Field Controls already moved. Southwire and Genesis go Friday. Outdoor GFCI still hits Sept 1 unless your state carved HVAC out.
1. Field Controls, Aug 15
What: Field Controls makes draft hoods, power venters, and other combustion and vent parts. Geary Pacific lists the increase as of Aug 15, 2026: combustion 5-20%, air treatment 1-14%, ventilation 1-20%. ACHR printed the date and skipped the percent.
So-what: A water heater vent or combustion part you quoted last week is already underpriced.
Now-what: Reprice the open combustion and vent quotes. Buy the parts you know you will use in the next month or two.
2. Southwire and Genesis, 1-2.5% on Aug 21
What: Geary lists Genesis Cable and Southwire at 1-2.5% as of Aug 21, 2026, which is Friday.
So-what: Wire on a job you hang this week still has a few days on the old sheet. It is a small number until you buy a lot of copper.
Now-what: If you already know the pull, buy it before Friday. Do not fill a trailer because the percent looks small.
3. Outdoor HVAC GFCI, two weeks out
What: A GFCI is the device that kills power when it thinks electricity is leaking to ground. Fine in a bathroom. On a new inverter condenser or heat pump, a regular GFCI often trips even when nothing is wrong. NEC 210.8(F) put those outdoor units on GFCI. NFPA gave HVAC a temporary pass. That pass ends Sept 1, 2026. HARDI said in July that about 40 states are on the 2020 or 2023 code. HVAC is carved out in AR, CT, GA, IA, LA, MD, NH, NM, NC, OH, OK, SC, SD, TX, UT, VA. TN, WI, DC, KS, and IN are still on 2017 or older, so this section is not in play yet. Everywhere else, a new outdoor AC or heat pump after Sept 1 may need GFCI. Ask for high-frequency GFCI or a Class C special-purpose GFCI listed to UL 943C. Those are the ones that usually hold.
So-what: Two weeks is enough to fail an inspection, or to get a trip-out callback, if you guess.
Now-what: Check which NEC edition your state is on. Then ask the counter if they have high-frequency GFCI, not the bathroom kind.