Waukesha · Waukesha VHP Series

Waukesha F3524GSI

626 kW standby · Natural Gas · Liquid-cooled

Waukesha F3524GSI 626 kW prime natural gas generator. VHP Series Four rich-burn engine for CHP, distributed generation, and institutional cogeneration.

Standby power
626 kW / 626 kW prime
Voltage options
277/480V
Frequency / Phase
60 Hz · 3-phase
Engine
INNIO Waukesha F3524GSI Series Four
prime-powerchpdistributed-generation
Configure & Quote

Overview#

The Waukesha F3524GSI is a mid-range VHP engine producing 418-626 kW on natural gas, depending on the specific rating and configuration. Part of INNIO's VHP Series Four platform, the F3524GSI features a six-cylinder V configuration with rich-burn combustion and three-way catalytic converter for near-zero emissions compliance. This is a prime power and continuous duty engine — it is not designed for standby or backup applications.

The F3524GSI is commonly found in food processing plants, greenhouses, university campuses, and institutional CHP installations where both electricity and recovered heat are needed year-round. The engine's fuel flexibility allows operation on pipeline natural gas, wellhead gas, and some biogas compositions with appropriate fuel system tuning. INNIO's ESM engine management system provides precise air-fuel ratio control and remote monitoring capability.

OnPoint services Waukesha F3524GSI installations with scheduled maintenance, major overhauls, emissions system tuning, and control system support. Parts are available through INNIO's dealer network and a well-established independent aftermarket built over decades of VHP production.

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Configure your Waukesha F3524GSI

Lock the enclosure, fuel system, transfer switch, and add-ons — we'll confirm pricing, availability, and lead time within one business day. Prefer a free-form quote? That option is still here.

Estimate runtime for the Waukesha F3524GSI

Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.

Estimate runtime on this tank

Fuel demand at 75% load

6,573,000 BTU/hr6573.0 cf/min @ 1,000 BTU/cf

On utility natural gas the runtime is generally unlimited provided the supply line and meter can deliver this BTU/hr at the engine's required inlet pressure (typically 5–14" WC residential, up to 5 psi commercial). Confirm against the OEM's published fuel-pressure spec.

Service intervals

Manufacturer-recommended intervals for the Waukesha F3524GSI under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter
Every 500 hours or 6 months
Coolant change
Every 4000 hours
Air filter
Every 500 hours
Spark plugs
Every 2000 hours
Major overhaul
60,000 hours
Load bank test
Every 6 months

Common failure modes

What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.

ComponentSymptomTypical hoursSeverity
Spark plugs / ignition coilsMisfire, rough running, derating2,000+minor
Turbocharger(s)Power loss, elevated exhaust temps20,000+severe
Charge air coolerReduced output, elevated intake temperatures15,000+moderate
Exhaust valvesCompression loss, backfire, power drop30,000+severe

Frequently Asked Questions

Is the Waukesha F3524GSI suitable for CHP applications?
Yes. The F3524GSI is specifically designed for combined heat and power (CHP) installations. Its rich-burn combustion with three-way catalytic converter achieves near-zero emissions while enabling heat recovery from jacket water and exhaust for thermal loads in food processing, greenhouses, and institutional facilities.
What fuels can the Waukesha F3524GSI run on?
The F3524GSI operates on pipeline natural gas, wellhead gas, and some biogas compositions with appropriate fuel system tuning. INNIO's ESM engine management system provides precise air-fuel ratio control to optimize performance across different gas qualities and BTU values.

More in the Waukesha VHP Series

Natural gas prime power engines from 418 to 1,865 kW for CHP and distributed generation

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