AC Installation & Replacement in Greenwich, CT

Is your air conditioner worn out, or does part of the house still have no cooling at all? We handle air conditioning installation and replacement across Greenwich, CT, including central AC and ductless mini-split systems, and we will say so plainly when a repair would serve you better than new equipment.

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THE INSTALL PROCESS

How AC Installation Works

Swapping an existing central system on sound ductwork is simpler than cooling a house that never had AC. New ductless zones or duct runs take more planning, since line sets, wiring and condensate lines all need a route.

Step 1

Survey the House

We walk the house, noting rooms that run hot, the age of the existing equipment, the condition of any ductwork, and the electrical panel, and take measurements for a load calculation.

Step 2

Size and Select the System

With the load numbers in hand, we talk through your options: a new central system on existing or upgraded ducts, ductless mini-split heads for rooms ducts cannot reach, or a mix of both, and the capacity each area needs.

Step 3

Install the Equipment

Any old condenser and coil are disconnected after the refrigerant is recovered. The new outdoor unit is set level on a pad or wall bracket, the indoor coil or mini-split heads are mounted, line sets and wiring are run, and the system is pressure-tested and evacuated before charging.

Step 4

Start Up and Set the Thermostat

Once the system is running, we check temperatures, airflow and condensate drainage, then set up the thermostat or mini-split remote. You will learn how to change the filter, where the outdoor disconnect is, and what the schedule settings do.

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NEW AC SYSTEMS

Air Conditioning Installation for Greenwich Homes

Many Greenwich houses were built long before central air, and plenty still heat with a boiler and radiators, so there is no ductwork to reuse. In those homes, a ductless mini-split system is often the cleanest answer: a compact outdoor unit feeds wall or ceiling heads through a small opening, with no ducts to snake through finished walls. Mini-splits also suit additions, sunrooms, finished attics and over-garage rooms that the main system never reached.

Homes with a forced-air furnace usually have ducts that can carry cooling, but they still need a close look. Ducts designed only for heating can be too small for cooling airflow, and runs through a hot attic need sealing and insulation to prevent sweating. The indoor coil must match the new outdoor unit, and the furnace blower has to move enough air across it. Sometimes a few duct changes make central AC work far better than a bigger unit would.

Placement matters on tighter in-town lots and along the water. The condenser needs open airflow, a spot away from bedroom windows, and, near the shoreline, some shelter from salt spray. We install air conditioning throughout Greenwich, including Cos Cob, Old Greenwich, Riverside, Byram and Glenville, and in neighboring Stamford.

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REPAIR VS. REPLACEMENT

Should You Repair or Replace Your AC?

An older air conditioner is not automatically a lost cause. A repair often makes sense when the compressor and coils are sound and a single component has failed, such as a capacitor, contactor, fan motor, thermostat, or a clogged condensate line. Our AC repair and maintenance page describes those fixes and the tune-up process.

Replacement deserves a serious look when the system is around 15 years old or more, when repair calls have become a yearly event, or when it still runs on R-22, an older refrigerant that has been phased out and is increasingly scarce. Uneven rooms and a sticky, humid feel that no repair has solved also point toward new equipment.

Whichever way you lean, you will see what each option involves before anything is scheduled, and you make the call. If the system has quit on a hot night, or water is dripping from an indoor unit onto a ceiling, shut the system down and call our emergency HVAC service line.

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WHEN TO REPLACE

Signs Your Air Conditioner Needs Replacing

One of these on its own may be fixable. When two or three show up together, it usually makes sense to start planning a new system before the next heat wave.

Repeated Refrigerant Leaks

Topping off refrigerant only treats the symptom. When an older coil leaks in several places, or the same leak returns every summer, replacing the coil and condenser is often the more sensible path.

Comfort and Humidity Problems

Rooms that never cool evenly, a damp feel on muggy days, or a unit that runs nonstop can mean the system was sized wrong from the start or has simply worn out.

Age and Outdoor Wear

Many central air conditioners last roughly 12 to 15 years, and salt air near the shoreline can shorten that. Corroded condenser fins, a noisy compressor and a unit needing repairs more often all signal wear.

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Talk with us about central AC or ductless installation in Greenwich.

INSTALLATION QUESTIONS

AC Installation FAQs

Clear answers about air conditioning installation, ductless mini-splits, sizing, thermostats, and replacing an older system in Greenwich, CT.

Usually not. The outdoor condenser and the indoor coil are designed to work as a matched pair, and newer systems use different refrigerants than older ones, so pairing a new condenser with an old coil can hurt efficiency and reliability. In most cases both are replaced together. The copper line set between them can sometimes be reused if it is the right size and in good condition.

We base the size on a load calculation, not on the old unit’s label or the square footage alone. Insulation, window area, ceiling height, shade, and how many people live in the house all affect it. An oversized unit cools quickly but leaves the air damp, and an undersized one runs constantly.

Often, yes. In a colonial or Victorian heated by radiators, mini-splits add cooling without tearing into plaster, and each indoor head holds its own temperature. Most mini-splits are heat pumps, so they can also take the chill off in spring and fall while the boiler stays off. In a large house with many rooms, a ducted air handler in the attic may suit better, so we compare both.

Most new central systems work with a standard programmable or smart thermostat, and we set it up and match its wiring to the equipment during installation. Some variable-speed systems work most efficiently with a matching control, which the technician will point out. Ductless mini-splits usually come with a handheld remote or wall controller, and many can connect to a phone app.

New air conditioning equipment in Greenwich may need a town permit because the job involves electrical work and refrigerant lines, so raise the question when you book. If your home is a condominium or part of an association, check its rules on where outdoor units can go and on new wall openings before work begins.

Turn the system off at the thermostat, and if the indoor unit is dripping, set a bucket or towels under it. Keep blinds closed and run ceiling fans to slow the heat build-up. Then call (475) 410-8119 so a technician can see whether a repair will carry you through the season or replacement should move up.

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