Start with the intended crop, purchased material stage, room loading and operating calendar. These define work the building and equipment must support. A fan, cooler or rack quotation by itself does not show that the combined system can meet that brief.
Ask the responsible designer to state the design conditions, duty, utility needs, maintenance access, control intent, alarm response and acceptance tests. Compare quotations against the same scope, including what is excluded.
Plan staged checks: installation and safe operation by qualified people, instrument verification, documented room tests, then assessment under an appropriate operating load. Keep unresolved items visible. Do not use a conceptual room picture as a construction drawing or a sizing calculation.