The most efficient system Cook's sells, and the one with the longest payback
A geothermal heat pump moves more heat per dollar of electricity than anything else on this site. Whether it earns back its install cost is a question about your land and your timeline.

The arithmetic
Start with what any heat pump does: it moves heat rather than making it, so one unit of electricity shifts several units of heat. The number of units it shifts depends on the temperature it’s working against. An air-source heat pump in an Ocala August is pushing heat into 95-degree air. A ground-source system is pushing it into earth that sits near 72 all year. The smaller the gap, the less the compressor works, and the ratio of heat moved to power used climbs accordingly.
That’s the whole efficiency case, and in this climate it’s real. Cook’s won’t put a percentage on it because the soil, the loop and the house all change it, but the direction is not in dispute.
The loop costs more on day one and less every year after
The upfront cost is where geothermal loses most comparisons. The indoor unit costs more than an air-source heat pump. The loop field is an excavation or drilling contract on top of that. Design is real engineering. Expect a multiple of a conventional replacement; Cook’s quotes it after a site visit, never from a table.
The lifetime cost is where it wins, slowly. Lower power bills every month. No outdoor unit to corrode on the coast or bake inland, so a longer equipment life. Fewer moving parts outside. Over fifteen or twenty years on a property the owner intends to keep, the lines cross. Over five years before a sale, they usually don’t.
Who it suits, then: owners of acreage around Gainesville, Ocala and the rural counties, properties with a productive well that opens the door to an open-loop system, and anyone planning to stay put for a long time. Who it doesn’t: a quarter-acre suburban lot, where drilling costs push the payback past the horizon and a high-efficiency Lennox air-source heat pump gets most of the benefit for a fraction of the price. Cook’s will say which you are.
Financing
A geothermal install can be financed through Cook’s like any other new system, with the price broken into monthly amounts. The conversation at the estimate covers the monthly figure against the expected bill reduction, in plain terms and without a promised savings number. The long-running federal tax credit for geothermal came to an end with the 2025 tax year, so Cook’s leaves it out of the arithmetic and points to any utility program instead. Lender names and terms are never published.
What Cook’s installs and maintains
Water-to-air ground-source heat pumps connected to the home’s ductwork, with horizontal or vertical closed loops or open-loop well systems depending on the land. Ask who designs and installs the loop on your property. [[CONFIRM WITH JERRY: loop partners]] After startup, Cook’s maintains the system: indoor coil and filter service, loop pressure and flow checks, and heat exchanger inspection for scale on open-loop systems. Manufacturer warranties are registered by Cook’s; the labor warranty term is a question for your estimate. [[CONFIRM WITH JERRY]]
Geothermal ownership questions
Why is geothermal more efficient than an air-source heat pump here?
Dig down a few feet anywhere in the territory and the soil stays around 72 degrees in every month. Rejecting heat into 72-degree earth in August is far easier than into 95-degree air, so the compressor works less for the same cooling.
What's the realistic lifespan of the parts?
The indoor heat pump is sheltered and lasts well beyond an outdoor condenser, often two decades or more. Buried loop pipe is warranted by its makers for several decades. The compressor is the wear item, as with any system.
Can the install be financed like a conventional system?
Yes. A geothermal system is a new system, so the same monthly payment program that covers every other Cook’s install covers it. Terms are discussed at the estimate. The federal credit for ground-source systems is gone for anything that went live after 2025; Cook’s will tell you what utility or manufacturer incentive applies instead.
Want the math done for your property?
A site visit looks at the land, the water and the house before anyone quotes equipment.