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TRUSTED BY EUGENE, OR HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon10
    Verified energy efficiency auditing services reviews

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

Avatar for HomeRx
HomeRx
4.3(
110
)
Home Energy Audit

Serving Eugene, OR and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Credit card accepted

"Steve looked at project and wanted to be certain that attic was properly vented before he installed insulation. His recommendations were professional and helpful. We are following up."
Masking off rooms
West Seattle custom
 Lead safe practices
Yard taped off for Lead Safe
 Keeping your home clean is important to us

+12

Response time1 day
173 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Josh Lowe's Dr. Energy Saver
Josh Lowe's Dr. Energy Saver
4.4(
101
)
Home Energy Audit

Serving Eugene, OR and surrounding areas

Approved (Corporate)

In business since 2006

Free estimates

Warranties offered

"Thorough audit. However, their focus is to sell a $50,000 home sealing project. That?s crawl space to attic. Payback on energy savings? A zillion years."
fiberglass in attic not working
attic insulated with closed-cell spray foam
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation

+36

Response time1 day
101 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Josh Lowe's Dr. Energy Saver
Josh Lowe's Dr. Energy Saver
4.5(
27
)
Home Energy Audit

Serving Eugene, OR and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"After driving all the way from Eugene to Portland and prepping, contractor located knob and tube wiring and could not complete the job. Full refund! I am amazed and thankful for their business practices. I will definitely use these folks again!"
Bill Drummond, General Mgr. and Energy Consultant
AJ DeLaRosa
Eric Gibson, Energy Consultant
Lee Tracy, Energy Consultant
Sean Copas, Energy Consultant

+15

Recommended by89%of homeowners
Avatar for Benjamin Gorman
Benjamin Gorman
4.0(
4
)
Home Energy Audit

Serving Eugene, OR and surrounding areas

In business since 2024

Free estimates

Small jobs welcome

"Ben did an energy analysis of my home looking for places where energy might be leaking out He did a thorough investigation of the house including a blower door test and found several places where drafts were allowing heating and cooling to escape and raise my energy bills. I was surprised by the places where air was leaking out. I wouldn't have thought of those places. One was into the crawl space under the house, another was under two French doors. Who knew a relatively well-built house would have that many leaks. No wonder my electricity and gas bills were higher than I'd like."
Ceiling fixture air leak
Blower door test reading
Deal seal air leak
Kitchen cabinet drop soffit unsealed
Air leak at window molding strip

+7

Response time1 day
Response rate100%
Recommended by100%of homeowners
Avatar for Joey Builders, Inc.
Joey Builders, Inc.
1.0(
2
)
Energy Audit - For BusinessHome Energy Audit

Serving Eugene, OR and surrounding areas

In business since 2020

Free estimates

With years of experience in the construction industry, we are the experts you need to take care of your home or business. We handle all of your remodeling needs with great care. We will treat your home as we would treat our own. Give Joey Builders, Inc. a call today, we look forward to working with you!

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Response time10 hrs
Energy Efficiency Auditing FAQs, answered by experts

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 three levels of home energy audits include:

  • Level 1: Review of your energy bills and home for signs of energy inefficiency and areas for improvement. The average cost range is $0.08 to $0.12 per square foot.

  • Level 2: A level 2 ASHRAE energy audit costs $0.12 and $0.35 per square foot. In-depth analysis of your energy usage and provides a report of cost-saving changes.

  • Level 3: Comprehensive analysis and detailed recommendations for ways to improve your home’s energy efficiency. A level 3 audit costs about $0.36 to $0.50 per square foot.

Typically, triple-pane windows made with krypton gas filling are the most energy efficient. A window’s frame, glass, design, and installation all affect its energy efficiency. These windows, in particular, are designed highly effectively in terms of their ability to insulate.

Depending on the level of audit you choose, a home energy audit will at least include a walk-through of the home to determine visible inefficiencies, but may include testing and a highly detailed inspection and report laying out the home’s inefficiencies and providing recommendations to fix those issues. The audit may also include a review of utility bills and mechanical testing. Consult your home energy auditor about the types of services they provide before hiring.

Modern windows provide enhanced UV protection, improved heat retention, and cooling efficiency, contributing to overall household energy savings.

The Eugene, OR homeowners’ guide to energy efficiency auditing services

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