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Mi-T-MModel GEN-2500-IMM1

Mi-T-M 2,300W Gas Inverter Generator Review

The Mi-T-M GEN-2500-IMM1 is a 2300-watt gasoline inverter generator built for users who need portable backup power without sacrificing clean output. At 57 pounds, this unit bridges the gap between true portability and enough wattage to run multiple devices simultaneously. It can power essential appliances, power tools, and sensitive electronics like laptops during camping trips, tailgating events, or residential outages. The inverter technology keeps total harmonic distortion at 3 percent, which means laptops, TVs, and phone chargers stay protected from voltage spikes. Because the fuel tank holds only 1 gallon, refueling becomes part of the operating rhythm rather than a weekend-long concern.

At a Glance

  • Running Watts
    2300W
  • Starting Watts
    2500W
  • Fuel Type
    Gasoline
  • Runtime (50%)
    5h
  • Noise Level
    67 dB
  • Weight
    57 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

    • Lightweight at only 57 lbs, easily carried by one person
    • Low THD of 3% protects sensitive electronics like laptops and phones
    • Parallel capable to double power output when paired with another unit
    • Includes GFCI outlets and carbon monoxide sensor for safety
    • Compact dimensions fit easily into vehicles and storage spaces

    Cons

    • Lacks automatic voltage regulation found on 76% of comparable generators
    • Higher noise at 67 dBA vs 56 dBA peer average limits placement options
    • Shorter runtime of 5 hours at 50% load vs 6.4 hours peer average
    Best use cases
    Sensitive electronicsExpandable power

    Summary

    The Mi-T-M GEN-2500-IMM1 is a gasoline-powered inverter generator that delivers 2,300 running watts and 2,500 starting watts. That output level sits squarely in the essentials category, giving users enough capacity to run a refrigerator, a few lights, a phone charger, and a small window fan simultaneously during a power outage. It will not power a central air conditioner or a full kitchen, but for keeping critical circuits alive or running a handful of tools at a remote site, the wattage hits the mark. Because this is an inverter unit, the electricity it produces is cleaner and more stable than what a conventional open-frame generator delivers, which matters the moment you plug in a laptop, a CPAP machine, or a flat-screen TV.

    Mi-T-M is an industrial equipment manufacturer based in Iowa, better known for pressure washers and air compressors than consumer generators. That commercial DNA shows up in the build quality and straightforward control layout of the GEN-2500-IMM1, even though the unit itself targets lighter-duty, portable applications.

    Power & Runtime

    Running on gasoline, the GEN-2500-IMM1 draws from a 1-gallon fuel tank. That small tank keeps weight down, but it also means the refueling cycle comes around quickly. At 50% load, the generator runs for about 5 hours before the tank is empty. In practice, this translates to roughly one refill per evening if you are running a few essentials overnight during a blackout, or a midday top-off on a job site. Planning fuel supply is straightforward because a single spare gallon can doubles your runtime window, but users should expect to stay attentive to fuel levels rather than set it and forget it.

    The 3% total harmonic distortion rating is worth paying attention to. THD measures how "clean" the electrical output is, and anything under 6% is generally considered safe for microprocessors and sensitive circuitry. At 3%, the GEN-2500-IMM1 can power laptops, gaming consoles, medical devices, and smart home equipment without risking damage from dirty power. That is a real advantage over conventional generators, which often produce THD levels above 20%.

    Noise output sits at 67 dBA, which lands somewhere between a normal conversation and a running vacuum cleaner. At 20 to 25 feet away, the sound will be noticeable but not overwhelming. It is quiet enough for a campsite where neighbors are a few spots over, though it will not disappear into the background the way some ultra-quiet 58 dBA inverters do. Placing it on the far side of a vehicle or behind a barrier will help knock the perceived volume down another few decibels.

    Portability

    At 57 pounds, the GEN-2500-IMM1 falls firmly into grab-and-go territory. Most adults can lift it with one hand for a short distance or carry it comfortably with two hands to and from a truck bed. There is no need for a wheel kit or a second person. It is light enough to toss in a trunk alongside camping gear or slide onto a shelf in the garage without rearranging everything else.

    The physical footprint measures 21.50 inches long, 13.40 inches wide, and 19.30 inches tall. That is roughly the size of a small cooler, which means it fits in the back seat of a sedan, under a workbench, or in a closet without demanding dedicated floor space. For apartment dwellers or RV owners who measure storage in inches, the compact dimensions remove one of the biggest barriers to owning a backup generator.

    Features

    Built-in indicators on the control panel give users real-time feedback on the generator's operating status, removing the guesswork that comes with running a unit blind. Knowing at a glance whether the generator is overloaded or running low on oil prevents costly mistakes and keeps the machine healthy over time.

    Safety is layered into the design through multiple systems. GFCI-protected outlets monitor for ground faults and cut power in milliseconds if a dangerous current leak is detected, which is critical when operating outdoors in wet grass or damp conditions. A spark arrestor prevents hot carbon particles from exiting the exhaust, making the unit safe to operate in wooded or brush-heavy areas where fire risk is a concern. The generator also carries CARB compliance, meaning it meets California's strict emissions standards and can be legally sold and operated in all 50 states.

    Covered outlets shield the receptacles from rain, dust, and debris when they are not in use, adding a layer of protection that extends the life of the connections. Because the GEN-2500-IMM1 is parallel capable, owners can pair it with a second compatible unit to effectively double their output to around 4,600 running watts. That scalability means users can start with one generator and add a second later rather than buying a larger, heavier machine upfront.

    Mi-T-M backs the unit with a 1-year warranty. That is a limited window of coverage, so buyers should plan to verify the unit's performance early and address any issues within the first few months of ownership.

    Recommended Audiences

    • Users who want to scale output via parallel operation, starting with one unit and adding a second as power needs grow
    • Owners of sensitive electronics seeking clean inverter power with low THD to protect laptops, TVs, and medical devices
    • Shoppers who prefer gasoline-powered generators for the convenience of widely available fuel
    • Homeowners needing emergency backup for essential circuits like refrigerators, lights, and communication devices
    • Users who need a lightweight, portable power solution that one person can carry and store without hassle
    Updated: Mar 11, 2026

    Score Breakdown

    3.0
    / 10
    Rank #67 of 74 in Inverter (0-2,500W)
    Value (25%)
    Quality (25%)
    Practical (18%)
    Features (12%)
    Features (1.4 pts)
    • Inverter+1
    • Parallel Capable+0.4
    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:2,300W(recommended usable: 1,840W)
    • Surge:2,500W
    • Output:120V only
    • Inverter:Yes (clean power for electronics)

    Big-item compatibility

    Refrigerator
    Yes
    Sump Pump (1/3 HP)
    Yes
    Well Pump (1 HP, 240V)
    No

    Needs 240V output

    Furnace Blower
    Yes
    Central AC (3 Ton, 240V)
    No

    Needs 240V output

    Window AC (10,000 BTU)
    Yes
    Electric Water Heater (240V)
    No

    Needs 240V output

    Electric Range/Oven (240V)
    No

    Needs 240V output

    Air Compressor (1 HP)
    Maybe

    May struggle with startup surge

    Example setups

    Essentials

    • Lights + Wi-Fi + Charging
    • Refrigerator
    • Furnace Blower

    Est. running: 1,000W

    Peak surge (single motor): 1,200W

    Avoid starting multiple motor loads at the same time.

    Essentials + Comfort

    • Lights + Wi-Fi + Charging
    • Refrigerator
    • TV + Entertainment System
    • Furnace Blower

    Est. running: 1,300W

    Peak surge (single motor): 1,200W

    Avoid starting multiple motor loads at the same time.

    Jobsite / Tools

    • Lights + Wi-Fi + Charging

    Est. running: 200W

    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.

    Mi-T-M
    ReliabilityCAverage

    About Mi-T-M

    Mi-T-M is a leading manufacturer of industrial-grade power equipment, including generators, known for their durability and reliability in demanding work environments.

    Founded1971
    HQPeosta, Iowa, USA
    Website (opens in a new tab)
    Support800-553-9053
    Support / Manuals (opens in a new tab)
    View all Mi-T-M generators

    Warranty

    Coverage: 1 year

    Power by fuel

    FuelRunningStartingRuntime @50%Runtime @25%
    Gasoline2300W2500W5h

    Full Specifications

    Power

    Running Watts2,300 watts
    Starting Watts2,500 watts
    Starting Watts (Gasoline)2,500 W
    Running Watts (Gasoline)2,300 W

    Engine

    EngineMi-T-M OHV
    Engine Displacement120 cc
    Spark ArrestorYes
    Emissions ComplianceCARB Compliant

    Electrical

    Voltage (AC)120
    Voltage (DC)12
    Peak Amps20.8 A
    Running Amps19.2 A
    GFCI OutletsYes
    AC Outlets120V 20A GFCI Duplex
    DC Outlets12V DC 8.3A
    USB OutletsUSB ports
    Total Harmonic Distortion (THD)3 %

    Dimensions

    Dimensions21.50 x 13.40 x 19.30 inches
    Weight57 lbs

    Other

    Emissions ComplianceCARB Compliant
    Carbon Monoxide SensorYes
    Covered OutletsYes
    Fuel Tank Capacity1 gallons
    Idle Control SystemIdle control
    IndicatorsYes
    InverterYes
    Noise Level67 dBA
    Parallel CapableYes
    Part NumberGEN-2500-IMM1
    Residential Warranty1 years
    Warranty1 years
    Winding MaterialCopper

    Core

    Fuel TypeGasoline

    Runtime

    Runtime @ 50%5 hours
    Runtime @ 50% Load (Gasoline)5 hours

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