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Efficiency 1st

No reviews yet

Efficiency 1st

No reviews yet
3 years of experience

Welcome to Efficiency 1st, your trusted partner in creating a more comfortable, healthier, and energy-efficient home. Our team's deep expertise in building science, coupled with a commitment to sustainability, enables us to take a holistic, performance-based approach to your home's energy retrofit needs. Whether you're looking to enhance your indoor air quality, improve your home's insulation, or simply wish to lower your energy bills, we're here to guide you every step of the way. Together, let's unlock the potential of your home and contribute to a more sustainable future.

Welcome to Efficiency 1st, your trusted partner in creating a more comfortable, healthier, and energy-efficient home. Our team's deep expertise in building science, coupled with a commitment to sustainability, enables us to take a holistic, performance-based approach to your home's energy retrofit needs. Whether you're looking to enhance your indoor air quality, improve your home's insulation, or simply wish to lower your energy bills, we're here to guide you every step of the way. Together, let's unlock the potential of your home and contribute to a more sustainable future.


Avatar for Home Shield Insulation

Home Shield Insulation

4.43(
7
)

Home Shield Insulation

4.43(
7
)
Customers say: Terrific value
3 years of experience

We are new to Angie’s but are experienced with anything insulation related! Home Shield Insulation is proud to bring the benefits of energy efficiency, comfort, and improved air quality to home owners in the Charlotte metro area.

"Poor communication around the amount of dust that the installation would leave or that we would need to remove any belongings from the attic or most importantly the adjoining closet where my wife stored her wedding dress. The install crew was also careless, leaving very noticeable scratches and dings on window and door frames. Management promised to address these repairs and dry clean the wedding dress but gave us the run around for months without addressing any of the issues caused by their crew. What’s arguably worse is we haven’t seen anything close to the amount of savings on energy bills that was promised in our first summer with our new insulation."

Adam G on October 2025

We are new to Angie’s but are experienced with anything insulation related! Home Shield Insulation is proud to bring the benefits of energy efficiency, comfort, and improved air quality to home owners in the Charlotte metro area.

"Poor communication around the amount of dust that the installation would leave or that we would need to remove any belongings from the attic or most importantly the adjoining closet where my wife stored her wedding dress. The install crew was also careless, leaving very noticeable scratches and dings on window and door frames. Management promised to address these repairs and dry clean the wedding dress but gave us the run around for months without addressing any of the issues caused by their crew. What’s arguably worse is we haven’t seen anything close to the amount of savings on energy bills that was promised in our first summer with our new insulation."

Adam G on October 2025


Avatar for RSS Solar

RSS Solar

No reviews yet

RSS Solar

No reviews yet
Free onsite estimate

We make solar simple-- We are dedicated to making solar energy affordable and accessible to everyone-- with ZERO upfront costs.* Your home can become its own tiny power station and generate plenty of reliable energy, all while reducing your electricity bill. Plus, it doesn't hurt that your greener lifestyle will help your state achieve its renewable energy goals.

We make solar simple-- We are dedicated to making solar energy affordable and accessible to everyone-- with ZERO upfront costs.* Your home can become its own tiny power station and generate plenty of reliable energy, all while reducing your electricity bill. Plus, it doesn't hurt that your greener lifestyle will help your state achieve its renewable energy goals.


Avatar for RetroFoam of the Carolinas

RetroFoam of the Carolinas

5.00(
4
)

RetroFoam of the Carolinas

5.00(
4
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

RetroFoam of the Carolinas is an insulation contractor that provides injection and open and closed cell spray foam insulating solutions for existing homes, new homes, and pole barns across the Carolinas and Virginia. Our mission is to help homeowners minimize their energy waste and create more energy-efficient, healthy, quieter homes. RetroFoam of the Carolinas is operated by a fun-loving team of construction professionals with over 25 years of experience in the industry. The team comprises service-minded, problem-solving people that are excited to talk to you at your level of expertise. Happy clients and energizing relationships are what get us up in the morning. We are always quick with a smile, and always excited to talk with anyone about how to make their homes more comfortable.

"The crew from RetroFoam handled our project great from start to finish. The team was very professional and got everything done the way we expected. Would definitely recommend!"

Shaun W on November 2021

RetroFoam of the Carolinas is an insulation contractor that provides injection and open and closed cell spray foam insulating solutions for existing homes, new homes, and pole barns across the Carolinas and Virginia. Our mission is to help homeowners minimize their energy waste and create more energy-efficient, healthy, quieter homes. RetroFoam of the Carolinas is operated by a fun-loving team of construction professionals with over 25 years of experience in the industry. The team comprises service-minded, problem-solving people that are excited to talk to you at your level of expertise. Happy clients and energizing relationships are what get us up in the morning. We are always quick with a smile, and always excited to talk with anyone about how to make their homes more comfortable.

"The crew from RetroFoam handled our project great from start to finish. The team was very professional and got everything done the way we expected. Would definitely recommend!"

Shaun W on November 2021


Avatar for EcoGreen Home Services

EcoGreen Home Services

5.00(
10
)

EcoGreen Home Services

5.00(
10
)
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

Our vision is to create a better tomorrow by offering Plumbing, Electrical, HVAC equipment and indoor air quality products that offers the highest level of efficiency and keeps your home and family safe, clean and comfortable. We hope that you will join us.

"Austin and his partner's professional service was what the doctor ordered. Respectful and courteous,you couldn't ask for better service!"

Anthony J on October 2025

Our vision is to create a better tomorrow by offering Plumbing, Electrical, HVAC equipment and indoor air quality products that offers the highest level of efficiency and keeps your home and family safe, clean and comfortable. We hope that you will join us.

"Austin and his partner's professional service was what the doctor ordered. Respectful and courteous,you couldn't ask for better service!"

Anthony J on October 2025


"We will never use this company again. They were not upfront on their labor charge for a part under warranty and then threatened us to send us to collections when we asked to meet them half way. They also tried selling us an air scrubber yet neglected to tell us the reason we are having a mold issue is because the seal between the house and the unit has holes in it. They also did not put back things moved to get to the unit and crawl space. It is unfortunate that there are companies out there who choose to do business in this manor."

Colleen S on December 2022

Since 2012, Air Tech has offered quality services with professional attention that our clients deserve. Contact us to know more about Air conditioning repair service.

"We will never use this company again. They were not upfront on their labor charge for a part under warranty and then threatened us to send us to collections when we asked to meet them half way. They also tried selling us an air scrubber yet neglected to tell us the reason we are having a mold issue is because the seal between the house and the unit has holes in it. They also did not put back things moved to get to the unit and crawl space. It is unfortunate that there are companies out there who choose to do business in this manor."

Colleen S on December 2022


"They were great to work with and quick, polite and explained the timeline of needing to replace the unit and my repair cost would go towards the replacement."

Susan E on July 2020

Heating & A/C, Energy Efficiency Auditing

"They were great to work with and quick, polite and explained the timeline of needing to replace the unit and my repair cost would go towards the replacement."

Susan E on July 2020


Avatar for Comfort First Heating and Cooling - Charlotte

Comfort First Heating and Cooling - Charlotte

4.67(
121
)

Comfort First Heating and Cooling - Charlotte

4.67(
121
)
Customers say: Super punctual
15 years of experience

If you want to stay cool and comfortable in Charlotte, North Carolina, then the Comfort First team is the one to call! We specialize in AC repair, maintenance, and installation to keep your family happy and healthy in the sweltering southern summers. Since 2010 our customers in Charlotte have been completely satisfied with our state of the art AC repair and maintenance!

"Great. Quick install"

Roger M on July 2024

If you want to stay cool and comfortable in Charlotte, North Carolina, then the Comfort First team is the one to call! We specialize in AC repair, maintenance, and installation to keep your family happy and healthy in the sweltering southern summers. Since 2010 our customers in Charlotte have been completely satisfied with our state of the art AC repair and maintenance!

"Great. Quick install"

Roger M on July 2024



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.

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Energy Efficiency Auditing questions, answered by experts

Leaving lights on raises the electric bill, but not as much as having high-wattage light bulbs. The best way to save on electric costs is to swap your light bulbs to LED or CFL bulbs that use far fewer watts. You can also use smart lights and light switches to control usage via a smartphone or voice-controlled device.

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.

Typically, a local home energy auditor is responsible for performing energy audits. A home energy auditor will conduct one of three energy audits designed by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) to determine the energy efficiency of your home. The auditor often provides analysis that can help guide changes and improvements to your home for better energy efficiency, giving recommendations as necessary.

The number one culprit of high energy bills is older appliances, especially fridges and freezers that are left on all the time. These two appliances tend to last a long time, which is good, but it also means that newer models are usually significantly more energy-efficient due to upgraded technology. The second most common reason for a high bill is heating and air conditioning.

Solar water heating systems are not one-size-fits-all. You'll likely work with a team of experts to get the job done—including solar panel installers, plumbers, and water heater installers. A specialist will help you decide if a passive or active system is best for your local weather, home layout, roof stability, and your budget.

The Rockwell, NC homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.