Keep your Goodman GMPN100-4 furnace running efficiently with genuine OEM replacement parts from Repair Clinic. The GMPN100-4 is a 100,000 BTU input, 80% AFUE single-stage upflow gas furnace from Goodman’s GMPN series with a four-ton blower assembly. At 100,000 BTU this is the higher-output sibling of the GMPN060-3 on the same GMPN platform, cycling more aggressively on cold days. Repair Clinic stocks genuine Goodman OEM parts for the GMPN100-4 including the Goodman igniter parts, Goodman flame sensor parts, Goodman draft inducer motor parts, Goodman control board parts, and Goodman blower motor parts. Browse the Goodman furnace parts catalog filtered by GMPN100-4 for the complete parts inventory.
GMPN100-4: Goodman GMPN Series 100,000 BTU Upflow Furnace with Four-Ton Blower Assembly
The Goodman GMPN100-4 at 100,000 BTU is the higher-output configuration in the GMPN upflow series above the 60,000 BTU GMPN060-3. At 100,000 BTU the igniter accumulates thermal cycles faster than the lower-output sibling. The four-ton blower motor must not be substituted with the three-ton motor from the GMPN060-3. The Goodman furnace troubleshooting guide covers fault code blink patterns for the Goodman GMPN platform.
Most Replaced Parts on the Goodman GMPN100-4
Hot Surface Igniter for the GMPN100-4
At 100,000 BTU the GMPN100-4 cycles aggressively, accumulating igniter thermal cycles faster per season. Testing resistance at room temperature with power off confirms failure in under two minutes.
Goodman GMPN100-4 Flame Sensor
Annual cleaning with fine steel wool extends sensor service life and prevents most early-season nuisance lockouts.
Draft Inducer Motor for the GMPN100-4
The inducer is sized for 100,000 BTU throughput and must not be substituted with the inducer from the GMPN060-3. Bearing failure presents as grinding during the pre-purge phase.
Goodman GMPN100-4 Control Board
Read and document the LED fault code before ordering any replacement.
Blower Motor for the GMPN100-4
The four-ton blower motor must not be substituted with the three-ton motor from the GMPN060-3. Test the run capacitor before ordering a replacement motor.
Why Choose Repair Clinic for Goodman GMPN100-4 Parts
- Genuine Goodman GMPN OEM Components: Igniters, flame sensors, and four-ton blower motors confirmed for the GMPN100-4 upflow configuration Goodman furnace parts.
- GMPN100-4 vs GMPN060-3 Output Differentiation: 100,000 BTU four-ton and 60,000 BTU three-ton inducer and blower specifications are catalogued separately.
- Fault Code Resources: Goodman GMPN LED blink code charts through Goodman furnace troubleshooting.
- 365-Day Returns: Return any uninstalled Goodman part within a full year of purchase with no restocking fees.
Goodman GMPN100-4 Furnace Parts FAQ
What is the BTU output and efficiency of the Goodman GMPN100-4?
The GMPN100-4 is a 100,000 BTU input, 80% AFUE single-stage upflow gas furnace with a four-ton blower assembly from Goodman’s GMPN series.
What is the difference between the Goodman GMPN100-4 and the GMPN060-3?
The GMPN100-4 delivers 100,000 BTU with a four-ton blower while the GMPN060-3 delivers 60,000 BTU with a three-ton blower. The two configurations use different inducer motors and blower assemblies.
My Goodman GMPN100-4 furnace keeps locking out. Where do I start?
Read the control board LED fault code first. An ignition failure code points to the igniter or flame sensor in the vast majority of GMPN100-4 lockout calls.
What type of venting does the Goodman GMPN100-4 require?
The GMPN100-4 is an 80% AFUE non-condensing upflow furnace requiring standard metal B-vent. It produces no condensate.
