5 EER2

  • Ducted Split Heat Pump: 15.2 SEER2, 7.8 HSPF2, and 11.7 EER2 

  • Packaged Heat Pump: 15.2 SEER2, 7.2 HSPF2, and 10.6 EER2

  • Mini-Split System: 16 SEER2, 9 HSPF2, and 12 EER2

You can claim up to 30% of the cost of the job, subject to maximums.

Expert installation optimizes insulation properties, cutting energy costs and enhancing home comfort year-round.

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.

String lights require electricity, but not an excessive amount, especially when compared to other lighting fixtures. LED rope lights, for instance, consume around one watt per foot. Running six or seven light strings simultaneously should only cost you around $10 to $15 each month. You can save even more money by remembering to turn off your lights during daylight hours. 

The Thousand Oaks, 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.

What do you need done? We’ll find top pros.
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