Replacing Equipment That Has Stopped Performing
AC Replacement in Kyle for failing systems where correct sizing and duct compatibility determine the outcome
Older Austin-area homes, including many built in Georgetown and San Marcos during the rapid growth periods of the 1980s and 1990s, were fitted with ductwork sized to equipment standards that predate current efficiency and capacity ratings. When those systems reach the end of their service life, swapping in a same-size unit without checking duct condition and building load produces the same mismatches the original installation may have had, only with a new system carrying the problem. Extreme Texas Air replaces failing air conditioning systems for homes and businesses by sizing the replacement to both the actual building load and what the existing duct layout can carry, rather than defaulting to whatever came out.
When a customer requests a replacement quote, the process starts with inspecting the existing system and ductwork and running load calculations before any equipment is specified. If the duct system has connections that have separated, flex sections that have collapsed, or was originally undersized for the space, those conditions are identified at the quoting stage rather than discovered after the old equipment is removed. Once the quote is accepted, the crew pulls the old condenser and air handler, sets and connects the new equipment, and tests refrigerant charge and airflow before the job is complete. Manufacturer's warranty is available on qualifying equipment.
Request a replacement quote from Extreme Texas Air by calling (512) 256-5499 to arrange an on-site inspection of your existing system and ductwork.
Why Duct Condition Changes the Changeout Approach
A changeout is not simply lifting out one condenser and setting another in its place. The outdoor unit and the air handler work as a matched system, and both components must be compatible with each other and with the refrigerant line set connecting them. On properties where the previous system was installed before current refrigerant standards, the line set material and diameter may need to be evaluated before a replacement unit is connected to it, because mismatched line sets affect both efficiency ratings and compressor longevity.
After a correctly scoped changeout, the performance differences are specific and observable: the new system reaches the thermostat setpoint in a reasonable cycle without the extended run times that indicate an undersized unit, rooms that were consistently warmer than the rest of the house begin holding temperature, and the outdoor unit does not cycle on and off in rapid succession. Those are the indicators that the replacement was sized and connected correctly for the building it now serves.
Extreme Texas Air handles all phases of the changeout in-house: equipment removal, line set evaluation, ductwork adjustment where needed, and startup testing. The family-owned company has operated since 2014, and the owner's direct experience in the trade extends more than two decades, which means the technician making the sizing recommendation has seen the downstream effects of both over- and under-sized replacements on real properties.
Answers About How Replacement Work Is Done
The questions below address the replacement process itself, covering what gets inspected, how equipment is specified, and what property owners should expect once the new system is running.
What happens to the existing ductwork during a changeout?
The ductwork is inspected for collapsed sections, disconnected joints, and undersized runs before the replacement unit is specified, because a new system connected to a compromised duct layout will not deliver its rated airflow to the living spaces.
How is the replacement unit size determined rather than just matching what came out?
Load calculations account for the home's current insulation, window area, ceiling height, and any additions or modifications since the original equipment was installed, so the replacement is sized to the building as it exists now rather than as it was when the previous system was selected.
Why does the refrigerant line set matter when replacing older equipment?
Systems installed before the transition away from R-22 may have line sets that are a different diameter than what current equipment requires, and connecting a new high-efficiency unit to an incompatible line set restricts refrigerant flow and can void the equipment warranty.
What does testing before leaving the property confirm?
The technician verifies that refrigerant pressures are within the manufacturer's operating range, that supply air temperature at the registers reflects the correct delta-T for the system, and that the air handler and outdoor unit are communicating correctly through the thermostat wiring.
How do you tell if a replacement is performing correctly in the first days of operation?
The system should complete full cooling cycles that bring the space to setpoint without short-cycling, the outdoor unit should run without laboring sounds, and condensate should be draining normally from the air handler, which confirms the evaporator coil is operating at the correct temperature.
Extreme Texas Air also performs AC replacement and changeouts in Buda, San Marcos, Dripping Springs, and Lockhart. Call (512) 256-5499 to set up an inspection and get a quote based on your current equipment and duct conditions.