COVID-19 Update:

To protect the health of our staff and our customers, Efficiency Vermont offices are closed to the public. We have cautiously begun scheduling project related site visits when required. You can find more information on our safety protocols here.

We know that you need support in reducing energy costs now more than ever, and we will continue to launch new offers and programs over the course of the summer. In the mean time, our customer support team is available to help you remotely. Contact us at (888) 921-5990 or

How to tighten up your home for better cold weather comfort (video)

1 min read
Insulation & Air Sealing

Finding and sealing air leaks is an easy, low-cost way to make your home more comfortable and save on heating and cooling costs.

How to air seal your home

Watch this video for professional tips on how to seal problem areas such as windows, outlets, and doors. Then download the printable flier.

Materials checklist
  • Incense (to help identify air leaks)
  • Silicone, acrylic latex caulk and/or low expanding foam for air sealing
  • Cans of expanding spray foam insulation
Top 10 trouble spots for air leaks
  1. Exterior door frames
  2. Window frames
  3. Outlets and switches
  4. Attic entrance
  5. All ducts
  6. Plumbing, fuel, or electrical penetrations throughout the home
  7. Sill plates
  8. Outdoor water faucets
  9. Recessed lights
  10. Cracks and seams in the ceiling
Rebates and resources for DIY projects

We offer technical guidance and rebates to help cover the cost of DIY insulation projects or professional weatherization services.