Contact Us For
A Free Estimate!
Reviews From Cos Cob
Products & Services
Home Energy Saving & Evaluations
Energy Efficiency Evaluations
Energy Saving Devices
Energy Saving Products
Energy Saving Tips
Home Energy Evaluation
Home Energy Conservation
Home Insulation
Attic Insulation
Blown In Insulation
Cellulose Insulation
Duct Insulation
Green Insulation
Insulation Contractors
Pipe Insulation
Reflective Insulation
Rigid Foam Insulation
Roof Insulation
SilverGlo Insulation
Spray Foam Insulation
Wall Insulation
Window Insulation
Air Sealing
Sealing Air Leaks
Air Duct Leakage
Air Duct Sealing
Air Leakage Testing
Door Air Seal
Window Air Leakage
Radiant Barrier
Radiant Barrier Insulation
Radiant Barrier Cost
Roof Radiant Barrier
Ductwork Repair
Ductwork Installation
Ductwork Cost
Furnace Ductwork
Replacement Windows & Doors
Anderson Replacement Windows
Best Replacement Windows
Fiberglass Replacement Windows
Home Window Replacement
Low E Glass
Low E Windows
Marvin Replacement Windows
Vinyl Replacement Windows
Company Awards
Home Advisor 3 Year Award
We have been helping homeowners make their home more comfortable as a member of HomeAdvisor for 3 years.... [Read more]
Dr. Energy Saver of Connecticut Receives The 2016 Super Service Award from Angie's List
We are proud to receive the 2016 Angie's List Super Service Award! Angie's List Super Service Award 2015 winners have... [Read more]
Best Places to Work in Connecticut
For the 3rd time, Basement Systems (sister company to Dr. Energy Saver, also owned by Larry Janesky) has won the... [Read more]
More Awards

Cos Cob, CT's Leading Insulation Professionals

Just wanted to follow up and let you know that we’re definitely seeing benefits from the attic insulation. Our playroom...
Happy Customers Surrounding Cos Cob, CT
Work Requests

Click the icons to see what our customers had to say.

Dr. Energy Saver Of Connecticut is an authorized franchisee of the nationally renowned Dr. Energy Saver network of the best energy-conservation contractors across the country. We are not just a contractor company, we specialize in helping you understand your home's current energy efficiency, suggest repairs, and we also do the work! You'll receive the maximum energy and cost-saving results with least amount of hassle.

Dr. Energy Saver Of Connecticut is also the exclusive distributor of the award-winning SilverGlo insulation. SilverGlo is a unique type of rigid foam insulation offering immunity to moisture and mold, a high R-Value and excellent air sealing. Our SilverGlo rigid foam board is industry leading, and is one of the easiest to install in any part of your home.

Cos Cob, CT  Home Energy Savings Expert

We specialize in a variety of services aimed to lessen your home's carbon footprint and save energy and money each month! We offer it all, from air sealing to ductwork to insulation services in Cos Cob, CT.

At Dr. Energy Saver, we not only test and investigate your home's energy usage, but we will discuss and prioritize the proper repairs. You'll know which ones will save you the most energy and why. This will also help direct you in making the best decision for you and your family. 

Cos Cob's Window and Door Replacement Expert

At Dr. Energy Saver Of Connecticut, we offer homeowners of Cos Cob reliable window and door replacement options. Did you know that your home's windows and doors play a big part in maintaining the overall comfort of your home?  In fact, if doors and windows do not close like they are designed, this can cause air leaks and this will cost you more in energy costs.  We offer a variety of windows and doors such as low e glass windows for all areas of your home, and high quality patio and sliding glass doors.Our energy efficient replacement windows and doors have been proven time and time again to improve the energy efficiency and comfort of your home. As the trusted replacement window and door contractor of CT, we provide our customers with nothing but the best!  Contact us today for a FREE window and door replacement quote!

  • Low e Glass Replacement Windows
  • Skylight Installation 
  • Patio & Sliding Glass Doors
  • Door Replacement 

Proper Insulation Will Help Decrease Your Energy Bills All Year

As a Connecticut homeowner, you know full-well how harsh the winters and summers can be here. One of the best ways to save on your energy bills for years to come, is to update your home's insulation. Dr. Energy Saver Of Connecticut is a professional spray foam and blown insulation contractor, catering to residential homes in Cos Cob and nearby. Hop on the path to savings by contacting us today! 

We like using spray foam insulation for many homes due to the fact that it is one of the best types of insulation for reaching those hard to reach places, offers a great air sealing benefit, and is very easy to apply.  In many homes with out spray foam insulation, homeowners have reported a 30% or more energy cost savings.  Our 2 part spray foam offers a great return on investment and is great at making a home more comfortable. 

Insulation Services We Offer:

  • Home Energy Evaluations
  • Spray Foam Insulation
  • Sealing Air Leaks
  • Radiant Barrier Installation
  • Ice Dam Prevention
  • Floor Insulation
  • SilverGlo Insulation
  • Attic Insulation
  • Blown-in Insulation
  • Crawl Space Insulation
  • Injection Foam
  • Basement Insulation

Ice Dam Repair & Prevention Solutions

Homes in this area of the country are exposed to frigid temperatures and snow every winter.  Because of this, ice dams are a common issues that homeowners deal with.  Ice dams are caused when heat inside your attic warms the underside of the roof and causes ice and snow to melt. Ice dams can cause serious damage to your roof and can leak into your attic. When we talk about ice dams, one of the most frequent questions we get asked are" how do I prevent or repair ice dams?".  Preventing ice dams is fairly simple with the use of proper insulation and air sealing. If your home is facing ice dam issues, contact the experts at Dr. Energy Saver Of Connecticut for a FREE quote today!

Get a Free Spray Foam or Blown Insulation Estimate from Cos Cob's Trusted Contractor

For a FREE, no-obligation services estimate in Cos Cob, CT, you'll also receive a free copy of "Saving Energy and Money at Home," a great book to use as you begin to create a more comfortable, healthy, and energy efficient home!

Job Stories From Cos Cob, CT
Insulated Garage Ceiling in Cos Cob, CT

These Cos Cob, CT homeowners bought a newer home for their expanding family. They realized the room above the garage, which was intended for their children to play in, was uncomfortably cold in the wintertime. They called Dr. Energy Saver of Connecticut in order to assess the situation. They quickly realized the discomfort was caused by the floor above the garage not being insulated. This is a common mistake in contracting because it is mistaken as an interior floor, but when your garage door is constantly opening and closing and under insulated, your bonus room above it suffers.

We sent out our trusted crew who were very experienced and well trained in this type of installation. They cut access holes from inside the bonus room in order to get to the floor joist cavities. They used a hose that sent pressurized dense-pack cellulose insulation into the cavities. This allows there to be a more airtight insulated layer with as much insulation in the floor as possible to protect their kids from uncomfortable living spaces.

The homeowners now feel much more confident in letting their children spend time in a now comfortable bonus room.

Work Requests From Cos Cob, CT
Project Location: Cos Cob, CT
We have previously done an energy audit and believe the back wall of our house lacks insulation or has insufficient insulation. We would like to have blown in insulation (from the interior) as we will be removing cabinetry from the affected wall so there will be more access.
Project Location: Cos Cob, CT
I would like to find out how I can better insulate my attic and home in order to improve our energy efficiency.
Project Location: Cos Cob, CT
I recently purchased a home built in 1908. I would like to do some, or all, of the following: Stop air leakage at doors and some windows (immediately) Improve / bolster attic insulation (immediately) Energy Efficiency "Audit" (February or March of 2018) Improve / bolster basement insulation (next 1-2 years) Replace single-pane windows (eventually) Replace some kitchen appliances Please contact me by text message or email to schedule a visit to my home. Regards, -Nick
Project Location: Cos Cob, CT
Attic rafters may need insulation?
Project Location: Cos Cob, CT
Greetings- Looking for a quote on crawl space and attic areas. Have had a previous audit and quote on the space, but wasn't happy with the process and subsequent price. Specifically, I've had to call 4X to get a followup appointment for the detailed quote. The detailed quote was almost double what the initial estimate that was provided. Very interested in moving forward with work and leveraging some of the state rebates.
Project Location: Cos Cob, CT
Cooling issues, inconsistent room temps., high electric bills
Project Location: Cos Cob, CT
I need insulation for crawl space
Project Location: Cos Cob, CT
Attic insulation need
Project Location: Cos Cob, CT
My house is a 1770s house, and I need help to lower my energy bill.
Project Location: Cos Cob, CT
We are going to be adding on a small addition (master bedroom above existing family room) and would like to explore options to add either central air or some mini split systems.