FAQ

At Green Stone Energy, we place a great deal of focus on educating our customers as much as possible on the finer points of energy efficiency and home performance contracting. Here are a handful of the most common questions we receive.

What is home performance?

What is a Home Energy Audit?

What kind of tools do you use in an energy audit?

What kind of training does your team have to do this work?

Do you offer rebates or incentives for this work?

What is indoor air quality?

How long is the return on investment?

Will this work help lower utility bills in the summer as well as the winter?

Should air sealing be done prior to attic insulation?

Will air sealing help lower utility bills and increase comfort?

My room is cold - can you help?

Should I be concerned about Drafts?

Can anything be done about a cold room over the garage?

Attic - does it have enough insulation?

Does Green Stone Energy offer air sealing?

Why is duct sealing important?

Adding insulation - different options for easy and difficult to access places

Knee walls - can they be insulated

What is your service area?

Have a question about something we haven’t covered? Contact us today to learn more!

Insulation & Air Sealing: What You Need to Know

Improve Comfort. Reduce Energy Waste. Save Money.

Heating and cooling can account for a significant portion of the energy used in an average home. When a home has inadequate insulation or uncontrolled air leakage, conditioned air can escape and outdoor air can enter, making your heating and cooling system work harder.

Proper insulation and air sealing work together to create a more comfortable, energy-efficient, and durable home. By addressing areas where heat is lost and unwanted air enters, you can help maintain more consistent temperatures throughout your home while reducing energy waste.

According to the U.S. Department of Energy, heating and cooling can represent approximately 50%–70% of the energy used in the average American home, and proper insulation and air sealing can often provide meaningful energy savings.

How Insulation & Air Sealing Work

Insulation helps slow the transfer of heat between your home and the outdoors. During the winter, it helps keep heated air inside. During the summer, it helps keep unwanted heat outside.

Air sealing addresses a different problem: air movement. Gaps, cracks, penetrations, and other openings in your home's building envelope can allow conditioned air to escape and outside air to enter.

Common areas that may benefit from insulation and air sealing include:

Attics and attic floors

Knee walls

Exterior walls

Rim joists

Basements and crawl spaces

Around plumbing and electrical penetrations

Recessed lights and other ceiling penetrations

Ductwork and mechanical areas

Gaps around windows, doors, and other openings

The right approach depends on your home's construction, existing insulation, air leakage, and overall condition. That's why we evaluate the property before recommending a solution.

The Benefits of Insulation & Air Sealing

Improved Home Comfort

Properly insulated and air-sealed homes are better able to maintain consistent temperatures. This can help reduce cold floors, drafts, hot or cold rooms, and uncomfortable temperature differences between floors.

Lower Energy Bills

Reducing heat loss, heat gain, and unwanted air leakage can help your heating and cooling equipment operate more efficiently. Depending on the condition of your home and the improvements made, you may be able to reduce energy consumption and lower your utility costs.

Better Indoor Air Quality

Air sealing can help reduce the amount of outdoor air, dust, and other pollutants entering through unintended openings in your home's building envelope. Proper ventilation should also be considered to ensure your home receives the appropriate amount of fresh air.

Reduced Strain on Your HVAC System

When your home holds conditioned air more effectively, your heating and cooling equipment may not need to run as frequently or as long to maintain your desired temperature.

A More Durable Home

Properly installed insulation and air sealing can help manage heat and air movement through your home's building envelope, potentially reducing moisture-related problems and helping protect the structure.

Rebates & Incentives May Be Available

Depending on your location, utility provider, and the improvements being completed, your project may qualify for rebates or incentives through your electric company or other energy-efficiency programs.

At Green Stone Energy, we make the process easier. When applicable, we submit the required incentive paperwork to your electric company on your behalf and apply eligible incentives as an upfront discount, so you can receive the savings without having to wait for a reimbursement.

Incentive programs, eligibility requirements, and available amounts can change, so contact our team to find out what programs may be available for your property.

Why Choose Green Stone Energy?

At Green Stone Energy, we take a whole-home approach to insulation and air sealing. Rather than simply adding insulation, we look at how your home is performing and identify areas where improvements can make the biggest difference.

Our experienced team provides insulation and air-sealing solutions for residential and commercial properties, including:

Fiberglass insulation

Blown-in cellulose insulation

Spray foam insulation

Rigid foam insulation

Attic insulation and air sealing

Knee wall insulation

Rim joist insulation

Basement and crawl-space insulation

Air sealing and weatherization

Ready to Make Your Home More Comfortable?

If your home has uneven temperatures, high energy bills, drafts, or rooms that are difficult to heat or cool, insulation and air sealing may be part of the solution.

Contact Green Stone Energy today to schedule an assessment. We'll evaluate your property, identify opportunities for improvement, and help you determine the most effective solutions for your home or commercial building.

Green Stone Energy LLC
Your Home, Sealed for Comfort

Contact Us Today for A Free Energy Assessment

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TESTIMONIALS

Thank you Dutch and Christian from Green Stone Energy LLC for a job well done. Our family will be feeling much warmer this winter. No more heating the outside.

— Lisa, Alex & Thorsten, Audubon, PA

A really good weatherization Company. Would highly recommend.

— Nancy S.,

The work that Green Stone Energy completed at my home was awesome! The crew arrived as scheduled and completed their work in the most timely manner. They were very neat and made sure to clean up after themselves. I couldn't believe that the owner of the company even came to check on the progress...The work that Green Stone Energy completed at my home was awesome! The crew arrived as scheduled and completed their work in the most timely manner. They were very neat and made sure to clean up after themselves. I couldn't believe that the owner of the company even came to check on the progress of the crew and went through the whole process with me. Would definitely recommend Green Stone Energy to others - such a pleasant and hassle free experience.

— John S., Norristown,

They arrived when they said they would. spread drop cloths where they would be walking. The owner stopped by to check on the progress. All went well. It took about 8 hours from start to finish. My initial observations are showing a positive improvement in the houses ability to hold temperature... They arrived when they said they would. spread drop cloths where they would be walking. The owner stopped by to check on the progress. All went well. It took about 8 hours from start to finish. My initial observations are showing a positive improvement in the houses ability to hold temperature which is an increase in overall comfort. It is too early to determine a dollar savings in gas and electric usage. I would recommend and use them again. All were very nice to deal with.

— Nancy M., West Chester, PA,Nancy S.,

We contacted Green Stone Energy after a PECO energy audit showed a lack of insulation in our attic. Everyone was very professional, friendly, prompt and did a quality job for us.

— Monica H., West Chester,

Estimate was done after a complete examination of my concerns.

— Susan M.,

We called in Green Stone Energy after a Peco audit recommendation and had two quotes. One was a bit more involved but also 80% more $$. They answered my many questions and upon recognizing at the start of the project they had forgot to include two small areas in their quote, they included the We called in Green Stone Energy after a Peco audit recommendation and had two quotes. One was a bit more involved but also 80% more $$. They answered my many questions and upon recognizing at the start of the project they had forgot to include two small areas in their quote, they included the work itself anyway for the price quoted. The two gentlemen who came to do the work were kind, courteous and of no bother. They kept us informed through out the project and we felt very comfortable the service. I'd recommend Green Stone Energy on a variety of levels but a star also goes to the improvement to our comfort level in the house - that itself is remarkable. Why did we wait so long?

— Jan L., ,Newtown Square

Very satisfied with all the work. The installers were very professional, efficient, polite, on time, and kept everything covered and clean.

— Mary K.,

I can't thank Dutch Schwertner and his team enough for their thorough evaluation and installation of energy efficiency at my Salon. Andrew and Ryan arrived as scheduled with a smile. Their preparation and communication skills really impressed me . I was so pleased with all the care they took to... I can't thank Dutch Schwertner and his team enough for their thorough evaluation and installation of energy efficiency at my Salon. Andrew and Ryan arrived as scheduled with a smile. Their preparation and communication skills really impressed me . I was so pleased with all the care they took to protect my furniture and flooring. My staff and clients are enjoying the more comfortable temperature and I'm loving my Peco bill. This company is stellar and worth every penny!

—Susan S.,

Extremely pleased with everything we received from Green Stone Energy. Everything, from a prompt and fair proposal to timely service appointment. Did not try to oversell us and even recommended not having certain things done as it would not improve the comfort of our home. The work was done... Extremely pleased with everything we received from Green Stone Energy. Everything, from a prompt and fair proposal to timely service appointment. Did not try to oversell us and even recommended not having certain things done as it would not improve the comfort of our home. The work was done extremely well and cleaned up prior to departure. They answered every question and concern we had as well as followed up afterwards to make sure we were pleased.

—Gary M.,

Everything went perfectly. Wonderful staff to work with at all levels. Highest level of professionalism and workmanship. The night that the work was done, warm air was streaming into our third floor bathroom, for the first time ever. We were amazed at how much energy we must have been Everything went perfectly. Wonderful staff to work with at all levels. Highest level of professionalism and workmanship. The night that the work was done, warm air was streaming into our third floor bathroom, for the first time ever. We were amazed at how much energy we must have been wasting even though we had made many different energy saving improvements before. We're looking forward to seeing how it affects our heating bills!

— April & John S.,

Mark came and conducted a thorough inspection. A well detailed estimate was provided. On the first date of the 2-day installation Mark came on site to review the intended job. Both installers were pleasant and more than competent. They cleaned up well each day. They installed ceiling and... Mark came and conducted a thorough inspection. A well detailed estimate was provided. On the first date of the 2-day installation Mark came on site to review the intended job. Both installers were pleasant and more than competent. They cleaned up well each day. They installed ceiling and basement insulation.

— Marilyn C.

Our experience with Green Stone Energy was outstanding. The first visit involved identifying the energy-saving opportunities that our home presented. We discussed those opportunities and I learned why and how the required work would be done. The second visit involved doing the actual work, which... Our experience with Green Stone Energy was outstanding. The first visit involved identifying the energy-saving opportunities that our home presented. We discussed those opportunities and I learned why and how the required work would be done. The second visit involved doing the actual work, which took half a day and was completed by two outstanding workers who impressed me with their expertise and diligence in getting the work done. I observed them carefully and was impressed with their professionalism and attention to detail. They were very respectful in terms of keeping our home clean even as they dealt with installing the attic insulation. I give Green Stone Energy my highest recommendation and do so without the slightest reservation. In an era when it is difficult to find truly trustworthy companies, Green Stone Energy was a very welcome surprise, and we couldn't be happier with the results.w the findings of a PECO energy audit. Dutch went over the recommendations with me, and got me a proposal a few days later. The team doing the work showed up on time and were very professional. They placed drop cloths before working inside the house and vacuumed... Read More Michael K.,"We had an initial call with Green Stone (GS) and agreed to get an estimate. We did the same with several other contractors. The GS representative "Dutch" came to our home and was very knowledgeable of the PECO results and provided a detailed list of energy saving measures we could possibly... Read More Mike K. ,I wanted to thank you for your help with my insulation job. In particular, I wanted to give a shout out to Greg who was on every aspect of the job. He was detail oriented, knowledgeable, conscientious, and a pleasure

— Angelo A. ,

An estimator came over to review the findings of a PECO energy audit. Dutch went over the recommendations with me, and got me a proposal a few days later. The team doing the work showed up on time and were very professional. They placed drop cloths before working inside the house and vacuumed... An estimator came over to review the findings of a PECO energy audit. Dutch went over the recommendations with me, and got me a proposal a few days later. The team doing the work showed up on time and were very professional. They placed drop cloths before working inside the house and vacuumed work areas afterwards. They condu cted blower tests before and after the work to measure the progress made. Before they left, they went over the work that was done.with Green Stone (GS) and agreed to get an estimate. We did the same with several other contractors. The GS representative "Dutch" came to our home and was very knowledgeable of the PECO results and provided a detailed list of energy saving measures we could possibly... Read More Mike K. ,I wanted to thank you for your help with my insulation job. In particular, I wanted to give a shout out to Greg who was on every aspect of the job. He was detail oriented, knowledgeable, conscientious, and a pleasure to work with.Our experience with Green Stone Energy was outstanding. The first visit involved identifying the energy-saving opportunities that our home presented. We discussed those opportunities and I learned why and how the required work would be done. The second visit involved doing the actual work, which... Our experience with Green Stone Energy was outstanding. The first visit involved identifying the energy-saving opportunities that our home presented. We discussed those opportunities and I learned why and how the required work would be done. The second visit involved doing the actual work, which took half a day and was completed by two outstanding workers who impressed me with their expertise and diligence in getting the work done. I observed them carefully and was impressed with their professionalism and attention to detail. They were very respectful in terms of keeping our home clean even as they dealt with installing the attic insulation. I give Green Stone Energy my highest recommendation and do so without the slightest reservation. In an era when it is difficult to find truly trustworthy companies, Green Stone Energy was a very welcome surprise, and we couldn't be happier with the results.w the findings of a PECO energy audit. Dutch went over the recommendations with me, and got me a proposal a few days later. The team doing the work showed up on time and were very professional. They placed drop cloths before working inside the house and vacuumed... Read More Michael K.,"We had an initial call with Green Stone (GS) and agreed to get an estimate. We did the same with several other contractors. The GS representative "Dutch" came to our home and was very knowledgeable of the PECO results and provided a detailed list of energy saving measures we could possibly... Read More Mike K. ,I wanted to thank you for your help with my insulation job. In particular, I wanted to give a shout out to Greg who was on every aspect of the job. He was detail oriented, knowledgeable, conscientious, and a pleasure

— Michael K.

"We had an initial call with Green Stone (GS) and agreed to get an estimate. We did the same with several other contractors. The GS representative "Dutch" came to our home and was very knowledgeable of the PECO results and provided a detailed list of energy saving measures we could possibly... "We had an initial call with Green Stone (GS) and agreed to get an estimate. We did the same with several other contractors. The GS representative "Dutch" came to our home and was very knowledgeable of the PECO results and provided a detailed list of energy saving measures we could possibly pursue. The list was broken down into three specific areas based on PECO's report. Each section had an individual price and we were told we could do any or all of them and provided with the benefits of each. The team showed up on time, were very knowledgeable, professional and courteous. They explained what they were going to do before they did it and why they were doing it the way they were. They treated our home with respect and covered up and/or cleaned up before and after they were done for the day. The only surprises we received were pleasant. This included some attic work that did not need to be done as specified based on further inspection. The change in plan actually saved us some money from the original quote but the end result was the same. The guys finished on-time as promised and left all areas as clean or cleaner than before they arrived. "Dutch" also stopped by each day to ensure things were going well and to answer any additional questions we had. The majority of our work was attic work and pictures don't do the job justice. We are very happy with the work and results."my insulation job. In particular, I wanted to give a shout out to Greg who was on every aspect of the job. He was detail oriented, knowledgeable, conscientious, and a pleasure to work with. Get more information on this project by checking out our page on Angie's List!

— Mike K.

I wanted to thank you for your help with my insulation job. In particular, I wanted to give a shout out to Greg who was on every aspect of the job. He was detail oriented, knowledgeable, conscientious, and a pleasure to work with.

— Anna Massi,

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