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

Avatar for Omni Mechanical Services, LLC
Omni Mechanical Services, LLC
4.3(
15
)
Energy Audit - For BusinessHome Energy Audit

Serving Berlin, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Good reliable company who I’ve dealt with for quite some time. Reasonably priced I’ve had the annual contract with them for a couple of years. I just had my furnace serviced for the winter. Christian did the service. Very pleasant young man knowledgeable"
Response time2 days
2 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Gabriel Hahn
Gabriel Hahn
New to Angi
Home Energy Audit

Serving Berlin, CT and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Credit card accepted

I conduct energy audit tests for homes, whether they are colonial or brand new construction. I can recommend you various forms of weathersealant, thermal wrappings, and storm window techniques, saving you thousands in the form of long-term heat insulation tech-forward solutions.

Rachel Solar Specialist
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Berlin, CT and surrounding areas

Approved

In business since 2021

Free estimates

We pride our company on reliability, great communication, integrity, and quality work. We believe in giving our absolute best in all of our projects, no matter how big or small. You will find us to be competitively priced, with close attention to the details of each and every project. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business, so please ask us for references. \n

Response time9 hrs
Avatar for Wesson Energy Inc
Wesson Energy Inc
4.5(
32
)
Energy Audit - For BusinessHome Energy Audit

Serving Berlin, CT and surrounding areas

In business since 1935

Emergency services offered

Credit card accepted

"The guys that came out to do our home energy audit where very professional.  They gave me an overall explanation of what they would be doing and as they did their work they updated me regularly as to what they where about to do next as they completed each part.   They found my boiler was a bit out of spec on the amount of CO2 it was producing and I suggested i have it looked at.  I took them up on getting one of their maintance teams over to look at it and to my surprise they where able to be here before the Home energy audit guys left so they where able to explain what they found face to face.  It turned out to be nothing major just a bent piece of metal a little to close to the flame cause a lose of efficient burn.
"
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Recommended by90%of homeowners
Avatar for New England Conservation Services, LLC
New England Conservation Services, LLC
4.9(
8
)
Home Energy Audit

Serving Berlin, CT and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"We have had NECS to our home several times for different projects: energy audit, attic insulation, and wall insulation. These are very professional, considerate, and honest people to do such work in your home. Our house is much more energy efficient after all we have done. Insulation pays for itself very quickly, and NECS took care of all incentive programs for us. You won't go wrong with them."
Sidewall Insulatiiom
Spinsulated house
Response time6 days
Recommended by100%of homeowners
Avatar for NEW ENGLAND SMART ENERGY
NEW ENGLAND SMART ENERGY
4.9(
13
)
Energy Audit - For BusinessHome Energy Audit

Serving Berlin, CT and surrounding areas

In business since 2009

Emergency services offered

"The service was great. They gave a lot of really helpful suggestions. They replaced our bulbs with low energy bulbs. They put in weather stripping in areas needed as well. They were great to work with. They gave a detailed report on how to lower our energy usage."
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NESEG Certified Techs
Blower Door Test

+38

Recommended by91%of homeowners
Avatar for Taylor Energy
Taylor Energy
4.3(
9
)
Energy Audit - For BusinessHome Energy Audit

Serving Berlin, CT and surrounding areas

In business since 1927

Free estimates

Emergency services offered

"We lost our hot water.  We had no idea what was wrong and at first neither did Taylor energy, but they kept coming back (in a very timely manner) and trying to fix it.  When all was said and done they did a great job, quickly.  They were very considerate to our plight and they were very fair in their pricing of what was fixed.  We have used them ever since we bought our house and have, to this date, always been happy with their services."
Recommended by100%of homeowners
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Energy Efficiency Auditing FAQs, answered by experts

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.

It’s not recommended to turn off your breaker box in hopes of saving electricity. Breaker boxes were not designed to constantly be switched on and off. Therefore, turning off breakers unnecessarily can cause costly damage that outnumbers any energy savings. Only flip your breakers if absolutely necessary when troubleshooting an electrical issue.

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.

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.

The Berlin, CT homeowners’ guide to energy efficiency auditing services

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