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

Avatar for Evergreen Energy Services
Evergreen Energy Services
4.4(
24
)
Home Energy Audit

Serving Sumner, WA and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"We highly recommend this company. Kirk was on time and did what he said he was going to do. A complete and thorough energy audit was done including negative pressure test, smoke stick testing, thermo imaging evaluation, photos up in the attic and ending with a summary of what he found and advice on prioritizing projects. We opted to take notes because we didn t need a formal report. Kirk was very pleasant, patient and answered our multitude of questions. We learned a lot from him and we really appreciate all of the time he spent with us helping us understand the what s, why s and how s that need to be done. He went above and beyond what we expected and we are very grateful for it."
Response time9 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for Puyallup Heating & Air Conditioning
Puyallup Heating & Air Conditioning
4.7(
34
)
Energy Audit - For BusinessHome Energy Audit

Serving Sumner, WA and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"Perfectly! The installers, Dan and Tristan, were timely, professional and clearly experts in their field. Erik Hoover, our estimator, couldn't have been more timely and professional. I've worked with this company for 20 years and have never been disappointed."
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+43

2 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Home Squad
Home Squad
5.0(
77
)
Energy Audit - For BusinessHome Energy Audit

Serving Sumner, WA and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"I called Home Squad not knowing what to expect, I haven't heard of this company. But, I'm GLAD I did, Home Squad was amazing throughout the entire experience from calling them and setting up an appointment to meeting a wonderful electrician. Tyler was his name. Tyler was very personable and made sure he answered all my questions, I would highly recommend calling this company. They are greatly trained techs that come out and diagnose and explain things like no other. They installed a Tesla charger for my home in Bellevue and I can't wait to have them install a solar roof to my home. I have been running a generator for quite some time and solar shingles look beautiful on homes, I am ready to switch and have this team take care of it for me."
William saying Hello!
The unit has landed!
Our favorite vehicle!
Getting ready for drop off!
Additional Photos

+12

Recommended by100%of homeowners
Becker Design Consulting
4.7(
10
)
Energy Audit - For BusinessHome Energy Audit

Serving Sumner, WA and surrounding areas

In business since 2008

"Well, it was fun as well as giving me just what I wanted for my house.....more light, more privacy, and aesthetics. The nice thing about Tim, aside from the fact that he's a nice person and very intelligent, and gifted in his field, is that he listens and makes you part of the process. I felt totally at ease and secure giving him keys to my house for work that was done when I wasn't there. My house maintains it's old feel (he blended the new with the old) as well as contributing to making it an even more beautiful house."
Recommended by87%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

A home energy audit costs about $420 on average, with prices ranging from $100 to $2,250 or more. The final cost depends on factors like your home's size, location, the thoroughness of the audit, and the specific tests performed. A basic Level 1 walk-through inspection typically costs between $150 and $200, while a comprehensive Level 3 audit with detailed testing and a report costs around $900. Homeowners may be able to use the 2022 Inflation Reduction Act’s Energy Efficient Home Improvement credit to cover up to $150 of the audit cost.

Costs for common individual tests include:

  • Blower door test: $350

  • Duct testing: $100

  • HERS test: $375

  • HERS certification: $200

  • Infrared imaging: $200

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

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.

Yes, Tesla Powerwalls are worth the upfront costs, as you can recoup your investment within six to eight years. Plus, they provide peace of mind that you'll have power during a power outage, and, depending on the system you install, you can become energy-independent. While they may be more expensive than other solar power systems, they offer higher battery capacity and lifespan.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

The Sumner, WA homeowners’ guide to energy efficiency auditing services

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