Healthy Climate equipment for a San Marco house once the June rains start

The first week of June on the Southbank

San Marco was laid out in 1926 as a Mediterranean Revival neighborhood, and its riverfront streets have been dealing with the St. Johns ever since. Matthew in 2016, Irma in 2017 and Nicole in 2022 all pushed tidal water onto those blocks, and even in a quiet year the lower lots take on moisture every time a nor’easter stacks the river.

So picture a 1920s stucco house two streets back from the river. The ground-floor utility room still shows a faint line on the wall from 2017. The family keeps it dry, mostly. Then the first week of June arrives, the rainy season begins in earnest, and within days the house smells the way it does every summer: not mold exactly, but the damp-paper note of a space that cannot dry out. Their daughter’s allergies flare, and the thermostat says 75 while the air feels like a greenhouse.

This is the seasonal moment that sends riverfront homeowners to the Lennox Healthy Climate line.

What we recommend for that house

Healthy Climate is Lennox’s family of indoor air quality equipment. It spans four jobs, and the San Marco house needs three of them:

1. Dehumidification. A whole-house dehumidifier ducted to the air handler, set to hold the house near 50 percent, running on humidity rather than temperature. In June this does more than any other single piece.
2. Purification. A purifier in the supply plenum that neutralizes the biological contaminants and odors produced by a damp structure, rather than just trapping dust.
3. Filtration. A deep media cabinet at the return for the pollen and street grit the old windows let in.

The fourth job, ventilation, is skipped here. A 1920s house with original casements already exchanges plenty of air; adding an ERV would spend money the dehumidifier spends better. A UV lamp goes in over the coil as well, because a wet coil in a damp room is where the smell starts.

The day the Riverside crew arrives

The utility room’s flood line sets the plan. The air handler, if it is being replaced along with the air quality equipment, goes on a platform above that line; if it is staying, we confirm it is already there. The dehumidifier hangs from the ceiling or sits on a shelf, ducted to the return, draining into the condensate line with its own float switch. The purifier mounts in the supply plenum and wires to run with the blower. The filter cabinet replaces the one-inch slot at the return, and the return itself is enlarged, since 1920s returns rarely feed a modern blower properly. The UV lamp goes at the coil. A surge protector goes on the whole system, because June also starts the lightning season.

The crew is there most of a day. Nothing changes in the living rooms except a new thermostat screen and, within a week, the air.

Schedule a Healthy Climate estimate

Living with it through August

By late June the dehumidifier runs on and off all day, and the hygrometer in the hall reads 50. The smell is gone by the second week. In July, when the system runs for hours, the dehumidifier mostly rests. August brings the muggiest stretch of the year; the house holds at 76 degrees and feels cool at that setting, so the family raises the thermostat a notch and the JEA bill comes in no higher than last year’s.

The care routine: rinse the dehumidifier’s filter monthly through September, change the media filter after pollen season and again in the fall, and have the purifier and UV lamp checked at the fall maintenance visit. If the river comes up again, the equipment is above it.

Cook’s installs the Healthy Climate line as a Lennox dealer and services it afterward. Ask which Healthy Climate models are stocked for Jacksonville jobs; the combination above is the one we would specify for the house. [[CONFIRM WITH JERRY]]