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TRUSTED BY WINDHAM, NH HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon14
    Verified energy efficiency auditing services reviews

Top-Rated Energy efficiency auditors in Windham - Updated Nov 2026

Avatar for AVID Energy Solutions
AVID Energy Solutions
4.9(
19
)
Home Energy AuditEnergy Audit - For Business

Serving Windham, NH and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"I recently had my attic insulated by this company and had a great experience from start to finish. The entire process, from the initial energy audit to customer service and the final installation, was smooth, professional, and well organized. The crew was incredibly kind, hardworking, and patient with all of my questions while they were on site. You can really tell this is a business with a family feel — everyone treated us with care and respect, and it made the whole experience much more comfortable. I would recommend."
92 neighbors recently requested a quote
Avatar for Gabriel Hahn
Gabriel Hahn
New to Angi
Home Energy Audit

Serving Windham, NH and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Credit card accepted

I conduct energy audit tests for homes, whether they are colonial or brand new construction. I can recommend you various forms of weathersealant, thermal wrappings, and storm window techniques, saving you thousands in the form of long-term heat insulation tech-forward solutions.

Dr. Energy Saver
3.1(
23
)
Home Energy Audit

Serving Windham, NH and surrounding areas

In business since 1994

Free estimates

Warranties offered

"My project has not started and is scheduled for middle of May. My rating at this time is for the overall interest shown from the beginning. Examples, I was immediately contacted to set up an appointment to review my project. This lasted two hours going over everything from top to bottom. Included was what is called a blower door energy audit. Plus other devices used to show where much energy was being lost/wasted. A lot of effort and feedback was provided many situations were pointed out to me in order that the job be completed professionally."
 Almost Done
Our double contoured Window
 Sunrise Replacement Windows
 The old window that was Leaking Air
 Here's a closer look at the SuperDeck and how it

+24

Recommended by83%of homeowners
sunder energy
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Windham, NH and surrounding areas

In business since 2020

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Building Alternatives Inc
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Windham, NH and surrounding areas

In business since 1986

Free estimates

We are independent; we work for you the home owner. Many of our competitors work for suppliers and may only offer you one solution, because that is what they sell. They also may not have the breadth of knowledge (we have 30+ years) to offer you all the options you need to make a decision. We are NOT owned by a trade or supplier, thus we will provide you all the options you need to effectively make your home more energy efficient \nWe have considerable experience in building energy efficient homes and in using the different technologies, modular, timberframe. SIPS, ICF and 2x6 panelized to build a home. This experience makes it easy to identify problem that are caused by the specific construction. Without this experience opportunities will be missed. We will recommend renewable energy options for your new or remolded green home. \n \nBBB - Member in Excellent standing from 1988 to present \nManchester Chamber of Commerce - Member in Ecellent standing from 1987 to present \n

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Energy Efficiency Auditing FAQs, answered by experts

Home power is measured in kilowatt-hours, commonly expressed as kWh. The average home uses between 800 and 1,000 kWh per month. Peak usage (and highest bills) occurs in the middle of summer and the depths of winter. Keeping on top of your usage during these crucial months will lower your annual average usage considerably. 

Wood windows fall in the middle of the window frame materials when it comes to energy efficiency. They’re more insulating than aluminum and vinyl, but they aren’t as efficient as fiberglass or composite frames. If you love the look and lifespan of wood windows and want to maximize efficiency, you can upgrade to double-pane or triple-pane glass and consider window tinting and low-emissivity (low-E) coatings to minimize heat transfer.

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.

Yes, advising on models that save electricity and reduce utility bills.

Yes, a dirty air filter can cause a higher electric bill. That’s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the U.S. Department of Energy, replacing dirty filters can save you between 5% and 15% in utility costs.

The Windham, 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.