What is included in a commercial HVAC maintenance contract?

Answered by the Nextech team · October 10, 2026

What’s commonly included (and what varies) in a commercial HVAC maintenance contract

In the industry, most commercial HVAC maintenance contracts are built around repeatable PM visits for each piece of equipment on an agreed asset list (for example: rooftop units, split systems, make-up air units, exhaust fans, controls). The contract typically also defines the administrative pieces that make PM usable in real life—how visits are scheduled, how findings are documented, and how recommended repairs are quoted and approved.

What varies by provider and by site is the exact checklist, which readings are captured, whether consumables are included, and whether the agreement includes any repair coverage (or only preventive work). The most reliable way to compare contracts is to review the PM checklist by equipment type and read the “included vs. excluded” language line by line.

Typical contract inclusions checklist (what to look for in writing)

• PM visit scope (per unit): visual inspection; basic cleaning as needed; verify safeties and sequence of operation; check airflow-related items (filter condition/fit, blower condition); inspect heat-transfer surfaces (evaporator/condenser coil condition) and clean when warranted; check condensate pan/drain; inspect electrical components (connections, contactors/relays) and note abnormal wear.
• Measured readings & reporting: a written report with “actual numbers,” not only pass/fail. Examples that are often recorded (as applicable) include supply/return temperature split, compressor and fan amp draw, static pressure, suction/discharge pressures on systems where those readings are appropriate, and economizer damper operation/position and basic functional checks.
• Deficiency tracking: documented issues with priority (urgent vs. plan/budget), photos when helpful, and clear recommendations for corrective work.
• Scheduling/dispatch terms: planned visit cadence (months or seasons), how missed visits are handled, business-hours vs. after-hours definitions, and how service calls are triaged (for example, emergency vs. next-business-day).
• Exclusions & limits: what is not included unless stated (common examples: major repairs, replacement parts, refrigerant, code upgrades, and pre-existing deficiencies).

Variables to confirm before you sign (common “surprise” items)

• Filters: included or customer-supplied; filter sizes and change frequency; whether high-MERV filters require airflow/static-pressure verification.
• Belts and other consumables: included, excluded, or billed separately (and whether spares are kept on-site).
• Refrigerant: included, capped, or excluded; how leak checks/repairs are authorized; whether recovery/handling is billed separately.
• After-hours/holiday work: what counts as after-hours, how overtime rates apply, and whether the contract changes dispatch priority without promising a guaranteed response time.
• Repair labor/parts pricing: whether repairs are time-and-materials, quoted, or discounted under the agreement (and what’s excluded).
• Asset list accuracy: confirm model/serial, tonnage/capacity, filter sizes, access constraints, and which equipment is actually covered (missing or incorrect assets are a common cause of gaps).

How frequency is usually set (typical ranges, not a universal rule)

Maintenance frequency is commonly based on equipment type, runtime, occupancy, and the consequences of downtime. Typical planning ranges in commercial settings often look like this:

• Rooftop units (RTUs): commonly 2–4 visits per year (often spring and fall at minimum; more when units run hard or serve critical spaces).
• High-load or high-grease environments (many kitchens, some production areas): often more frequent than standard office space because coils, filters, and drains can load up faster.
• Critical comfort/process areas (server rooms, medical, mission-critical zones): commonly quarterly or better, with tighter documentation and faster escalation paths.

Whatever cadence you choose, the contract should match the checklist to the seasonality of your equipment (cooling-heavy vs. heating-heavy) and specify what happens if a visit is delayed or a unit is inaccessible.

Next step: Las Vegas Commercial HVAC & Refrigeration