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PowerhorseModel s27000d

Powerhorse 18,000W Dual-Fuel Generator Review

The Powerhorse s27000d is a robust dual-fuel generator offering 27,000 surge watts and 18,000 rated watts, suitable for both professional and home backup power needs.

At a Glance

  • Running Watts
    18000W
  • Starting Watts
    27000W
  • Fuel Type
    Dual-Fuel
  • Runtime (50%)
    8h
  • Noise Level
    97 dB
  • Weight
    557 lbs

Where to buy

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    Is this the right generator for you?

    Here's the quick tradeoff view — what this model does well, and where it may not fit.

    Pros

    • Dual fuel technology - runs on gasoline or propane
    • 999cc OHV V-Twin engine
    • Electric start ensures quick, easy starting
    • Automatic voltage regulator ensures consistent, reliable power
    • 100% copper-wound generator head allows continuous operation without overheating
    • Less than 5% THD allows for safely running sensitive electronics
    • Heavy-duty steel frame with 13in. flat-free tires and folding handles for easy portability
    • CO shutdown function for added safety

    Cons

    • Heavy weight at 557 lbs.
    • High noise level at 97 dB.
    Best use cases
    Home backup

    Summary

    The Powerhorse s27000d is a robust generator designed for heavy-duty applications, making it an ideal choice for construction sites, outdoor events, and emergency backup power. With a starting wattage of 27,000 watts and a running wattage of 18,000 watts, this generator can handle a variety of power needs, from running multiple tools at a job site to providing backup power for home appliances during outages.

    This generator operates on both gasoline and propane, offering versatility in fuel choice. Its substantial fuel tank capacity of 17.17 gallons allows for extended runtimes, especially at a 50% load where it can run for up to 8 hours. While the noise level is rated at 97 decibels, users should consider this when planning its use in residential areas or during quieter times.

    Power & Runtime

    The Powerhorse s27000d generator operates on dual fuel, allowing users to choose between gasoline and propane. This flexibility is particularly beneficial in situations where one fuel type may be more readily available than the other. The generator’s starting wattage of 27,000 watts is impressive, providing ample power to start larger appliances and multiple tools simultaneously. Its running wattage of 18,000 watts is sufficient for continuous operation of several devices, making it suitable for both home and professional use.

    In terms of runtime, the generator is designed for efficiency with a substantial 17.17-gallon fuel tank. When operating at 50% load, users can expect a runtime of approximately 8 hours. However, it is important to note that at a 25% load, the runtime is not applicable, indicating that the generator is best utilized with a higher load to maximize efficiency. The noise level of 97 decibels is a consideration for potential users, especially in residential areas or during nighttime use.

    The starting mechanism is electric, allowing for convenient and quick starts, which is essential in emergency situations or when time is of the essence. The total harmonic distortion (THD) is less than 5%, ensuring that sensitive electronics can be safely powered without risk of damage.

    Outlets

    The Powerhorse s27000d generator does not come with pre-installed outlets, which may be a limitation for some users. However, it is important to assess the needs of the intended application to determine if this feature is critical. The absence of RV-ready outlets indicates that this generator is not specifically designed for recreational vehicle use, which may deter some potential buyers who seek a generator for camping or travel purposes.

    Additionally, the generator lacks transfer switch capability, meaning users will need to implement alternative methods for connecting the generator to their home’s electrical system during outages. This could involve the use of extension cords or external transfer switches, which may add to the overall setup time and complexity.

    Portability

    Weighing in at 557 pounds, the Powerhorse s27000d is not the lightest option on the market, but its robust construction is indicative of its heavy-duty capabilities. The dimensions of 38 x 25.5 x 33.6 inches also contribute to its substantial presence, making it a generator that is best suited for stationary use rather than frequent transport.

    The design includes a sturdy frame that enhances durability, which is crucial for job site applications. While the generator is equipped with wheels and handles, making it somewhat portable, users should be prepared for the physical demands of moving such a heavy unit. The wheels are designed for stability, allowing for easier maneuverability across various terrains.

    Features

    The control panel of the Powerhorse s27000d is designed for functionality, offering users a straightforward interface for operation. While it does not feature advanced digital displays, the simplicity of the control panel ensures that users can easily monitor power output and fuel levels.

    Safety features are an important consideration, and this generator includes essential safeguards to protect both the unit and its users. These may include overload protection and low oil shutdown, helping to prevent damage during operation.

    Included accessories are not detailed, which suggests that users may need to invest in additional components such as extension cords or transfer switches to fully utilize the generator’s capabilities.

    Recommended Audiences

    • Construction professionals needing reliable power for tools and equipment
    • Homeowners looking for backup power solutions during outages
    • Event organizers requiring portable power for outdoor gatherings
    • Campers or RV enthusiasts who may use propane as a fuel source
    • Emergency preparedness planners seeking high-output generators
    • Businesses that require temporary power for events or job sites
    • Users who prioritize dual fuel options for flexibility in fuel sourcing
    • Individuals seeking a generator for heavy-duty applications rather than recreational use
    Updated: Jan 30, 2026

    Score Breakdown

    3.9
    / 10
    Rank #43 of 44 in Conventional (10,000-20,000W)
    Value (25%)
    Quality (25%)
    Practical (18%)
    Features (12%)
    Features (1.6 pts)
    • Dual-Fuel+1
    • Electric Start+0.6
    Percentile Rankings (within peer group)
    • Watts/$
    • Surge/$
    • Runtime/$
    • Warranty
    • THD (lower=better)
    • Build Quality
    • Noise (lower=better)
    • Portability
    • Outlet Variety
    • Feature Points

    What this generator can power

    At a Glance

    • Continuous:18,000W(recommended usable: 14,400W)
    • Surge:27,000W
    • Output:120/240V
    • Inverter:No

    Big-item compatibility

    Refrigerator
    Yes
    Sump Pump (1/3 HP)
    Yes
    Well Pump (1 HP, 240V)
    Yes
    Furnace Blower
    Yes
    Central AC (3 Ton, 240V)
    Yes
    Window AC (10,000 BTU)
    Yes
    Electric Water Heater (240V)
    Yes
    Electric Range/Oven (240V)
    Yes
    Air Compressor (1 HP)
    Yes

    Example setups

    Essentials

    • Lights + Wi-Fi + Charging
    • Refrigerator
    • Furnace Blower
    • Sump Pump (1/3 HP)

    Est. running: 1,800W

    Peak surge (single motor): 2,000W

    Avoid starting multiple motor loads at the same time.

    Essentials + Comfort

    • Lights + Wi-Fi + Charging
    • Refrigerator
    • TV + Entertainment System
    • Microwave
    • Window AC (10,000 BTU)
    • Space Heater
    • Furnace Blower

    Est. running: 5,000W

    Peak surge (single motor): 2,000W

    Avoid starting multiple motor loads at the same time.

    Whole-Home (Limited)

    • Lights + Wi-Fi + Charging
    • Refrigerator
    • Furnace Blower
    • Sump Pump (1/3 HP)
    • Well Pump (1 HP, 240V)
    • Central AC (3 Ton, 240V)
    • Window AC (10,000 BTU)
    • TV + Entertainment System

    Est. running: 8,600W

    Peak surge (single motor): 8,000W

    Avoid starting multiple motor loads at the same time.

    These are estimates using typical wattage assumptions. Real appliances vary. Startup surges can be 2–6× the running wattage for motor-driven loads. 240V loads require a 120/240V generator and proper connection. Use a transfer switch or interlock kit; never backfeed a panel.

    Powerhorse
    ReliabilityCAverage

    About Powerhorse

    Powerhorse is known for its reliable and affordable portable generators that cater primarily to homeowners and small businesses.

    Founded1981
    HQBurnsville, Minnesota, USA
    Website (opens in a new tab)
    Support1-800-221-0516
    Support / Manuals (opens in a new tab)
    View all Powerhorse generators

    Warranty

    Coverage: 2 years

    Power by fuel

    FuelRunningStartingRuntime @50%Runtime @25%
    Gasoline18000W27000W8h
    Propane16200W24300W

    Full Specifications

    Power

    Running Watts18,000 watts
    Starting Watts27,000 watts
    Starting Watts (Gasoline)27,000 W
    Starting Watts (Propane)24,300 W
    Running Watts (Gasoline)18,000 W
    Running Watts (Propane)16,200 W

    Engine

    Engine999 cc OHV V-Twin
    Engine TypeOHV V-Twin
    Engine Displacement999 cc
    Spark ArrestorYes
    Emissions ComplianceEPA, ANSI/PGMA G300-2023

    Electrical

    Voltage (AC)120/240
    Voltage (DC)12
    Running Amps150/75 A
    Peak Amps225/112.5 A
    AC Frequency60 hz
    GFCI OutletsYes
    NeutralYes
    DC Outlets1x 12V 8A receptacle
    AC Outlets2x Duplex 120V 20A (5-20R) GFCI2x 120V 30A (L5-30R)1x 120/240V 30A (L14-30R)1x 120/240V 50A (14-50R)
    Total Harmonic Distortion (THD)<5% %

    Dimensions

    Dimensions38 x 25.5 x 33.6 inches
    Weight557 lbs

    Other

    Automatic Low Oil ShutdownYes
    Emissions ComplianceEPA, ANSI/PGMA G300-2023
    Automatic Voltage RegulationYes
    Automatic Voltage RegulatorYes
    Carbon Monoxide SensorYes
    Commercial Warranty2 years
    Covered OutletsYes
    Electric StartYes
    Fuel GaugeYes
    Fuel Tank Capacity17.17 gallons
    Included AccessoriesFunnel, tool kit, propane hose, battery charging cables, battery, and wheel kit
    IndicatorsNo
    InverterNo
    Noise Level97 dBA
    Overload ProtectionLow oil and overload protection, CO monitoring
    Parallel CapableNo
    Residential Warranty2 years
    RV ReadyNo
    Starter TypeElectric
    Starting SystemElectric
    UPC840,321,763,976
    Warranty2 years
    WheelsYes

    Core

    Fuel TypeDual-Fuel

    Runtime

    Runtime @ 50%8 hours
    Runtime @ 50% Load (Gasoline)8 hours

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