AC Installation in New Jersey

No, and this is the most common and most expensive misunderstanding in the trade. Oversized equipment short-cycles: it drops the temperature quickly, shuts off before it has removed humidity, and leaves a house that is cold and clammy. It also wears faster, because starting is what stresses a compressor.

Sometimes, and often you should not. Where there is an attic and a basement to run trunk lines through, ducting is feasible. In a finished pre-war house with radiators, it is expensive and destructive, and a ductless system usually delivers a better result for less money and less disruption.

Twelve to eighteen years inland with annual servicing. Near the shore, expect the shorter end — salt corrosion regularly takes shore condensers at eight to twelve years unless the coil was specified for it and rinsed regularly.

In most New Jersey municipalities, yes — mechanical and often electrical. Permits are the contractor's to pull, and a quote that skips them is not cheaper, it is incomplete. Unpermitted work also surfaces awkwardly at resale.

The current efficiency rating for cooling equipment, replacing the older SEER measure with a test method closer to real installed conditions. Higher is more efficient. Because the test changed, a SEER2 figure is not directly comparable with an older SEER number on your existing unit.

Often worth doing if both are of an age, because they share the indoor cabinet and the labor overlaps — doing them together costs less than doing them two years apart. It is also the natural moment to price a heat pump instead of both.

There is no answer from square footage alone, and any contractor who gives you one from that number is guessing. Insulation levels, window area and orientation, ceiling height, air-tightness and how many people live there all change the answer, and two 2,000 square foot houses in the same town can need meaningfully different capacity. Ask for a Manual J load calculation and to see the result.

A straightforward like-for-like changeover is usually a day. Two to three where venting changes, ductwork is modified, or a water heater needs re-venting after a condensing furnace moves off the shared flue. Ductless with several heads runs longer because each head needs its own line set. Permit and inspection steps can add calendar time even when the work itself is short.

It helps at sale more than it adds a line of value. Buyers and inspectors notice ageing equipment, and a system near end of life becomes a negotiating point. New efficient equipment removes that objection and is worth mentioning in a listing. Treat it as protecting the sale price rather than raising it.

It depends on what the building allows more than on what performs best. Many condos and townhouses have no route for ductwork and restrict what can be attached outside, which points at ductless or through-wall equipment. Check the rules and any alteration agreement before pricing anything — approval, not engineering, is usually the constraint.

Make sure they are quoting the same scope, because that is where the differences usually come from rather than the equipment price. Check each includes permits, disposal, any venting changes, electrical work, the thermostat, and — on a condensing furnace — what happens to the water heater on the old flue. A quote that is thousands cheaper has usually left something out rather than found a saving.

Compare three quotes for identical scope, and ask each what a load calculation produced. The signals that a number is inflated are: no load calculation, pressure to decide today, a large deposit, and reluctance to itemize. The signals it is too cheap are the same missing items — no permit, no disposal, no venting work.

Commonly, through contractors and manufacturers, and New Jersey has also offered zero-interest financing on qualifying efficiency work through state programs. Terms move from year to year, so ask what is current rather than assuming. If a heat pump is in scope, ask about the state route specifically — it is usually the better rate.

Two separate things: a manufacturer warranty on the equipment, and a labor warranty from the installer. Ask the length of each, and ask what conditions apply — most manufacturer warranties require registration within a window of installation and documented annual servicing thereafter, and both are enforced more often than people expect.