Warm In Winter. Cool In Summer.
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Residential & Commercial Insulation in Southwestern NH
New England’s weather requires buildings to have a higher standard for insulation than many other parts of the country. With decades of building and contracting experience, we saw firsthand how poorly fiberglass insulation performs — leading to lost money, less comfort and wasted energy resources.
Home Insulation in Southern New Hampshire
Farnum Insulators is your trusted NH insulation contractor. We offer both cellulose and spray foam insulation to ensure your home is energy-efficient, comfortable, and protected from extreme temperatures.
Our insulation services include:
Our insulation services include:
Comprehensive attic insulation to prevent heat loss during cold months and keep your home cooler in the summer.
Basement insulation is also vital for reducing energy costs and maintaining a comfortable living environment.
Interior window inserts to provide an added layer of insulation that reduces drafts and helps regulate indoor temperatures.
With our expertise and commitment to quality, we make your home more sustainable and comfortable, season after season.
Get a free estimate!
Commercial Insulation in Southern NH
Proper insulation in commercial properties is essential for maintaining energy efficiency, reducing operational costs, and ensuring year-round comfort for occupants.
We specialize in cellulose and spray foam insulation tailored specifically for commercial buildings. Our cellulose insulation, made from recycled materials, offers an eco-friendly solution with excellent thermal performance and noise reduction.
Trust Farnum Insulators to deliver solutions that meet the unique demands of New England’s challenging climate and optimize your building’s energy efficiency.
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OUR PROCESS
1
Assess your building’s insulation needs through thorough diagnostic testing.
2
Create the most cost-effective and non-invasive plan to increase your energy efficiency.
3
Find all available cost-saving incentives and grants to reduce your costs.
4
Help you enjoy your home or place of business more than you ever have.
Building Performance Institute certified and focused exclusively on insulating homes and businesses, we are the most trusted name in insulation.
CONTACT US TODAY TO START SAVING MONEY
Customer Reviews
Discover why Farnum Insulators is the #1 top-rated insulation company in Southeastern VT & Southwestern NH!
OUR SERVICES
Helping New Englanders save energy & be more comfortable in their homes since 2003.
Cellulose Insulation
Cellulose is a great insulation material with a high R-value. It’s treated against fire, mold and pests as well as being made from recycled material. We can work in new or existing structures and we’ll help you choose the most cost-effective and non-invasive methods to meet your insulation needs.
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Foam Insulation
Sometimes cellulose isn’t the best option. Damp basements, rim boards and some wall cavities are best insulated using this amazing spray-on foam. With high R-value, an ability to expand into a space and airtightness, we’ll advise you on which insulation is best for you.
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Indow® Interior Window Inserts
We are a certified Indow® Window dealer. These are interior windows that are nearly invisible, require no hardware, do not damage the window frames or trim, and double your windows’ energy efficiency. Indow® window inserts give you energy-saving insulation equivalent to double-pane windows, and they’re even better at insulating sound. Plus, you don’t have to worry about any lead contamination that can occur when your old windows are ripped out of the walls.
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Diagnostic Testing
We have the tools and expertise to identify problems in your home or building. We use a blower door test and infrared camera to find where you’re losing your energy dollars. During the inspection, we also check for moisture and basic structural integrity to make the best choices for you and your building’s overall health.
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Benefits of Insulation
in New Hampshire
Significant reductions in energy costs by minimizing heat loss in the winter and heat gain in the summer, leading to lower utility bills.
Eco-friendly insulation in NH: reduce carbon footprint due to improved energy efficiency.
Effective soundproofing with cellulose insulation, made from recycled, environmentally responsible materials.
Enhanced airtight sealing with spray foam insulation, which eliminates drafts and protects against moisture, mold, and air leaks.
Increased structural integrity and protection from environmental factors.
Additional comfort and temperature regulation with interior window inserts that provide an extra layer of insulation, reducing heat transfer through glass.
Long-term sustainability and return on investment through better energy efficiency and overall comfort.
The U.S. Department of Energy (DOE) states that proper insulation can reduce heating and cooling costs by up to 20%.
This reduction can translate into 10% of the total energy costs for an average home.
Why Choose Farnum Insulators?
Unmatched Expertise
Farnum Insulators brings extensive expertise and local knowledge to every project. Our team specializes in Vermont and New Hampshire-specific insulation solutions, keeping your home comfortable year-round.
Personalized Approach
We tailor our services—from spray foam to window inserts—to match your home’s unique needs. Our commitment to quality means using only top-grade materials for efficient, long-lasting insulation.
Affordable Energy-Saving Upgrades
We help make energy-saving upgrades more accessible by offering rebates and financing options.
Eco-Friendly Solutions
Choose Farnum for trusted, eco-friendly insulation solutions that prioritize your comfort and savings.
Partnerships That Matter
Energy and Building Efficiency Affiliations
Farnum Insulators is an Energy Efficiency Excellence Network contractor with Efficiency Vermont and won Partner of the Year in 2022.
Civic and Business Affiliations
FARNUM Insulators in the Community
Farnum Insulators is tied to our neighborhood and caring for our community is important to us. We support a variety of important organizations including the following:
INDUSTRY INSIGHTS
Stay updated with the latest news, expert tips, and trends in insulation.
FAQs
How much does insulation cost in New Hampshire?
The cost of insulation installation varies depending on factors such as the type of material used, the size of the area to be insulated, and the specific conditions of the property. At Farnum Insulators, we offer free estimates to assess your building’s specific needs and provide an accurate quote. Contact us now or call us at (802) 327-8521.
What should I expect from the insulation process?
Our insulation process begins with a comprehensive evaluation of your building’s needs through thorough diagnostic testing. During the inspection, we check for moisture and basic structural integrity to make the best decisions for the overall health of your building. Once the evaluation is complete, we develop the most cost-effective and non-invasive plan to increase your property’s energy efficiency.
How do I hire an insulation company in New Hampshire?
To hire an insulation company in New Hampshire, it’s advisable to research and select a company with experience and proper certifications. Farnum Insulators is certified by the Building Performance Institute and focuses exclusively on insulating homes and businesses, making us a reliable choice in the region.
What is the best type of insulation for New Hampshire?
In New Hampshire, where weather conditions can be extreme, it’s crucial to choose an appropriate insulation material. We advise you to opt for one of these insulation types:
- Cellulose Insulation: This material has a high R-value and is treated against fire, mold, and pests. Additionally, it’s made from recycled material, making it an eco-friendly option.
- Spray Foam Insulation: Ideal for areas such as damp basements, rim joists, and certain wall cavities. Spray foam has a high R-value, can expand to fill spaces, and provides air sealing.
CONTACT US
and let’s get started!
Please complete the form and we will contact you shortly. You may also contact us directly for immediate assistance.
info@farnuminsulators.com



