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Vertical limitations and code requirements make it difficult to impossible to install a water heater in a crawlspace. Here's what you need to know.
Current versions of the model code require air-tightness testing of heating and cooling ducts. Here’s an introduction to performing those tests.
Q: When you're doing a blower-door test, does it matter whether you're pushing air in or pulling it out? In other words, is the air infiltration rate the same at -50 pascals as it is at +50 pascals? And if so, when would you use one approach and when the
The Minneapolis Blower Door comes equipped with everything needed to measure airtightness or diagnose air-leakage problems, says the manufacturer.
Abstract goes here.
Testing spray-foam jobs; ridge beams and collar ties; safety reminder; more
Using PEX in solar water heating; solar hot-water storage; hot-water recirculation; leak testing
After testing deck ledger attachments, researchers at Virginia Tech crank up the loads on guardrail posts to see what it takes to make a code-worthy connection.
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