The Coleman 7945‑546 Transformer is a genuine OEM 115VAC to 24VAC control transformer designed for Coleman, York, Evcon, Luxaire, and Fraser‑Johnston furnaces. Rated at 15VA, this transformer supplies low‑voltage power to thermostats, gas valves, fan relays, ignition controls, and other furnace control circuits.

Built to original Coleman specifications, the 7945‑546 provides reliable control voltage and is commonly used in older DGAT, DGPT, DLAS, and 7900‑series furnace platforms. When the original transformer fails due to low‑voltage shorts, overheating, or age, this OEM replacement restores proper control circuit operation and dependable furnace performance.

Includes a 1‑Year Warranty for added peace of mind.

 Cross‑Reference (Technician Binder Card Format)

Direct OEM

• 7945‑546
• S1‑7945‑546
• Coleman OEM 24V Transformer

Transformer Specifications

• Primary Voltage: 115 VAC
• Secondary Voltage: 24 VAC
• VA Rating: 15 VA
• Frequency: 50/60 Hz
• Application: Furnace Control Transformer
• Warranty: 1 Year

Compatible Furnace Series

• 4066 Series
• 4084 Series
• 7945 Series
• 7956 Series
• 7966 Series
• 7970 Series
• 7975 Series
• 7995 Series
• DGAT (056‑095)
• DGPT (056‑066)
• DLAS (056‑075)

Compatible Brands

• Coleman
• York
• Evcon
• Luxaire
• Fraser‑Johnston

Technician Notes

• Powers thermostat and low‑voltage furnace controls.
• Designed for older Coleman mobile‑home and manufactured‑housing furnaces.
• Always inspect for low‑voltage shorts before replacing.
• Verify 24VAC output after installation.
• Check thermostat wiring, gas valve coil, and relay circuits if transformer failure is repeated.

Common Symptoms of Failure

• No thermostat power
• Furnace completely inoperative
• No 24V control voltage
• Blown transformer winding
• Intermittent control operation
• Gas valve not energizing