Memorial Day weekend in Watertown, a dead 1998 package unit beside the double-wide, and the Tuesday install

The weekend it quit

Memorial Day weekend is when Lake City’s cooling season stops pretending. The first 90-degree afternoon of the year lands, the humidity arrives with it, and every air conditioner in Columbia County gets its first real test. At a double-wide off SR 100 in Watertown, a 1998 package unit took the test and failed: the fan ran, the compressor did not, and by Saturday evening the house was 84 inside.

The homeowner had done the sensible things. Checked the breaker, changed the filter, hosed the pine straw off the coil. Nothing. She called 866-266-5709 on Sunday morning, and because there is no after-hours charge the dispatcher simply booked the first opening, which was Tuesday.

What we recommended, and why not a split system

The unit was a packaged heat pump, the kind that puts compressor, coils and blower in one cabinet outside and connects to the house with a short duct through the skirting. It had done twenty-six summers, which is a full life for anything that lives outdoors in this climate under pine trees and afternoon lightning. The compressor was gone, the coils were corroded, and the refrigerant it used is no longer produced. Repair was not a serious option.

The question was whether to replace like-for-like or convert to a split system with an indoor air handler. For most manufactured homes the answer is a new package unit: there is no closet or attic for an air handler, the duct is designed for a single connection point, and the cost difference buys the duct repair that actually matters. We quoted a two-stage packaged heat pump sized from a load calculation rather than the old nameplate, which came out half a ton smaller than the unit leaving. A raised pad, a hard-wired surge protector and a float safety were on the quote. So was crawling under the house.

Install day on a crawlspace home

Tuesday morning the truck came in on SR 100 and the old unit was disconnected by nine. Under the skirting, the technician found what we find under most manufactured homes in the county: the belly-board duct had a two-foot tear near the plenum and the insulation had slumped away from a long run toward the bedrooms. That tear had been dumping cold air into the sand for years and was a good part of why the back bedrooms never cooled.

The duct was repaired and resealed, the plenum connection rebuilt, and the new unit set on a stand above the grade where water pools in a June storm. Electrical was brought up to current requirements at the disconnect. By mid-afternoon the system was charged, the airflow at each register checked, and the thermostat set.

Schedule a package unit replacement

The first summer with it

The difference a homeowner notices first is not the bill; it is the bedrooms. With the duct sealed, the far end of the house holds the same temperature as the living room for the first time. The second thing is the quiet: a two-stage unit spends most of a Lake City afternoon on low, and the roar that used to announce every start is gone. The bill came third, with the FPL statement for Watertown, which is inside FPL territory, running meaningfully lower in July than the year before despite a hotter month.

The maintenance that follows is simple and important. Pollen off the coil in April, the drain checked before the June rains, the strip heat verified in November before the first freeze. Pine straw cleared whenever it drifts against the cabinet. A unit that lives outside in this county earns its twenty years only if someone looks at it twice a year.

Who else buys a package unit here

Small commercial roofs along US 90 and around the I-75 interchange, where hotels, restaurants and service shops run rooftop units by the dozen. Older block houses with no attic space for an air handler. And the manufactured homes on acreage from Five Points to Fort White, where the box on the pad is simply how the house was built to be cooled.