Can LoopString monitor and control HVAC equipment?

Yes. It reads supply/return temperature, humidity, and differential pressure and can drive fan, damper, and stage relays from the Pi on setpoints or schedules. It complements building controls rather than replacing safety interlocks.

Can it alert me to a failing unit before occupants complain?

Yes. Threshold alerts catch a drifting space temperature or a clogged filter’s pressure rise, and a device-offline alert flags a unit that stops responding — all on the channels you choose.

Can I monitor several units or sites from one place?

Yes. A fleet view rolls up multiple units and locations, each with its own limits, and every site’s control keeps running locally on its own Pi.

Commercial HVAC Automation

Deploy per-zone sensors and manage all your climate zones from one dashboard — with automated alerts when any zone drifts out of spec.

The Problem

Multi-zone climate inconsistency

Without per-zone sensors, hot and cold spots go undetected until occupants complain or equipment fails.

Reactive maintenance only

HVAC teams respond to failures after the fact because there is no continuous monitoring of duct pressure or air quality.

Energy waste from over-conditioning

Zones running full blast when occupancy is low burns energy and increases wear on equipment.

No data for commissioning or audits

Proving that a zone met temperature SLAs for a compliance audit requires historical sensor data that often does not exist.

How LoopString Solves It

Room-level sensor grids

Deploy an SHT31 in every zone. LoopString aggregates all readings into a single centralized dashboard.

Centralized multi-zone dashboard

See temperature, humidity, and air quality for every zone side-by-side and drill into any room for a detailed view.

Duct pressure & air quality monitoring

Track static duct pressure and CO₂ / VOC levels to catch filter blockages and poor ventilation before they become problems.

SLA breach alerts

Configure temperature and humidity thresholds per zone. Alerts fire immediately when any zone drifts out of spec.

Hardware You'll Use

SHT31

Per-zone temperature and humidity sensor

I²C

Duct pressure sensor

Differential pressure transducer for static duct pressure

Analog / 4-20 mA

MH-Z19 / CO₂ sensor

Air quality and ventilation monitoring

UART

VOC sensor

TVOC and air quality index for occupied spaces

I²C

Free tools for this work

Wet Bulb Calculator

Wet-bulb temperature and evaporative-cooling potential for sizing and scheduling.

Dew Point Calculator

Dew-point spread to prevent condensation on ducts, coils, and cold surfaces.

Frequently asked questions

Can LoopString monitor and control HVAC equipment?: Yes. It reads supply/return temperature, humidity, and differential pressure and can drive fan, damper, and stage relays from the Pi on setpoints or schedules. It complements building controls rather than replacing safety interlocks.
Can it alert me to a failing unit before occupants complain?: Yes. Threshold alerts catch a drifting space temperature or a clogged filter’s pressure rise, and a device-offline alert flags a unit that stops responding — all on the channels you choose.
Can I monitor several units or sites from one place?: Yes. A fleet view rolls up multiple units and locations, each with its own limits, and every site’s control keeps running locally on its own Pi.

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