Learning Center / Maintenance
Learn · 7 min read
The Real HVAC Maintenance Checklist — What Actually Extends System Life
A "tune-up" from most contractors is 15 minutes of coil rinse and a filter check. That's not maintenance — that's cosmetic. Here's what a real HVAC service visit looks like, in the same order I run it in Creedmoor.
What is HVAC maintenance really?
Preventive maintenance is a scheduled check of every component subject to wear, so failures happen on our schedule (during a comfortable weather week, on a service call) rather than the system's (7 PM on the 4th of July).
The industry-standard version is codified as our 13-Point Maintenance & Inspection: filter, drive belts, drive sheaves, motor bearings, fan assemblies, starters/contactors/switches/fuses/wiring, dampers and actuators, compressor crankcase heaters, thermostat leveling, noise/vibration, motor voltage/amperage, outside air/economizer, and every operating safety control.
When do you do what?
Two visits per year is the minimum for the Triangle:
- Spring (March–May): cooling side. Refrigerant charge check, condenser coil clean, capacitor test, condensate line clear.
- Fall (September–November): heating side. Heat exchanger inspection (gas systems), flame sensor clean, blower current draw, safety switch cycle.
Homeowner tasks between visits: change the filter monthly during peak season, keep 2 feet clear around the outdoor unit, and run a cup of vinegar through the condensate line every 3 months.
How does maintenance fail?
Two common failures: (1) the "cleaning-only" tune-up that skips electrical testing entirely — the #1 in-season failure mode is capacitor drift, which you catch only with a multimeter, and (2) no documentation. If your contractor doesn't leave a written report with measured values (superheat, subcool, delta-T, static pressure, capacitor microfarads), you have no baseline for next year's visit.
Frequently asked questions
How often should HVAC be serviced?
Twice per year — once for cooling in spring and once for heating in fall. That's what our residential maintenance plan covers.
Is a maintenance plan worth it?
In the Triangle, yes. A $199/year plan pays back in one caught failure (a $220 capacitor before it kills a compressor is a $2,000+ save). Members also get 10% off any needed repairs.
Action