40%
Average energy reduction for HVAC clients
< 15 min
Alert response time for critical faults
8 areas
Service areas covered across greater NYC
30+ yrs
Mechanical and controls expertise
What's Included
Precision Control Across Every System.
Pneumatic-to-Digital Conversion
Replace aging pneumatic controls with modern Direct Digital Control — the single highest-ROI controls upgrade available to most commercial buildings.
Eliminates compressed air maintenance costs and gives you real-time setpoint control.
Variable Air Volume (VAV) Control
Zone-by-zone precision through VAV box control. Each zone gets exactly the airflow it needs — no more over-conditioning empty conference rooms.
Compatible with all major VAV manufacturers. Existing boxes, new controls.
Demand-Controlled Ventilation
CO₂-based fresh air delivery that responds to actual occupancy. Ventilate when people are present — not on a fixed schedule that ignores reality.
Reduces fan energy while maintaining ASHRAE 62.1 compliance. Pair with IAQ monitoring for full CO₂, PM2.5, and TVOC visibility.
Chiller & Boiler Sequencing
Optimize lead/lag scheduling across multiple chillers and boilers to cut runtime, reduce wear, and match plant capacity to actual load.
Staged startup, optimal loading, and automatic failover logic included.
BMS Integration
Connect your HVAC systems to your building management system for unified visibility and control — regardless of equipment brand or protocol.
BACnet, Modbus, and Niagara N4 integration supported.
Fault Detection & Diagnostics
Catch equipment issues before they become failures. Automated rules flag stuck dampers, runaway setpoints, and sensor drift in real time.
Alerts routed to your team or handled directly by MJI Energy monitoring.
Who It's For
Built for Everyone Responsible for Comfort and Cost.
Facility Managers
Stop fighting your HVAC
We commission systems that run themselves and alert you when attention is needed — so you're solving problems, not chasing symptoms.
Property Managers
Fewer complaints. Lower bills.
Reduce tenant comfort complaints and utility bills simultaneously — the two metrics your owners watch most closely.
Building Owners
HVAC is 40–60% of your energy spend.
That's a significant cost center. We turn it into a controllable variable — with data to prove the results to investors and lenders.
Often Paired With