Presentation on theme: "PASSIVE HOUSE Eco Houses of Vermont, LLC Presented by: Chris West Certified Passive House Consultant President, PHAUS Vt Chair, HBRANV Green Council Certified."— Presentation transcript:
PASSIVE HOUSE Eco Houses of Vermont, LLC Presented by: Chris West Certified Passive House Consultant President, PHAUS Vt Chair, HBRANV Green Council Certified Green Professional A Quick Path to the Comprehensive Energy Plans Goals
Thanks to Margaret Cheney Moving the political agenda toward super energy efficient buildings Pushing for Thermal Energy Taskforce legislation Supporting RBES Code Compliance with teeth We need to all support Margaret and other politicians who are working on this issue!
Comprehensive Energy Plan Recommends that 100% of new homes built in 2030 be Net Zero Houses. 30% of all new homes built to Net Zero by 2020.
Net Zero Goal: Two paths Big Leaky House40+ panels to get to Net Zero
Net Zero Goal and PH + Reasonable Sized PH A few PV panels
Home Building Energy Triangle Its the Recycling Triangle for Home Energy 1st Reduce Load 2 nd Use as many as you can renewables 3rd Use fossil fuels sparingly if needed
Passive House: Ive heard of that. One of the most sighted standards in the US Steadily gaining traction in the Building Industry as the Gold Standard for energy efficiency Regularly sited in: Journal of Light Construction Green Building Advisor DoE: Energy Star and Building America BBbD presentations Even ppl who dont like it reference it!
PH: What is this mystical beast? Uses the apex of Building Science Developed in the 1990s by Wolfgang Feist in Germany Imported to the us in 2005 Spreading across the country and Vermont Influencing Building Standards in Vt and the US
How does it relate to other programs? Energy Efficient Housing Concepts in the US: Vermont Energy Code (RBES): required for all new construction Energy Star 3.0: DoE Program (30% more efficient than Code) Building America: DoE super energy savings Program (15% better than EStar) Passive House: 90% more efficient than Code 70% more efficient than Energy Star 55% more efficient than Building America Costs only max. of 15% more to build
Energy Usage Comparison
How does Passive House get there?
Passive House Energy Standard Heating Load (Site): 4.75 kBTU/SF/YR Cooling Load (Site): 4.75 kBTU/SF/YR Total Energy Demand (Source): 38 kBTU/SF/YR Air Tightness:.6 50pa
Passive House Concept Controlling Heat Loss: Insulation R58 WALLS R90 CEILING R60 SLAB WINDOWS High Performance U value 0.16 High Solar Heat Gain
Passive House Concept Controlling Heat Loss: Eliminate Thermal Bridging
Passive House Concept Controlling Heat Loss: Airtight Envelope ACH 50 (Vermont Energy Code = 4 ACH 50 )
Passive House Concept Capturing Heat Gains: People
Passive House Concept Capturing Heat Gains: Solar Heat Gains
Passive House Concept Controlling Gains Seasonally: Orientation and Windows
Passive House Concept Providing Fresh Air: High Efficiency Heat Recovery Ventilation
Passive House Concept Integrating all of these elements into one house
Passive House Concept High Efficiency Heat Recovery Ventilation 0.75 w/cfm or less Triple glazed windows with thermally broken frames R-value of 7.1 or better Use materials with low embodied energy Foams only where you must Short runs for DHW Compact building designs easier to hit PH Standard
Passive House Results 90% reduction in heating and cooling loads when compared to Code 70%-80% reduction in total energy demand Superior indoor air quality Occupant comfort Lower annual energy costs Smaller carbon footprint
People say PH is expensive Results from actual houses in Vermont: Higher construction costs (10% to 15%) Doesnt cost more! Monthly savings from Day 1. Much higher quality construction means more durable and therefore a better value over time.
What are we talking about? What is the payback on a marble counter top?
Passive House Costs Costs up to 15% more to build than conventional construction Saves 90% on Heating and Cooling Bills
Leading the change in building Just by being there Passive House has: Set the bar higher for all building standards Taught builders and architects techniques that can be incorporated in less than Passive House projects Shown that the too much argument doesnt float if monthly out of pocket is same! Given legislatures data on applying modern building science in actual homes
Vermont Case Study: HfH Charlotte 1,050 sq. feet interior space
Vermont Case Study: HfH Charlotte
Vermont Case Study: Mechanicals
Vermont Case Study: Sensor Data
Vermont Case Study: HVR Data
Vermont Case Study: Monthly Utility Bills Includes Heating, Hot Water, Cooking, Lighting and all appliances.
Passive House Second Home
Passive House Second Home Performance
Passive House Performance Comparison to Energy Star
State of PH in Vermont First PH in Vt finished 2011 Current PH in Vt: 14 6 certified 3 almost PHs (failed ACH50) 2 in design phase More in the works! 1 almost PH
What Do Passive Houses Look Like?
Conclusion Passive House High quality home Healthier living environment Slightly more expensive to build Payback in 3 – 7 years (depending on price rise) Monthly cost is the same from day one! 90% cheaper to live in (heating/cooling bills) High resale value expected Zero energy home easily attainable with PH
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