A package unit install day in Baker County, from the 7 a.m. call to the 4 p.m. reading
Most of Baker County's homes heat and cool with one box on a pad outside. Replacing that box is a one-day job when it's planned right. Here is the day.
Who the package unit suits
A package unit puts the compressor, the coils, the blower and the heat section in one cabinet outside the home, connected by a short supply and return duct through the wall or floor. It suits homes with no room inside for an air handler, no attic to speak of, and a duct system designed to meet it at the skirting: which describes most manufactured homes in Macclenny, Glen St. Mary and Sanderson, and a fair number of the 1970s-80s block houses too. It also suits owners who want one piece of equipment to service, one pad to keep clear, and one rebate to file.
How it works, briefly
Air from the home enters the return side of the cabinet, passes over the indoor coil, and goes back out the supply duct. In cooling, the compressor moves heat from that coil to the outdoor coil and the fan throws it away. In heating, a package heat pump reverses the cycle, and on the coldest mornings electric strips in the cabinet add heat. Everything that can break is in one box in the yard, which makes service straightforward and makes the pad, the duct connection and the drainage the parts that decide how long it lasts.
The day, as it typically runs
7:00 a.m. The crew leaves 37 Fairmont Ln in Palm Coast. Baker County is about ninety miles by I-95 and I-10, so the install day starts early, with everything for the job loaded before the truck leaves.
8:45 a.m. Arrival. Power off at the disconnect and the panel. The old unit is disconnected, the duct connection cut free, the refrigerant recovered properly.
9:30 a.m. The pad. A settled, cracked or undersized pad is replaced or leveled. On sandy Baker County ground this is more common than not.
10:15 a.m. The new unit set and the duct connection re-made with insulated, sealed collars, not the old flex stub that leaked for a decade.
11:00 a.m. Under the home. If the belly ducts are torn or separated, and they usually are, they’re sealed or replaced now, because a new unit on bad ducts is money thrown under the house.
1:00 p.m. Electrical. New whip, disconnect checked against the nameplate, the breaker confirmed. A surge protector at the disconnect, because Baker County’s summer lightning finds control boards.
2:00 p.m. Thermostat, condensate drain routed away from the pad, and start-up: charge verified by measurement, airflow across the coil checked, heat strips tested under load, defrost cycle confirmed.
3:30 p.m. Walkthrough with the homeowner: filter location and size, the thermostat, what normal defrost steam looks like in December, and the maintenance schedule.
4:00 p.m. Final temperature readings at the registers, paperwork for the warranty registration and the rebate, and the drive home.
Schedule a package unit estimate
Sizing for a manufactured home
Manufactured homes have less thermal mass, more window per square foot and ducts that run through unconditioned space, so the rule-of-thumb sizing that put oversized units on them for decades gets it wrong in both directions. A proper load calculation accounts for the home’s actual insulation values, the window area and orientation, the duct losses and the number of occupants. The result is often a smaller unit than the one being replaced, which runs longer cycles, pulls more humidity and costs less to run. Two-stage package units, where the budget allows, handle the mild days in the low stage and the July afternoons in the high.
Efficiency and the rebate
Clay Electric’s Energy Smart program offers members a rebate on a new heat pump that meets a minimum efficiency, with the co-op’s figure set at 15 SEER as this was written. Members in the Baker County portions of Clay’s territory qualify under the program’s rules; Okefenoke REMC and FPL customers have their own programs or none. JEA’s rebate doesn’t reach Baker County. The federal 25C credit ended at the close of 2025. Cook’s confirms the utility at the estimate, specifies equipment that clears the applicable minimum, and walks through the rebate documentation at install. Financing with low monthly payments is available on new systems and estimates are free.
After the day
Package units live outside full time. Twice-yearly maintenance, a clear pad, a filter changed on schedule and the belly duct checked every couple of years is what keeps the day described above from happening again for a long time. Cook’s is a family-owned Lennox dealer that installs and repairs package units across Baker County, with the phone answered around the clock and no after-hours charge.
Package unit questions from Baker County
Can I go from a package unit to a split system?
Sometimes, if the home has a place for an indoor air handler and a path for refrigerant lines. On most manufactured homes the package unit remains the practical choice because the duct connection and the equipment location are already designed for it.
What size do I need for a double-wide?
It depends on the home’s insulation, windows, orientation and the duct system, not just the square footage. We run a load calculation; the answer is often smaller than the unit being replaced, because oversizing was common.
Gas or electric heat in the package unit?
A package heat pump with electric backup strips suits Baker County’s roughly fourteen freeze nights a year well and keeps one fuel. Gas-electric package units exist where propane is already on the property. We talk through both.
How long before the Clay Electric rebate shows up?
The co-op’s program, its paperwork and its timing are theirs. We make sure the equipment meets the minimum efficiency and that the documentation is complete at install. Ask for the current program terms. [[CONFIRM WITH JERRY]]
Need a hand in Jacksonville?
Call any hour. Real people answer, and there are no after-hours charges.