STC4257 – TEMPERATURE FUSE LINK (L257°)
Temperature fuse link, opens at 257°F (125°C). 15 Amp rated. One-time-use thermal safety device — if it’s blown, the system overheated and needs the fuse link replaced.
Walk in. We test every part free at the counter. Open to homeowners, contractors, and multifamily — no account or minimum order.
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Ten departments, organized the way our counter is. Every category is on the shelf today.
Bring your old part. We'll diagnose it, find the replacement, and bench-test the new one at the counter before you leave — so you only make one trip.

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Temperature fuse link, opens at 257°F (125°C). 15 Amp rated. One-time-use thermal safety device — if it’s blown, the system overheated and needs the fuse link replaced.

16″ x 25′ insulated flex duct (R8 fiberglass insulation). Standard residential HVAC flexible ductwork for supply air runs. Quietflex brand.

16″W x 25″T return air filter grille. Holds a standard 1″ filter. Removable hinged face for easy filter changes. White steel, mounts on wall or ceiling.

Hydro-Balance H-BD01 blue alkaline condenser coil cleaner, 1-gallon concentrate. Sodium-based foaming formula for regular outdoor coil maintenance. Non-acid.

50M56U-801 aftermarket control board for Lennox single-stage furnaces. Replaces 103085 series, 100973 series, and many Lennox/Ducane/Armstrong boards.

Insulated filter plenum, 20″ x 25″ opening, door on 20″ side, 30″ long. Attaches to furnace or air handler. Holds up to a 4″ filter. R-6 lined.

ArmaFlex pipe insulation, 7/8″ ID x 3/4″ wall, 6-foot stick. Fits 7/8″ copper suction line. Prevents condensation and energy loss on refrigerant lines.

Tubing cutter for up to 2-1/2″ OD. Quick-action ratcheting design cuts copper, aluminum, and plastic tubing. Handles large line sets and drain lines.

Aftermarket inducer assembly for Goodman furnaces. 115V, 3000 RPM, 1/40 HP. Replaces B4059000S. Complete assembly with motor, wheel, housing, and gasket.

1 HP Genteq Evergreen variable-speed ECM blower motor. 120/240V dual voltage, 4-pin control. Direct drop-in for Genteq model 3.0 ECMs. Largest HP in the Evergreen VS line.