1 / 7

Retrofit PTCS Duct Sealing SGC Manufactured Homes

Retrofit PTCS Duct Sealing SGC Manufactured Homes. Energy Savings Analysis. The Issue. Current RTF Assumption: All SGC homes have tight ducts: But utilities are finding homes that were certified as SGC that need duct sealing. SGC/NEEM Specification History.

hila
Download Presentation

Retrofit PTCS Duct Sealing SGC Manufactured Homes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Retrofit PTCS Duct SealingSGC Manufactured Homes Energy Savings Analysis

  2. The Issue • Current RTF Assumption: All SGC homes have tight ducts: • But utilities are finding homes that were certified as SGC that need duct sealing.

  3. SGC/NEEM Specification History • 1992 – SGC spec (MAP) - prescriptive duct sealing requirement. • 1997 – SGC specs updated to require butyl tape • 2004 – SGC specs updated to require mastic and duct testing of each floor in the factory. Before 2004, is there much difference in the duct tightness of a SGC home and a nonSGC home?

  4. Utility Data Show a Need for Sealing Grays Harbor PUD Data • 20 homes total • All SGC or Energy Star • 9 from pre 2004 • 5 needed sealing • 11 from post 2004 • 0 needed sealing EWEB Data • Of 295 certified homes tested, 67% needed sealing

  5. Then What’s the Baseline for SGC? There’s some data… (cfm25 to exterior/sq.ft.)

  6. CC and Ecos Databases

  7. Recommendation • Use the same leakage as nonSGC homes for SGC homes (originally from CC data).

More Related