HVAC Workbench

HVAC Coil Replacements: Solenoid Valve, Fan Motors, and Transformer Coil Compared

Four HVAC coil replacements from $24.99 to $179.98: a Carrier solenoid valve coil, two fan coil motors, and a used transformer coil. See which one matches your repair.

Last updated Aug 17, 2026

Deciding which coil part your HVAC system needs can be tricky. A failing solenoid valve coil may prevent refrigerant or fluid from flowing, a worn fan coil motor can stop airflow, and a damaged transformer coil can cut power to the control circuit. The four replacement parts below cover those very different jobs, with listed prices from $24.99 to $179.98. The right choice comes down to the part that actually failed and the style of replacement you want: new, multi-speed, or used-and-ready-to-match.

Quick Take

  • Carrier SHF-4-10FA4 Solenoid Coil Valve ($84.99) is the only solenoid valve coil here, a new 24VAC 50/60Hz part for a Carrier-style valve.
  • HVAC Fan Coil Motor Replacement ($82.28) is a new fan coil motor described as universal fitment, with a 3-Speed label in the title.
  • Century DB6502V1 Fan Coil Air Conditioner Motor ($179.98) is the highest-priced pick and the only one described as a PSC motor with an included run capacitor, made for fan-coil and air-conditioner duty.
  • HVAC Transformer Coil Laminated Core ($24.99) is the lowest-priced pick: a used transformer coil with a laminated steel core and four terminals.

Listed-Price Comparison

ProductListed PricePrice BarBest For
Carrier SHF-4-10FA4 Solenoid Coil ValveUSD 84.99New 24VAC solenoid valve coil with a specific model number
HVAC Fan Coil Motor ReplacementUSD 82.28New universal-fit fan coil motor replacement
Century DB6502V1 Fan Coil Air Conditioner MotorUSD 179.98Multi-speed PSC fan coil motor with supplied capacitor
HVAC Transformer Coil Laminated CoreUSD 24.99Used transformer coil with mounting bracket included

Decision Matrix

  • If the component you need is a solenoid coil for a valve, the Carrier SHF-4-10FA4 is the one with a model number and interchange part number.
  • If the repair is for a fan coil motor and you want a new motor with universal fitment, the $82.28 HVAC Fan Coil Motor Replacement is the lower-priced motor.
  • If you prefer a fan coil motor made for air-conditioner/fan-coil duty with an included run capacitor, the $179.98 Century DB6502V1 fits that role.
  • If the failure is in the transformer coil and you are comfortable with a used, as-photographed part, the $24.99 HVAC Transformer Coil is the lowest-priced option.

Carrier SHF-4-10FA4 Solenoid Coil Valve

Carrier HVAC SHF-4-10FA4 Solenoid Coil Valve 24VAC 50/60Hz Replacement

The Carrier SHF-4-10FA4 is a new solenoid coil valve rated for 24VAC at 50/60Hz. It is the only solenoid valve in this group, and it carries a specific model number plus interchange part number 2245285052, which makes it easier to identify when you are matching a replacement. The product description focuses on precise control of fluid or gas flow in HVAC equipment and says it is built for commercial and residential applications. At USD 84.99, it is in the middle of the price range. The limitation is that it is a coil for a valve, not a motor or transformer, so it will only help if the solenoid valve is the part that failed.

HVAC Fan Coil Motor Replacement

HVAC Fan Coil Motor Replacement | 1/8 HP | 1075 RPM | 3-Speed

The HVAC Fan Coil Motor Replacement is positioned as a new, universal-fit motor, and it is also labeled a performance part. The title highlights a 3-speed fan coil motor, which is useful when you need a straightforward replacement for a fan coil blower. However, the description lists a different set of specifications for horsepower, RPM, and speed count than the title, so you will want to compare the motor body and shaft to the original part before ordering. At USD 82.28, it is very close in price to the Carrier solenoid coil. Choose this one if the broken part is a fan motor and you want a new, universal-fit option rather than a used part.

Century DB6502V1 Fan Coil Air Conditioner Motor

Century DB6502V1 Fan Coil Air Conditioner Motor HVAC Replacement

The Century DB6502V1 Fan Coil Air Conditioner Motor carries the highest listed price in this group at USD 179.98. It is a new PSC motor described as multi-speed, with a resilient ring mount, long lead wires, and an included run capacitor, which can simplify the wiring side of a replacement. The listed voltage is 208-230V and the type is central air conditioner. The limitation is that this motor is aimed at a specific fan-coil and air-conditioner air-over application rather than being described as universal fitment, so it is not positioned as a one-size-fits-all motor. Choose it when you want a motor that comes with the capacitor and matches that application.

HVAC Transformer Coil Laminated Core

HVAC Transformer Coil Laminated Core 4 Terminal Replacement Part Unknown Brand

The HVAC Transformer Coil Laminated Core is the least expensive pick at USD 24.99. It is a used transformer coil with a laminated steel core, four terminals, and a mounting bracket, and it was removed from working equipment. Because it is used, it is described with cosmetic signs of prior use such as light rust and normal wear, and it is sold exactly as pictured. The title describes the brand as unknown, and the description says to compare photos, dimensions, and terminal configuration with your original part before purchasing. Choose it if you want the lowest-priced option and are comfortable with a used, as-shown part.

Final Recommendation by Use Case

  • Need to replace a solenoid valve coil in a 24VAC HVAC valve? Go with the Carrier SHF-4-10FA4 at USD 84.99.
  • Need a new fan coil motor with universal-fit positioning? The USD 82.28 HVAC Fan Coil Motor Replacement is the lower-cost motor choice.
  • Want a fan coil motor with an included run capacitor and 208-230V operation for central air-conditioner duty? The USD 179.98 Century DB6502V1 is the one.
  • Need a transformer coil and prefer to spend the least? The USD 24.99 HVAC Transformer Coil Laminated Core is the lowest-priced option.
Products in this article
Carrier HVAC SHF-4-10FA4 Solenoid Coil Valve 24VAC 50/60Hz ReplacementUSD 84.99View on eBayHVAC Fan Coil Motor Replacement | 1/8 HP | 1075 RPM | 3-SpeedUSD 82.28View on eBayCentury DB6502V1 Fan Coil Air Conditioner Motor HVAC ReplacementUSD 179.98View on eBayHVAC Transformer Coil Laminated Core 4 Terminal Replacement Part Unknown BrandUSD 24.99View on eBay
Carrier HVAC SHF-4-10FA4 Solenoid Coil Valve 24VAC 50/60Hz ReplacementUSD 84.99View on eBayHVAC Fan Coil Motor Replacement | 1/8 HP | 1075 RPM | 3-SpeedUSD 82.28View on eBayCentury DB6502V1 Fan Coil Air Conditioner Motor HVAC ReplacementUSD 179.98View on eBayHVAC Transformer Coil Laminated Core 4 Terminal Replacement Part Unknown BrandUSD 24.99View on eBay

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