Quick answer
- Buy defined tasks and intervals — not vague “tune-ups.”
- Separate preventive visits from repair labor and parts pricing.
- Require seasonal readiness for Central Valley heat and South Bay shoulder seasons.
When this applies
You are comparing vendor proposals
Two “quarterly maintenance” quotes can mean wildly different task depths. Use this to normalize scope before you pick a price.
You are moving from break-fix to planned care
After a painful summer outage, a contract should prevent the next one — not just create invoices.
Multi-site or multi-RTU portfolios
You need consistent checklists, reporting, and bilingual communication across San Jose and Central Valley sites.
How it works
Inventory assets and criticality
List each RTU, indoor unit, MUA, refrigeration rack/walk-in, and controls gateway. Tag which assets are customer-facing or IT-critical so visit frequency matches risk.
Define the visit checklist
Filters, belts, coils, drains, electrical tighten-ups, refrigerant sight/operating checks, economizer function, thermostat/BAS review, and safety controls. Spell out who supplies filters and whether coil cleaning is included or quoted.
Set reporting and response rules
Require digital reports with deficiencies and priorities. Define emergency vs. routine response windows and how repairs are approved — especially after hours.
Failure modes to avoid
Price-only contracts with empty checklists
A cheap visit that only changes a filter leaves compressors and economizers uninspected until failure.
Bundling unlimited repairs into “maintenance”
Unclear inclusions create disputes. Separate PM from repair T&M or capped repair riders.
Ignoring refrigeration and controls
HVAC-only PM on a restaurant or retail site misses walk-ins and BAS faults that drive the real downtime.
Proof & local context
- • Precision Heating & Cooling offers commercial maintenance for light-to-mid commercial HVAC and refrigeration with clear task lists and bilingual reporting.
- • CSLB #1056688 · Bryant-authorized · South Bay + Central Valley coverage.
- • Perfection Guaranteed — we would rather catch a failing capacitor in spring than explain a July outage.
Next step
Guidance reflects light-to-mid commercial HVAC, refrigeration, and server/edge cooling practice across San Jose / South Bay and Central Valley (Hanford, Clovis) jobs. Not for hospitals or hyperscale data centers. Confirm site conditions, Title 24 path, and manufacturer data before bidding.
FAQs
How often should commercial RTUs be maintained?
Many light commercial sites do quarterly visits; dusty, kitchen, or continuous-runtime assets may need more. Frequency should follow filter loading, runtime hours, and criticality — not a one-size brochure.
Are repairs included?
Usually not in basic PM. Prefer contracts that list PM tasks clearly and price repairs separately (or as a defined rider) so you can compare apples to apples.
Do you service both South Bay and Central Valley sites?
Yes — Precision Heating & Cooling serves San Jose / South Bay and Central Valley locations including Hanford and Clovis under coordinated commercial agreements.