Twice a year is the minimum for most commercial buildings — spring and fall, ahead of peak cooling and heating demand. Many properties need quarterly service, and some need monthly filter changes regardless of how often full service happens.

Why Commercial Runs on a Tighter Schedule

A residential system runs when a family is home and comfortable. A commercial system runs during all operating hours, often at higher air change rates, serving spaces with far more people, equipment, and heat load in them.

That compresses the wear timeline. Filters that last three months in a house last three weeks in a restaurant or a gym. Belts, bearings, and contactors accumulate cycles at a rate residential equipment never approaches.

Rooftop units add their own factor: they sit fully exposed to Hill Country sun, wind, dust, and hail with nothing protecting them. Cabinet corrosion, damaged panels, and clogged coils are routine findings.

What Determines Your Interval

We set frequency by building type rather than by a default:

  • Restaurants and commercial kitchens. Grease-laden air is brutal on equipment. Frequent filter service and coil cleaning are non-negotiable, and exhaust and make-up air balance needs regular attention.
  • Medical and dental. Ventilation and filtration requirements are stricter, and documentation often matters for compliance.
  • Retail and office. Standard biannual service is usually adequate, with quarterly filter changes.
  • Hotels and lodging. High occupancy variability and guest comfort expectations push toward quarterly.
  • Wineries, tasting rooms, and event venues. Highly variable occupancy loads and humidity control requirements need a schedule built around the actual event calendar.

What a Commercial Visit Covers

Beyond the residential checklist, commercial service includes belt tension and condition, bearing lubrication, economizer operation and damper function, contactor and relay inspection, refrigerant charge verification across multiple circuits, control and thermostat programming, and airflow balance across zones.

Economizers deserve specific mention because they are so frequently broken and so rarely noticed. An economizer brings in outside air when conditions are favorable, cutting compressor runtime substantially. A stuck economizer either wastes that opportunity entirely or, worse, pulls in hot outside air during peak cooling — quietly running up the bill with no symptom the tenant would report.

The Cost Case

For a business, downtime is the real expense.

A restaurant that loses cooling on a Friday night in July does not lose the price of a repair. It loses the service, the food, the labor, and a stack of reviews. An office with no air conditioning sends people home. A hotel comps rooms.

Scheduled service converts unpredictable failures into planned visits at times you choose — before opening, after closing, or on a slow day. That control is worth more than the maintenance costs.

Energy is the second argument. Commercial HVAC is typically the largest line on a building’s utility bill, and dirty coils, low charge, and broken economizers can add a substantial percentage to it without producing any noticeable symptom.

Documentation and Compliance

Commercial maintenance produces records, and records matter. Warranty claims on commercial equipment routinely require proof of service. Insurance carriers ask after a loss. Leases often assign maintenance responsibility to one party, and documentation settles disputes about whether it was met.

Every visit under our commercial agreements generates a written report with findings and recommendations, which also lets you budget for capital replacement before a unit strands you.

Bundling With Plumbing

Most of our commercial clients put both trades on one agreement. Because we also provide commercial plumbing, your rooftop units, ductwork, and plumbing system sit on a single schedule with one point of contact.

That also closes the gap where shared systems live — condensate drains, gas supply, and make-up water — which tend to be nobody’s responsibility when two vendors split the building.

Setting Up a Schedule

We walk the property, inventory the equipment, look at your operating hours and occupancy patterns, and propose an interval that fits. Filtration and indoor air quality requirements are part of that conversation.

We serve commercial properties throughout Fredericksburg, Kerrville, Boerne, Comfort, and the Hill Country. Learn more about our commercial HVAC services, contact 72 Degrees, or call (830) 240-1835.