The East Palatka condenser that never shuts off, and the forty acres of cool ground under it

A compressor that will not quit roaring

Out on the rural lots between East Palatka and the fairgrounds, the houses sit on an acre or more and the nearest neighbor is a field of potatoes or cabbage. The sound a homeowner notices is the outdoor unit. In July it starts around noon and does not stop until well after dark, because the inland river basin runs a degree or two hotter than the coast and the air is saturated. The power bill arrives from FPL and confirms what the ears already knew.

That is the moment someone searches for geothermal. The ground a few feet below that lot holds a nearly constant temperature in the low 70s, winter and summer. A system that could shed heat into 72-degree soil instead of 92-degree air would run less, cost less to run, and make no noise outside. Whether it makes sense for that particular property is the question Cook’s comes out to answer.

What we evaluate on a geothermal site visit

Geothermal is the one HVAC job where the lot matters as much as the house. The visit covers:

• Land and layout. Horizontal loops need room: long trenches, several feet deep, clear of the septic drainfield, the well, driveways and large trees. The sandy acreage around East Palatka and San Mateo usually has it. A lot in the North Historic District does not, which pushes the design to vertical bores.
• Soil and water table. Sandy soil digs easily but transfers heat slowly, so loops run longer than in clay. The water table in the river basin is often high, which helps heat transfer and can complicate trenching. On the sand ridge toward Interlachen and Florahome we also pay attention to known sinkhole-prone ground before anyone drills.
• The existing ductwork. A ground-source heat pump still needs ducts. A manufactured home with crushed belly duct or a historic house with undersized returns needs duct work first, or the new system inherits the old problems.
• Electrical service. The unit itself draws less than a conventional system, but the install may need a new circuit, and we look at surge protection because rural Putnam lines take lightning every summer.
• The well. Where there is one, we look at whether open-loop is viable (usually not, given iron and sulfur) and whether the same drilling trade can place vertical loops.
• Your horizon in the house. Geothermal pays back over years. We ask, because the honest answer sometimes points to a conventional heat pump.

What it usually comes down to

After a few dozen of these conversations across Putnam County, the pattern is clear. Geothermal fits best when three things line up:

1. Space. An acre or more of open ground, or a budget for vertical drilling.
2. A long horizon. Owners who intend to stay in the house ten years or more, which describes a lot of this county, where nearly three quarters of homes are owner-occupied.
3. A system that is due anyway. When the old condenser has a failing compressor or is on R-22, the replacement cost of a conventional system is already on the table, and the geothermal premium is the difference, not the whole price.

When those line up, a ground-source system is the quietest, most efficient equipment we install. When one is missing, we usually point to an efficient conventional heat pump instead and say why.

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Bores, trenches and the other numbers behind a loop quote

We do not publish prices, because the loop is the variable and no two lots are alike. What moves the number:

Monthly installments are an option on new high-efficiency systems with low monthly payments; the terms are discussed in person. Nothing federal enters the math; 25D ran out with 2025. Utility rebates depend on which company serves the address: FPL in Palatka and East Palatka, Clay Electric across most of the rest of the county. Ask where Cook’s stands on FPL’s contractor enrollment. [[CONFIRM WITH JERRY]]

When a conventional replacement is the better call

Cook’s installs geothermal and still talks more homeowners out of it than into it. A standard high-efficiency heat pump wins when:

• The lot cannot take a horizontal loop and the vertical drilling cost erases the savings.
• The home may be sold within a few years.
• The existing duct needs so much work that the budget should go there first.
• The house is a manufactured home on a package unit; the geometry rarely suits a ground-source retrofit.
• The homeowner’s real problem is a dirty coil and a weak capacitor on an otherwise sound system, and a repair is what is called for.

A modern air-source heat pump in this climate is efficient, quiet enough, and a fraction of the cost. For a lot of Palatka homes it is the right answer, and we will not argue against that to sell a bigger job.

The East Palatka lot, finished

Back to the house where this started: two sandy acres, a fifteen-year-old R-22 condenser with a leaking coil, owners who were not leaving. Horizontal loops went into the open ground, the duct was sealed, and the indoor unit took the air handler’s spot. The next July there was nothing outside to hear, and the FPL bill came down. The payback is still years out, and they knew that going in, because we told them.