Field guides

Plain-English guides for controls pros

Written for techs, integrators, Cx agents and facility engineers who have to make this stuff work. No invented stats: every number links to its source.

Rooftop unit control board terminal strip with thermostat wiring landed on R, Y1, W1/O and G
Analytics & FDD · 8 min read

What is FDD, and is it worth it for a mid-size building?

Fault detection and diagnostics in plain English: what it catches, what the best public data says it costs and saves, and when it isn't worth it.

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Commercial rooftop HVAC units silhouetted against a city skyline at dusk
Energy Optimization · 9 min read

AI in building automation: what's real vs. hype in 2026

Every BAS vendor says "AI" now. Here's how to sort what's shipping into five buckets, and the red flags that should make you slow down.

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Empty building operations workstation at night with trend charts and a floor plan on screen
Analytics & FDD · 6 min read

Buyer's checklist: building analytics and FDD platforms

40 questions to ask before you sign. Data access, tagging, workflow, cost model, security and exit terms, printable.

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Close-up of a building automation control panel with terminal blocks and labeled control wiring
IoT & Integration · 10 min read

BACnet and integration basics for evaluating building software

The 15 minutes of BACnet you need before buying analytics or a new BAS: objects, BBMDs, MS/TP, COV vs. polling, BTL listing and BACnet/SC.

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Open ceiling with spiral ductwork, a VAV box and its control enclosure
Commissioning · 7 min read

Commissioning software compared: CxAlloy vs. Facility Grid vs. Bluerithm

Three Cx platforms side by side, based on what each vendor says publicly, plus what to test in a trial before your team commits.

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Glass office tower facade at blue hour with lit floors
Smart-Building Platforms · 6 min read

AHR Expo 2027: questions to ask building automation vendors

Chicago, Jan. 25–27, 2027. A printable cheat sheet of questions by category so you leave the booth with answers, not just a tote bag.

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