Builder-grade heat pumps from the 2005 boom are coming due across St. Johns County
A whole generation of St. Augustine houses got the cheapest heat pump that met code, all in the same four years. Those systems are failing now, in the same four years.

A generation of houses, a generation of heat pumps
Between about 2004 and 2008, St. Johns County built faster than almost anywhere in the country. World Golf Village and Murabella filled in around International Golf Parkway; Palencia grew up US 1 toward Nocatee; the south end of St. Augustine Shores and the inland side of Anastasia Island got their last big waves of block-and-stucco homes. ZIPs 32080, 32084 and 32086 are each more than half built since 2000.
Every one of those houses got a heat pump, and nearly every one got the same kind: the lowest-efficiency unit that met code that year, sized by a rule of thumb, with builder-grade flex duct and a basic thermostat. Those systems are now sixteen to twenty-one years old. They have lived through two decades of mid-70s dew points, summer lightning and, for the ones east of the river, salt air. They’re failing on schedule, which is to say all at once.
That is who calls us for heat pump installation: the owner of a 2005 house whose original system just lost its compressor, or whose second coil leak in three years has made the repair-versus-replace math obvious.

Who else is calling
The boom-era owner is the biggest group, not the only one.
- Block-ranch owners in St. Augustine Shores and St. Augustine South on their second or third system, often with the original 1980s duct still in the attic.
- Davis Shores and bayfront owners replacing a unit that drowned in a king tide or a surge, and wanting the new one set higher.
- Historic-district owners in Lincolnville, Nelmar Terrace and the Model Land Company District whose retrofit ducted system never worked well, choosing between a better ducted unit and ductless heat pumps.
- Beach and island owners from Vilano to Crescent Beach whose condenser corroded through in ten years and who want a coated coil and a taller stand this time.
- New owners of any of the above, who inherited a system of unknown history and want to start fresh before the first summer.
Three installs, three different houses
A 2006 two-story in World Golf Village. Original 3.5-ton single-stage heat pump, compressor seized in June. Load calculation came back at 3 tons; the builder had oversized it. Installed a 3-ton variable-speed Lennox heat pump with a matched air handler in the garage, sealed the attic duct joints, added a media filter cabinet. One day, finished before dinner. FPL instant rebate shown on the quote, as the program allows through an enrolled installer. [[CONFIRM WITH JERRY]]
A 1979 block ranch in St. Augustine South. Third system for the house, second for this owner. The attic flex duct was original, crushed in two places and disconnected at one boot. The new heat pump would have been starved for air, so the duct repair went into the quote as its own line. Owner chose a two-stage unit and the duct work; the whole job took two days and the back bedroom finally cools, which it hadn’t done in years.
A 1950s cottage in Davis Shores. Picture an air handler and condenser that both sat in brackish water during Irma, limped for a few years, and failed together. New heat pump installed with the condenser on a stand above the base flood elevation and the air handler on a raised platform in the garage, with the drain and electrical rerouted to match. When the owner’s insurance adjuster asks for elevation photos, they are in the job file.

Get a free installation estimate
From load calculation to startup
- Estimate visit. We measure the house, work the cooling load room by room, inspect the duct and electrical, and talk about how you live in the house. You get two or three equipment options in writing, with the FPL rebate noted. The estimate is free.
- Scheduling. Any day of the week, including weekends, with no after-hours charge. Most jobs are one day.
- Removal. Refrigerant recovered, old equipment out, disposal handled.
- Set and connect. New condenser on its pad or stand; new air handler or coil; line set flushed or replaced; drain and float switch; electrical and disconnect; thermostat.
- Evacuate and charge. The system is pulled into a deep vacuum and charged by weight and by measurement, not by feel.
- Startup. Full cooling and heating cycles run and measured: temperature split, static pressure, amp draws, defrost cycle, strip staging. Thermostat set up as a heat pump with auxiliary lockout.
- Walkthrough and paperwork. Operation explained, filter schedule set, warranty registered, permit inspection scheduled.
The crew rolls from Palm Coast, about 24 miles off, with the equipment already loaded.
The paperwork you keep
Cook’s installs Lennox and stands behind the installation with a satisfaction guarantee. The written paperwork you keep includes the equipment model numbers, the manufacturer’s parts and compressor warranty terms with the maintenance requirement that keeps them valid, our workmanship commitment, the permit record, and the rebate and credit documentation. Monthly installment terms exist for efficient new equipment; we go over the application before anything is scheduled and never quote a lender or a rate on a web page.
What we don’t put in writing: a price by phone, or a tonnage guessed from square footage. Both have cost too many St. Augustine homeowners a system that was wrong for the house.
Replacement questions, before the truck is loaded
Is my existing duct system reusable?
Often, and we test it rather than assume. A static pressure reading and a look in the attic tell us whether the duct can move the air the new system needs. Boom-era subdivisions usually have serviceable duct with a few leaks to seal; 1980s block ranches often have crushed or undersized runs that we price as a separate line so you can see the choice.
What happens to the old equipment?
We recover the refrigerant legally, disconnect both old units, the condenser and the air handler, and haul them away for recycling. Nothing is left in the yard or the garage, and the disposal is included in the installation.
What's actually bundled into the installation?
The equipment, a new pad or stand, line-set flush or replacement, a new drain with a float switch, electrical connection and a new disconnect, a thermostat configured for the system, evacuation and charging to specification, permit and inspection, startup testing, haul-away, and warranty registration. Add-ons like duct repair, a media filter or an elevated platform are itemized.
Should the air handler be swapped along with the condenser?
On a system past ten years, almost always. The indoor coil and outdoor unit are designed as a matched pair, and bolting a new condenser to an aging air handler loses efficiency and may not be covered by the warranty. If the air handler is only a few years old and a listed match exists, we’ll quote keeping it.
Does the HOA in my subdivision need to approve the new unit?
Some St. Johns County HOAs want notice if the unit’s location or screening changes; a like-for-like replacement in the same spot rarely needs it. In the city’s historic districts the review board, not an HOA, governs visible exterior equipment, and we’ve worked within those rules.
Other services in St. Augustine
- A/C ServicesRepair, maintenance and replacement for every age of house in St. Johns County.
- A/C RepairDiagnosis you can read, a price before the work, no surcharge after dark.
- A/C MaintenanceTwice-a-year tune-ups timed to this climate, with the coil cleaned and the drain cleared.
- A/C InstallationLennox systems sized for your house, installed any day of the week, FPL rebates handled.
- ThermostatsInstallation, replacement and the wiring fixes that make a thermostat actually work.
- GeothermalGround-source heat pumps for St. Johns County lots, with a clear decision path for older systems.
- Heating ServicesHeat pumps, electric furnaces and gas furnaces repaired, maintained and replaced across St. Johns County.
- Heat PumpThe one system that heats and cools a St. Johns County building, installed, repaired and maintained by Cook's.
- Heat Pump RepairSame-day heat pump repair across St. Johns County, no after-hours surcharge, every brand.
- Heat Pump MaintenanceSpring and fall heat pump tune-ups built for St. Johns County humidity, salt and storms.
- Furnace RepairElectric and gas furnace repair across St. Johns County, with the diagnosis explained and priced first.
- Furnace MaintenanceA November furnace check for electric, gas and dual-fuel heat, before the first cold front.
- Furnace InstallationGas, electric and dual-fuel furnaces installed in St. Johns County, with the heat pump alternative laid out honestly.
- Air QualityHumidity control, filtration, purification and ventilation for St. Johns County homes, measured before anything is sold.
- Indoor Air QualityFiltration, purification, humidity control and ventilation, chosen by a decision tree rather than a sales pitch.
- Duct CleaningDuct cleaning and sealing for St. Johns County homes, with the attic and crawlspace problems that cause the mess addressed too.
- CommercialRepair, maintenance and installation for St. Johns County storefronts, offices, restaurants and clinics, around the clock.
Original system, original house, time to decide
Free estimate from {{short_name}}, FPL rebate applied, financing available.