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Published byWaylon Clymer Modified over 10 years ago
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Retrofitting: Lessons from the Residential Market
Paul Francisco Indoor Climate Research & Training Illinois Sustainable Technology Center
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What People “Like” Windows Doors Insulation
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What is “Easy” Windows Doors Insulation
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What is “Hard” Air sealing – where are the leaks?
Space conditioning – if you want to use a different technology
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Courtesy: Larry Harmon
Courtesy: Brian Kumer
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Source: Anis et al. 2013. ASHRAE Transactions.
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What Works SIR = 𝐹𝑖𝑟𝑠𝑡−𝑦𝑒𝑎𝑟 𝑠𝑎𝑣𝑖𝑛𝑔𝑠 ∗𝑈𝑃𝑊 𝐶𝑜𝑠𝑡 Metric?
In low-income weatherization, the metric is Savings-to- Investment Ratio (SIR) SIR = 𝐹𝑖𝑟𝑠𝑡−𝑦𝑒𝑎𝑟 𝑠𝑎𝑣𝑖𝑛𝑔𝑠 ∗𝑈𝑃𝑊 𝐶𝑜𝑠𝑡 Means how many times the measure will pay for itself
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What Works Air sealing Insulation
Upgrades to high-efficiency space conditioning systems Sealing ducts outside of conditioned space Lighting Refrigeration
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What Works Primary goal should be to have the thermal and pressure boundary aligned Air seal first Then insulate Air leakage is like having the windows open
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Stack Effect Positive pressure (with reference to outside)
3/31/2017 Positive pressure (with reference to outside) Neutral pressure plane Negative pressure (with reference to outside) Courtesy David Keefe, Vermont Energy Investment Corp. 13 13
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What Doesn’t Work Routine weatherstripping and caulking Tune-ups
Sealing ducts inside conditioned space Doors Windows
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Thank you! QUESTIONS? Paul Francisco
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