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TRUSTED BY BABYLON, NY HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon13
    Verified energy efficiency auditing services reviews

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

Avatar for Premier HVAC Services
Premier HVAC Services
4.3(
229
)
Energy Audit - For BusinessHome Energy Audit

Serving Babylon, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Affordable HVAC repair service. You can actually ask them to do little extras at no additional cost. After I called them for emergency repair of our AC unit, they offered a complementary cleaning for the unit. Amazing customer appreciation. Totally recommended!"
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+38

Response time1 day
Response rate100%
1 neighbors recently requested a quote
Avatar for Eco Green Solutions
Eco Green Solutions
5.0(
28
)
Energy Audit - For BusinessHome Energy Audit

Serving Babylon, NY and surrounding areas

In business since 1987

Free estimates

Emergency services offered

"We had purchased a de-humidifcation system for our basement through Frank Petrullo a few years ago.  Once installed, gone were the days of having to constantly empty the bucket from our old stand alone unit.  The new system was operating without a hitch until suddenly, it ceased functioning.  We called Eco Green and explained the problem.  Frank made sure that a service appointment was scheduled promptly.  We didn't have to wait around for the technician to arrive as he came to our home as scheduled.  The problem was identified - the culprit was our cat, who had taken a liking to the  tubing and had managed to damage the system.  There was little doubt in the technician's mind as to what had happened since our cat was kind enough to attack the unit in his presence! 
The Eco Green technician devised a solution to protect the unit from our cat allowing our unit to resume functioning and keeping our basement dry.  
We are very happy with the customer service and attention that we have received from Eco Green and gladly recommend this company.
"
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Recommended by100%of homeowners
Avatar for Powersmith Home Energy Solutions
Powersmith Home Energy Solutions
4.2(
27
)
Energy Audit - For BusinessHome Energy Audit

Serving Babylon, NY and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Powersmith (Mike and his team) was the most professional, courteous, clean and prompt group of plumbers we have ever had the opportunity to work with. They arrived EARLY to perform the job both days.  The job which was a very large one, included removal of our old oil system including the tank, prepping of our chimney, installation of our new gas burning system.  Each team of workers was more efficient than the next.  The first day the Salesperson, Joe came to our house, we knew they were the ones for the job.  They operated like a (pardon the pun) well operated machine.  They were so professional and looked genuinely happy to be here (which is very rare these days).  They left our house looking as if nothing was even done (and this was a huge and dirty job). This was a costly, long and well thought out change for us and we interviewed no less than 5 other plumbers from all over Nassau County. We are SO happy we chose them.  I would recommend them to anyone and wouldn't hesitate to call them in the future.  Thank you Powersmith!"
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+9

Recommended by80%of homeowners
Avatar for Federal Conservation Corp
Federal Conservation Corp
4.5(
166
)
Energy Audit - For BusinessHome Energy Audit

Serving Babylon, NY and surrounding areas

In business since 1979

Free estimates

Credit card accepted

"Joey Jacinto was prompt, courteous, and happy to share his extensive knowledge. With his infrared camera we could see where the major loss of heat was occurring. Much to our surprise, our walls turned out to be insulated and the attic insulation was adequate. Our main problem was the old wooden windows which we are planning to replace, and one or two small house extensions that needed ceiling installation. Joey made lots of wallet-friendly suggestions throughout his tour of the house that respected our old home's charm, and we could tell that he really knew housing thoroughly."
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+1

Recommended by90%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

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.

A home energy audit costs about $420 on average, with prices ranging from $100 to $2,250 or more. The final cost depends on factors like your home's size, location, the thoroughness of the audit, and the specific tests performed. A basic Level 1 walk-through inspection typically costs between $150 and $200, while a comprehensive Level 3 audit with detailed testing and a report costs around $900. Homeowners may be able to use the 2022 Inflation Reduction Act’s Energy Efficient Home Improvement credit to cover up to $150 of the audit cost.

Costs for common individual tests include:

  • Blower door test: $350

  • Duct testing: $100

  • HERS test: $375

  • HERS certification: $200

  • Infrared imaging: $200

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Yes, mini-split or ductless AC systems add value to a home and do not devalue it. They are an attractive feature for potential buyers, especially in older homes without existing ductwork, as they provide a practical air conditioning solution without the significant expense and hassle of installing traditional ducts. Ductless systems also eliminate issues associated with conventional ductwork, such as noise and the potential for pests. Furthermore, homeowners value energy-efficient solutions, and mini-splits offer high efficiency for both heating and cooling, plus zoned temperature control. This leads to lower energy consumption and reduced electric bills, which is a major selling point.

Yes, most audits include a report with prioritized recommendations for improving energy efficiency. Confirm with your auditor.

The Babylon, NY homeowners’ guide to energy efficiency auditing services

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