The heat pump that works a 92-degree Palatka July and a 30-degree January with the same four parts
The inland St. Johns basin runs a degree or two hotter than the coast, holds oppressive humidity from June through September, and still throws a dozen freezes a winter. A heat pump is the one machine built for all of that, provided someone looks after it.

The weather this equipment has to survive
Palatka’s weather asks more of a heat pump than the coastal towns do. July mean highs sit around 92, a degree or two above the beach, and the humidity that settles over the river basin by June does not lift until late September. Roughly 53 inches of rain a year keep the air heavy and the condensate drains busy. Then winter arrives with a dozen or so light freezes, a record low of 11, and mornings in the 30s that ask the same outdoor unit to pull heat out of cold, wet air.
Add the local hazards: summer lightning on rural lines, iron and sulfur in well water scaling anything the condensate touches, and, for houses along the St. Johns, Dunns Creek and Crescent Lake, the memory of Irma and Ian putting equipment under water for a week. A heat pump here works harder across more conditions than almost anywhere in the state. Cook’s services them with that in mind.
What a heat pump visit is not
Before describing the service, it helps to say what people sometimes expect that it is not:
- It is not an air conditioner check with a heating box ticked. A heat pump has a reversing valve, a defrost control, outdoor sensors and auxiliary strips that a straight-cool system does not. A visit that skips them is half a visit.
- It is not a refrigerant top-off. Adding refrigerant without finding the leak is a repeat call in six weeks.
- It is not a filter change and a sticker. The filter is yours to change monthly. Our visit is the parts you cannot reach or read.
- It is not a sales call. Most heat pumps we visit in Putnam County leave the visit as the same heat pump, running better.
- It is not a duct replacement. But it includes looking at the duct, because in this county the duct is the problem more often than the equipment.

What the service actually covers
Cook’s heat pump service covers the whole life of the machine: diagnosis and repair when it fails, seasonal maintenance to keep it from failing, and replacement when the numbers say so. We are a Lennox dealer and install the Lennox heat pump line, including the variable-capacity models that suit this climate well, and we service Carrier, Bryant, Trane and every other major brand already running in Palatka homes.
The equipment comes in the forms this county actually has: split systems with a condenser outside and an air handler in a closet, garage or attic; package units on pads beside manufactured homes in East Palatka and San Mateo; and ductless mini-splits for the historic-district homes that never had ducts. All three are heat pumps. All three get the same attention.
The visit, step by step
A heat pump service call in Palatka runs in this order, whether the complaint is no cooling in August or no heat in January:
- The thermostat and wiring. Is it a heat pump thermostat? Houses that changed systems but kept the old control are common here, and a straight-cool thermostat cannot run a heat pump properly.
- The outdoor unit. Coil condition, fan, capacitor and contactor, then the reversing valve and defrost board. We run a defrost cycle manually in any season to prove it works.
- Refrigerant. Pressures and temperatures on both sides, and a leak search if the charge is off. On a heat pump, a low charge shows up as weak heating long before it shows up as weak cooling.
- The air handler. Blower, indoor coil, the auxiliary heat strips and their sequencers, and the condensate drain, which on a well-water house is treated for iron and sulfur.
- Airflow and duct. Static pressure, supply temperatures room by room, and a look at the duct in the attic or under the home.
- Surge and flood history. A check of the disconnect and board for surge damage, and, near the river, for corrosion from past high water.
- The verdict and the price. What it is, what it costs, and whether it is a repair or the start of a replacement conversation. Nothing is installed before you say yes.
How to get ready for the visit
A little preparation makes the visit faster and the diagnosis better:
- Clear the outdoor unit. Two feet on all sides. Palmetto, pine straw and the lawn mower’s clippings pile up against condensers here.
- Clear the air handler. If it is in a closet that has become storage, we need to open it fully.
- Note what you noticed. When it started, what the thermostat showed, any sounds, any smells, whether the bill jumped. Aux heat on the display at 55 degrees is a clue. Steam off the outdoor unit on a cold morning is not.
- Know your utility. FPL serves Palatka and East Palatka; Clay Electric serves most of the rest of the county. It matters for rebates if the visit turns into a replacement.
- Find the paperwork. The install date and any warranty registration, if you have them. Many systems in Palatka Heights and The Hammock have changed hands with the house and the records are gone; the nameplate will do.
- Have the dog inside. It helps.
When the heat pump is the wrong size for the house
A quick word on the most common thing we find that is not broken. Heat pumps in this county are frequently oversized, because someone once believed bigger cooled better. In a humid river basin, an oversized heat pump short-cycles, leaves the house damp, and in winter leans on its strips because it never runs long enough to warm the house steadily. When a replacement is in order, Cook’s sizes by a load calculation on the actual house, and the right size is often smaller than what came out.
For heat pump repair, maintenance or a new system anywhere in Putnam County, call 866-266-5709. A person answers around the clock, and the price does not change after dark.
Heat pump questions from the river basin
How many visits a year does a heat pump really need in Putnam County?
Two, because it works two seasons. A spring visit ahead of the long cooling run and a fall visit before the first freeze, when the defrost cycle, reversing valve and backup strips get tested under the conditions they will actually face. A cooling-only system can get by on one; a heat pump that skips fall gets found out in January.
Why is the back bedroom always warm in summer and cold in winter?
Almost always airflow, not the heat pump. A long or crushed duct run, an undersized supply, a leak into the attic or crawlspace, or no return path from that room. We see it in historic-district retrofits and in manufactured homes with belly duct. A duct inspection with a static pressure reading finds it; a bigger heat pump does not fix it.
Does a heat pump pull humidity out of the air or just cool it?
It dehumidifies while it cools, and in our climate that matters as much as the temperature. The catch is run time: a heat pump that is oversized or set to a fast fan speed cools the air before it has wrung much moisture out. Correct sizing and the right blower settings are the difference between 74 and comfortable and 74 and clammy.
My heat pump is steaming in winter. Is that a leak?
No. That is the defrost cycle. On cold, damp mornings frost builds on the outdoor coil, and the system briefly reverses to melt it, which produces a cloud of steam and sometimes a whoosh. It should last a few minutes and stop. If the coil stays iced over, or the system defrosts constantly, the defrost control or a sensor needs attention.
Other services in Palatka
- A/C ServicesRepair, tune-ups, replacement and thermostats across Putnam County, one phone number, around the clock.
- A/C RepairSame-day diagnosis, any brand, and an honest answer when the repair is really a replacement.
- A/C MaintenanceSpring tune-ups built for well water, pollen and twelve-year-old systems. Fewer breakdowns, lower bills.
- A/C InstallationRight-sized replacement systems for historic, block and manufactured homes, installed any day of the week.
- ThermostatsSmart, programmable and plain thermostats, matched to your system and set up for a Putnam County summer.
- GeothermalGround-source heat pumps for rural Putnam County lots, with honest advice on when they pay and when they don't.
- Heating ServicesHeat pumps, gas furnaces, strip heat and mini-splits, serviced from one truck for a short, costly season.
- Heat Pump RepairFast heat pump repair for block houses, manufactured homes and historic retrofits, any brand, any hour.
- Heat Pump MaintenanceSpring and fall heat pump tune-ups that show up on the power bill before they show up anywhere else.
- Heat Pump InstallationNew heat pumps sized for the house, installed in the March window before the eight-month cooling season begins.
- Furnace RepairGas, propane and floor-furnace repair for a county that heats briefly and cannot afford to heat badly.
- Furnace MaintenancePre-winter furnace and strip-heat checkups, built for a county that heats a dozen mornings and cannot afford a bad one.
- Furnace InstallationGas furnace installation for homes and businesses on Palatka Gas Authority lines, and an honest heat pump alternative for everyone else.
- Air QualityFiltration, purification, ventilation and humidity control for a county of oak pollen, mill dust and damp crawlspaces.
- Indoor Air QualityDiagnosing the smells, dust and dampness inside Putnam County homes, and fixing the cause rather than masking it.
- Duct CleaningDuct cleaning and sealing for block homes, manufactured homes and historic retrofits, with a straight answer on when it's worth it.
- CommercialRooftop and split-system service, planned maintenance and after-hours installs for Putnam County businesses.
Heat pump not keeping up with the river-basin weather?
Call for service, a tune-up or a replacement estimate. One number, every hour of the year.