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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.


John Dittenhoefer

5.00(
7
)

John Dittenhoefer

5.00(
7
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a local family-based business serving the central coast for 20 years. We offer heating, ventilation and air-conditioning services. We do not currently have any deals because we constantly underbid all other companies in the area. Please let us give you a free estimate and consider us for your heating needs!

"excellently! Dittenhoefer found the problem immediately, whereas another heating company could not. Dittenhoefer did and fixed it! Also responded quickly to my request."

Stacie D on March 2021

We are a local family-based business serving the central coast for 20 years. We offer heating, ventilation and air-conditioning services. We do not currently have any deals because we constantly underbid all other companies in the area. Please let us give you a free estimate and consider us for your heating needs!

"excellently! Dittenhoefer found the problem immediately, whereas another heating company could not. Dittenhoefer did and fixed it! Also responded quickly to my request."

Stacie D on March 2021


HERS RATERS, INC.

No reviews yet

HERS RATERS, INC.

No reviews yet

Trained in providing the highest level of customer service with extensive knowledge of HOME ENERGY RATING SYSTEMS, our team of HERS Raters are trained to perform independent energy efficiency field verification's and/or diagnostic tests to determine energy efficiency levels.

Trained in providing the highest level of customer service with extensive knowledge of HOME ENERGY RATING SYSTEMS, our team of HERS Raters are trained to perform independent energy efficiency field verification's and/or diagnostic tests to determine energy efficiency levels.


Allstate Spray Foam Insulaiton

5.00(
1
)

Allstate Spray Foam Insulaiton

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a family-owned company that has been in the spray foam business for over 20 years serving Fresno, Clovis, Bakersfield, Oildale and surrounding areas of Visalia California for many years. Spray polyurethane foam (SPF) is a spray-applied plastic that is widely used to insulate buildings and seal cracks and gaps, making a building or home more energy-efficient and comfortable. SPF insulation is known to resist heat transfer extremely well, and it offers a highly effective solution in reducing unwanted air infiltration through cracks, seams, and joints.Attic Spray Foam Insulation Did you know you could be losing up to 40% of your homes energy through the attic alone?! Using Spray Foam Insulation in your Attic is the only solution you should be considering to remedy your attic’s insulation needs. The attic is the part of the house which is easily over looked, but it is also the part of the home that is most susceptible to the external temperature changes. If you attic is not properly insulated it can lead to huge amounts of energy loss and the fluctuation of the temperature within your home. Proper attic spray foam insulation serves as the key to limit and control the effect of the external temperatures on your homes interior environment, monthly energy bills and energy loss.

"Rusty Schrader the owner/operator is a life saver and went out of his way to help me. He is very knowledgeable in the business and I highly recommend this company. You won’t find anyone more honest, helpful, and responsive so don’t even bother looking"

Pat F on June 2020

We are a family-owned company that has been in the spray foam business for over 20 years serving Fresno, Clovis, Bakersfield, Oildale and surrounding areas of Visalia California for many years. Spray polyurethane foam (SPF) is a spray-applied plastic that is widely used to insulate buildings and seal cracks and gaps, making a building or home more energy-efficient and comfortable. SPF insulation is known to resist heat transfer extremely well, and it offers a highly effective solution in reducing unwanted air infiltration through cracks, seams, and joints.Attic Spray Foam Insulation Did you know you could be losing up to 40% of your homes energy through the attic alone?! Using Spray Foam Insulation in your Attic is the only solution you should be considering to remedy your attic’s insulation needs. The attic is the part of the house which is easily over looked, but it is also the part of the home that is most susceptible to the external temperature changes. If you attic is not properly insulated it can lead to huge amounts of energy loss and the fluctuation of the temperature within your home. Proper attic spray foam insulation serves as the key to limit and control the effect of the external temperatures on your homes interior environment, monthly energy bills and energy loss.

"Rusty Schrader the owner/operator is a life saver and went out of his way to help me. He is very knowledgeable in the business and I highly recommend this company. You won’t find anyone more honest, helpful, and responsive so don’t even bother looking"

Pat F on June 2020


Avatar for USA Alarm Service, Inc

USA Alarm Service, Inc

No reviews yet

USA Alarm Service, Inc

No reviews yet
29 years of experience

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.


Avatar for COREfficiency, Inc.

COREfficiency, Inc.

4.00(
2
)

COREfficiency, Inc.

4.00(
2
)
Customers say: Quality work
9 years of experience

We are energy-efficient professionals who specialize in QuietCool Whole-House Fan sales and installations, as well as other energy-efficient products including LED lighting, electrical upgrades, attic venting, and more!

"Overall,the work that Blake and his foreman,Travis did looks good and appears professional. We love the dimmable light output and we appreciate the lighting solution they suggested for the utility room. What I had to go through to get the job done is why I would not hire the business,Corefficiency again. Blake and Travis were very polite,easy to work with, professional men while on the job. Prior to the job,Blake seemed to have difficulty following up with communication responsibilities.We weren't hearing from him and were at the point thinking that he was just blowing us off,leaving us hanging. When I would call,he would come up with excuses that would put off our project until finally I had enough. He eventually convinced me that he wanted to do the job. The date was set (again) and the job accomplished."

Melissa M on July 2018

We are energy-efficient professionals who specialize in QuietCool Whole-House Fan sales and installations, as well as other energy-efficient products including LED lighting, electrical upgrades, attic venting, and more!

"Overall,the work that Blake and his foreman,Travis did looks good and appears professional. We love the dimmable light output and we appreciate the lighting solution they suggested for the utility room. What I had to go through to get the job done is why I would not hire the business,Corefficiency again. Blake and Travis were very polite,easy to work with, professional men while on the job. Prior to the job,Blake seemed to have difficulty following up with communication responsibilities.We weren't hearing from him and were at the point thinking that he was just blowing us off,leaving us hanging. When I would call,he would come up with excuses that would put off our project until finally I had enough. He eventually convinced me that he wanted to do the job. The date was set (again) and the job accomplished."

Melissa M on July 2018


Avatar for NRG Clean Power

NRG Clean Power

4.58(
43
)

NRG Clean Power

4.58(
43
)
Customers say: Terrific value
25 years of experience

NRG Clean Power is California’s leading clean power provider. We leverage over 30 years of superior customer service installing solar from the south of San Diego to the northern border with Oregon. In other words, regardless of where you are in California, we can help you make the switch to solar! Not only do we offer top-tier solar services, we are also a total home performance company, devoted to sustainability and energy efficiency. We offer fully customized home and business solar installations with battery backup capabilities. We do not service solar systems that we did not install. We believe the future is clean, renewable energy and with your help we are committed to creating it together. Customer satisfaction is a crucial aspect and the cornerstone of our business. As a result, we have earned the prestigious Diamond Certification 4 years in a row, along with the 2019 Angie’s List Super Service Award. NRG Clean Power offers the finest solar products at the best rates with finance options for everyone. We will be with you every step of the way and for years to come. Check out our promos to take advantage of our best deals. And ask about our Referral Program that allows customers like you to earn cash bonuses for referring friends and family!

"No doubt they hire great installation people, but their communication and honoring their quotes has little to be desired. I will elaborate. I was given a quote, left on my voicemail. I responded the next day letting NRG know I accepted their quote. 1 week later I received a phone call telling me they wouldn't honor the quote give, and they cited the reasons as Tarif's. This was back in April 2025. I still went with NRG, albeit at a$1000.00 increase. The second reason I wouldn't recommend this company, and this for me is the final straw, after installing my solar NRG didn't let me know I needed to have an ESR release, in layman's terms this is necessary for your power company to accept your new solar system. I found out this information when they contacted me in August 2025. NEG blamed the company who upgraded my Electrical Panel. NRG INSTALLED MY SOLAR AFTER THE PANEL WAS UPGRADED. Since this company doesn't communicate with its clients I would say go with another company."

Daniel S on August 2025

NRG Clean Power is California’s leading clean power provider. We leverage over 30 years of superior customer service installing solar from the south of San Diego to the northern border with Oregon. In other words, regardless of where you are in California, we can help you make the switch to solar! Not only do we offer top-tier solar services, we are also a total home performance company, devoted to sustainability and energy efficiency. We offer fully customized home and business solar installations with battery backup capabilities. We do not service solar systems that we did not install. We believe the future is clean, renewable energy and with your help we are committed to creating it together. Customer satisfaction is a crucial aspect and the cornerstone of our business. As a result, we have earned the prestigious Diamond Certification 4 years in a row, along with the 2019 Angie’s List Super Service Award. NRG Clean Power offers the finest solar products at the best rates with finance options for everyone. We will be with you every step of the way and for years to come. Check out our promos to take advantage of our best deals. And ask about our Referral Program that allows customers like you to earn cash bonuses for referring friends and family!

"No doubt they hire great installation people, but their communication and honoring their quotes has little to be desired. I will elaborate. I was given a quote, left on my voicemail. I responded the next day letting NRG know I accepted their quote. 1 week later I received a phone call telling me they wouldn't honor the quote give, and they cited the reasons as Tarif's. This was back in April 2025. I still went with NRG, albeit at a$1000.00 increase. The second reason I wouldn't recommend this company, and this for me is the final straw, after installing my solar NRG didn't let me know I needed to have an ESR release, in layman's terms this is necessary for your power company to accept your new solar system. I found out this information when they contacted me in August 2025. NEG blamed the company who upgraded my Electrical Panel. NRG INSTALLED MY SOLAR AFTER THE PANEL WAS UPGRADED. Since this company doesn't communicate with its clients I would say go with another company."

Daniel S on August 2025


Solar Wolf Energy

2.00(
2
)

Solar Wolf Energy

2.00(
2
)
10 years of experience

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!


Zoltan Shapiro

No reviews yet

Zoltan Shapiro

No reviews yet
22 years of experience

If there's a problem with a computer, I can fix it. I have a great history of successes and good work behind me, and have been ranked #1 nationally at the skill of fixing/diagnosing computer hardware and software. I also have a comprehensive knowledge of Home Media systems and can consult with you, organize, wire, and fully set up a Home Theater to your exact standards. I can build custom computers. I am very good with education and could train an untrained user on how to perform tasks on computers of various types without issue. I can even make custom solutions for certain scenarios. I can also replace parts on smartphones, given that it is openable and doable (some are very glued together nowadays and taking them apart destroys the screen, but otherwise, I can.) Home button on your iPhone been bugging you? I got you covered.

If there's a problem with a computer, I can fix it. I have a great history of successes and good work behind me, and have been ranked #1 nationally at the skill of fixing/diagnosing computer hardware and software. I also have a comprehensive knowledge of Home Media systems and can consult with you, organize, wire, and fully set up a Home Theater to your exact standards. I can build custom computers. I am very good with education and could train an untrained user on how to perform tasks on computers of various types without issue. I can even make custom solutions for certain scenarios. I can also replace parts on smartphones, given that it is openable and doable (some are very glued together nowadays and taking them apart destroys the screen, but otherwise, I can.) Home button on your iPhone been bugging you? I got you covered.


BarrierEnergy Associates

No reviews yet

BarrierEnergy Associates

No reviews yet
14 years of experience

Serving homeowners, buyers, builders and specialty trades we perform State HERS Title-24 verification testing for refrigeration, furnace, ducting, insulation, and all 'energy efficiency' inspections. We also provide HERS "Whole House Rating" for FHA EEM, US EPA Energy Star for Homes and NSHP PV Solar. Ask us about EnergyUpgradeCA, County and Municipal rebates, or about HVAC, Solar, Inso, or related residential EE/AE installation and even non-residential/commercial EE Audits to ASHRAE standards.

Serving homeowners, buyers, builders and specialty trades we perform State HERS Title-24 verification testing for refrigeration, furnace, ducting, insulation, and all 'energy efficiency' inspections. We also provide HERS "Whole House Rating" for FHA EEM, US EPA Energy Star for Homes and NSHP PV Solar. Ask us about EnergyUpgradeCA, County and Municipal rebates, or about HVAC, Solar, Inso, or related residential EE/AE installation and even non-residential/commercial EE Audits to ASHRAE standards.

Showing 1-10 of 27
Energy Efficiency Auditing questions, answered by experts

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.

While many states require all new construction to undergo blower door tests, it’s not a requirement for existing homes. But in both cases, a blower test helps confirm that the contractor has sealed the exterior, that the type of ductwork installed is functioning properly, and that your home is as efficient as possible.

Dehumidifiers typically use 300 to 700 watts of electricity per hour, whereas portable dehumidifiers use about 40 watts per hour. The exact amount of electricity your dehumidifier will generate depends on its capacity and energy efficiency. Generally, higher-capacity dehumidifiers generate more electricity than lower-capacity units, but they also usually have better energy efficiency over the long run.

HVAC systems use the most household electricity. This major and essential system is responsible for heating and cooling your home all year round. Since they operate for a significant amount during the day, it consumes more energy than other appliances. 

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.

The Shandon, 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.