We increased our comfort while significantly decreasing our energy use with a deep energy retrofit (DER) supported by the National Grid DER pilot program.
Property
- Type:
- Single-Family Residence
- Address:
- 117 Davis Avenue, Brookline, MA 02445
- Size:
- 2,300 sq ft
- Designations:
- Deep energy retrofit
- Event Participation:
- NESEA Green Buildings Open House 2012 Host
Technology
- Type:
- Energy Efficiency
- Installed:
- January 2011
Professionals & Suppliers
- Builders:
- Synergy Construction
- Energy Auditors:
- Building Science Corporation
What You Need to Know
Description:
Roof: R-48 with closed-cell spray foam, interior only (applied before National Grid DER) Walls: R-40 with 4" of polyisocyuranate rigid foam on exterior and blown-in cellulose in cavities Basement walls: R-18 with closed-cell spray foam (applied before National Grid DER) Windows: R-5 Paradigm Windows double-hung, awning, and casement replacement units (31 units total) Heating and DHW: Buderus modulating condensing boiler with super-insulated DHW storage tank Ventilation: Balanced ventilation with a 75% efficient Heat Recovery Ventilator
My Motivation:
#1--to increase energy efficiency of home #2--to increase comfort of home and gain back space that we rarely used because of uncomfortable temperatures #3--to benefit the environment
Advice:
Our initial insulation project--foaming the basement and rafters--greatly improved the energy efficiency of the home. Completing the DER in the second stage only made sense because we were already removing the siding (vinyl, to be replaced with clapboard) for aesthetic reasons.
Open House Info:
Oct. 13, 2012; 10AM - 1PM
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