ICP Oval Run Capacitor for WFMR070A036B1 — 5 MFD 370V Blower | Ships Today

Overview

This OEM oval run capacitor (part number 1170643, STRAP CAPACITOR OVAL S) is the factory blower-motor run capacitor for the ICP/Heil/Tempstar WFMR070A036B1 gas furnace. A run capacitor stores and releases an electrical charge to keep the blower motor running smoothly and efficiently. Rated at 5 MFD and 370 volts, it provides the continuous phase shift the PSC blower motor needs to start and maintain torque. When a capacitor weakens or fails, you'll typically see a blower that hums but won't spin, a motor that overheats and trips on thermal overload, intermittent airflow, or higher energy bills. Replacing a tired capacitor is one of the fastest, lowest-cost ways to restore proper furnace airflow.

Specifications

Compatibility

Directly fits the ICP/Heil/Tempstar/Comfortmaker WFMR070A036B1 furnace and many related WFMR-series air handlers and furnaces using the same blower motor. Always confirm the MFD and voltage rating stamped on your old capacitor before ordering.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter; capacitors can hold a dangerous charge.
2. Access — Remove the furnace blower compartment service panel.
3. Document — Photograph all wire connections before disconnecting.
4. Remove — Discharge the old capacitor across its terminals with an insulated resistor, then unclip the mounting strap and pull the leads.
5. Install — Mount the new oval capacitor in the strap and reconnect the leads exactly per your photo.
6. Test — Restore power and confirm the blower starts promptly and runs quietly.

Signs You Need a Replacement

• Blower motor hums but will not start spinning.
• Motor starts slowly or overheats and trips on overload.
• Bulged, leaking, or swollen capacitor top.
• Weak or intermittent airflow from the registers.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.