ICP N9MPD075F12A2 90+ single-stage gas furnace Parts

The most common repairs on an Icp N9MPD075F12A2 90+ single-stage gas furnace involve ignition and safety shutoff issues (igniter, flame sensing, limit switch), airflow problems (dirty filter, blower issues), and control or venting problems (control board, inducer). Annual inspection before heating season helps prevent many of these failures; see the installation guide.

Common repairs we see most often

• Replace a failed hot surface igniter (no ignition, repeated tries)
• Clean or replace a dirty flame sensor (burners light then shut off)
• Address overheating and shutdowns (restricted airflow, limit switch trips)
• Repair venting or draft problems (inducer motor issues, pressure-related shutdowns)
• Diagnose no-heat or intermittent heat caused by controls or wiring

Parts on this model that often relate to these repairs

If symptoms match, these are common replacement parts for N9MPD075F12A2:

• Furnace burner igniter 1172533
• Furnace burner flame sensor 1172827
• Furnace temperature limit switch 1013102
• Icp furnace inducer vent motor assembly 1172823
• Icp furnace electronic control board 1172550

Quick symptom-to-likely-cause guide

Symptom	What it usually points to	What to check first
Blower runs, no heat	Ignition or flame proving issue	Igniter glow, flame sensor condition
Burners light then shut off	Flame sensor not proving flame	Clean sensor, check grounding
Furnace shuts down, then restarts later	Overheat protection tripping	Filter, supply registers, blower wheel
Draft motor runs but no ignition	Inducer/pressure/venting issue	Intake/exhaust blockage, inducer operation
Completely dead	Power, door switch, control issue	Breaker, door switch, control board status

Why it matters (safety and reliability)

This furnace uses multiple safety devices designed to shut the system down under unsafe conditions; when a safety opens, the furnace can stop heating and may not restart until the issue is corrected. We also follow the guidance to have the furnace inspected and serviced annually (before the heating season) by a qualified service technician.

Safety notes we follow before any repair

• Turn off electrical power at the service panel before servicing
• Shut off the gas supply at the manual valve before working on gas components
• Wear gloves and eye protection; sheet metal edges can be sharp
• Use only the approved gas type shown on the rating plate

For ordering, you can buy replacement parts for N9MPD075F12A2 from the parts list for this model, or search by model number on Sears PartsDirect.

Last updated: February 2026

On an Icp N9MPD075F12A2 90+ single-stage gas furnace, the most expensive repair is typically a major component replacement, most often the blower motor or the electronic control board. Heat exchanger-related repairs are also among the costliest because they involve extensive labor and critical safety checks (see the installation guide).

Most expensive furnace repairs (what usually drives the bill)

These repairs cost the most because they combine high-priced parts with longer diagnostic and installation time.

• Heat exchanger related repair or replacement (labor-intensive and safety-critical)
• Blower motor replacement (your model’s blower motor is a high-cost component)
• Electronic control board replacement (a common high-dollar electrical repair)
• Inducer vent motor assembly replacement (affects venting and safe ignition)
• Repeated limit trips that trace back to airflow problems (can lead to multiple parts and labor)

High-cost parts we commonly see on this model

Here are examples of expensive, model-relevant parts listed for the N9MPD075F12A2.

Component	What it does	Example part on this model
Blower motor	Moves heated air through the ductwork	Mtr blr 1013341
Electronic control board	Controls ignition sequence, blower timing, safeties	Icp furnace electronic control board 1172550
Inducer vent motor assembly	Pulls combustion gases through the vent system	Icp furnace inducer vent motor assembly 1172823

Why “heat exchanger” repairs are usually the most expensive

The heat exchanger sits at the center of combustion and venting safety. Your installation instructions emphasize correct gas type, avoiding overfiring, and proper venting to the outdoors, all of which directly protect the heat exchanger and safe operation. When a heat exchanger issue is suspected, the repair process typically includes more inspection, setup, and verification steps than a simple part swap.

How to reduce the chance of a big repair

These steps prevent the most common causes of expensive failures (overheating, poor airflow, and ignition stress).

• Replace the furnace filter on schedule to keep airflow strong
• Keep supply and return vents open and unobstructed
• Maintain proper clearances for service access (your guide calls out front clearance for servicing)
• Address short-cycling and repeated limit trips early (often airflow-related)
• If you’re ordering parts, match by model number N9MPD075F12A2 and part ID; you can also search on Sears PartsDirect

Last updated: February 2026

For the Icp N9MPD075F12A2 90+ single-stage gas furnace, replacement cost depends on the exact part and labor. Many common parts cost tens to a few hundred dollars; larger assemblies (like motors) cost more. Total installed cost rises most with diagnosis time and access.

Typical part price ranges (parts only)

These are common ranges for gas furnaces like the N9MPD075F12A2; confirm the exact part and current price in the parts list.

• Flame sensor: $20 to $60
• Hot surface igniter: $40 to $150
• Limit switch: $20 to $80
• Inducer motor assembly: $150 to $450
• Blower motor: $200 to $700
• Control board: $150 to $500

Example part on this model	What it does	Cost driver
Furnace burner flame sensor 1172827	Proves flame for safe burner operation	Usually low parts cost
Icp furnace inducer vent motor assembly 1172823	Moves combustion air and vents exhaust	Assembly cost, labor time
Icp furnace electronic control board 1172550	Manages ignition and safety timing	Higher parts cost, diagnosis

Labor and service charges (what changes the total)

• Diagnostic fee is common before parts are replaced
• Simple swaps (sensor, switch) take less time
• Motors and control boards take longer due to wiring and setup
• After repair, techs verify safe ignition and venting operation

Safety and why it matters

This furnace includes safety devices that shut the system down during unsafe conditions. We follow the shutdown steps and warnings in the installation guide, especially for any work involving gas supply, electrical power, or combustion components.

How to keep costs down

• Match the model number exactly: N9MPD075F12A2
• Confirm the symptom before ordering (no heat, no ignition, blower not running)
• Check basics first: filter, door switch, loose wiring
• Order the exact replacement listed for your furnace, then compare photos and connectors

You can order parts from the list for this model, or search by model number on Sears PartsDirect.

Last updated: February 2026