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.