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    Replacement & installation · East Norwich, NY · August 2026

    Corroded Air Handler Out, New Central AC In: East Norwich

    A new Trane 3-ton condenser outside and a new Goodman air handler inside, replacing a corroded indoor unit.

    Before
    Before: the old air handler with its panel off. The coil and the cabinet base show heavy corrosion and wear.
    After
    After: the new Trane 3-ton condenser, level on a new composite pad with an insulated line set. The unit at left wasn't part of this job.

    Photos are lightly enhanced for clarity. The work shown is as installed or serviced.

    The problem

    The indoor half of this home's central air system was an older Heat Controller air handler, model AHG48-0A. With the front panel off, the evaporator coil and the cabinet base were visibly corroded, and the inside of the unit was dirty and worn. The homeowner chose to replace the whole split system, both the indoor air handler and the outdoor condenser.

    Our solution

    Outdoors, we set a new Trane 3-ton condenser on a new 36x36 composite pad. Indoors, a new Goodman air handler replaced the corroded Heat Controller unit, with new insulated supply and return plenums and an air handler plenum adapter kit. The connecting components were all new: a pre-insulated 50 ft refrigerant line set (3/8" x 3/4"), a 60A fused disconnect, a 10 AWG electrical whip, a dedicated 240V double-pole breaker and 18/8 thermostat wire. At the air handler we added a galvanized auxiliary drain pan and a condensate safety float switch. We then removed and disposed of the old equipment, commissioned the system and walked the homeowner through the new setup.

    The result

    Outside, the new Trane condenser sits level on its new composite pad, and the insulated line set runs neatly into the wall. Inside, a new Goodman air handler has replaced the corroded unit, and a float switch is in place to shut the system down if the condensate drain ever backs up. The system was commissioned before handoff, and the homeowner got a walkthrough of the new equipment.

    Installed

    • Trane 5TTR3036A1000AA, 3-ton outdoor condenser (installed)
    • Goodman AMST42BU1400 air handler, indoor (installed)
    • Heat Controller, Inc. AHG48-0A air handler (removed)

    Highlights

    • Corroded Heat Controller air handler replaced with a new Goodman air handler
    • New Trane 3-ton condenser set level on a new 36x36 composite pad
    • All-new pre-insulated 50 ft refrigerant line set, neatly routed into the wall
    • New 60A fused disconnect, 10 AWG electrical whip and dedicated 240V double-pole breaker
    • Condensate safety float switch and galvanized auxiliary drain pan to help protect against drain overflows
    • Old equipment hauled away, system commissioned, homeowner walkthrough

    Scope of work

    1. 01Removed the old Heat Controller air handler and disposed of the old equipment
    2. 02Installed a new Trane 3-ton outdoor condenser
    3. 03Set the condenser on a new 36x36 composite pad that levels and supports the unit
    4. 04Installed a new Goodman air handler indoors
    5. 05Fitted new insulated supply and return plenums and an air handler plenum adapter kit
    6. 06Ran a new pre-insulated 50 ft refrigerant line set (3/8" x 3/4")
    7. 07Installed a new 60A fused outdoor disconnect and a 10 AWG electrical whip to the condenser
    8. 08Installed a dedicated 240V double-pole breaker
    9. 09Ran new 18/8 thermostat wire
    10. 10Added a condensate safety float switch and a galvanized auxiliary drain pan
    11. 11Commissioned the new system
    12. 12Walked the homeowner through the new system

    More photos from the job

    • Rating plate on the outgoing Heat Controller air handler, model AHG48-0A.
    • Another angle: the insulated line set runs cleanly into the wall behind the new condenser.

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