Air Supply Cooling

One Suite Complains, the Suite Next Door Is Fine

A common commercial complaint follows a familiar pattern. One suite in a multi-tenant building is uncomfortable, the suites on either side are fine, and the tenant has already been told by somebody that the building is the problem. Usually the building is not the problem in any general sense. The trouble is specific to that suite, and it is normally a mismatch between how the space gets used now and how the air was originally arranged to move through it.

The valley is full of business-park buildings off the 215 that were built as open shells with a rooftop package unit per suite. Then tenants improve them. A showroom and a counter get carved out of the open floor, a stockroom gets walled off at the back, a manager's office goes in a corner, and the duct layout stays exactly where the original plan put it. Now one register serves a room with a door that stays shut, the return path sits behind a run of shelving, and the thermostat is reading a wall nobody stands near.

For some tenants comfort is not the only stake. A business holding metal goods and coated glass in inventory cares about the humidity swing more than about two degrees. Run a deep overnight setback, then pull the space down quickly at open, and surfaces that spent the night warm can sit below the dew point of the incoming air long enough to sweat. The tenant sees moisture on stock and then hears an argument about whether that counts as an HVAC issue.

Retailers in that category are more common along that corridor than people assume. One of them is a gear and ammunition shop working out of a suite on West Russell Road, carrying exactly that sort of inventory. Optics, mounts, cases and ammunition all live on shelves that a tenant cannot move, in a room whose air the tenant did not design. Shops like that notice condensation well before they notice temperature, and by then it has usually been happening for a while.

So a suite call gets a different set of questions than a house does. Where does the stock actually sit relative to the registers. What is the overnight setback and who controls it. Has anything been built since the ducts went in. Is the return blocked. Most of the fixes that follow are duct and control work rather than a new unit, which is not what a tenant expects to hear and is usually the cheaper answer.

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