Once a building’s systems are installed and commissioned, keeping them running well becomes the real, long-term job. That is what a maintenance contract is for — and the two you’ll be offered, AMC and CAMC, differ in one decisive way: who pays for parts.

AMC — Annual Maintenance Contract

A standard AMC (sometimes called non-comprehensive) covers service: scheduled preventive visits, inspections, servicing and breakdown attendance by trained technicians. What it usually does not include is the cost of spare parts and major components — those are billed separately when needed.

An AMC suits newer equipment still under warranty, or assets where failures are infrequent and you’re comfortable absorbing occasional parts costs.

CAMC — Comprehensive Annual Maintenance Contract

A CAMC includes everything an AMC does and the cost of spare parts and components within the agreed scope. You pay a single, predictable fee, and the provider carries the risk of part failures.

A CAMC suits ageing equipment, business-critical systems where downtime is expensive, and owners who want budget certainty and a single throat to choke for uptime.

Weighing them up

  • Cost predictability. CAMC gives a fixed annual cost; AMC is lower upfront but variable when parts fail.
  • Risk. CAMC shifts parts-failure risk to the provider; AMC leaves it with you.
  • Asset age. Newer assets lean AMC; older or critical assets lean CAMC.
  • Incentives. Under CAMC, the provider is motivated to maintain proactively, because they bear the cost of breakdowns.

What a good contract includes — whichever you pick

  • A clear preventive maintenance schedule (PPM) per system, not just call-outs.
  • Defined response and resolution SLAs with escalation.
  • Reporting — visit records, readings, and a clear view of asset health.
  • Skilled, safety-compliant technicians and proper documentation.

The best maintenance is proactive, not reactive — it protects uptime, extends asset life and keeps you compliant. MVOLT offers both AMC and CAMC across electrical, HVAC, fire, security and IT systems under one contract. See how our AMC/CAMC works or ask for a maintenance plan.