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Cole Brennan

Residential HVAC Technician
Dallas, TX, United States

Professional Summary

EPA 608–certified Residential HVAC Technician with 8+ years installing, diagnosing, and repairing heat pumps, gas furnaces, and ductless systems across the Dallas–Fort Worth metro. Known for first-visit fixes under Texas peak-load conditions, clean changeouts, and clear homeowner walkthroughs that keep callbacks low. Comfortable with refrigerant recovery/weigh-in, electrical troubleshooting, and mentoring apprentices on service routes.

Employment History

Residential HVAC Technician
North Texas Climate Pros · Dallas, TX
Apr, 2021 · Present
• Run 5–8 residential service and install calls per day across Dallas, Plano, and Irving; hold ~91% same-day diagnostic close on no-cool / no-heat tickets during summer and winter peaks. • Lead 2–5 ton heat-pump and gas-furnace changeouts including line-set, condensate, pad, disconnect, and thermostat commissioning; average punch-list closure within one follow-up visit. • Diagnose sealed-system failures with manifold gauges, micron gauges, and recovery machines; recover and recharge R-410A/R-32 systems to manufacturer weigh-in specs with documented tickets. • Mentor two junior techs on contactor/capacitor/board troubleshooting and customer communication; cut apprentice-assisted callback rate ~16% over two seasons. • Convert ~28% of high-age-equipment service visits into planned replacements using Manual J notes and static-pressure checks without overselling homeowners.
HVAC Service Technician
Metroplex Air Systems · Garland, TX
Jun, 2018 · Mar, 2021
• Serviced residential split systems, package units, and ductless mini-splits for a ~1,000-home maintenance-plan book; hit 95%+ on-time arrival on scheduled PM routes. • Completed seasonal tune-ups (coils, filters, condensate, amp draws, temperature splits) that reduced mid-summer emergency callbacks for plan customers on assigned routes. • Replaced failed capacitors, contactors, blower motors, igniters, and condensate pumps; kept van stock organized so first-visit parts availability stayed above 85%. • Documented every ticket in the company CRM with photos, readings, and plain-language summaries; consistently scored high on CSAT for repair-vs-replace clarity. • Supported after-hours on-call rotation (~1 week/month); stabilized no-heat and no-cool emergencies for priority residential accounts across eastern DFW.
HVAC Apprentice
Dallas Trade Apprenticeship Program · Dallas, TX
Aug, 2015 · May, 2018
• Assisted lead installers on residential changeouts: recovered refrigerant, pulled vacuum to ≤500 microns, brazed under supervision, and set outdoor pads and disconnects. • Learned gas furnace start-up, draft verification, and carbon monoxide safety checks; earned EPA 608 Type I & II while apprenticing. • Staged tools and leftover materials per job; reduced leftover-fitting returns by tracking line-set lengths and fittings against van inventory. • Progressed from helper to independent PM tech within the apprenticeship; completed OSHA 10 and core electrical/airflow modules. • Supported warehouse pulls and van restock for three trucks covering Dallas and southern Collin County routes.

Education

HVAC Technology Certificate
El Centro College (Dallas College) · Dallas, TX
2015
High School Diploma
Sunset High School · Dallas, TX
2013

Skills

HVAC
Refrigerant
Electrical
Excellent Customer Service Skills
Interpersonal Communication Skills

Courses

EPA Section 608 Universal (Type I, II, III)
EPA / HVAC Industry · Dallas, TX
NATE Core / Ready-to-Work (modules in progress)
NATE · Dallas, TX
OSHA 10 Construction
OSHA · Dallas, TX
Texas ACR helper/tech experience under licensed contractor
Texas licensed contractor · Dallas, TX