AMC pricing — fixed, comprehensive, or pay-per-call? How do the models actually compare?
Getting maintenance contract (AMC) quotes and the pricing models are all different — some fixed-fee, some "comprehensive" (parts included), some basically pay-per-visit.
- What's the real difference between the common AMC pricing models?
- What's included/excluded in each?
- How do I compare them fairly?
This is the pricing side of what an AMC should cover and choosing one vendor vs several. Trying not to pick on headline price and get stung on exclusions. How do they compare?
3 answers
Short answer: there are three common AMC pricing shapes and they trade PREDICTABILITY against PRICE. (1) Non-comprehensive / labour-only (fixed fee): covers scheduled visits + labour, but PARTS are billed on top — cheapest headline, least predictable. (2) Comprehensive: fixed fee that includes parts/replacements within scope — costs more but caps your risk, since a big failure is "included" rather than a surprise invoice. (3) Pay-per-call / on-demand: no retainer, you pay per visit — fine for low-criticality kit, but no planned upkeep and premium rates when it breaks. The right one isn't the cheapest sticker; it's the one whose INCLUSIONS/EXCLUSIONS match how critical the equipment is and how much bill-shock you can tolerate.
The models, plainly: - Non-comprehensive (labour-only), fixed fee: you pay a set fee for the scheduled PPM visits + labour; parts, major components and consumables are extra. Lower headline, but a big part failure lands as a separate bill. Predictable service, unpredictable parts cost. - Comprehensive, fixed fee: the fee includes parts/replacements within the defined scope. Higher fee, but it caps your exposure — a failed compressor or pump is "in the contract," not a shock. Best where downtime/parts are expensive and you want budget certainty. - Pay-per-call / on-demand: no retainer; you pay each time you call. No planned maintenance, and you pay premium reactive rates when something fails. Only sensible for low-criticality, cheap-to-fix items.
How to compare fairly (this is the whole game): - Read the inclusions AND exclusions, not the headline: what parts/components are covered, what's explicitly excluded, consumables, number of PPM visits, emergency call-outs, response times. - Normalise scope: make every quote cover the same equipment list, same visit frequency, same response — then the prices are comparable. A "cheap" AMC is often cheap because it excludes the expensive parts. - Match model to criticality: revenue-critical / expensive-to-repair kit (cooling, refrigeration) leans comprehensive (cap the risk); trivial kit can be labour-only or per-call. - Watch the exclusions list — that's where the surprises live (compressors, boards, "wear parts," anything costly).
Common mistake: choosing the lowest fixed fee without checking that the expensive failures are excluded — then getting a big parts invoice the first time something serious goes. Get like-for-like scoped quotes from a chiller and HVAC maintenance provider and compare inclusions, not just the fee. Operators — comprehensive or labour-only for your cooling, and did an exclusion ever bite you?
The exclusions list is where the truth is. Two AMCs can look wildly different on price purely because the cheap one excludes compressors, boards and "major parts" — exactly the things that actually cost money when they fail. For critical cooling we go comprehensive precisely to cap that risk; budget certainty is worth the higher fee when a compressor failure would otherwise be a five-figure surprise. Normalise the scope across quotes first, then compare — otherwise you're comparing a full service to a stripped one and calling the stripped one "cheaper."
Numbers view: comprehensive is essentially insurance — you pay a known premium to remove the tail risk of a big parts bill. Whether that's worth it depends on the kit's failure cost: for a chiller or commercial refrigeration, yes; for a cheap easily-swapped item, no, run it labour-only or per-call. The trap is judging on the annual fee alone; you have to price in the *expected* parts cost the cheap contract leaves you exposed to. Same-scope quotes, read the exclusions, then decide which risk you'd rather hold.
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