Presentation on theme: "Eco Houses of Vermont, LLC"— Presentation transcript:
1 Eco Houses of Vermont, LLC Passive houseA Quick Path to the Comprehensive Energy Plan’s GoalsPresented by:Chris WestCertified Passive House ConsultantPresident, PHAUS VtChair, HBRANV Green CouncilCertified Green ProfessionalEco Houses of Vermont, LLC
2 Thanks to Margaret Cheney Moving the political agenda toward super energy efficient buildingsPushing for Thermal Energy Taskforce legislationSupporting RBES Code Compliance with teethWe need to all support Margaret and other politicians who are working on this issue!
3 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.
4 Net Zero Goal: Two paths Big Leaky House40+ panels to get to Net Zero
5 Net Zero Goal and PH+Reasonable Sized PHA few PV panels
6 Home Building Energy Triangle It’s the Recycling Triangle for Home Energy1st Reduce Load3rd Use fossil fuels sparingly if needed2nd Use as many as you can renewables
7 Passive House: I’ve heard of that. One of the most sighted standards in the USSteadily gaining traction in the Building Industry as the Gold Standard for energy efficiencyRegularly sited in:Journal of Light ConstructionGreen Building AdvisorDoE: Energy Star and Building AmericaBBbD presentationsEven ppl who don’t like it reference it!
8 PH: What is this mystical beast? Uses the apex of Building ScienceDeveloped in the 1990’s by Wolfgang Feist in GermanyImported to the us in 2005Spreading across the country and VermontInfluencing Building Standards in Vt and the US
9 How does it relate to other programs? Energy Efficient Housing Concepts in the US:Vermont Energy Code (RBES): required for all new constructionEnergy 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 Code70% more efficient than Energy Star55% more efficient than Building AmericaCosts only max. of 15% more to build
12 Passive House Energy Standard Heating Load (Site): 4.75 kBTU/SF/YRCooling Load (Site): 4.75 kBTU/SF/YRTotal Energy Demand (Source): 38 kBTU/SF/YRAir Tightness: .6 50pa
13 Passive House Concept Controlling Heat Loss: Insulation R58 WALLS R90 CEILINGR60 SLABWINDOWSHigh PerformanceU value 0.16High Solar Heat Gain
14 Passive House ConceptControlling Heat Loss: Eliminate Thermal Bridging
15 Passive House Concept Controlling Heat Loss: Airtight Envelope ACH50(Vermont Energy Code = 4 ACH50)
16 Passive House ConceptCapturing Heat Gains: People
17 Passive House ConceptCapturing Heat Gains: Solar Heat Gains
18 Passive House ConceptControlling Gains Seasonally: Orientation and Windows
19 Passive House ConceptProviding Fresh Air: High Efficiency Heat Recovery Ventilation
20 Passive House ConceptIntegrating all of these elements into one house
21 Passive House Concept High Efficiency Heat Recovery Ventilation 0.75 w/cfm or lessTriple glazed windows with thermally broken framesR-value of 7.1 or betterUse materials with low embodied energyFoams only where you mustShort runs for DHWCompact building designs easier to hit PH Standard
22 Passive House Results90% reduction in heating and cooling loads when compared to Code70%-80% reduction in total energy demandSuperior indoor air qualityOccupant comfortLower annual energy costsSmaller carbon footprint
23 People say PH is expensive Results from actual houses in Vermont:Higher construction costs (10% to 15%)Doesn’t cost more! Monthly savings from Day 1.Much higher quality construction means more durable and therefore a better value over time.
24 What are we talking about? What is the payback on a marble counter top?
25 Passive House CostsCosts up to 15% more to build than conventional constructionSaves 90% on Heating and Cooling Bills
27 Leading the change in building Just by being there Passive House has:Set the bar higher for all building standardsTaught builders and architects techniques that can be incorporated in “less” than Passive House projectsShown that the “too much” argument doesn’t float if monthly out of pocket is same!Given legislatures data on applying modern building science in actual homes
28 Vermont Case Study: HfH Charlotte 1,050 sq. feet interior space
45 Conclusion Passive House High quality home Healthier living environmentSlightly more expensive to buildPayback 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 expectedZero energy home easily attainable with PH
46 Visit a Passive House International Passive House Days