For most Florida properties, a heat pump — it covers cooling and heating in one system, and cooling is by far the dominant demand here. A furnace makes sense where the building already has natural gas service, where a larger home needs stronger temperature rise, in warehouses and industrial spaces, or for households relocating from colder climates who want the output they are accustomed to. We will assess the building and tell you which applies.

Because both errors are real. An oversized furnace short cycles — firing hard, satisfying the thermostat fast, shutting off, repeating — which wastes fuel and wears components. An undersized one runs constantly and still struggles to hold comfort on the coldest nights. A heating load calculation based on your property is what avoids both, and it is why we do not size from the label on the old unit.

A furnace needs a supply of air to burn fuel properly. Install one in a sealed or crowded closet without adequate combustion air and the burn becomes incomplete, which is both inefficient and unsafe. Verifying the supply is part of the installation, and it is a detail that gets skipped when equipment is squeezed into a space that was never assessed for it.

Sometimes, but it has to be assessed rather than assumed. Venting requirements depend on the equipment type and efficiency — a high-efficiency furnace vents differently from the unit it replaces, and reusing an incompatible vent is a serious safety error rather than a shortcut. Venting design is part of the installation for exactly this reason.

Usually, because of coordination rather than the mechanical work. Commercial furnace projects may involve permit coordination, inspection scheduling, and integration with existing building infrastructure. Planning those alongside the install is what keeps the project moving rather than stalling between trades.

An option where there is no gas service, and it removes the combustion side entirely — no venting, no combustion air, no carbon monoxide risk. The trade-off is running cost, since resistance heat is the expensive way to warm a building, and electrical capacity has to be verified because these systems draw heavily. For most gas-free Florida homes a heat pump beats an electric furnace on cost, which we will say directly.