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TRUSTED BY EXTON, PA HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon40
    Verified energy efficiency auditing services reviews

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

Old Skool HVAC,LLC
4.4(
11
)
Energy Audit - For BusinessHome Energy Audit

Serving Exton, PA and surrounding areas

Approved

In business since 1982

Emergency services offered

Warranties offered

"These guys are the best. we moved into a new house back in June and had the hot water heater die after a few weeks. Frank was out the next day with a new hot water heater, at a excellent price. Both my wife and I were extremely happy with the work done, the price we were given and the customer service we got. Since then we have had two other 'emergencies' (air conditioner/leaky pipe in bathroom) and these guys came out right away and fixed the problems at excellent prices. Each time we had them at our house, they were very detailed about what the problem was and how they were going to fix it. Our HVAC is 25 years old and on it last legs. We've already asked Frank about it, and as soon as we are able to, we'll be calling Old Skool for our new one."
Response time1 day
7 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Strictly Business Home and Commercial Inspections
Strictly Business Home and Commercial Inspections
4.4(
59
)
Energy Audit - For BusinessHome Energy Audit

Serving Exton, PA and surrounding areas

In business since 1984

Free estimates

Credit card accepted

"Ira was cordial and professional. He has practical experience and knowledge of residential energy audits. He was able to provide useful suggestions but not definitive solutions to issues. That may have been due to inaccessible interior walls. I am frustrated that a full written report that had been promised still has not been produced six weeks later."
Response time7 hrs
Recommended by77%of homeowners
Avatar for Home Energy and Comfort, LLC
Home Energy and Comfort, LLC
4.8(
55
)
Home Energy Audit

Serving Exton, PA and surrounding areas

In business since 2015

Free estimates

Warranties offered

"I have lived in my house for two years, and have had problems with rooms that wouldn't get cool in the summer (despite central air conditioning), or stay warm in the winter. I had to move my bedroom after the first summer and winter, and could not comfortably sit for long in my living room. I replaced all my windows with triple paned ones in March 2020, which made little difference. I had PECO do an energy assessment of my home last spring. Home Energy & Comfort was on PECO's list of recommended contractors. I researched them further, and their reviews were impressive. I soon found out why. Gordon Clark, one of the co-owners, and a crew of three to four workers spent two days at my home in early June 2020. To make a long story short, they insulated everywhere that needed it (including the garage which is underneath my living room), air sealed gaps and cracks where needed, sealed up ducts, spray foamed rim and band-joist area, and did air seal blowing tests before and after the work. The team was always polite and respectful, and masked due to the Coronavirus. They protected everywhere they worked with plastic sheets and tarps, and cleaned up well afterward. They also did all the work to submit paperwork for rebates from PECO, and deducted the rebate amounts from my bill rather than have me wait for them. This has honestly been the best money I have invested in my home. The hot days have shown me the vast improvement in energy efficiency. I was able to move my bedroom back to the bigger room in the southwest corner, which is now very comfortable. An added bonus is the reduction of dust in my home. I am very happy I chose Home Energy & Comfort to do the work in my home!"
BPI GoldStar Contractor
Blower Door Test
Truck
Adding Attic Insulation
Response time1 day
Recommended by100%of homeowners
Avatar for Harmon Heating & Air Conditioning
Harmon Heating & Air Conditioning
4.8(
84
)
Energy Audit - For BusinessHome Energy Audit

Serving Exton, PA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Bruce came on the same day as I called. He gave me an estimate for work to be done. He came within a week and fixed my boiler. He stated that it was an easier fix then he expected, thus he reduced my bill. So appreciative of his honesty. So uncommon in today's world. I would definitely recommend."
Additional Photos
Recommended by96%of homeowners
Avatar for Mark Group
Mark Group
4.4(
467
)
Energy Audit - For BusinessHome Energy Audit

Serving Exton, PA and surrounding areas

In business since 1974

Free estimates

Credit card accepted

"Person who visited was very polite and noted that what I purchased was likely not something that would meet my expectations.  I wanted an energy audit, how my systems could be improved in home, lighting, heating, insulation and air conditioners.  What I got was a list of things they could work on and the price to do that work.  The work list in no way was considered an energy audit, rather it was a punch list of things I could do based on their visual inspection.  I did not have a comparison of work and benefit/savings calculation.  There was no checklist of inefficiencies and how that translated into energy losses. For example, multiple hi hat lights in house, they spoke about boxing and insulating a few, less than 10, when I have almost 90 in house.  Overall I was disappointed, the tech who came said the offering needed to be better presented prior to start of work."
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+14

Recommended by83%of homeowners
Universal Air Heating & Cooling, LLC
4.8(
24
)
Energy Audit - For BusinessHome Energy Audit

Serving Exton, PA and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"Bill was very responsive, prompt, professional and extremely knowledgeable. He was even able to save me a few hundred dollars by removing one of the components that was still working from the dead unit and put it in the unit which needed fixing. He'll also be getting me a quote to replace the non-working unit. I would highly recommend Bill's company."
Additional Photos
Recommended by91%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

You can increase your home’s load factor by replacing fuse boxes with a circuit breaker, hiring a licensed electrician to upgrade your electrical panel, upgrading wiring, or installing subpanels. An electrical inspection by an expert can help determine the state of your current electrical systems and how they can be improved.

Common warning signs of an overloaded electrical panel or meter box include frequent circuit breaker tripping, flickering or dimming lights, scorch or burn marks, and a burning scent coming from the panel. A circuit breaker trips as a protective measure to prevent overheating and potential fires. If you observe any of these signs, turn off the affected circuit breaker and move some devices to a different circuit. If the problem persists after turning the breaker back on, you should contact a professional electrician to resolve the issue.

There is no blanket figure for a residential home’s electrical load, since load varies by the size of the home, how many appliances are used, and the efficiency of their electrical systems. Typically, however, it’s safe to assume 40 to 60 amps is the average electrical load of a residential home. 

Yes, installing an attic fan can help lower your electric bill—particularly if you live in a hot and humid region. By replacing hot and stuffy air with cooler air, these fans help regulate the temperature in your attic and the rest of your home, taking some of the pressure off of your air conditioner.

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 Exton, PA homeowners’ guide to energy efficiency auditing services

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