2024 AHR HVAC Show: Testing, Mini-Splits, and Why Manual J is Pissing Me Off

OK, running thru line alert- it's been demonstrated to me that we're calculating way too much heating needed for certain homes, and I'm digging into that. There's a lot more going on at this year's AHR Expo though- from new mini-split designs that actually filter and won't need as much maintenance, to geothermal system diagnostics, to the tiniest heat pump I've ever seen.

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0:12 Ceiling fan shoutout
0:18 New test instruments from TPI and Kanomax
3:49 Brent Ridley wins bet on electric backup heat being dumb
5:01 AI-enabled zone damper system 75F
7:30 DC powered 1/10 ton mini-split heat pump, Masterflux by Tecumseh
8:46 Bill Spohn agrees electric backup heat is silly even in Pennsylvania
9:35 New mini-split design with MERV 14 filters and less mold potential, Sharp Electronics
11:28 Heat pump water heaters still don't know how much cooling they make
11:58 Kevin Demaster on Mitsubishi outperforming Manual J (WTF) and geothermal
14:19 Geothermal heat pumps and web-based diagnostics at WaterFurnace
16:11 Duct board PSA
16:45 Custom printed flex ducts, Prihoda North America
17:02 Automated drain pan disinfection solution, iFlo
19:44 TrueLoads new HVAC design software, and John Whitehead is a hoot
22:15 Alex Meaney, MeanHVAC, on why Manual J might be bending the math on heat load calcs