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TRUSTED BY CORNWALL, PA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon11
    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Cornwall

Avatar for H L Bowman

H L Bowman

4.72(
387
)
Approved Pro

H L Bowman

4.72(
387
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
2397 local quotes requested

HL Bowman has been in the same location for 38 years and owned by the same family for over 65 years. HL Bowman is a non commission based company. HL Bowman employees will never upsell you a product you don't need. Dennis and Bryan Enders and his family have deep roots in the Harrisburg community. After 65 years Dennis and family stay committed to giving the community the best possible service and product to fit their needs. HL Bowman has won Angie's List super service award every year.

"Exceptional service from the initial diagnosis to repair, superb team. I appreciated everyone's thoroughness, willingness and honest business tactics. They provided a safe environment for me to ask questions and we explored all options. Ultimately, Joshua, sealed the deal by being caring and understanding. His expertise showed but most importantly his work ethics and integrity was felt. Many thanks to the whole team Brett, Joshua, Jason and Peter delivered Top notch service. Lastly, the communication was A+. Loved receiving text messages with photo id's, true professionals. Highly recommend! You won't be disappointed!"

Lena W on August 2025

HL Bowman has been in the same location for 38 years and owned by the same family for over 65 years. HL Bowman is a non commission based company. HL Bowman employees will never upsell you a product you don't need. Dennis and Bryan Enders and his family have deep roots in the Harrisburg community. After 65 years Dennis and family stay committed to giving the community the best possible service and product to fit their needs. HL Bowman has won Angie's List super service award every year.

"Exceptional service from the initial diagnosis to repair, superb team. I appreciated everyone's thoroughness, willingness and honest business tactics. They provided a safe environment for me to ask questions and we explored all options. Ultimately, Joshua, sealed the deal by being caring and understanding. His expertise showed but most importantly his work ethics and integrity was felt. Many thanks to the whole team Brett, Joshua, Jason and Peter delivered Top notch service. Lastly, the communication was A+. Loved receiving text messages with photo id's, true professionals. Highly recommend! You won't be disappointed!"

Lena W on August 2025



Avatar for Core Value of Lancaster

Core Value of Lancaster

5.00(
8
)

Core Value of Lancaster

5.00(
8
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Core Value Duct Cleaning & Restoration is a veteran-owned business based Lancaster, Pennsylvania servicing a 50+ mile radius. Our mission is to offer the most technologically advanced services on the market for energy efficiency and indoor air quality to include; Aeroseal, Duct Armor, NADCA certified Air Duct Cleaning and more! Green-conscious company, committed to contributing to our community and operating on three Core Values. - Integrity, in the way we work - Service, the why we work - Excellence, to our quality of work

"Great Juan an Henry did a terrific job"

Bruce G on June 2021

Core Value Duct Cleaning & Restoration is a veteran-owned business based Lancaster, Pennsylvania servicing a 50+ mile radius. Our mission is to offer the most technologically advanced services on the market for energy efficiency and indoor air quality to include; Aeroseal, Duct Armor, NADCA certified Air Duct Cleaning and more! Green-conscious company, committed to contributing to our community and operating on three Core Values. - Integrity, in the way we work - Service, the why we work - Excellence, to our quality of work

"Great Juan an Henry did a terrific job"

Bruce G on June 2021


Impact Energy Services

No reviews yet

Impact Energy Services

No reviews yet
16 years of experience

We are a full service Energy Efficiency Company for Residential, Multi-Family and Commercial applications. We specialize in working with these customers that are interested in reducing their energy consumption and costs. There are opportunities depending on requirements, that we can even help with rebates to hep defer the costs.

We are a full service Energy Efficiency Company for Residential, Multi-Family and Commercial applications. We specialize in working with these customers that are interested in reducing their energy consumption and costs. There are opportunities depending on requirements, that we can even help with rebates to hep defer the costs.


Avatar for USA Alarm Service, Inc

USA Alarm Service, Inc

No reviews yet

USA Alarm Service, Inc

No reviews yet
29 years of experience

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.


"It was awesome. They replaced my power cable and at my request it was placed above ground. The owner and crew were all very professional, friendly, upfront about their estimate and very honest. If I could I would rate them at an A+++ I would."

Terri P on April 2020

Electrical services for proud homeowners. Whether you want to upgrade your electrical service or brighten up your home with new lighting, we are honored to serve and ready to help.

"It was awesome. They replaced my power cable and at my request it was placed above ground. The owner and crew were all very professional, friendly, upfront about their estimate and very honest. If I could I would rate them at an A+++ I would."

Terri P on April 2020


Energy Smart Construction, LLC.

No reviews yet

Energy Smart Construction, LLC.

No reviews yet
52 years of experience

Complete home renovations. Willing to work with customers to come up with the price that's fits their budget. We will stay with one job until completed. We do offer special promotions if qualified. We have the most competitive pricing due to low overhead and extremely good relationships with product suppliers.

Complete home renovations. Willing to work with customers to come up with the price that's fits their budget. We will stay with one job until completed. We do offer special promotions if qualified. We have the most competitive pricing due to low overhead and extremely good relationships with product suppliers.



Avatar for MT Weatherization

MT Weatherization

No reviews yet

MT Weatherization

No reviews yet
18 years of experience

MT Weatherization is a locally owned full-service weatherization company, specializing in Spray Foam Insulation; the most effective form of insulation and air sealing available today.

MT Weatherization is a locally owned full-service weatherization company, specializing in Spray Foam Insulation; the most effective form of insulation and air sealing available today.


Weaver Weatherization

No reviews yet

Weaver Weatherization

No reviews yet
32 years of experience

At this point there is 3 employees and the owner (John Gehman) working at Weaver Weatherization. Everyone is BPI certified except the secretary. We do all types of insulation to meet your needs.

At this point there is 3 employees and the owner (John Gehman) working at Weaver Weatherization. Everyone is BPI certified except the secretary. We do all types of insulation to meet your needs.

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Energy Efficiency Auditing questions, answered by experts

While installing your new furnace, you should consider hiring a pro to perform a home energy audit . This audit will give you a handy list of any projects you could undertake to improve your home's overall energy efficiency rating, including replacing or sealing windows and insulating the attic. These improvements can help save you money each month in utility costs.

While many states require all new construction to undergo blower door tests, it’s not a requirement for existing homes. But in both cases, a blower test helps confirm that the contractor has sealed the exterior, that the type of ductwork installed is functioning properly, and that your home is as efficient as possible.

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.

Window AC units use a fair amount of electricity during use, but the usage pales in comparison to central units. As a matter of fact, window units use around a third of the amount of energy as a central AC. On average, a window air conditioner costs between $15 and $40 per month to run, though this depends on a number of external factors.

DIY is possible with basic tools. Professional audits provide comprehensive assessments and tailored recommendations.

The Cornwall, 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.