Archive for September, 2011
Posted on 29. Sep, 2011 by Rebecca Firestone.
OK, I’m the first to admit that I know next to nothing about water heaters. Aren’t they those white cylinders that live in garages, as far as possible from the kitchen and the shower? Well… yes and no. In our Title 24 work, which is architect-designed custom single-family projects, the water heater is usually the last thing on anyone’s mind. However, on many of our analysis projects, the quickest, cheapest way to comply with California’s stringent energy-efficiency requirements has been to upgrade the water heater – and sometimes, to include a solar hot water credit.
This article explains how to assess water heater efficiency numbers, including the use of a handy lookup database at the California Energy Center’s web site.
Posted on 15. Sep, 2011 by Rebecca Firestone.
As most of our readers now know, California’s energy code got a lot stricter in January of 2010. Increasingly, HERS tests are required to comply, even for custom residential projects. HERS tests are special third-party field inspections for things like ductwork, insulation, and air-conditioner efficiency. These tests are called out on the Title 24 energy compliance report, also known as the CF-1R. This energy report must be included on all Building Department submittals statewide throughout California to obtain a building permit. The energy report is then reviewed as part of the plan check process.
And now, a new requirement, or really an old one that’s just now being enforced: All CF-1R reports that call for a HERS test must be officially “registered”. Don’t say we didn’t warn you. Plan checkers are starting to kick back custom residential submittals if they don’t see a CalCERTS watermark on the energy report.