Onan Marine Generator: 5 The Best Tips To Buy

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Onan Marine Generator

Choosing the right marine generator is crucial for ensuring a seamless and enjoyable boating experience. A reliable generator powers all your essential systems, from navigation to comfort amenities, without interruption. Onan, a leading brand in the marine industry, is renowned for its dependable and high-performance generators. Whether you’re outfitting a new boat or upgrading your current setup, selecting the best Onan Marine Generator can make all the difference.

In this blog post, you’ll discover five essential tips to help you make an informed purchase decision. These tips will guide you through understanding your power needs, evaluating key specifications, considering installation requirements, assessing maintenance and support, and comparing prices and vendors. By the end of this post, you’ll be equipped with the knowledge to choose the perfect Onan Marine Generator for your boating needs.

Tip 1: Understand Your Power Needs

When it comes to selecting the right Onan Marine Generator, the first and most crucial step is to understand your boat’s power needs. This involves assessing not only the current power requirements of all essential systems on your boat but also considering any potential future needs. A thorough understanding ensures that you choose a generator that can handle your power load without any issues, providing a seamless and enjoyable boating experience.

Explanation: Your boat’s power requirements encompass a wide range of systems, from navigation and communication devices to lighting, refrigeration, and air conditioning. Each of these systems has specific power demands, and failing to account for them accurately can lead to generator overload, inefficient operation, or even system failures. Additionally, as you upgrade or add new equipment to your boat, your power needs may increase. Therefore, it’s important to factor in some buffer for future expansion.

Benefits: By accurately assessing your power needs, you can:

• Avoid the inconvenience of generator overloads and power shortages.
• Ensure efficient and reliable operation of all on-board systems.
• Extend the lifespan of your generator by preventing excessive strain.
• Plan for future upgrades without needing to replace your generator.

Action Steps: Here’s a step-by-step guide to help you calculate your boat’s power needs:

1. List All Electrical Devices: Make a comprehensive list of all electrical devices and systems on your boat. Include everything from major systems like air conditioning and refrigeration to smaller devices like lights and navigation equipment.
2. Determine Power Ratings: Find the power rating (in watts or kilowatts) for each device. This information is usually found on the device’s nameplate or in the user manual.
3. Calculate Total Power Consumption:
   • Use the formula: Power Consumption (Wh) = Power Rating (W) x Usage Time (h)
   • For each device, multiply the power rating by the number of hours you typically use it per day. This gives you the daily power consumption for each device.
   • Add up the daily power consumption of all devices to get the total daily power requirement.
4. Factor in Peak Loads: Identify devices that have high starting power requirements (like refrigerators or air conditioners) and ensure your generator can handle these peak loads.
5. Add a Buffer: Add a 20-30% buffer to your total power requirement to account for future additions and unforeseen power needs.

Sample Calculation:

• Air Conditioner: 1,500 watts x 8 hours/day = 12,000 watt-hours (Wh)
• Refrigerator: 500 watts x 24 hours/day = 12,000 Wh
• Lights: 100 watts x 6 hours/day = 600 Wh
• Navigation Equipment: 200 watts x 10 hours/day = 2,000 Wh
• Total Daily Power Requirement: 12,000 Wh + 12,000 Wh + 600 Wh + 2,000 Wh = 26,600 Wh
• Adding 25% Buffer: 26,600 Wh x 1.25 = 33,250 Wh or 33.25 kWh

By following these steps and using the load calculation formula, you can ensure that your chosen Onan Marine Generator will meet your current and future power needs, providing reliable performance and peace of mind on every voyage.

Tip 2: Evaluate Key Specifications

Selecting the right Onan Marine Generator for your boat goes beyond just understanding your power needs. It’s essential to evaluate the key specifications to ensure that the generator you choose aligns with your boat’s technical requirements and your personal preferences. This step is crucial for achieving optimal performance and satisfaction.

Explanation: When evaluating key specifications, consider the following critical factors:

1. Wattage: The generator’s power output, measured in watts, should match your calculated power needs from Tip 1. Ensure the generator can handle both continuous loads and peak loads without straining.
2. Fuel Type: Onan marine generators typically come in diesel and gasoline models. Diesel engines are more fuel-efficient and have a longer lifespan, making them ideal for larger boats and commercial applications. Gasoline engines are generally quieter and have lower initial costs, suitable for smaller, recreational boats.
3. Noise Level: The noise produced by the generator can significantly impact your boating experience. Onan generators are designed with advanced sound-dampening technologies, but it’s still important to check the decibel rating to ensure a quiet operation, especially if you’re using the generator in a small, enclosed space.
4. Size and Weight: The physical dimensions and weight of the generator must be compatible with the available space on your boat. Ensure there’s enough room for installation and adequate ventilation.
5. Cooling System: Onan generators use either raw water or closed cooling systems. Raw water systems are simpler but require clean water to operate efficiently. Closed systems are more complex but provide better performance and longevity.

Benefits: Evaluating these specifications helps you:

• Match Technical Requirements: Ensures the generator fits your boat’s specific needs and constraints.
• Enhance Performance: Achieves optimal power output and efficiency.
• Improve Comfort: Reduces noise and vibrations for a more pleasant boating experience.
• Ensure Longevity: Selects a generator that will last and perform well over time.

Comparison Chart: Here’s a comparison of some popular Onan Marine Generator models based on these specifications:

Model	Wattage	Fuel Type	Noise Level (dB)	Size (L x W x H)	Weight	Cooling System
Onan MDKBH	7.5 kW	Diesel	67 dB	36.8″ x 21.6″ x 22.7″	505 lbs	Closed
Onan MDKBL	13.5 kW	Diesel	68 dB	41.4″ x 22.1″ x 25.9″	765 lbs	Closed
Onan MDKDP	21.5 kW	Diesel	65 dB	45.6″ x 26.1″ x 29.7″	1040 lbs	Closed
Onan 5.0MCA/6.5MCA	5.0/6.5 kW	Gasoline	63 dB	26.7″ x 16.9″ x 17.9″	272 lbs	Raw Water
Onan 9.0MDDC/11.0MDDC	9.0/11.0 kW	Gasoline	67 dB	31.8″ x 19.7″ x 20.3″	439 lbs	Raw Water

Tip 3: Consider Installation Requirements

When selecting an Onan Marine Generator, it’s essential to consider the installation requirements. Proper installation is crucial for the generator’s performance, safety, and longevity. Ensuring the right setup involves several factors, including space, ventilation, and accessibility.

Explanation: Installing a marine generator is a complex process that requires careful planning and execution. Here are the key factors to consider:

1. Space: The generator must fit into the designated area on your boat without obstructing other equipment. Measure the available space and compare it with the generator’s dimensions. Ensure there’s enough room for maintenance and repairs.
2. Ventilation: Proper ventilation is vital to prevent overheating and ensure the generator operates efficiently. Marine generators produce heat and exhaust gases that need to be safely expelled from the engine compartment. Ensure adequate airflow around the generator and install proper exhaust systems.
3. Accessibility: Easy access to the generator is essential for regular maintenance and emergency repairs. Ensure that the installation location allows for straightforward access to all sides of the generator. This will make it easier to perform routine checks and address any issues that arise.

Benefits: Considering these installation factors ensures:

• Smooth Installation: Avoids complications during the installation process, saving time and effort.
• Optimal Performance: Proper space and ventilation contribute to the generator running efficiently and safely.
• Ease of Maintenance: Accessible installation makes regular maintenance and repairs more manageable, prolonging the generator’s lifespan.

Installation Guide: Here’s a checklist and tips to help you with the installation process:

Installation Checklist:

1. Measure the Installation Area:
   • Ensure the space is sufficient for the generator model you selected.
   • Leave extra room for ventilation and access.
2. Check Ventilation Requirements:
   • Install ventilation fans if necessary to ensure adequate airflow.
   • Ensure exhaust systems are correctly set up to expel gases safely.
3. Plan for Accessibility:
   • Ensure there is enough room around the generator for maintenance tasks.
   • Position the generator so that you can easily reach all service points.
4. Secure the Generator:
   • Use appropriate mounts to secure the generator firmly to the boat.
   • Ensure the mounts can absorb vibrations to minimize noise and wear.
5. Connect Fuel Lines and Electrical Systems:
   • Ensure fuel lines are properly connected and free of leaks.
   • Connect the generator to the boat’s electrical system following safety guidelines.
6. Test the Installation:
   • Run the generator to ensure it operates smoothly without issues.
   • Check for proper ventilation and secure connections.

Tips for Working with Professional Installers:

• Hire Certified Technicians: Look for installers certified by Onan or Cummins to ensure they have the necessary expertise.
• Discuss Specific Needs: Communicate your boat’s layout and any specific requirements you have.
• Verify Work: After installation, check the work to ensure it meets your expectations and safety standards.
• Schedule Regular Maintenance: Work with your installer to set up a maintenance schedule to keep the generator running optimally.

Tip 4: Assess Maintenance and Support

Choosing the right Onan Marine Generator is just the beginning. To ensure your generator continues to perform optimally and has a long lifespan, regular maintenance and access to support services are crucial. Understanding the importance of these aspects can save you time, money, and potential headaches down the line.

Explanation: Maintenance involves regular inspections, servicing, and timely repairs to keep your generator in peak condition. This includes checking the oil levels, replacing filters, inspecting electrical connections, and ensuring the cooling system is functioning correctly. Support services, on the other hand, provide professional assistance when you encounter issues beyond regular maintenance, ensuring that you have expert help when needed.

Benefits: Regular maintenance and robust support services offer several advantages:

• Optimal Performance: Keeps the generator running smoothly, ensuring reliable power supply for your boat.
• Increased Longevity: Regular upkeep prevents wear and tear, extending the lifespan of your generator.
• Cost Savings: Prevents costly repairs and downtime by addressing minor issues before they become major problems.
• Peace of Mind: Knowing that expert help is available when needed reduces stress and ensures a worry-free boating experience.

Support Resources:

Available Maintenance Services:

• Routine Inspections: Scheduled checks of the generator’s components to ensure everything is working correctly.
• Oil and Filter Changes: Regular replacement of oil and filters to keep the engine clean and efficient.
• Electrical System Checks: Inspection of wiring, connections, and battery systems to prevent electrical failures.
• Cooling System Maintenance: Ensuring the cooling system is free of blockages and functioning properly to prevent overheating.

Warranty Details:

• Standard Warranty: Onan Marine Generators typically come with a standard warranty that covers parts and labor for a specific period, usually 1-2 years.
• Extended Warranty: Optional extended warranties can provide additional coverage, offering peace of mind for a longer duration.

Finding Authorized Service Centers:

• Cummins Service Locator: Use the Cummins Service Locator to find authorized service centers near you. These centers are staffed with trained technicians who specialize in Onan Marine Generators and can provide expert maintenance and repairs.
• Onan Dealers: Contact local Onan dealers for maintenance services and support. Dealers often provide comprehensive services, including routine maintenance, emergency repairs, and warranty claims.

Tips for Maintaining Your Onan Marine Generator:

1. Follow the Maintenance Schedule: Adhere to the recommended maintenance schedule provided in your generator’s user manual.
2. Use Genuine Parts: Always use genuine Onan parts for replacements to ensure compatibility and reliability.
3. Keep Records: Maintain a log of all maintenance activities and services performed on your generator. This helps track the generator’s condition and aids in warranty claims if needed.
4. Perform Visual Inspections: Regularly inspect the generator for any signs of wear, leaks, or damage and address issues promptly.
5. Consult Professionals: When in doubt, consult professional technicians for advice and service to avoid any mishandling that could damage the generator.

Tip 5: Compare Prices and Vendors

When purchasing an Onan Marine Generator, it’s essential to compare prices and evaluate vendors to ensure you get the best deal. Taking the time to shop around can help you find competitive pricing and reliable customer service, making your investment worthwhile.

Explanation: The marine generator market is diverse, with various vendors offering different prices, warranties, and after-sales support. By comparing these factors, you can make an informed decision that balances cost with quality. This involves looking at the overall cost, including any additional fees for shipping, installation, and extended warranties. Evaluating vendors also means checking their reputation, customer reviews, and service offerings to ensure you’re dealing with a reputable seller.

Benefits: Comparing prices and vendors provides several advantages:

• Value for Money: Ensures you get the best possible price for the generator, including any additional features or services.
• Reliable Customer Service: Choosing a reputable vendor guarantees better customer support, which is crucial for maintenance and warranty claims.
• Informed Decision: Helps you understand the market better and choose a vendor that offers the best combination of price, quality, and service.

Vendor List:

1. Cummins Inc.

• Overview: Direct manufacturer sales and services, offering a wide range of Onan Marine Generators.
• Contact Information: Visit Cummins Inc. for more details.
• Price Range: $5,000 – $25,000
• Locations: Multiple locations worldwide, use their location finder on the website.

2. Marine Engines 4 Less

• Overview: Specializes in marine engines, including Onan generators, known for competitive pricing and expert advice.
• Contact Information: Visit Marine Engines 4 Less
• Price Range: $4,500 – $23,000
• Locations: Based in the USA, contact for shipping options.

3. Power Equipment Direct

• Overview: Online retailer offering Onan marine generators with nationwide shipping.
• Contact Information: Visit Power Equipment Direct
• Price Range: $5,200 – $26,000
• Locations: Nationwide shipping available in the USA.

4. Diesel Pro Power

• Overview: Authorized dealer specializing in diesel marine engines, including Onan.
• Contact Information: Visit Diesel Pro Power
• Price Range: $5,000 – $24,000
• Locations: Based in Miami, FL, USA, with international shipping options.

5. Boats.net

• Overview: Comprehensive marine parts and engines retailer, known for a wide selection and easy ordering.
• Contact Information: Visit Boats.net
• Price Range: $4,800 – $25,500
• Locations: Multiple locations in the USA, with shipping options.

Tips for Comparing Prices and Vendors:

1. Total Cost: Look beyond the sticker price and include all additional fees, such as shipping, installation, and extended warranties.
2. Warranty and Service: Evaluate the warranty terms and after-sales support offered by each vendor.
3. Reputation: Check customer reviews and ratings to gauge the vendor’s reliability and customer service quality.
4. Special Offers: Look for any promotions, discounts, or financing options that can make the purchase more affordable.
5. Consult Experts: If possible, consult with marine professionals or fellow boat owners for vendor recommendations and experiences.

FAQ on “Onan Marine Generator”

Conclusion

Choosing the right Onan Marine Generator involves understanding your power needs, evaluating key specifications, considering installation requirements, assessing maintenance and support, and comparing prices and vendors. By following these tips, you can ensure a reliable, efficient, and cost-effective power solution for your boating adventures. Ready to make your purchase? Explore our recommended vendors and take the first step towards enhancing your marine experience. Share your experiences or ask questions in the comments below!

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