Conversational Form (#5) Current Energy Efficiency Attic insulation: loose-fill at least 12”; batting 11”; or spray foam 6-10” Attic access door is insulated Check attic ventilation Basement joists on perimeter of building are insulated Exterior walls are insulated Insulation around interior vents (heat registers in floor, etc.) Exterior penetrations through sidewalls caulked Furnace: Energy Star or efficiency rating (AFUE or % heat produced/$) above 80% Furnace: Estimate 15-25 years furnace lifespan, lower AFUE over time Air conditioner: High efficiency (SEER rating 14 or higher) Air conditioner: Estimate 10-15 year lifespanOther Questions or CommentsYour NameEmailSubmit