Top-rated energy efficiency auditors.

Get matched with top energy efficiency auditors in Hanover, NH

Enter your ZIP and get matched with up to 5 pros

Need a pro for your energy efficiency auditing project in Hanover, NH?

Select your specific project to find the pro for you.

Verified Reviews for Energy Efficiency Auditing pros in Hanover, NH

*The Angi rating for Energy Efficiency Auditing companies in Hanover, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

*The HomeAdvisor rating for Energy Efficiency Auditing companies in Hanover, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.

Last update on December 10, 2025

Find Energy efficiency auditors in Hanover

Avatar for Triumph Heating and Cooling LLC

Triumph Heating and Cooling LLC

3.00(
2
)

Triumph Heating and Cooling LLC

3.00(
2
)
Free onsite estimate

Triumph Heating and Cooling LLC is your local trusted service and installation team for anything Heating and Cooling related. We install, Service and Maintain gas/oil heating equipment, air conditioning, water heaters, space heaters, ductless mini splits, and more! Our licensed technicians provide top of the line service to our valued customers, ensuring the job is done right the first time. Call today to schedule your service or install!

"He started great, but went down hill. 5 months to install a new heating system after being told it was 5-6 weeks.I was told he had no idea when he could finish because he started a 92 unit condominium project. On another project they installed an HVAC system with no control board. Lied to continuously about dates. We paid in advance for the work and found out afterward that he fired half the staff (I now know why.) Rather than be upfront about the issues he was facing we told lies. Very frustrating and found Devin to talk like an excon. Say one thing and do another with a very straight face."

John R on July 2023

Triumph Heating and Cooling LLC is your local trusted service and installation team for anything Heating and Cooling related. We install, Service and Maintain gas/oil heating equipment, air conditioning, water heaters, space heaters, ductless mini splits, and more! Our licensed technicians provide top of the line service to our valued customers, ensuring the job is done right the first time. Call today to schedule your service or install!

"He started great, but went down hill. 5 months to install a new heating system after being told it was 5-6 weeks.I was told he had no idea when he could finish because he started a 92 unit condominium project. On another project they installed an HVAC system with no control board. Lied to continuously about dates. We paid in advance for the work and found out afterward that he fired half the staff (I now know why.) Rather than be upfront about the issues he was facing we told lies. Very frustrating and found Devin to talk like an excon. Say one thing and do another with a very straight face."

John R on July 2023

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.

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!

Window Improvement Masters

No reviews yet

Window Improvement Masters

No reviews yet
14 years of experience

Window Improvement Masters is dedicated to providing the building owners of northern New England with high-quality, cost-effective, and environmentally-sound products and services to improve the efficiency, operation, durability, and enjoyment of their windows.

Window Improvement Masters is dedicated to providing the building owners of northern New England with high-quality, cost-effective, and environmentally-sound products and services to improve the efficiency, operation, durability, and enjoyment of their windows.

Starr HVAC & Refrigeration LLC

No reviews yet

Starr HVAC & Refrigeration LLC

No reviews yet
15 years of experience

Starr HVAC & Refrigeration LLC is your heating and cooling service provider covering New Hampshire, Maine, and selected areas of Massachusetts. We are a family run company based out of Newport, NH. We thrive on providing quality customer service. We currently accept Cash, Check and all Major Credit Cards, and can offer financing where applicable.

Starr HVAC & Refrigeration LLC is your heating and cooling service provider covering New Hampshire, Maine, and selected areas of Massachusetts. We are a family run company based out of Newport, NH. We thrive on providing quality customer service. We currently accept Cash, Check and all Major Credit Cards, and can offer financing where applicable.

DEFIANCE ELECTRIC INC

No reviews yet

DEFIANCE ELECTRIC INC

No reviews yet

Defiance Electric, LLC is composed of Defiance Electric and partner company Crossover Inc, working as one team to provide customers with the most comprehensive commercial electrical and communications service. Our areas of expertise in addition to our services include; Energy Audits and Solutions, Data Center/Uninterruptible Power Supply (UPS) Systems, Fire Alarm Systems, and bucket truck services. Defiance Electric, LLC was started in 1978 by my father. I spent my formative years working summers as an electrical apprentice, and went on to receive a Bachelor of Science degree in Electrical Engineering from the University of New Hampshire in 2006. I have since moved back home (never thought I'd see the day), and am committed to providing the best services to our clients and most importantly, our community. I feel strongly and that our teams engineering and installation capabilities can provide solutions to any infrastructure challenges our clients may face. Give us a call or send us a note!

Defiance Electric, LLC is composed of Defiance Electric and partner company Crossover Inc, working as one team to provide customers with the most comprehensive commercial electrical and communications service. Our areas of expertise in addition to our services include; Energy Audits and Solutions, Data Center/Uninterruptible Power Supply (UPS) Systems, Fire Alarm Systems, and bucket truck services. Defiance Electric, LLC was started in 1978 by my father. I spent my formative years working summers as an electrical apprentice, and went on to receive a Bachelor of Science degree in Electrical Engineering from the University of New Hampshire in 2006. I have since moved back home (never thought I'd see the day), and am committed to providing the best services to our clients and most importantly, our community. I feel strongly and that our teams engineering and installation capabilities can provide solutions to any infrastructure challenges our clients may face. Give us a call or send us a note!

Cota and Cota Heating Fuels

No reviews yet

Cota and Cota Heating Fuels

No reviews yet
84 years of experience

Cota & Cota is a third generation Vermont family home heating provider in southern Vermont and southwestern New Hampshire. We are proud of our Vermont heritage and the effort we have put forth over 68 years to gain your confidence in us. We are committed to continue our best efforts on your behalf.

Cota & Cota is a third generation Vermont family home heating provider in southern Vermont and southwestern New Hampshire. We are proud of our Vermont heritage and the effort we have put forth over 68 years to gain your confidence in us. We are committed to continue our best efforts on your behalf.

Cota & Cota Heating Fuels

5.00(
1
)

Cota & Cota Heating Fuels

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

Cota & Cota is a third generation Vermont family home heating provider in southern Vermont and southwestern New Hampshire. We are proud of our Vermont heritage and the effort we have put forth over 68 years to gain your confidence in us. We are committed to continue our best efforts on your behalf.

Cota & Cota is a third generation Vermont family home heating provider in southern Vermont and southwestern New Hampshire. We are proud of our Vermont heritage and the effort we have put forth over 68 years to gain your confidence in us. We are committed to continue our best efforts on your behalf.

Showing 1-10 of 17
Energy Efficiency Auditing questions, answered by experts

No, it isn’t necessary to have energy-efficient windows. However, if you care about your energy bill and making your windows more energy efficient, fixing any heat, UV, or air transfer issues is an excellent way to lower your bills and keep your house cooler in the summer and warmer in the winter.

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.

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. 

Yes, skylights can affect a home’s energy efficiency, either positively or negatively. Properly installed, energy-efficient skylights with Low-E coatings, double glazing, and UV-blocking glass can help regulate indoor temperatures and reduce heating and cooling costs. However, poorly insulated or older skylights can contribute to heat loss in winter and excess heat gain in summer, lowering overall energy efficiency.

A home energy audit costs about $420 on average, ranging from about $100 to $2,250 or more. Cost factors include the size of your home, the type of testing, and the thoroughness of the audit. A Level 1 walk-through inspection will cost between $150 and $200 for the auditor to point out inefficiencies in your home. On the other hand, a more thorough Level 3 audit with testing and a detailed report will cost about $900.

The Hanover, NH homeowners’ guide to energy efficiency auditing services

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

See all articles

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"