Letter to the California Energy Commission 5.19.17

Dear California Energy Commission,

I’d like to let you know about some failures in the energy code system as I see it in the field as a HERS rater testing alterations of existing houses and new houses.

I work from Silicon Valley to the Wine Country, up and down the Peninsula and in the East Bay Area. I am usually in two or three houses per day. I’ve owned Building Energy Compliance Testing, www.bect.us since June 2014.

What I see is that the only time a house gets HERS tested is when it is new construction, there is an addition or major remodel and it includes a new furnace and ducts. If a homeowner just gets a new HVAC system, it rarely gets permitted and tested. I’ve spoken to other HERS raters and energy consultants, we all suspect that only about 5% of new or altered HVAC systems in California get HERS tested.

Every time I go to a job and meet an HVAC contractor I ask them how they sized this system. They almost always answer, “Square feet.” When I dig deeper into it, they often tell me that the rule is 500 square feet per ton of air conditioning.  Often times, they tell me that the guy at the supply house told them what size to buy. I tell them that the state of California requires ACCA Manual J, D and S calculations. I have one client who I know uses Wrightsoft calcs on every job.

This lack of design before construction causes real problems. I often see 5 ton AC systems on smaller houses in fog banks. Contractors usually fail airflow tests because they wildly undersize cold air returns. This makes the testing process a burden to both the homeowner who can’t get the job “finalled” and has to pay for multiple HERS tests. These big AC systems contribute to peak electric loads, uncomfortable houses and high energy bills.

The problem is with the building department when a job is permitted. When one submits plans for an addition or new construction job to a building department they require structural engineering. What they don’t do is require the engineering on the HVAC system even though the builder or owner signs off on Calgreen and the T24 report and mandatory measures.  Calgreen includes 4.507.2, stating that heating and AC systems shall be sized, designed using ACCA Manual J, D and S.

There is a real disconnect here that needs to be addressed by the CEC, Building Departments and the Contractors State License Board. I’d like to get the heads of these departments in a conference room and have them figure out a way to get energy code compliance above 5% and closer to the majority of jobs.

While I love the fact that the CEC is taking us to Zero Net Energy buildings by 2020, I find it absurd that 95% of current HVAC jobs are not achieving the 2016, 2013 or any other year of the code. HVAC contractors could be the champions of building an energy efficient economy in California. However, what I see is that the vast majority of them are actually outlaws or skofflaws, ignoring codes and evading local building authorities.

Aside from energy codes, these contractors are making electrical and gas connections as well as installing flues to hopefully rid houses of poisonous combustion gasses. These three things are all able to kill people and deserve to have another set of eyes on them. Deaths from carbon monoxide are not a rare occurrence.  

While I am on the job inspecting and testing HVAC systems I look at the insulation installation. Generally, attics are poorly insulated and general & roofing contractors do not use radiant barriers. When this bad combo exists in the attic, homeowners buy air conditioning systems, (even in the foggy Bay Area). We in the energy efficiency industry should be helping building owners install these systems so as not to need compressor cooling and the energy it takes in late in the afternoon at peak load.

Attic hatches are not sealed or insulated in most Bay Area houses. In about the last 90 attics I’ve climbed into, I’ve found 3 that actually have attic hatches that are air sealed and insulated. Insulation contractors just don’t do this. I suspect that since there is no HERS attic hatch inspection no one else cares. In my experience, City building inspectors pass any insulation installation no matter how poorly installed or how many gaps there are around boxes or can lights. Q: When is an R-39 attic actually an R-33.85 attic? A: When the attic hatch is unsealed and uninsulated.

Here is what I’d like to see,

·         Get the majority of HVAC contractors to have their work inspected and HERS tested.

·         Make contractors responsible for 4.507.2, sizing HVAC systems before they build them.

·         Have insulation installations inspected and enforce proper installation.

·         Have attic hatches inspected for air sealing and insulation.

·         Require HVAC contractors get continuing education in the energy code.

I know this is a lot to ask but I request that you coordinate and work with other state agencies like the CSLB and organizations of local building officials to actually enforce the California building energy code. If there is anything I can do to make this a reality, please let me know.

Please do not hesitate to contact me with any questions. My goal is to build a post carbon California Economy.

George Matthews
Building Energy Compliance Testing
Walnut Creek, CA
www.bect.us

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George Matthews
HERS I & II, BPI-BA Single & Multifamily
Green Point Rater for New, Existing & MF
Building Energy Compliance Testing
PO Box 4633, Walnut Creek, CA 94597
www.bect.us  510 520 4443