QII — Quality Insulation Installation in California: What It Is and When You Need It
QII is a pre-drywall inspection required on many new California homes. Learn what the rater checks, when it's required, and why missing the timing window is the most costly ECC mistake a builder can make.
How to Read a CF-1R: A Guide for HVAC Contractors and Builders
The CF-1R tells you exactly which ECC measures are required for your project — but most contractors never read it. Learn what each section means and how to use it before you call an ECC rater.
ECC Ratings for Existing Homes in California: When You Need One and Why
Homeowners sometimes need an ECC rating for utility rebates, PACE financing, energy-efficient mortgages, or real estate transactions. Here's when you need one, what it involves, and what a HERS Index score means.
Altered System ECC Inspections in California: What Gets Tested Under 2025 Title 24
When you replace an HVAC system or alter ductwork in California, an ECC inspection is required before the permit closes. Learn what tests apply, how each one works, and how to prepare your job site.
New Construction ECC Ratings in California: A Builder's Complete Guide
Every new California home needs an ECC rating before the permit closes. This guide covers all 7 required measures, the two-phase inspection process, common delays, and how to schedule your rater.
California's HERS Ratings Are Now Called ECC — What Changed in 2026?
California officially renamed the HERS (Home Energy Rating System) to ECC (Energy Code Compliance) in 2026. Here's what HVAC contractors, builders, and homeowners need to know about the change — and what stayed exactly the same.
Refrigerants Banned in New HVAC Systems — What California Contractors Need to Know
R-22 has been phased out for years, but 2025 brought new bans on R-410A and other widely used refrigerants. Here's what every HVAC contractor needs to know to stay compliant.
Why a HERS / ECC Inspection Is More Important Than You Think
Many contractors treat HERS inspections as a box to check. But a thorough ECC inspection protects your license, your client, and your business reputation.
What Is a Blower Door Test? A Complete Guide for California Homeowners and Contractors
A blower door test measures how airtight your home is and is required by California Title 24 for new construction. Learn how it works, what the ACH50 result means, and what to do if you don't pass.
What Triggers a California ECC (HERS) Inspection? An HVAC Contractor's Complete Guide
Not every HVAC job requires an ECC inspection. Learn exactly which projects trigger Title 24 field verification — equipment replacements, new ductwork, new construction, and more — for the Sacramento region.