DIY You can explore these more detailed projects for upgrading the energy efficiency of you home. Whether working with a contractor or doing it yourself, these documents should help. Do It Yourself Attic Air Sealing Attic Access HVAC Systems Insulation Kneewalls Pipes & Vents Radiant Barriers Ventilation Basement Comfort & Safety Foundation Decisions HVAC System Insulating Floor Systems Insulating Walls & Rim Joists Sealing Doors & Windows Sealing Foundation Subfloor Sealing Walls & Rim Joists Energy Efficiency Do it Yourself Home Energy Audit Tags efficiency diy savings