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Avatar for Posert Energy Consulting
Posert Energy Consulting
4.6(
47
)
Home Energy Audit

Serving Graton, CA and surrounding areas

Approved

In business since 2019

Customers say: True professional

"Peter is a very knowledgeable and patient guy - he helped us understand our energy usage and even showed us how to read the usage of individual appliances used in our home. He also provided a full report on potential issues with specific windows, and had really good information about planning for future HVAC improvements. We feel so much better about our future home improvement projects after our home energy audit with Posert Energy!"
Response time2 days
8 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for SunRun LLC
SunRun LLC
5.0(
12
)
Energy Audit - For BusinessHome Energy Audit

Serving Graton, CA and surrounding areas

In business since 2007

Free estimates

"Spectacular! I had solar installed and Trevor was super helpful with the process. He made all the complicated paperwork easy. Just like that we have solar and I'd never go back! Double thumbs up for Trevor!"
Install!
Start saving on electric charges
Install in San Diego
Wonder What We Do??
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+8

Recommended by100%of homeowners
Avatar for Attic Masters
Attic Masters
4.7(
33
)
Energy Audit - For BusinessHome Energy Audit

Serving Graton, CA and surrounding areas

In business since 2010

Free estimates

Credit card accepted

"Ron and the crew that came worked very hard installing the radiant barrier. They were polite professional and at the end of the day they cleaned up any debris that fell from the attic. My husband and I were very satisfied with all aspects of the job done by Attic Masters. Thankyou so much!"
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+7

Recommended by95%of homeowners
Avatar for Slingshot Power
Slingshot Power
4.7(
3
)
Energy Audit - For BusinessHome Energy Audit

Serving Graton, CA and surrounding areas

In business since 2012

Free estimates

Credit card accepted

"The entire process went smoothly. Begin with a system quote from Paul Sherer with a design layout, followed by a feasibility study of the roof and where the panels are to be installed. I have a metal tile roof and the previous solar vendor actually rejected the project. Slingshot first installed the 240v outlet and that took 2 people a whole day to complete, as my electric panel is at the other side of the house from the garage. The panel installation took another 2 days that included the interconnect, upgrading the breakers on the panel. The staff was professional, courteous and focus on doing the job right. Then the city inspection and followed by submitting the application to PG&E. The approval took only 3 days which was a pleasant surprise. Slingshot came out to install a CDD so I can monitor the performance and output of all 13 panels. Not only the project completely very smoothly and on time, the final price I paid is exactly what was quoted from day 1. Now that my electric car is here, I think I can recover the cost within 2 years."
Recommended by100%of homeowners
Avatar for Healthy Duct Cleaning
Healthy Duct Cleaning
3.9(
376
)
Energy Audit - For BusinessHome Energy Audit

Serving Graton, CA and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"The cleaning job went very well. It was a job of many surprises( pokaman chips, matchbox size cars,of course legos etc. etc.etc.)! We moved to the house in 88,remodeled a few years later and then never cleaned them. The cleaning was a great check and all is well. In fact they stated that they weren't bad (considering). I was very happy they are in good condition.........................................."
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+17

Recommended by69%of homeowners
Avatar for Applied Building Science
Applied Building Science
5.0(
3
)
Home Energy Audit

Serving Graton, CA and surrounding areas

In business since 2008

Free estimates

"After a brief period of essential hammering in the attic and testing for air leakage, the work was done silently. The very pleasant installation crew was unobtrusive and efficient. I was amazed the "blowing in" process could be so quiet and clean. Not a drop of insulation escaped the attic."
Recommended by50%of homeowners
Showing 1-10 of 23
Energy Efficiency Auditing questions, answered by experts

Yes, energy-efficient windows really can make a difference. As long as energy-efficient windows are properly installed and maintained, they can reduce your energy bill and offer significant savings.

Yes, including optimizing settings and suggesting upgrades if needed.

STC (Sound Transmission Class) is a rating that describes how well a building material or assembly blocks airborne sound. A higher STC rating means less noise will pass through the material, providing better sound reduction. This rating system applies to various building components, including windows, doors, flooring, drywall, and insulation.

For context, a typical single-pane window has an STC rating of around 25 (where normal conversations are audible), while a well-sealed, double-pane window can exceed STC 45 (blocking loud speech and most music). It is important to note that for some products, like soundproofing drywall, the STC rating refers to the entire wall system, not just the individual panel.

Additionally, STC ratings are most effective for measuring sound reduction at mid-to-high frequencies, such as human speech, and may not accurately reflect how well a material blocks low-frequency sounds like bass music or thunder. Because of these factors, it is recommended to consult a professional to determine the right STC-rated materials for your specific soundproofing needs.

If your AC runs constantly, it could be due to a number of things, including a faulty thermostat, incorrect temperature settings, or broken equipment. Alternatively, you might have an airflow problem (for example, blocked vents or leaky ductwork). Either way, an HVAC pro can identify the specific problem and fix it for you.

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.

The Graton, CA homeowners’ guide to energy efficiency auditing services

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