Fenwal
Browse Fenwal replacement parts at Furnace Part Source, including available ignition modules, ignition controls, HSI controls, temperature controls, wire harnesses, thermoswitch controllers, and related HVAC service components. Match the exact Fenwal part number, control type, voltage, temperature range, wiring connections, equipment model, and application before purchasing to help confirm the correct replacement.
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Fenwal 35-665721-101 Ignition Control
Fenwal
MSRP: $300.71Now: $232.37Fenwal 35-665721-101 Ignition Control FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order RequirementsMSRP: $300.71Now: $232.37 -
Fenwal 35-665725-121 Ignition Control
Fenwal
MSRP: $271.97Now: $210.16Fenwal 35-665725-121 Ignition Control FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Every time No Minimum Order RequirementsMSRP: $271.97Now: $210.16 -
Fenwal 35-665735-225 Ignition Module
Fenwal
MSRP: $262.85Now: $199.13Fenwal 35-665735-225 Ignition ModuleMSRP: $262.85Now: $199.13 -
Fenwal 35-665904-225 AUTO IGNITION CONTROL
Fenwal
MSRP: $262.85Now: $199.13Fenwal 35-665904-225 AUTO IGNITION CONTROL Must be ordered in multiples of 4 FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts -...MSRP: $262.85Now: $199.13 -
Fenwal 35-665913-119 24V,15SEC PP IGNITION MODULE
Fenwal
MSRP: $271.95Now: $210.15Fenwal 35-665913-119 24V,15SEC PP IGNITION MODULE FurnacePartSource.com CommitmentMSRP: $271.95Now: $210.15 -
Fenwal 35-665938-215 120/240V HSI Control Board
Fenwal
MSRP: $300.71Now: $232.37Fenwal 35-665938-215 120/240V HSI Control BoardMSRP: $300.71Now: $232.37 -
Fenwal 35-671922-151 Ignition Control Board
Fenwal
MSRP: $535.34Now: $413.67Fenwal 35-671922-151 Ignition Control Board FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts – Every time No Minimum Order...MSRP: $535.34Now: $413.67 -
Fenwal 35-679652-551 Ignition Control
Fenwal
MSRP: $535.34Now: $413.67Fenwal 35-679652-551 Ignition ControlMSRP: $535.34Now: $413.67 -
Fenwal 35-679655-551 Ignition Control
Fenwal
MSRP: $535.34Now: $413.67Fenwal 35-679655-551 Ignition Control 24 VAC Proven HSI w/Blower Relay FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts -...MSRP: $535.34Now: $413.67 -
Fenwal 35-679923-151 IGNITION MODULE
Fenwal
MSRP: $562.22Now: $425.93Fenwal 35-679923-151 IGNITION MODULE Must be ordered in multiples of 4. FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts -...MSRP: $562.22Now: $425.93 -
Fenwal 35-703914-009 Ignition Control Board
Fenwal
MSRP: $383.87Now: $296.63Fenwal 35-703914-009 120 VAC Microprocessor Based, Direct Spk Ignition Control FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts -...MSRP: $383.87Now: $296.63 -
Fenwal 35-703917-007 IGNITION CONTROL
Fenwal
MSRP: $383.87Now: $296.63Fenwal 35-703917-007 IGNITION CONTROL FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...MSRP: $383.87Now: $296.63 -
Fenwal 35-703920-009 Ignition Control Board
Fenwal
MSRP: $383.87Now: $296.63Fenwal 35-703920-009 Ignition Control Board FurnacePartSource.com CommitmentMSRP: $383.87Now: $296.63 -
Fenwal 35-704600-001 DSI Module
Fenwal
MSRP: $400.06Now: $309.14Description 120vDSI,4secTFI,NoPP,1tryMSRP: $400.06Now: $309.14 -
Fenwal 35-704600-501 Ignition Control
Fenwal
MSRP: $291.80Now: $221.06Fenwal 35-704600-501 Ignition Control 120 VAC Isolated Gas Valve RelayMSRP: $291.80Now: $221.06 -
Fenwal 35-704903-001 Control
Fenwal
MSRP: $197.98Now: $152.99Fenwal 35-704903-001 Control 120vDSI,4secTFI,NoPP,1tryMSRP: $197.98Now: $152.99 -
Fenwal 35-705500-003 120vDSI,7secTFI,NoPP,1try
Fenwal
MSRP: $278.44Now: $210.94Fenwal 35-705500-003 120vDSI,7secTFI,NoPP,1try FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $278.44Now: $210.94 -
Fenwal 35-705500-105 120vDSI,10secTFI,15sPP,1try
Fenwal
MSRP: $317.79Now: $245.56Fenwal 35-705500-105 120vDSI,10secTFI,15sPP,1try FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order RequirementsMSRP: $317.79Now: $245.56 -
Fenwal 35-705500-501 Ignition Control Module
Fenwal
MSRP: $317.79Now: $245.56Fenwal 35-705500-501 Ignition Control ModuleMSRP: $317.79Now: $245.56 -
Fenwal 35-705500-505 Ignition Control Module
Fenwal
MSRP: $278.44Now: $210.94Fenwal 35-705500-505 Ignition Control ModuleMSRP: $278.44Now: $210.94
Fenwal Ignition Modules, Controls, and HVAC Replacement Parts
Fenwal replacement parts are commonly used in HVAC, furnace, heater, and control applications where the correct module or controller must match the original equipment requirements. This brand page may include ignition modules, ignition controls, HSI controls, temperature controls, thermoswitch controllers, wire harnesses, and related service components for compatible heating systems. Because many Fenwal controls are selected by exact part number, use the label on the existing component as the starting point whenever possible.
Choosing the Right Fenwal Control or Ignition Module
When replacing a Fenwal control, compare the full part number and application details before selecting a replacement. Important details may include voltage, ignition type, wiring terminals, timing sequence, lockout behavior, sensor or ignitor compatibility, temperature rating, mounting style, and equipment model. A Fenwal ignition module or controller may look similar to another unit but still require a different wiring layout or operating specification.
Using Fenwal Part Numbers and Equipment Details
Many Fenwal searches begin with a control number, module number, catalog reference, or cross-reference from the equipment documentation. Use the complete part number from the existing control and compare it with the product title and details on the listing. If the part label is worn or missing, check the furnace, heater, or equipment model number, service manual, wiring diagram, or parts list to help narrow the correct replacement.
Common Fenwal Parts and Applications
Available Fenwal parts may include ignition modules, HSI controls, temperature controllers, thermoswitch controls, wiring components, and control-related replacement parts. These components may be used in compatible furnace, heater, burner, and HVAC equipment where ignition control, temperature control, or system safety operation depends on the correct electrical component. Confirm the control type and application before purchasing so the replacement aligns with the system requirements.
Confirm Compatibility Before Ordering
Before ordering Fenwal replacement parts, review the original component label, equipment data plate, wiring diagram, and service documentation. Confirm the part number, voltage, ignition method, terminal layout, timing or control sequence, temperature rating, and equipment model. For ignition and control components, small differences in wiring or operating logic can affect compatibility, so verify the replacement against the system documentation before installation.