What a tired package unit costs a Blanding Boulevard storefront every month, and the three questions that follow

The monthly cost of keeping the old cabinet running

Here is the arithmetic without invented precision. A package unit from the late 1990s or early 2000s on a Blanding Boulevard storefront, a Fleming Island office or a manufactured home outside Middleburg runs at roughly half the efficiency of what replaces it. Through a cooling season that lasts from late May into late September with highs around 91, that gap is the difference between a utility bill you budget for and one you dread. Add a service call or two a summer for a capacitor or a contactor, the refrigerant top-off on a slow leak, and the afternoon the shop had to close because the compressor quit, and the old unit is costing a payment every month already. The question is only whether that payment buys a new unit or props up the old one.

Once an owner sees it that way, the same three questions come next.

Will the tenants hear it through the ceiling?

A rooftop package unit sits directly above the space it serves, so noise travels straight down. Older single-stage units slam on and off; a modern two-stage or variable-capacity Lennox cabinet starts softly, runs at low speed most of the day and is noticeably quieter inside the building below. On a residential slab install, the cabinet sits beside the house rather than in a garage or attic, which is one reason manufactured-home owners in Middleburg and Clay Hill often say the new unit is the first one they could not hear from the bedroom.

Can one cabinet dry a Clay County building in August?

Yes, if it is sized by load rather than by the tonnage stamped on the old unit. The humidity complaint in package-unit buildings almost always traces to oversizing: the unit satisfies the thermostat in ten minutes and shuts off before the coil has pulled much moisture out. Two-stage cabinets fix this by running longer at lower output. On a manufactured home, the second half of the humidity answer is under the floor: a torn or disconnected crossover duct pulls damp crawlspace air into the system, and we replace it with the unit.

What comes out of the vents, and what should

A package unit has one filter location, at the return inside the building or at the cabinet, and it is the only air cleaning most of these systems ever get. A new installation is the moment to upgrade from a one-inch throwaway to a deeper media filter, add ultraviolet treatment at the coil if the building has a musty history, and seal the duct connections at the curb, where most rooftop systems leak. For a shop or clinic with customers coming in off a hot parking lot all day, cleaner, drier supply air is the difference people notice without knowing why.

Price a package unit replacement

Where package units belong around Orange Park

• Small commercial along Blanding, Kingsley and US 17. Rooftop units on curbs, served by crane, usually two to four per building.
• Manufactured and modular homes in Middleburg, Clay Hill and the lakes region. Slab-mounted heat pump cabinets with a crossover duct beneath the floor.
• Older homes with no indoor space for an air handler, including some of the small block houses on the original town streets.
• Buildings in flood-prone spots near Black Creek, where lifting one outdoor cabinet above the 2017 high-water line is simpler than protecting two pieces of equipment.

Cook’s installs Lennox packaged heat pumps, gas-electric and cooling-only units, handles the crane, the curb adapter and the electrical, and services every brand already up there. Financing with low monthly payments is available on new equipment. Ask about current utility and manufacturer incentives; commercial programs differ from the residential ones, and which apply to a given address is something we confirm [[CONFIRM WITH JERRY]].