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TRUSTED BY FERGUSON, MO HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon14
    Verified energy efficiency auditing services reviews

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

Avatar for Hosack Plumbing Heating & Cooling
Hosack Plumbing Heating & Cooling
4.8(
345
)
Energy Audit - For BusinessHome Energy Audit

Serving Ferguson, MO and surrounding areas

Approved

In business since 2009

Warranties offered

Credit card accepted

"Mike was awesome, very knowledgeable and friendly. Efficiently got the furnace running as it should be! Even took the time to educate me on what the issue was and explained what he did to fix it. Highly recommend!"
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+2

Response time8 hrs
8 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for St Louis Insulation
St Louis Insulation
4.9(
67
)
Energy Audit - For BusinessHome Energy Audit

Serving Ferguson, MO and surrounding areas

In business since 2001

Free estimates

Credit card accepted

"Estimate./proposal done by Bryan. Knowledgeable and professional. Did have to reschedule appointment due to equipment problem on a job prior to my estimate. Scheduled the work with office staff (Chris) for a couple of weeks out. Got a call the afternoon before installation that they would need to move to the next day due to having to stop an attic blow in install because of rain. Very apologetic. Bryan and Tammy arrived a bit later than scheduled due to back up at the warehouse where they were picking up the spray foam tanks. Bryan and I walked through the job and made sure we both were fully aligned on the areas to be insulated. Job went smoothly and was done professionally. He did a good job of covering under a bay window to be sure it was fully insulated. Cleaned up the area very well after they were done. They use a fully automated system to schedule and sign off on the contracts. You will need to be somewhat capable technologically through smart phone, tablet or computer."
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+40

Recommended by98%of homeowners
Avatar for Vitt Heating & Air Conditioning Co Inc
Vitt Heating & Air Conditioning Co Inc
4.7(
161
)
Energy Audit - For BusinessHome Energy Audit

Serving Ferguson, MO and surrounding areas

In business since 1954

Free estimates

Emergency services offered

"Vitt was very responsive while we investigated alternatives, and provided prompt answers to our many questions. Once we made the decision based on Vitt's good price and excellent equipment, they began the very next day and installed three complete HVAC systems (furnaces, coils and outside units) in one day. Very professional and superior work. We highly recommend Vitt."
Military Discounts (retired & active)
Senior Citizen Discounts
Residential HVAC
Multifamily & Commercial Installation & Maintenance
Professionally Installed Ducts

+6

Response time3 days
Response rate100%
Recommended by91%of homeowners
Peterson Energy Consultants
3.9(
67
)
Energy Audit - For BusinessHome Energy Audit

Serving Ferguson, MO and surrounding areas

In business since 1978

"Paul Peterson is a knowledgeable and friendly guy.? Arrived at my house 15 min. prior to apt time.? Paul reviewed the areas I thought were the worst, and showed me leaks in the house I would never have thought of.? I was not surprised at the outcome of the energy audit, but I was surprised by the price.? It was less than I thought it would've been."
Recommended by80%of homeowners
Avatar for Happy Roof
Happy Roof
3.3(
22
)
Energy Audit - For BusinessHome Energy Audit

Serving Ferguson, MO and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"The representative came to inspect the job; after investigation, he determined that the deck supports were in good shape and that the repair work did not need to be done . An honest company that I would not hesitate to call again."
Slate Replica
Slate title profile
Slate title profile
Spanish Clay
Slate title profile

+46

Response time2 days
Recommended by71%of homeowners
Tri State Solar Power, LLC
New to Angi
Home Energy Audit

Serving Ferguson, MO and surrounding areas

In business since 2019

Free estimates

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

Eddie Givens Contracting Services LLC
3.8(
4
)
Energy Audit - For BusinessHome Energy Audit

Serving Ferguson, MO and surrounding areas

In business since 1990

Emergency services offered

Credit card accepted

"Excellent.  Eddie Givens, the owner of the company, personally fixed our AC unit.  All of his HVAC technicians were working today.  Eddie offers a wealth of services.  We plan to next use him for an electrical project and replacing our current HVAC contractor with twice annual check ups.  We strongly recommend Eddie Givens"
Recommended by75%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

When combined with a substantial solar system, if you have enough Powerwalls, you could go off-grid and be energy independent. But remember, you'd need enough Powerwalls to power your whole home continuously because a single Powerwall can’t power large appliances for extended periods. One Powerwall is able to power an average-sized home's emergency circuits, lights, and outlets. To power large appliances, you likely need two or three Powerwalls.

String lights require electricity, but not an excessive amount, especially when compared to other lighting fixtures. LED rope lights, for instance, consume around one watt per foot. Running six or seven light strings simultaneously should only cost you around $10 to $15 each month. You can save even more money by remembering to turn off your lights during daylight hours. 

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

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

They’ll use more electricity than the average upright vacuum, but not remarkably more. Most power units plug into a standard 120-volt outlet and don’t have significant power demands. You shouldn’t notice an increase in electricity bills. If you have any specific questions about energy costs, ask your installer as you examine purchase decisions. Larger power units will need more electricity for their suction levels.

The Ferguson, MO homeowners’ guide to energy efficiency auditing services

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