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--- policy:massachusettes [2025/03/20 14:46] – [Part 2: “Crushing” Space Heating: The Key to Decarbonization] yaling.hsiao@passiv.de
+++ policy:massachusettes [2025/03/20 15:04] (current) – yaling.hsiao@passiv.de
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 In local vernacular, Passive House is described as something that “crushes” space heating. This is because it doesn’t just reduce space heating incrementally, but near eliminates it [Zimin 2022]. Passive House’s ability to “crush” building space heating to near elimination enables a “grid friendly” swap from gas to electric space heating, unlocking decarbonization of building space heating previously not thought possible.
+[{{ :picopen:m2.png?600 |Source: Picture is from the presentation of 27th International Passive House Conference 2024}}]
 Prior to Passive House, space heating reduction was not a priority in Massachusetts. Codes and popular rating systems like LEED targeted reductions in total building energy and were neutral as to what was improved or reduced (e.g. gas, electricity, lighting, heating, cooling, fans, envelope, etc. were all treated the same). Indeed, it was not uncommon for designs to increase space heating. This was happening because energy code allowed, for example, swapping reduced envelope performance for improved lighting performance. Code was satisfied so long as total energy use was reduced.
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 During this time, the community of citizen-advocates mobilized by the GCA were taking note of Passive House’s rapid adoption and cost-effectiveness. Local training and advocacy groups like Passive House Massachusetts and Built Environment Plus emerged during this time.
-[{{ :picopen:m2.png?600 |Source: Picture is from the presentation of 27th International Passive House Conference 2024}}]
 ===== Part 4:  TEDI Codes and a Passive House Mandate Arrives =====