Greg Pedrick, Project Manager – Buildings R&D at NYSERDA, presents the results of his two-year Deep Energy Retrofit project. The presentation includes Greg presenting and easy to see slides that show hundreds of product and procedural details; the overall presentation is divided into the following five conveniently focused segments:
Overview: Greg defines “Deep Energy Retrofit” (DRF) and explains the benefits of this approach. Shows some of the key “physics” involved in doing the job correctly. He explains how he selected “typical homes” and BPI Accredited Contractors for this project and the scope of work performed. (37 Minutes)
Basements: Greg explains how old, damp basements were brought up to DRF standards. For the most part rigid sheets of insulation were used throughout this project. Many problems were encountered and resolved as they worked through the issues of the "typical" homes, including dealing with drainage, insulating the basement floors, and rim joist details. (24 minutes)
Walls, Attics & Roofs: All the wall work was performed outside of the house – the occupants were minimally affected. The siding was stripped, windows were built out, and then insulation and siding were applied. A lot of important details here, including windows, eave & foundation transitions, porch intersections, layers of insulation, siding & trim support, attic flat air sealing & insulation, and finally ventilation! (31 minutes)
Mechanicals: After all the above work was completed, we are able to take advantage of the highly insulated, air-tight envelop. A much smaller heating system is now possible; ultimately it was found that a tankless high efficiency water heater was sufficient. The tankless water heater and whole house ventilation system (heat recovery ventilator) was integrated with the existing duct systems and a fan coil with ECM motor. All the details and schematics are included. (21 minutes)
Results: Air flow was reduced about 68 – 75%, heating and hot water loads were reduced about 50%, but electric usage was about the same. Greg points out that this project did not address plug loads and that it is typical for people who save money in one area to spend a little more in another area. Direct DEF costs (excluding deferred maintenance items) was about $74,000 per family unit. Greg believes the costs can be driven down by improved industry practices and new materials, which is the focus of his current project. (11 Minutes)
The presentation and recording was sponsored by ADKCAP (Adirondack Climate and Energy Action Plan) and the Wild Center. It may be viewed here. Scroll down until you get to the portion of the presentation you want to view.
Greg’s original 144 slides are available here.