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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

2259 Woodlawn St
4.72(
387
)
Approved Pro

H L Bowman

2259 Woodlawn St
4.72(
387
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
2031 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


"Great crew! I still have them coming around to perform seasonal check ups."

Evan V on January 2025

You can call the office at 717-478-1203 or text us at 717-462-7855 With over 20 years of experience here to help you with Residential HVAC Service and Install, Water Conditioning and EV Charger Installation.

"Great crew! I still have them coming around to perform seasonal check ups."

Evan V on January 2025



Avatar for Core Value of Lancaster

Core Value of Lancaster

451 E ROSS ST
5.00(
8
)

Core Value of Lancaster

451 E ROSS ST
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

1900 W Mason Avenue
No reviews yet

Impact Energy Services

1900 W Mason Avenue
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

510 S Clearwater Loop
No reviews yet

USA Alarm Service, Inc

510 S Clearwater Loop
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.

255 Hillcrest Rd
No reviews yet

Energy Smart Construction, LLC.

255 Hillcrest Rd
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.



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.

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Energy Efficiency Auditing questions, answered by experts

A couple of the best ways to find a reputable energy auditor is by determining whether they are HEP-certified by the Building Performance Institute (BPI). This certification will help you narrow down your list of professionals to the most qualified pros with the most relevant experience. 

You can also choose from the Department of Energy’s certified list of energy auditors or Angi’s contractor licensing tool to find pros in your area.

HVAC systems use the most household electricity. This major and essential system is responsible for heating and cooling your home all year round. Since they operate for a significant amount during the day, it consumes more energy than other appliances. 

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.

Motion-sensor lights use one watt while on standby and five watts while turned on. They’re usually on for one hour over a 24-hour period, bringing the total wattage to about 28 watts per day. LED lights use around 6.5 to 8 watts while on. If you leave an LED light on all night, with night ranging from 10 to 14 hours, you’re looking at using 65 to 112 watts a night. You can minimally cut your wattage in half by switching to a motion-sensor light.

Yes, including optimizing settings and suggesting upgrades if needed.

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.