Tag Archives: Title 24
Posted on 12. May, 2010 by Rebecca Firestone.
A few months ago we published an interview with a GreenPoint Rater to de-mystify the GreenPoints system that was suddenly taking California building departments by storm. Like LEED and several of the current rebate programs, GreenPoints has tie-ins to Title 24’s energy compliance scoring, and so we’ve had to help our clients to interface with this new standard.
There’s another standard that’s been around for a long time – the Home Energy Rating System, or HERS. For the first time, we are having to tell our clients that they will have to do at least one HERS verification in order to meet the new 2008 standards of California’s Title 24 energy code. Suddenly, everyone had questions. What in the heck do HERS raters actually do, and what does it cost? Is this going to be a huge headache or a minor annoyance? What benefit is there to HERS testing apart from compliance? What does a person have to do to become certified as a HERS rater?
Posted on 17. Nov, 2009 by Rebecca Firestone.
After January 1, 2010, all new homes in CA must include whole-house ventilation systems. Yes… we’ve made building envelopes so efficient, that now we have to in essence introduce highly controlled leakage. There are two mandatory ventilation features in the new Title 24:
- Intermittent exhaust fans for moisture control in all kitchens and bathrooms
- Whole-house continuous mechanical ventilation for indoor air quality (IAQ)
A good ventilation system will filter out indoor air pollutants (VOCs like formaldehyde from particleboard or acetone nail polish remover) as well as filtering outdoor air on the intake side; however, not all whole-house ventilation systems include outdoor air filtering. Here’s a summary of the ventilation course module from last week’s Title 24 update class.
Posted on 12. Nov, 2009 by Rebecca Firestone.
This past Monday, I went to an all-day Title 24 class with CABEC and didn’t fall asleep once! There were a few eye-openers worth sharing, since we’ve already been trumpeting the endless “Change is coming!” for months.
Title 24 has grown from a minor paperwork requirement into a PROCESS, with more forms, more steps, and more people involved. Bifurcating bureaucracy… what a surprise!
Posted on 13. Aug, 2009 by Rebecca Firestone.
Nearly every week, we are asked why Title 24 does not give credits for electric water heating if that electricity comes from solar or other self-generated power. In fact, it seems that many of the renewable energy developments occurring now are not fully recognized in Title 24, not even in the 2008 code. We’re in the position of telling people that their homes, which are designed to consume very little conventional power, may have trouble passing the Title 24 code if those homes rely solely on solar electric for all their home power, heating, cooling, and water heating needs.
So why does T24 continue to penalize electric resistance heat and water heating in solar homes? Why does T24 not give credits for self-generated power (geotherm, solar, wind, other)? And why can’t our utilities buy back excess power from customers who generate more than they use? Wouldn’t this help to reduce California’s grid load, save California homeowners money, provide entrepeneurial opportunities, and reduce American dependence on foreign oil?
Posted on 04. Aug, 2009 by Rebecca Firestone.
I know we’ve published several of these, but this is updated to show more specifics. These are the requirements that will be in effect when the new 2008 Title 24 goes “live” in January 2010.
These requirements reference two compliance methods, a prescriptive method and a performance method. The prescriptive method is simpler but offers less flexibility, whereas the performance method uses a software modeling program with a detailed series of inputs that can be modified to test various trade-offs. We at Green Compliance Plus use the performance method.
Posted on 04. Aug, 2009 by Alan Huguenot, CEPE.
The 2008 Title 24 requirements, which will become effective in January of 2010, will now require both HERS verification and electronic document filing and registration for all Title 24 documents, including the following:
- The CF-1R Certificate of Compliance, which completed and signed by both the Title 24 Document Author and the Architect
- The CF-6R Installation Certificate, completed by the installing contractor
- The CF-4R Certificate of Field Verification and Diagnostic Testing, completed by the HERS Rater