The thermostat in a Palatka Heights ranch reads 80 at five o'clock: when the honest answer is the whole system
A system that runs all afternoon and loses ground to the heat is telling you something. Sometimes it is one part. Sometimes it is time.

The reading on the wall
Five in the afternoon in a 1960s ranch in Palatka Heights, a block off St. Johns Avenue toward Ravine Gardens. The system has run since one o’clock without stopping. The thermostat is set to 76 and reads 80. The outdoor unit is from the early 2000s; the air handler in the hall closet came with the house. Last summer it was a capacitor. The summer before, a fan motor. This summer it is not cooling, and the technician who comes out can fix today’s part and is honest enough to say that another part is coming.
That is the moment a complete system becomes the right conversation, and it is a conversation Cook’s has in Putnam County more than in wealthier markets, because the housing is older and the equipment has been kept alive longer.
Who should replace the whole system
- The owner of a system past about fifteen years with a major component failing: compressor, evaporator coil, or a handler rusting through.
- Anyone with mismatched halves from two different decades, which is common in houses that have changed hands a few times.
- Anyone on an old refrigerant whose leak repair now costs a meaningful share of a new system.
- The household whose summer bill has climbed every year without a change in habits.
Who should not: the owner of a system under about twelve years with a single failed part. That is a repair, and we will make it.
How a matched system works
A complete system is an outdoor unit, an indoor unit and a control, rated together by the manufacturer. The rating on the label assumes that pairing. A matched Lennox system also gets a new line set or a flushed one, a properly trapped drain with a float switch, a thermostat that can run the staging the equipment offers, and ductwork checked for the airflow the new equipment needs.
The last item is the one that separates a good install from a disappointing one in Palatka. A high-efficiency system on a 1960s duct trunk with a single hall return does not deliver its rating; it delivers a quieter version of the old problem.

Sizing for the housing here
Putnam County’s median house dates to around 1972, and the mix is unusual: 1890s-1920s frame houses in the historic districts, 1950s-70s block in Newtown and along US 17, a very large share of manufactured homes, lake cottages west and south. Every replacement gets its own load calculation rather than copying the old nameplate, because the old unit was often oversized, and because an oversized system in this humidity leaves the house cool and damp. In most Palatka houses the calculation comes out at or below the existing tonnage.
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Efficiency and rebates
Equipment is rated in SEER2 for cooling and HSPF2 for heat pump heating. Over an eight-month cooling season, the step from entry-level to mid-tier equipment usually pays for itself before the system is old; above that the payback lengthens, and we show the math instead of pushing the tier.
The utility rebates depend on which company sends the bill, as described in the questions below. The 25C credit closed with the 2025 calendar, so we build the numbers without one. Lennox installs and all-brand service run out of Palm Coast, and the invoice is the same whatever the hour.
Whole-system questions from Palatka
The outdoor unit died but the air handler works. Why are you quoting both?
Because they are two halves of one machine. A new outdoor unit on a twenty-year-old handler runs below its rating, may not be a pairing the manufacturer warranties, and leaves you replacing the handler in a year or two anyway. We will quote the half when it genuinely makes sense; at this age it rarely does.
How long is a house without cooling during a full system replacement?
For a single-system house, one working day. The crew arrives in the morning from Palm Coast, the old equipment is out by midday, and the new system is running and tested by late afternoon. Anything on back-order is flagged before the day is scheduled.
Which rebate applies to us: FPL or Clay Electric?
Depends on the meter. Palatka and East Palatka are FPL territory; FPL’s residential program pays a rebate on qualifying systems through contractors it has enrolled, and where Cook’s stands on enrollment is a question for Jerry. [[CONFIRM WITH JERRY]] Interlachen, Melrose, Florahome and most rural addresses are Clay Electric, whose Energy Smart rebate applies to a qualifying replacement heat pump with an application filed within 180 days.
Is a complete system a bigger financing commitment than I can manage?
A complete high-efficiency system is exactly the purchase our monthly payment plans exist for. We do not publish lender terms because they change; they are in the written quote.
Losing ground every afternoon?
Call for a complete-system quote at no charge. We quote the house, not the brochure.