Stop the 2 A.M. Emergency Callout
A clogged filter or slipping fan belt turns into a costly emergency call and an angry client. MaxLinc watches compressor current, differential pressure and supply temps 24/7, firing instant SMS, voice and email alerts the moment a unit drifts out of range. Non-invasive retrofit, no monthly subscription.
Protect My UptimeBLOCK Temp + Current
Datalogger & Alarm
- Made in Canada 🍁
- No subscription on WiFi - free forever
- NIST-calibrated options
- 1-year warranty
- Free shipping over $100
Gear Up
Rugged, no-subscription monitoring for every serviced HVAC zone and property.
BLOCK Temp + Current
Monitors: AC Current & Temp
- • Predictive Chiller Maintenance
- • Fan Belt Slip Detection
- • Rooftop Unit Amperage
- • Split-core CT clamp (non-invasive)
- • 0-30A current range
- • Ambient temperature sensor
- • No Monthly Subscription fee*
BLOCK Fluid Pressure
Monitors: Fluid Pressure & Temp
- • Condenser Water Piping
- • Chilled Water Loops
- • Pump Overload Prevention
- • 0-10 bar (0-145 psi) pressure range
- • Fluid temperature sensor
- • Alarm on pressure drop
- • No Monthly Subscription fee*
BLOCK Differential Pressure
Monitors: Air Pressure Difference
- • Filter Drop Monitoring
- • Cleanroom Pressure
- • Duct Flow Tracking
- • -500 to +500 Pa range
- • Filter clogging detection
- • Room pressurization alerts
- • No Monthly Subscription fee*
BLOCK Pulse Counter
Monitors: Dry Contact & Pulse
- • Flow Meter Pulses
- • Machine Cycle Counts
- • Utility Metering
- • Dry-contact pulse input
- • Cumulative counter
- • Rate-of-change alerts
- • No Monthly Subscription fee*
Modbus Gateway
Monitors: RS485 Modbus RTU
- • BMS Integration
- • VFD Monitoring
- • Generator Status
- • RS485 Modbus RTU bridge
- • Up to 32 registers
- • Cloud-to-Modbus mapping
- • No Monthly Subscription fee*
BLOCK 4-20 mA
Monitors: Analog Signal
- • Tank Level Sensors
- • Custom Flow Meters
- • Industrial Probes
- • 4-20mA analog input
- • Universal sensor bridging
- • Scaled engineering units
- • No Monthly Subscription fee*
EDGE Thermo
Monitors: Ultra-low Temp
- • Glycol Lines
- • Deep Chillers
- • Extreme Environments
- • 2 external probe inputs
- • Long battery life 4X AA
- • Sensors extendable to 15m (50 ft)
- • No Monthly Subscription fee with free plan*
Predictive Maintenance.
Stop Catastrophic Failures.
Facility managers are exhausted by sudden breakdowns. The system utilizes CT clamps and pressure sensors combined with baseline algorithms to detect gradual drifting--alerting maintenance that a fan belt or compressor is failing weeks before the system actually dies.
Reactive
Fix it when it breaks. High cost, high downtime, catastrophic failures.
Preventive
Fix it on a schedule. Wasted parts, unnecessary labor, but fewer surprises.
Predictive
Fix it right before it breaks. Lowest cost, zero unplanned downtime.
Current Drift Detection
Predict motor wear via amperage creep.
Differential Pressure
Automate filter replacement schedules.
Non-Invasive Install
Clamps install without electrical shutdowns.
The Equipment Health Indicator
Instead of drowning in raw data points, our platform aggregates telemetry--like electrical current drift, temperature anomalies, and pressure drops--into a single 0-100% Health Score.
- ✓Machine Learning Baseline: The system learns normal operating behavior over 7 days.
- ✓Anomaly Weighting: Slight deviations lower the score gradually, while severe spikes drop it instantly.
- ✓Proactive Dispatch: When health drops below 50%, an automated work order is generated.
MaxLinc Vista:
Digital Twin Technology
Elevate your building management with immersive Digital Twins. Map your entire HVAC infrastructure into an interactive 3D space, allowing operators to monitor live telemetry, identify alarm origins instantly, and navigate through facility floors remotely.
- Spatial Awareness & Real-Time Data Overlay
- Rapid Fault Isolation in Complex Facilities
- Enhanced Training for New Maintenance Staff
Deployment Zones
Air Handler Units
Monitor static pressure and blower motor current
Chiller Plants
Continuous compressor load and return liquid tracking
Server Rooms
Critical ambient conditions and differential pressure
Exhaust Fans
Ensure safe air changes and track fan belt health
Frequently Asked Questions
How does monitoring catch HVAC failures before they cause downtime?+
MaxLinc sensors continuously log readings like compressor current, differential pressure across filters and coils, and supply/return temperatures. When a value drifts past a threshold you set, the cloud sends a real-time alert by SMS, voice call, push or email so a technician can act on a clogging filter or a slipping fan belt before it becomes an emergency service call.
Can I install these sensors without shutting down the equipment or cutting into pipes?+
Yes. Current monitoring uses a split-core CT clamp that snaps around an existing conductor with no rewiring, and differential-pressure sensors tap standard duct or filter-housing ports. Most zones can be instrumented without taking the unit offline, which makes them practical to retrofit across an existing portfolio of rooftop units, AHUs and chillers.
What temperature range do the probes cover for chilled-water loops and air handlers?+
The thermistor probes read the full HVAC working range, from chilled-water and refrigeration temperatures well below 0 C (32 F) up to hot supply air and condenser readings. Values are shown in both Celsius and Fahrenheit, and you set independent high and low alarm points for each sensor.
Is there a monthly subscription or per-sensor cloud fee?+
No mandatory hardware subscription. The BLOCK and EDGE devices on this page connect over WiFi and report to the MaxLinc cloud, where dashboards, logging, and multi-channel alerts are included. Advanced reporting is available at no extra charge, so cost stays predictable as you scale across more properties.
How fast will I know when a unit goes out of range?+
Data is logged continuously, and alerting is real-time: the moment a reading crosses your threshold, the alarm fires through your chosen channels, including an automated voice call for critical events like a chiller fault or a server-room over-temperature, so the right person is reached even after hours.
Automate Your Preventative Maintenance
Join hundreds of building operators who have eliminated catastrophic equipment failures with MaxLinc.
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