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Did you recently have a new HVAC installed?
So Cal HERS Raters provides duct testing service for
compliance and quality control.
If a licensed C-20 contractor tells you that you don't need a
permit, you don't need that contractor.
HVAC replacements in California Climate Zones 2 & 9 -16
require duct sealing with HERS verification when a component
of the HVAC is replaced. |
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