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

Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
5.0(
15
)
Energy Audit - For BusinessHome Energy Audit

Serving Markham, IL and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"I’m extremely satisfied with Regional. We had three sump pumps that needed to be replaced (primary, secondary, and water powered backup). The quote was very reasonable, and they were able to do the work shortly after their initial visit. They replaced everything with Liberty pumps. Justin and Erich did the work and they were very professional. We had them quote out a couple of other items (replacing water heater, etc) and those quotes were also very reasonable. I will definitely hire them for future jobs."
16 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Perma-Seal Basement Systems
Perma-Seal Basement Systems
4.4(
1,540
)
Home Energy Audit

Serving Markham, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1979

Free estimates

Emergency services offered

"The gentleman that came to do the electric for my sump pump in the basement was a gentleman did great cleanup great work courteous kind very informative. This was the first step prior to having the drains put in. This was the Electrician and he was excellent."
Thermal imaging
Blower door test
Old insulation removal
New blown insulation
Perma-Seal Attic Insulation

+48

Response time1 day
Response rate100%
47 neighbors recently requested a quote
Avatar for Millennium Solar Electric Inc
Millennium Solar Electric Inc
4.6(
203
)
Energy Audit - For BusinessHome Energy Audit

Serving Markham, IL and surrounding areas

In business since 1999

Emergency services offered

Credit card accepted

"I found Millennium Solar Electric through an Angie's List offer to have an electrical panel replaced with an upgraded panel with a whole home surge protector where you have to pay for the service in full before scheduling the services. Paying a service provider in full before they do any work is quite the leap of faith and goes against rules of dealing with service providers but it is the only way to take advantage of the offers. In an attempt to protect myself I contacted Millennium prior to making payment. The company did not respond to contact attempts through Angie's List email and chat service. I attempted to contact them several times that way throughout October 2017. I finally got in touch with them on November 1st. They apologized for not responding to my attempts to contact them through Angie's List. November 17th was earliest he could schedule my appointment. The work seemed to go off without much of a hitch. When they finished installing the panel, the workers left without much explanation of what what done. I noticed after they left that one of the breakers was not turned on. It was the breaker connected to the whole home surge protector. I wasn't sure if it was supposed to be on or off so I called the company and had to leave a message. A few days later I finally received a response telling me that the breaker should have indeed been turned on. OK, I thought, not a big deal. A week later I noticed that my outdoor security light was no longer working. It was working prior to the installation of the panel. So again I had to call the company. I called on December 1st, left a message. He called me back, stated that he knew what probably went wrong with the wiring when he reconnected the panel but said that he would me back to schedule a time to come correct the problem. I didn't hear back that day so I called on December 4th, 5th, and 6th. On the 6th I again explained the issue as he didn't seem to remember and we made an appointment for December 11th to correct the problem. So I took off work and waited for him to come correct the issue. Guess what....I didn't hear from him on December 11th. I called and find out what happened and the calls went directly to voice mail. I waited an hour and called again and left a message. That is where our story ends for now. I must not contemplate having another company correct the issue which would mean I would have to sue this company for whatever the amount I am charged to have the light fixed. Between December 11th and December 14th, the owner, Christopher Williams and I had a couple of exchanges via text. I think in the end, Mr. Williams understood my frustration and on December 16th he came out as promised (actually he was early) and corrected the issue with the outdoor security light. Now that my issues are resolved I have a much more favorable view of the company."
New ductwork and sheet metal
Granite countertops and new floors
New cabinet, countertops and floors
panel upgrade
400 amp meter service upgrade

+25

Recommended by90%of homeowners
Avatar for Complete Heating & Air Conditioning
Complete Heating & Air Conditioning
3.9(
23
)
Energy Audit - For BusinessHome Energy Audit

Serving Markham, IL and surrounding areas

In business since 1996

Emergency services offered

Credit card accepted

"I had a fire back in October 2012 and All State paid for everything when I had my new home built. While the fireman were still on the property they were here. They covered everything! They were efficint, caring and promt. They were also very responsive when I called them and had Elko Construction come out right away. They had 2 cleaners the American Cleaning Company come out as well."
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+14

Recommended by81%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

There are a couple of ways you can save on the cost of your home energy audit. First, find out if you qualify for programs like the Department of Energy’s Weatherization Assistance Program for low-income households. Next, check with your local utility company to find out if you qualify for any local rebate programs to offset the cost of this helpful service.

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.

ENERGY STAR®-certified windows are the most energy-efficient windows on the market. This certification means that the window meets strict efficiency guidelines set forth by the Environmental Protection Agency. While they might cost more upfront, they can save you money on your energy bills in the long run. ENERGY STAR®-certified windows lower household energy bills by an average of 12% annually.

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.

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.

The Markham, IL homeowners’ guide to energy efficiency auditing services

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