OUTAGE STACK

Stack / WGen11500TFc

Westinghouse WGen11500TFc

Updated · 6 Nov 2026 · Sheet checked · 6 Nov 2026

It depends — 11,500 / 10,500 / 9,500 W running (gas / LP / NG), 14-50R, CO sensor, ≤5% THD claim, bonded neutral; not CARB, 230 lb, 74 dBA

OPEN-FRAME TRI-FUEL

For a house that needs about 11,500 W continuous on gasoline (10,500 W propane / 9,500 W natural gas) with a factory 14-50R, tri-fuel, and a CO sensor — not a quiet inverter, and not the live WGen9500DF.

Exact marketing name WGen11500TFc (UPC 850032657457). Open-frame tri-fuel with CO sensor. Not WGen9500DF (dual-fuel, no CO, THD ≤23%), not the quiet iGen line, not iGen11000DFc.

What it is

Conventional open-frame portable: 550 cc OHV Westinghouse engine, 9.5 gal gas tank, copper windings, VFT meter, low-oil shutdown, never-flat wheels. Start: electric + remote fob + recoil; battery included. Fuel: gasoline ↔ propane ↔ natural gas (hoses included). Out of stock on westinghouse.com (6 Nov 2026).

Continuous / peak (page + manual, checked 6 Nov 2026): gasoline 11,500 W running / 14,500 W peak; propane 10,500 W / 13,500 W; natural gas 9,500 W / 12,000 W. Voltage 120/240 V, 60 Hz. Outlets: two GFCI 5-20R duplexes, L14-30R (30 A breaker), 14-50R, ST Switch outlet, two USB-A. Noise 74 dBA. Dry weight 230 lb. Runtime: 19 h @ 25% / 9.5 h @ 50% gasoline; 7 h propane @ 50% (page; cylinder size not stated). THD ≤5% (mfr). CO sensor: Yes. CARB: No. MSRP US$1,699.00 (westinghouse.com, checked 6 Nov 2026). Links: no affiliate. Grounding: bonded to frame. Plan from gasoline 95.8 / 47.9 A running (page); manual NG amps (78.3 / 39.1 A) differ slightly from the page (79.1 / 39.5 A).

What it will actually run

Running watts first: 11,500 W gasoline / 10,500 W propane / 9,500 W natural gas. Surge second: 14,500 / 13,500 / 12,000 W peak — motor starts only. Gasoline running current is 47.9 A at 240 V / 95.8 A at 120 V (page) — rated generator current, not the 14-50R's 50 A receptacle rating. The 30 A breaker limits the L14-30R to 7,200 W at 240 V (Outage Stack math: 30 × 240); full output needs the 14-50R. Each 120 V leg carries about 5,750 W on gasoline (Outage Stack math). Derating (manual): about 3.5% per 1,000 ft and 1% per 10 °F above 60 °F.

CO (manual): monitors only while the engine is running, shuts down on rising CO, and "DOES NOT replace carbon monoxide alarms."

Will run (Outage Stack estimates)

  • fridge (150–400 W running, 600–1,200 W starting), lights (50–150 W), microwave (1,000–1,500 W) or 8–10k BTU window AC (800–1,200 W running, 1,800–3,000 W starting), and a 240 V well pump (1/2–3/4 hp: 800–1,500 W running, 2,000–4,000 W starting) through a sized 50 A transfer path (size table)
  • Building connection needs a transfer switch or other suitable transfer equipment installed by a qualified electrician (manual); float the bonded neutral only when that electrician says the AHJ requires it

Skip or measure first

  • central AC until nameplate LRA is checked against about 60.4 A starting at 240 V (14,500 ÷ 240, Outage Stack math)
  • electric water heater, dryer, or range with a compressor start
  • medical support equipment (manual forbids it)
  • CARB-only jurisdictions
  • Size table has no freezer or furnace-blower row

Specs that matter

Who should skip it

Verdict

It depends. Buy it for honest ~11.5 / ~10.5 / ~9.5 kW continuous (gas / LP / NG) with a factory 14-50R, CO sensor, ≤5% THD claim, and e-start/remote — plus a transfer switch. Skip CARB, close neighbors, or a solo lift. Not an inverter. Plan from 47.9 A at 240 V on gasoline, never from 14,500.

Sources: Westinghouse — WGen11500TFc product page (watts, amps, outlets, runtimes, THD ≤5%, CO, bonded neutral, not CARB, 230 lb, MSRP) · Westinghouse — WGen11500TFc user manual (bonded neutral, transfer switch, CO, medical ban, derating, breakers) · Outage Stack — size table; live peer WGen9500DF. Last checked: 2026-11-06.

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