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TRUSTED BY IMPERIAL, MO HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon27
    Verified energy efficiency auditing services reviews

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

Avatar for St Louis Insulation
St Louis Insulation
4.9(
67
)
Energy Audit - For BusinessHome Energy Audit

Serving Imperial, MO and surrounding areas

In business since 2001

Free estimates

Credit card accepted

"I was totally satisfied with this Company from the beginning to the end. I scheduled an appointment and was seen right away. A representative came to my home and assessed what I needed to have done. The price was reasonable and the work was completed in a timely fashion. I would recommend this Company in a HEARTBEAT!! Thanks for ALL that you DO!!"
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+40

Recommended by98%of homeowners
Avatar for Foam Engineers
Foam Engineers
4.8(
229
)
Home Energy Audit

Serving Imperial, MO and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Fantastic experience with Paul, Mindy and their team when they helped us insulate the attic spaces surrounding and above our 1.5 story house. We have immediately seen the benefit from the insulation through our energy consumption, reducing the run-time of our unit by ~4 hours a day on like-weather days. This team will take care of your exact needs by tailoring their solutions to your specific situation and they don't cut any corners in ensuring your getting the value deserved!"
Top Plates/ Wiring
Top Plate / wiring
Sealed Duct Work
Sealed Duct Work
Sealed Duct Work

+17

Response time9 hrs
Recommended by98%of homeowners
Peterson Energy Consultants
3.9(
67
)
Energy Audit - For BusinessHome Energy Audit

Serving Imperial, MO and surrounding areas

In business since 1978

"After purchasing a Deal for a home energy audit, Paul Peterson and his wife came on the scheduled day and checked the house for air loss to the outside.  They sealed the front door with a plastic 'door' with an exhaust fan to pull in cooler outside air.  They then took pictures with a camera that showed cold/hot  areas.After inspecting attic and basement he made several suggestions as well as promising to send an estimate of work.  After I received that I eliminated some work that could be done by family and agreed to the rest.  A date was set and the workers came promptly on that day.
There were 4 workers and each of them was courteous, friendly and competent.  Work was explained and I was kept informed of
everything that was done.  They were dog friendly and cautious about closing gates while working.
At the end of the job Paul mentioned one thing that he had not bid but that needed to be done to bring everything up to code.  He said he would have his crew come by and take care of it at no cost when they were in the area.  This was done a week or so later.  I have confidence that this is an honorable company that stands behind their work and word.
"
Recommended by80%of homeowners
Avatar for Gant Heating and Cooling
Gant Heating and Cooling
5.0(
10
)
Energy Audit - For BusinessHome Energy Audit

Serving Imperial, MO and surrounding areas

In business since 2006

Free estimates

Emergency services offered

At Gant Heating and Cooling we are the top rated Heating and AC provider in the St. Louis area. With over 20 years of experience no job is too complex for us. We cover all residential and commercial repairs, replacements, and new construction jobs. We are experts at solving problems and helping our customers find the most cost effective way to fix their problem. Call us today for your free estimate! Repair and service HVAC equipment

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+1

Recommended by100%of homeowners
Avatar for American Society of Heating & Cooling Specialists
American Society of Heating & Cooling Specialists
5.0(
1
)
Energy Audit - For BusinessHome Energy Audit

Serving Imperial, MO and surrounding areas

In business since 1995

Emergency services offered

Credit card accepted

HVAC Technicians At Your Service Since 1991; As a fully licensed, bonded and insured air conditioning, heating and ventilation company, American Society of Heating and Cooling Specialists provides residential and commercial maintenance, installation and repair services on all major brands of heating, air conditioning and restaurant equipment to customers throughout St. Louis, St. Charles, and the surrounding areas.

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Recommended by100%of homeowners
Avatar for Happy Roof
Happy Roof
3.3(
22
)
Energy Audit - For BusinessHome Energy Audit

Serving Imperial, MO and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"Honest, friendly and courteous. Don Kitterman who owns Happy Roof is one of the most decent human beings that I have ever had a chance to work with. He definitely stands by his motto "people first"."
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 Imperial, 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.

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Energy Efficiency Auditing FAQs, answered by experts

Not all homes are suited for solar panel systems. Older roofs or those in poor condition may need repairs or replacement before solar panels can be installed. Some other factors to consider are the amount of sunlight your roof receives, the roof’s orientation and pitch, and any shading from nearby trees or buildings.

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

R-value measures an insulation material's thermal resistance, indicating its ability to resist heat transfer. A higher R-value signifies better insulation performance because the material is more effective at slowing heat flow. The R-value depends on the type, thickness, and density of the insulation material, such as fiberglass, foam, or cellulose. Each inch of insulation typically provides an R-value between 3 and 8. There is no single universal R-value; the optimal choice depends on your climate zone. Colder climates require a much higher R-value than warmer ones to maintain energy efficiency, keep the home warm in winter and cool in summer, and manage costs.

An average, 400-square-foot electric heated driveways consume approximately $3 per hour in terms of electricity. The price may slightly fluctuate depending on your local energy cost. A simple formula to calculate your heated driveway’s total wattage consumption is by multiplying the square footage by 50 watts and then dividing it by 1,000 to get the kilowatt number. Multiply that with your local energy cost per hour and there you have the hourly operating cost.

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 Imperial, 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.