The best $20 in BAS? A USB-to-RS-485 adapter. Tap MS/TP & Modbus, see the token, catch the culprit, and prove the fix, fast.

A field-tested freeze protection guide for BAS: what to check, how to test AHUs, hydronic loops, and snowmelt, so you prevent cracked coils and costly calls.

“Auto” lies when something upstream has control. Find hidden overrides, VFD Local, bypass, safeties, priority arrays, and fix RS-485 noise that mimics overrides.

Zone temps lie for predictable reasons. Use this 15-minute truth test and fix order to prove what’s real and stop callbacks.

Filters, strainers, and bent fins are silent efficiency killers. Here’s how they lie to your BAS and how to stop them.

Your economizer is lying to you this month. Here’s the 30-minute autumn tune-up to fix sensors, mechanics, and logic, before heating season burns your budget.

Bad BAS graphics cost time, money, and trust. Use this operator-first design playbook to simplify screens, speed troubleshooting, and cut call volume.

The most dangerous number in your BAS is the one that looks normal. Learn how default setpoints and sensor fallbacks hide in plain sight and how to catch them fast.

if your system is firing off an alert every five minutes, your first instinct is to mute it, not fix it. That’s not just annoying, that’s dangerous.