By participating in National Grid’s Deep Energy Retrofit pilot program, we will demonstrate that energy efficient retrofits can be done for a reasonable cost (with some sweat equity).

What You Need to Know


Here are some geeky highlights: Roof: R-61 with 6” of polyisocyanurate rigid foam on exterior and 6”cellulose on interior. Walls: R-45 with 4” of polyisocyanurate rigid foam on exterior and 6" cellulose on interior. Basement walls: R-34 with 2.5” of close-cell spray foam on interior plus 5" cellulose . Basement floor: R-12 with 3” rigid EPS foam under a new concrete slab. Windows: R-5+ Accurate Dorwin triple glazed fiberglass windows and existing window quilts. Doors: R-5 Therma-Tru Fiberglass entry doors and R-4 Pella sliding patio door. Heating and cooling: Fujitsu high efficiency heat pump, with supplemental solar thermal. DHW: Solar thermal drain-back system (next year) with electric back-up. Ventilation: Fantech Heat Recovery Ventilator for balanced ventilation, plus kitchen and bathroom fans.

Other Benefits:

Increased indoor comfort and air quality, no ants, no radon, no combustion appliances, fossil fuel free, and a nice home to grow old in!

Maintenance Requirements:

none that we know of... ; )

Open House Info:

From the East – take route 2 West to mile marker 65, just after the “Entering Erving” sign. Turn LEFT at the sign for 2A East and Erving State Forest. Go 50 yards and turn LEFT onto 2A towards Orange. From the West – take route 2 East and take the right fork onto 2A East, about 1⁄2 mile after the Erving Paper Mill. From route 2, go east on 2A for 3⁄4 mile and take your first left onto Mossbrook Rd (Wendell Depot Rd will be on the right). In about 1 mile you will be in Warwick and the road becomes Wendell Rd, At about 2 miles from Rte 2A, the road turns sharply right and then after 1⁄4 mile, sharply left. 881 Wendell Rd. will be on your left immediately after the sharp left turn. Look for the brown mailbox with “Kurkoski” on it. The house, not visible from the road, is up the steep dirt driveway. Come on up! NOTE – there is no cell phone service in Warwick, but folks are very helpful if you get lost.

View Other Case Studies
Melissa Grader - Wendell - MA
Melissa Grader - Wendell - MA

Single-Family Residence|Solar PV

Melissa Grader - Wendell - MA
Melissa Grader - Wendell - MA

Single-Family Residence|Solar Hot Water

Search for Other Case Studies
EnergySage Marketplace
Get the best deal on solar.
Get Started