AC Replacement in Taunton

A short cooling season is what makes the age of an air conditioner misleading in Taunton. A system that cools for ten or twelve weeks a year puts on a fraction of the running hours the same model accumulates in the south, so it can still be cooling years after the date on the equipment suggested it would stop.

What arrives first in a climate like this is the refrigerant question rather than wear. A system installed before about 2010 may be charged with R-22: manufacture of new R-22 equipment stopped in 2010, and production and import of the refrigerant itself ended in 2020. A system charged with R-410A sits differently, because it stays lawful to run, service, repair and recharge, and no end date is attached to that. What did change is what a new system arrives charged with: since 1 January 2025 new residential equipment is no longer manufactured or imported factory-charged with R-410A, and what ships now is charged with R-454B or R-32 instead.

The second machine is usually standing in the same cabinet as the first. Where a furnace and the indoor coil share one, they almost always went in on the same day, and a changeout that replaces one and leaves the other means a contractor opens that cabinet twice. A changeout usually takes about one day, and a heating climate leaves eight months in which that day is not an emergency.

On most days the summer air in Taunton is dry enough that the coil works on temperature alone. What water the coil does take out is mostly water the house made — showers, cooking, laundry, the people in the rooms — rather than water drawn in from outside, and that load does not rise and fall with the weather. So the size of a replacement here follows the house: its volume, its windows, what the sun does to it in the afternoon, and how it is lived in. One consequence is worth knowing before a contractor says it out loud — a correctly sized replacement sometimes comes out below the number on the equipment it replaces, because nobody measured when that one went in. Smaller is not a downgrade: a system matched to the house runs longer and holds the temperature steadier than one that overshoots and stops.

Because the same outdoor unit serves either one, the choice between an air conditioner and a heat pump arrives with the replacement rather than later. The nights that decide it are the ones below 20°F, and there are enough of them here to plan for: a heat pump hands the work to electric resistance strips once the outdoor temperature drops far enough, and the electric bill in a cold snap follows whichever of the two is doing the work. The temperature at which the strips take over is a property of the installed system rather than of heat pumps, and a contractor can say what it will be beforehand. Ask what will be carrying the house on the coldest nights — strips, an existing furnace, or a second stage — and put the question before the contractor picks the model.

Of everything on the shelf, the sealed can with a gauge is what people reach for first, and it deserves an honest answer. A system low on refrigerant does cool badly, and putting refrigerant into it does make it cool better for a while — that part is real. What the can cannot do is find the hole: refrigerant is not used up, so a system that is low is leaking, and the gap between cans gets shorter every time. The cans on the shelf beside the motor oil are charged for car systems, which use a different refrigerant from a home air conditioner, and the ones with a sealant in them add a second problem to the first — sealant can set in the metering device, and it fouls the recovery machine a technician has to connect.

The hard-start kit also does what it says, which is exactly what makes it misleading. It adds starting torque to a compressor that is struggling to start, and it can carry a system through a hot weekend. Why the compressor was struggling is what it leaves untouched: worn bearings, tired windings, a failed run capacitor, or a voltage problem at the unit. A kit that has sat on a compressor for two seasons is propping up a machine that has been reporting something for two seasons.

A new filter is the one item on that shelf that is not a repair pretending to be one, and it is worth being exact about what it reaches. A blocked filter starves the coil of air, the coil ices, and a coil that ices repeatedly sends liquid refrigerant back to the compressor — a real failure with an avoidable cause, and a clean filter removes that cause. What it does not reach is what has already happened: a compressor that has taken liquid, a coil that is iced now, or a charge that is low because the system is leaking. Ice that returns on a clean filter is not a filter problem at all, and at that point the filter has told you what it can.