What MFD capacitor do I need for my ICP AC?

The correct replacement for ICP model WFMR090C048B1 — Furnace Blower | 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 WFMR090C048B1 — Furnace Blower | 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 Run Capacitor 7.5 MFD 370V Oval for WFMR090C048B1 — Furnace Blower | Ships Today

Name: ICP Run Capacitor 7.5 MFD 370V Oval for WFMR090C048B1 — Furnace Blower | Ships Today
Brand: ICP
SKU: 1170643
Price: 24.64 USD
Availability: InStock

SKU: 1170643 Brand: ICP

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Overview

This OEM strap-mount oval run capacitor (part #1170643) provides the continuous phase-shift needed to keep the blower motor running on your ICP/Tempstar/Heil WFMR090C048B1 furnace. Rated at 7.5 MFD and 370V, the capacitor stores and releases electrical energy each cycle to maintain smooth, efficient motor rotation. When a run capacitor weakens or fails, the motor draws excessive amperage, runs hot, hums without starting, or stops entirely — leading to no airflow and short cycling. Replacing a tired capacitor is the single most common HVAC repair and restores full blower performance instantly.

Specifications

Spec	Value
Part Number	1170643
Type	Single Run, Oval (Strap Mount)
Brand	ICP / Tempstar / Heil
Capacitance	7.5 MFD
Voltage	370V
Tolerance	±6%

Compatibility

Engineered for the ICP/Tempstar/Heil WFMR090C048B1 gas furnace and shares the same blower-motor capacitor across many WFMR090-series air handlers. Always confirm the MFD and voltage rating stamped on your old capacitor before installing.

Installation Guide

Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter. Discharge the capacitor across its terminals with an insulated resistor before touching.
Access — Remove the blower compartment service panel.
Document — Photograph all wire connections before disconnecting.
Remove — Loosen the mounting strap, slide out the old oval capacitor, and label the leads.
Install — Secure the new capacitor in the strap and reconnect each lead to its matching terminal per your photo.
Test — Restore power and confirm the blower starts smoothly and runs at full speed.

Signs You Need a Replacement

Blower hums but won't start or is slow to spin up
Bulging, leaking, or domed capacitor top
Weak airflow or intermittent blower operation
Measured capacitance below the rated 7.5 MFD

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 Run Capacitor 7.5 MFD 370V O...

$24.64

Frequently Asked Questions

Does this Capacitor fit my ICP WFMR090C048B1 — Furnace Blower | Ships Today?

Yes. This is the factory-specified OEM capacitor for the ICP WFMR090C048B1 — Furnace Blower | 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 WFMR090C048B1 — Furnace Blower | 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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