Commercial cooling audit · hot and humid buildings
Find where the cooling load begins—and where the system loses.
A commercial cooling audit connects the occupied complaint to heat gain, moisture, air distribution, pressure, controls, equipment operation and the building schedule. The result is a measured action list: what to correct first, what needs a qualified trade and what must be checked after the work.
This field-screening scope is not an ASHRAE energy-audit designation, engineered load calculation, code inspection, equipment diagnosis or authorization for regulated work. The written proposal identifies the exact measurements and responsible parties.
What makes the audit useful
A baseline that survives the repair conversation.
A thermostat number cannot explain a whole building. The baseline records where people are uncomfortable, when the condition appears, what the weather and occupancy are doing, which equipment is operating and how heat and moisture move through the site.
That common record helps an owner, tenant, facility manager and qualified trade discuss the same condition instead of comparing disconnected service tickets.
- Complaint
- Location, timing, severity and business effect
- Context
- Weather, occupancy, doors, exhaust and schedules
- Building
- Roof, glass, envelope, internal loads and air paths
- System
- Controls, distribution, equipment identity and operation
- Decision
- Ranked corrections, assigned responsibility and acceptance checks
Six connected audit layers
Measure the building people use—not one isolated component.
The exact instrument set depends on access, equipment, qualifications and the question the owner needs answered. Missing facts stay labeled as missing.
Complaint and operating pattern
Map the affected zones, time of day, weather, occupancy, doors, exhaust, setpoints, schedules and recent changes.
Heat and moisture map
Compare occupied air, upper space, supply, return, outdoor air and relevant surface conditions with time and operating state attached.
Air delivery and pressure
Trace supply and return paths, restrictions, door behavior, exhaust interaction, infiltration clues and quantitative tests where they can change the decision.
Controls and electrical context
Record sensors, thermostats, schedules, staging and accessible operating indications; route electrical measurements to the qualified party.
Equipment and heat rejection
Connect equipment identity and qualified HVAC findings to delivered air and occupied performance instead of stopping at component operation.
Load-reduction opportunities
Screen shade, roof and envelope work, internal loads, schedules, useful air movement, ventilation control and commissioning before adding capacity.
Useful outputs
Leave with a decision record—not a pile of readings.
Each conclusion identifies its supporting observation, uncertainty, responsible party and completion check.
Condition map
Rooms, zones, equipment, air paths and time-stamped operating conditions tied to the original complaint.
Ranked action plan
Immediate operating corrections, qualified-trade diagnostics, repair or commissioning work, controlled trials and longer-term options in a rational order.
Closeout criteria
The temperature, humidity, airflow, pressure, control, drainage or occupied-result checks that show whether the accepted scope worked.
Commercial cooling audit questions
What owners usually need to know first.
What is included in a commercial cooling audit?
The proposed scope can cover the complaint pattern, temperature and humidity mapping, air paths, pressure relationships, controls, accessible equipment identity, operating schedules, obvious envelope and internal loads, prior records and defined closeout measurements. The exact tests are confirmed in writing.
Is this the same as an energy audit?
Not automatically. This page describes a cooling-focused building investigation. A formal energy audit, engineered analysis, code inspection, load calculation or regulated trade diagnosis requires its own accepted scope and qualified responsible party.
Can the audit explain why a business stays hot?
It can organize and test the likely causes under the condition that creates the complaint. Heat gain, airflow, pressure, moisture, controls and equipment can overlap, so the conclusion remains bounded by access and measured evidence.
Will it tell me whether to repair or replace the AC?
It can supply the building-level facts needed for that decision and combine them with findings from the qualified HVAC provider. Age alone is not the decision; load, capacity, distribution, controls, condition, repairability and accepted performance all matter.
Should we add a mini-split to the hottest room?
A mini-split may be appropriate for a distinct measured zone load, but the audit first checks whether an upstream airflow, control, power, envelope, ventilation or base-equipment fault should be corrected.
What should I send before the site review?
Send the address, building use, affected spaces, problem timing, equipment labels, thermostat or control photos, recent service records, business hours and the person authorized to approve access and work. Unknown information can remain unknown.