BAS Technician II
Prairie Mechanical Services, Inc. · Des Moines, IA
Mar, 2021
Maintain and optimize 140+ commercial buildings (11.2M sq ft) on Tridium Niagara N4 and Johnson Controls Metasys, holding a 98.6% on-time PM completion rate across a 3-county service territory.
Rewrote sequences of operation for 46 air handlers and 9 chiller plants (optimal start/stop, static pressure and supply-air reset), delivering $268K in verified annual energy savings.
Led BACnet MS/TP-to-BACnet/IP migration of a 420-bed hospital campus — 2,900 points, 310 controllers — with zero unplanned downtime in surgical and isolation suites.
Cut nuisance alarms 72% (from ~1,150 to 320 per month) by rebuilding alarm classes, priorities, and delays across 38 Niagara stations.
Integrate Modbus RTU/TCP meters, VFDs, and boiler controllers into BAS front ends, adding sub-metering to 60+ sites for utility-rebate M&V reporting.
Mentor 3 junior technicians and authored a 40-page point-naming and graphics standard now used on all company retrofit bids.
HVAC Controls Technician
Heartland Building Controls · West Des Moines, IA
Jun, 2018 · Feb, 2021
Installed, terminated, and commissioned 1,800+ DDC controllers (Honeywell WEBs/Spyder, JCI FEC/VMA) on 65 new-construction and retrofit projects.
Programmed demand-controlled ventilation for 14 K-12 schools using CO2 sensing, reducing outside-air heating load 31% and saving $96K per year.
Performed point-to-point checkout and functional performance testing for 22 LEED projects, closing 100% of commissioning issues before owner turnover.
Built 250+ Niagara AX/N4 graphics and trend logs, giving facility teams real-time visibility into VAV, RTU, and hydronic performance.
HVAC Service Apprentice
Capital City Heating & Cooling · Des Moines, IA
May, 2016 · May, 2018
Completed 2,000+ hours of supervised service on rooftop units, split systems, boilers, and chillers up to 400 tons for commercial and light-industrial clients.
Performed refrigerant recovery, charging, and leak checks on 300+ units in full EPA 608 compliance with zero recordkeeping findings on audit.
Replaced 120+ thermostats, economizer actuators, and sensors, sparking the transition into controls and earning a sponsored DMACC tuition seat.