Farnum Insulators

Farnum Insulators is an insulation company: attics, basements, crawl spaces, spray foam and blown-in cellulose. The company says it has been in business 23 years, and its website lists spray foam, cellulose, basement and crawl space insulation, Indow interior window inserts and diagnostic testing. On Google it holds 4.9 stars from 113 ratings, and its BBB grade is A+. A recent customer had a crawlspace and attic insulated and said the team was polite and neat and that salesman John was good to work with. A recent customer said the rep, the workers, the auditor and the person on the office phone were all helpful, and that the process stayed clean and organized. A 2025 customer said Farnum replaced the 6 inches of original 1970 fiberglass in a newly purchased house's attic with 18 inches of blown-in cellulose. A 2024 customer with a 40-year-old modular ranch said John explained why replacing the old, poorly installed fiberglass would help, that Farnum connected them with Efficiency Vermont for a major rebate, and that the insulating and sealing made the house noticeably less drafty. A 2024 customer said Sonia gave extra tips after both blower tests and that the home was significantly more energy efficient after the spray foam project. A 2024 customer said the crew worked together with a roofing crew to reach a space above the garage. A 2024 customer said the team gave options without trying to upsell, so costs were reasonable. A 2023 customer said Farnum sealed and insulated an old basement with lots of hard-to-reach places. A 2021 customer said James and Jason did the prep and spray foam insulation under a sunporch with 3 1/2 feet of clearance, then cleaned up. A 2023 customer who had insulation installed said they still had not received their rebate check. Vermont lists its residential contractor registration, 174.0000260, as active, held by Farnum Insulators, Inc.