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  3. ONAN 305H-1

ONAN Automatic Control Auto Demand 305H-1/1B

305h-1 Onan Vintage 305h-1/1b Automatic Control Ha Series Auto Demand Controls

( Brand: Onan ), ( Manufacturer Part Number: 305H-1 ), ( Model: 305H-1/1B ), ( Part Type: Control ), ( Equipment Type: Automatic Demand Controls ), ( Country Of Origin: United States )

Review ONAN Vintage 305h-1/1b Automatic Control Ha Series Auto Demand Controls

The ONAN 305H-1 305H-1/1B Automatic Control Auto-Demand Generator is a powerful and efficient solution for providing backup power to your home or business. This generator is designed with ONAN's renowned engineering expertise and is built to deliver reliable and consistent power output.

The 305H-1 is a single-phase, air-cooled generator that boasts a continuous power output of 5.5 kW and a prime power output of 6.5 kW. It is equipped with a powerful 208V, 120/240V, 60Hz, 18.5 horsepower engine that ensures reliable performance even during prolonged power outages.

One of the standout features of this generator is its automatic control system. The 305H-1 is capable of sensing power outages and automatically starting up to provide backup power. It also features an automatic transfer switch that seamlessly transitions between utility power and generator power, ensuring a smooth and uninterrupted power supply.

The 305H-1 is also equipped with a QuietPower Technology muffler that reduces noise levels, making it an ideal choice for residential applications. It is designed to operate at a sound level of 62 dBA at 23 feet, making it one of the quieter generators in its class.

This generator is also built with durability in mind. It features a heavy-duty, powder-coated steel frame that provides protection against the elements and ensures long-lasting performance. It is also equipped with a heavy-duty, cast iron engine block and a corrosion-resistant aluminum fuel tank.

The 305H-1 is easy to maintain and service, with conveniently located service points and easy-to-read gauges. It also features a low oil shutdown sensor, which automatically shuts off the generator to prevent damage if the oil level gets too low.

Overall, the ONAN 305H-1 305H-1/1B Automatic Control Auto-Demand Generator is a powerful and reliable solution for providing backup power to your home or business. Its automatic control system, quiet operation, and durability make it an excellent choice for those who require a dependable and efficient generator.

The Onan 305H-1 and 305H-1/1B generators are automatic transfer switch (ATS) equipped generators designed for backup power applications. Here are some pros and cons that might help in making an informed decision about purchasing one of these generators.

Pros:

1. Automatic Operation: The Onan 305H-1 and 305H-1/1B generators come with an automatic transfer switch (ATS), which automatically starts the generator when there is a power outage and switches back to the utility power once it is restored.

2. Quiet Operation: These generators are known for their quiet operation due to their enclosed design and sound-attenuated mufflers.

3. Fuel Efficiency: The generators are fuel-efficient, which means they consume less fuel to generate the same amount of power as compared to some other generators.

4. Reliable: Onan generators have a reputation for being reliable and durable. They are built to withstand harsh operating conditions and have a long lifespan.

5. Versatile: These generators can be used for various applications, including powering home appliances, HVAC systems, and even small businesses.

Cons:

1. Expensive: The Onan 305H-1 and 305H-1/1B generators are more expensive than some other generators in their class due to their advanced features and high-quality construction.

2. Maintenance: Like all generators, the Onan 305H-1 and 305H-1/1B require regular maintenance to keep them in good working condition. This includes changing the oil, air filter, and spark plugs at recommended intervals.

3. Heavy: These generators are relatively heavy, weighing around 500 pounds, which makes them more difficult to move around compared to smaller generators.

4. Noise: While the generators are quieter than some other generators, they still produce some noise during operation. This might be a concern for those who are particularly sensitive to noise or live in quiet neighborhoods.

Conclusion:

The Onan 305H-1 and 305H-1/1B generators offer several advantages, including automatic operation, quiet operation, fuel efficiency, reliability, and versatility. However, they are more expensive than some other generators, require regular maintenance, and are relatively heavy. Ultimately, the decision to purchase one of these generators depends on your specific needs, budget, and preferences. If you value the advanced features and high-quality construction of an Onan generator, and can afford the higher price tag, then these generators are a great choice. If you are looking for a more affordable option or prefer a lighter, more portable generator, then you might want to consider other options.

Details:

Vintage Onan 305H-1/1B automatic control HA series auto demand controls 6 Cycles, 1 phase 2 wire, 120v vintage.

part #: 305h1 price

  • $85.00

specifications generatormac:

  • brand: Onan
  • mpn: 305h-1
  • model: 305h-1/1b
  • part type: Control
  • equipment type: Automatic Demand Controls
  • country of origin: United States

shipping generatormac:

  • service: USPS Priority Mail
  • cost: $32.84
  • transit: 5-11 Days
  • class: Expedited
  • type: Calculated
  • carrier: USPS

offer generatormac:

  • started: February 19, 2026
  • sold: 0
  • best offers: True
  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home

payments generatormac:

  • credit card: Mastercard
  • other
  • wallet: Google-pay

returns generatormac:

  • policy: No Returns

seller generatormac:

  • city: Gulf Shores, Alabama
  • rating: 100.0%
  • # reviews: 69

general generatormac:

  • Business Industrial > Light Equipment Tools > Generator Parts Accessories
  • condition: For parts or not working
part type: control, equipment type: automatic demand controls, country of origin: united states,
category: business & industrial > generator parts accessories, sku: 9870107125926793,

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1 offer $85.00 USD
  • Offer #1: $85.00 price + $14.48 shipping estimate = $99.48* total. vintage Onan /1B automatic control (HA series auto demand controls) 6 Cycles, 1 phase 2 wire, 120v.+$14.48 shipping

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