At eighteen years, the World Golf Village system reaches the point where replacing half of it stops making sense
The subdivisions at I-95 and International Golf Parkway were built in a few years, and their systems are failing in a few years. Here is the case for replacing the whole thing, and the case against.
Eighteen summers on a builder-grade system
Houses in World Golf Village, Murabella and the older streets of Palencia went up between about 2004 and 2008, and each got the system the builder’s contract specified: a single-stage heat pump, a basic air handler in the attic, a thermostat with two settings, all sized a little large to avoid callbacks. Eighteen summers of March-to-November cooling later, those systems are arriving at the end together. The capacitor has been replaced twice, the coil has a slow leak, the FPL bill has crept up every year, and the upstairs has never been comfortable.
At that age, a repair conversation and a half-replacement conversation both run into the same wall: the other half is just as old.
What a complete system means in this climate
A complete system is the outdoor unit, the indoor air handler or furnace with its coil, and the thermostat, selected as a matched set and sized together to the house. Lennox rates efficiency on matched pairs and warrants them as pairs. In St. Augustine’s humidity the matching matters more than elsewhere, because the long, low-speed cycles that wring water out of mid-70s dew point air only happen when the indoor blower and the outdoor compressor can both slow down together. A new variable outdoor unit on an old single-speed air handler cannot do that.
The trade-offs, both directions
For the complete system: one warranty covering everything, the rated efficiency actually delivered, eligibility for the FPL rebate, which requires matched equipment, a thermostat that can run the stages, and one install day instead of two spread over three years.
Against it: a larger invoice than a condenser swap, and the fact that a working air handler comes out. For a house with a recently replaced air handler, or an owner selling within a year, the half-measure can be the right call. We say so when it is.
Against the piecemeal alternative
The condenser-only swap looks like the thrifty choice until the second summer. The new outdoor unit runs a newer refrigerant generation than the 2005 coil was built for, the pairing is unrated so the efficiency on the label never shows up on the bill, the rebate is off the table, and the old air handler, now pushed harder by a stronger partner, fails in an attic in August. The owner pays for two attic jobs, two crane-free but miserable afternoons in a 130-degree space, and ends up with a mismatched system anyway. In a 2004 to 2008 house, the complete system is usually the cheaper path over five years, and we lay the two timelines side by side so the decision is yours.
What moves the price of a whole system here
- Tier. One stage, two, or modulating, which also sets the rebate and credit eligibility.
- Size. Set by a load calculation of the house in its present condition, never by the old nameplate.
- Location. An attic air handler in Murabella costs more labor than a garage unit in St. Augustine Shores.
- Ducts. Twenty-year-old flex duct often needs sealing or partial replacement to let the new system perform.
- Elevation and corrosion. Stands in Davis Shores and the bayfront; coated coils and stainless hardware at Vilano and Crescent Beach.
- Electrical. A 2005 panel is usually fine; a 1978 panel sometimes is not.
- Permit and inspection. St. Johns County or the city, depending on the address.
The quote itemizes each of those so you can see what is the equipment and what is the house.
Whole-system questions from St. Augustine's subdivisions
Can I replace just the outdoor unit on a 2005 Murabella house and keep the attic air handler?
Sometimes, and we will do it when the air handler is sound and the pairing is rated. More often the indoor coil is the same age, the same refrigerant generation, and a year or two from its own failure. Then the half-replacement buys a second attic job and a second invoice. We show both numbers.
Why does the quote include a thermostat when mine works?
Because staged and variable equipment needs a thermostat that can call for those stages. The 2005 thermostat on the wall only knows on and off, and it would run the new system like the old one. The controls are part of what you are buying.
What happens to the old system during a two-day changeover in July?
Most changeovers are done in a day. When the attic work runs long, we leave the house cooling overnight where possible, and when it is not possible we say so before we start, not after the old unit is on the truck.
Does a complete system in Davis Shores come with the elevated stand or is that extra?
It is on the quote for any flood-zone address, itemized so you can see it. We will not set a new system on the slab in a neighborhood that floods a dozen times a year.
Builder-grade system from the boom years?
Free estimates on complete systems. We'll quote the half-measure too, so you can compare.