Commercial HVAC maintenance follows a different rhythm than residential. Where residential systems get twice-yearly tune-ups, commercial installations typically follow quarterly inspection schedules aligned with seasonal transitions: spring pre-cooling readiness, mid-summer performance verification, fall pre-heating readiness, and winter combustion safety verification. Filter replacement schedules run every 30–90 days depending on facility type and filtration specification. Coil cleaning happens annually or semi-annually depending on outdoor unit exposure. Belt inspection and adjustment on belt-drive equipment happens quarterly. Refrigerant charge verification and combustion analyzer readings happen at minimum twice yearly on gas equipment. Documentation for property manager reporting happens after every visit. This page walks through the specific quarterly maintenance protocol we follow, filter replacement schedules by facility type, coil cleaning approach for rooftop unit installations, combustion safety verification on commercial gas equipment, and property manager reporting standards.
Preparation for summer cooling load before it arrives. Scope covers all cooling components after winter dormancy: refrigerant charge measurement and adjustment via subcooling/superheat, condenser coil cleaning to remove winter debris (leaves, dust, weather-driven particulates), condenser fan motor operation verification, evaporator coil inspection and cleaning where accessible, condensate drain clearing and float switch verification, blower motor amperage measurement, belt condition inspection and tension adjustment on belt-drive equipment, capacitor microfarad verification on start and run capacitors, contactor condition inspection, electrical connection torque verification, and thermostat calibration verification.
Verification that cooling equipment is meeting load during peak summer demand. Scope focuses on measurement and diagnostic: supply air temperature and static pressure measurement during peak load conditions, actual refrigerant charge verification under peak load, condenser coil cleaning if accumulation observed, filter condition inspection and replacement if approaching restriction, blower motor amperage under load, and control system operation verification. Any capacity deficiency identified during peak load conditions gets diagnosed and remediated before deeper summer proceeds.
Preparation for winter heating load. Scope covers heating equipment condition and safety: heat exchanger visual inspection where accessible, combustion analyzer readings (CO air-free, stack temperature, O2 percentage, combustion efficiency), gas piping pressure verification, gas valve and manifold pressure adjustment, ignition system verification (hot surface igniter resistance, direct spark electrode gap and condition), flame sensor microamperage measurement, blower motor operation in heating mode, high-limit switch operation verification, rollout switch operation verification (gas equipment), pressure switch operation verification (condensing furnaces), and thermostat heating mode operation.
Mid-winter verification that combustion equipment is operating safely under actual cold-weather load conditions. Scope focuses on combustion safety: combustion analyzer readings under actual outdoor design conditions, CO detector functionality verification, gas leak inspection at connections, venting inspection for corrosion or condensation issues, heat exchanger inspection where accessible with visual documentation, and safety limit switch functional verification.
MERV 8 to MERV 11 standard 1–2 inch filters replaced quarterly (every 90 days) on typical retail and small office installations. Higher-MERV filtration (MERV 13+) replaced every 60 days due to accelerated loading. During PCAPS inversion season (November–February), filter loading accelerates — monthly replacement recommended on higher-MERV installations.
Grease-loaded air near kitchen operations produces accelerated filter loading. MERV 8 to MERV 13 filters typically replaced every 30–60 days on restaurant installations. Grease filter maintenance on kitchen exhaust hoods coordinated with HVAC filter service.
MERV 13+ filtration standard on all medical office installations with monthly to bi-monthly replacement depending on facility activity level. HEPA supplementation on procedure rooms and immunocompromised patient areas follows manufacturer replacement schedule (typically annual on true HEPA final stage).
Warehouse and industrial filter schedules depend on facility process characteristics: standard warehouse and office spaces follow quarterly replacement; woodworking, machining, and process-generating dust require accelerated replacement (30–60 days typical); climate-controlled storage areas follow standard 60–90 day replacement.
Multi-family common area filtration typically follows quarterly replacement schedule. Individual PTAC unit filter replacement typically managed by tenants but coordinated through maintenance program on some property management arrangements.
Outdoor condenser coils accumulate debris (leaves, dust, cottonwood fluff, mineral scale from irrigation overspray) that reduces heat rejection efficiency. Cleaning approach: mechanical debris removal (careful brushing or vacuum extraction), coil cleaner application (foam or spray-on chemical cleaner appropriate for coil metal), water rinse from inside-out to push debris outward through fins, straightening of bent fins where accessible, and drainage verification. Annual condenser coil cleaning standard on Bluffdale-area rooftop installations; semi-annual recommended for restaurant installations near kitchen exhaust and installations near unimproved landscaping.
Indoor evaporator coils accumulate dust, biological growth (mold, bacteria in condensate area), and mineral scale over time. Cleaning approach: coil access via panel removal, coil cleaner application (foam or spray-on chemical cleaner), extended dwell time for chemical action, water rinse to drain pan, biocide treatment where biological growth present, and drain line clearing. Annual evaporator coil cleaning standard; semi-annual recommended for medical office installations and restaurant installations.
Bent condenser coil fins reduce airflow through the coil, reducing heat rejection capacity. Fin straightening with coil comb tool restores original fin spacing where damage is not too severe. Extensively bent fin areas may require coil replacement rather than field straightening.
Bacharach InsightPlus or equivalent commercial combustion analyzer readings quarterly on gas-fired commercial equipment: CO air-free (should be below 100 ppm for standard commercial equipment; below 400 ppm during cold-start transient; investigate any reading above 100 ppm at steady-state), stack temperature (equipment-specific but typical 300–500°F on standard equipment, 150–250°F on condensing equipment), O2 percentage (typical 6–9% at steady-state, higher CO likely if O2 falls below 4% or exceeds 10%), and combustion efficiency (85–92% typical on standard 80% AFUE equipment, 93–96%+ on condensing equipment).
Manifold gas pressure verification with digital manometer against manufacturer specification. Delivered pressure at gas equipment inlet verified against Dominion Energy service pressure specification (7″ WC nominal, 14″ WC max). Excessive pressure drop indicates gas piping restriction requiring investigation.
Heat exchanger visual inspection where accessible via combustion chamber access panels. Photo documentation of heat exchanger condition on commercial equipment supports property manager reporting and preventive replacement planning. Functional testing observes flame behavior with blower operation — flame disturbance during blower cycling indicates potential integrity issues requiring closer investigation.
Commercial installations with CO detectors get functionality verification quarterly: detector alarm testing per manufacturer specification, battery replacement on battery-powered detectors, and calibration verification on advanced detectors with digital readouts. Detector placement verification for effective coverage.
Every commercial maintenance visit produces comprehensive documentation: equipment identified by unit number and location, work performed with itemized inspection scope, measurements recorded (refrigerant charge, combustion analyzer readings, static pressure, blower amperage, motor amperage), any concerns identified with specific recommendations, parts replaced with model/serial documentation, filter model and installation date, and technician sign-off with visit date and time.
Property manager reporting typically includes quarterly summary across all covered equipment: visit dates and completion status, aggregate equipment condition summary, priority recommendations for near-term maintenance or replacement decisions, upcoming service scheduled for next quarter, and budget planning input for major maintenance or replacement projects anticipated in the next 12–24 months.
Annual comprehensive report includes: complete equipment inventory with age and warranty status, aggregate condition assessment across the portfolio, energy consumption trending where sub-metering available, upcoming replacement recommendations for equipment approaching end of service life, and multi-year capital planning input for property manager budget development.
Emergency service events (no-heat, no-cool, safety-related dispatches) produce specific event documentation: dispatch time, response time, diagnostic findings, repair work performed, parts and labor breakdown, and follow-up recommendations. Property manager notification via email at dispatch and completion per specific property management arrangement.
Service contracts bundle quarterly maintenance visits at discounted per-visit pricing plus additional benefits (priority dispatch, 15% parts discount, dispatch fee waivers, dedicated account manager). Contract pricing depends on: number of covered units, facility type and access considerations, response time guarantees required, and specific inclusion/exclusion of parts and repair labor. Contact office for site assessment and custom quote. Detailed contract terms on the service contracts page.
Commercial HVAC maintenance quotes, quarterly inspection scheduling coordination, restaurant refrigeration service integration, medical office IAQ verification, warehouse and light industrial preventive maintenance, multi-family common area HVAC service, and property manager reporting all route through the office at 14659 S 855 W. Whether you’re coordinating quarterly maintenance on a 4-unit Trane Precedent RTU installation at a Bluffdale strip mall, scheduling refrigeration and HVAC service for a full-service restaurant along Porter Rockwell Boulevard, or negotiating a comprehensive maintenance program across a multi-building industrial portfolio in the Salt Lake Valley, our commercial team handles the scheduling, service execution, and property manager reporting.