What MFD capacitor do I need for my ICP AC?

The correct replacement for ICP model WFMR045A024B1 — 7.5 MFD 370V Oval | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your ICP equipment which lists the model number WFMR045A024B1 — 7.5 MFD 370V Oval | Ships Today.

My AC hums but will not start. What part do I need?

An AC that hums but will not start is the classic symptom of a failed capacitor. The capacitor provides the electrical boost needed to start the compressor and fan motors. When it fails, you hear the hum of the motor trying to start but it cannot overcome inertia. Other symptoms include the fan spinning slowly, the AC cycling on and off rapidly, or a visibly swollen or leaking capacitor. Replacement cost: $15 to $80 for the part, DIY in 30 minutes.

ICP

ICP Single Run Capacitor for WFMR045A024B1 — 7.5 MFD 370V Oval | Ships Today

Name: ICP Single Run Capacitor for WFMR045A024B1 — 7.5 MFD 370V Oval | Ships Today
Brand: ICP
SKU: 1170643
Price: 18.20 USD
Availability: InStock

SKU: 1170643 Brand: ICP

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Overview

This OEM oval run capacitor (part #1170643, STRAP CAPACITOR OVAL S) provides the continuous phase shift the blower motor needs to run efficiently in your ICP/Tempstar/Heil WFMR045A024B1 gas furnace. Rated at 7.5 MFD and 370V, it mounts with the included strap bracket. A run capacitor stores and releases energy on every AC cycle to keep the motor windings energized; when it weakens or fails the blower struggles to start, hums, overheats, or stops entirely. Replacing a bulging or out-of-tolerance capacitor restores full airflow and protects the motor from burnout.

Specifications

Spec	Value
Part Number	1170643
Type	Single (Run) Oval Capacitor
Brand	ICP / Tempstar / Heil
Capacitance	7.5 MFD
Voltage	370V
Mounting	Oval, strap bracket
Fitment	OEM

Compatibility

Engineered for the ICP WFMR045A024B1 furnace blower circuit and shared across many Tempstar, Heil, Comfortmaker, and Day & Night furnaces using the same blower motor. Always confirm the MFD and voltage rating stamped on your existing capacitor before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter. Capacitors hold a charge—discharge across the terminals with an insulated resistor before touching.
Access — Remove the furnace blower/control access panel.
Document — Photograph the wire positions on the capacitor terminals.
Remove — Loosen the mounting strap, pull the spade connectors, and lift out the old capacitor.
Install — Seat the new capacitor in the strap, reconnect each lead to its original terminal, and tighten the bracket.
Test — Restore power and confirm the blower spins up smoothly and quietly.

Signs You Need a Replacement

Blower hums but won't start, or starts slowly
Visible bulging, leaking, or a domed top on the old capacitor
Capacitance reads well below 7.5 MFD on a meter
Intermittent airflow or motor overheating/tripping

Shipping & Returns

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

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

ICP Single Run Capacitor for WFM...

$18.20

Frequently Asked Questions

Does this Capacitor fit my ICP WFMR045A024B1 — 7.5 MFD 370V Oval | Ships Today?

Yes. This is the factory-specified OEM capacitor for the ICP WFMR045A024B1 — 7.5 MFD 370V Oval | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the capacitor on my ICP WFMR045A024B1 — 7.5 MFD 370V Oval | Ships Today?

Difficulty: Easy (20–30 min)
Step 1: Turn off power at breaker. Step 2: Open condensing unit panel. Step 3: Photograph the old capacitor wiring (Common/Herm/Fan). Step 4: Discharge old capacitor with insulated screwdriver. Step 5: Disconnect and remove old capacitor. Step 6: Mount new capacitor, reconnect wires to matching terminals. Step 7: Close panel, restore power, test. Tools: screwdriver, needle-nose pliers.

My AC hums but won’t start. What part do I need?

An AC that hums but won’t start is the classic symptom of a failed capacitor. The capacitor provides the electrical boost to start the compressor. When it fails, you hear humming but the motor can’t overcome inertia. Other symptoms: fan spinning slowly, AC cycling on/off rapidly, or a visibly swollen capacitor. Fix: replace capacitor ($15–$80 DIY, 30 min).

Is this capacitor compatible with Bryant or Payne too?

Many ICP parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my ICP capacitor?

OEM strongly recommended. OEM capacitors have ±6% MFD tolerance vs aftermarket ±10%. The looser tolerance causes motor winding stress, higher temps, and shorter compressor life. Price difference is only $10–$20 — OEM is the clear value choice.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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