The Ultimate Guide to Buying a Power Generator: What You Need to Know

The Ultimate Guide to Buying a Power Generator: What You Need to Know

Hey there, folks! Let's face it, whether it's due to a storm or just an unexpected blackout, losing power can be more than just an inconvenience. That's where a power generator comes in. But, picking the right one can feel like navigating a maze. Don't worry, though; I've got you covered. Let's break it down and make sure you're equipped with the knowledge to choose the best generator for your needs.

There are three main types of power generators to consider:

Portable Generators: Perfect for camping, providing power for a few key necessities at home, and are relatively affordable and user-friendly.

Inverter Generators: These ultra-quiet models are designed for running electronic equipment such as computers and have less noise output. They are the most expensive of all types.

Standby Generators: Permanently installed generators that can power an entire home and turn on automatically during an outage -- suitable for powering your whole house. They are the most expensive generator solutions, but definitely worth having if you want full-home backup.

Key features to consider:

Power Output: Measured in watts, this lets you know what you can run and how many items at one time.

Fuel Efficiency: More power and less fuel are key.

Control Panel: You want an easy-to-use panel and clear readouts.

Outlets: Ensure it has the types and numbers of outlets you need.

  • Sizing it Right

Selecting the right size for your generator is crucial. It's not just about power output; it's about matching your specific energy needs without overspending on unused capacity. Here's a deeper dive into how to size a generator correctly:

Understanding Wattage Requirements:

Start by Listing Your Essentials: Write down the appliances and devices you need to power. This could include refrigerators, lights, heaters, air conditioners, computers, and more.

Calculate Running and Starting Watts: Every appliance has two wattage ratings – running watts (continuous watts needed to keep the appliance running) and starting watts (extra watts needed for two to three seconds to start motor-driven products). For example, a refrigerator may require 800 watts to run, but it could need up to 1200 watts to start.

Use a Wattage Calculator: Many websites and apps offer free wattage calculators to help you sum up these numbers accurately.

Types of Loads and Their Impact:

Resistive Loads: These include items like light bulbs and coffee makers, which typically require the same amount of power to start and run.

Reactive Loads: These have an electric motor and need additional power to start, such as refrigerators and air conditioners. The key is to account for the highest starting wattage item in your list.Thinking Through Usage Scenarios:

Home Backup: If you’re looking to power essential home appliances during an outage (like lighting, refrigeration, and heating), you’ll need a generator with enough capacity to carry the highest starting wattage among your appliances plus the running wattage of the rest.

Outdoor or Recreational Use: A few small appliances and chargers for camping or tailgating calls for a smaller, portable inverter generator.

Job Site: Powering a slew of tools and equipment at a job site may require a higher-capacity generator, particularly if you’re running multiple tools at the same time.

Other Considerations:

Future Proofing: In the event you might acquire more appliances or devices, it might be a good idea to select a generator with slightly more capacity.

Simultaneous Use: You might not be running all of your appliances at the same time. Factor in your usage pattern when totaling wattage.

  • Fuel Types – What’s Best for You?

Gasoline: Common and convenient, but storage can be an issue.

Diesel: More efficient but can be expensive and noisy.


Propane: Clean and long-lasting, though less efficient.

Dual-Fuel / Tri-Fuel: Offer flexibility in fuel choice, which can be a huge advantage.


  • Noise Levels – Keeping the Peace

When it comes to generators, noise level is an important factor, especially if you're using it in residential areas or for activities like camping where peace and quiet are valued. Generators vary significantly in their noise output, and understanding which types are quieter and why can help you make a more informed decision.

Types of Generators and Their Noise Levels:

Inverter Generators: These are typically the quietest options available. Inverter generators are designed to adjust their engine speed to the demand, meaning they don't run at full tilt all the time. This feature not only saves fuel but also significantly reduces noise. For instance, models like the Honda EU2200i operate at about 48 to 57 decibels, which is roughly as loud as a normal conversation.

Portable Generators: The noise level on a portable generator can vary widely. In general, they tend to be louder than inverter generators. For instance, a standard portable generator can operate in the range of 60 to 80 decibels which is comparable to the noise level of street traffic.

Standby Generators: These generators are typically installed outside the home so they can be very loud. However, many of them come with sound-attenuating features like noise-reducing mufflers and sound-proof enclosures. Depending on size and model, standby generators can range from about 58 to 70 decibels.

Factors Affecting Noise Levels:

•Engine Size and Type: Typically, the larger the engine, the louder the generator. Diesel engines are often louder than gas or propane engines.

•Exhaust System Design: A good exhaust system can significantly reduce noise.

•Enclosure: Generators with sound-dampening enclosures or ones designed to run quietly can significantly reduce noise output.

Tips for Managing Noise:

•Location: Place your generator as far away from the living area of your home as possible. Also, be respectful of your neighbor.


Sound Deflectors: Use physical barriers or commercial sound deflectors to direct noise away from sensitive areas.

Regular Maintenance: A well-maintained generator is a quiet generator. Regularly check and clean the muffler and exhaust system.

  • Maintenance and Upkeep
Regular maintenance is key to longevity. Check oil levels, air filters, and fuel condition regularly. Also, consider ease of service and availability of spare parts.Budget Wisely

Generators can range from a couple hundred to several thousand dollars. Figure out what features are must-haves and what you can live without. Remember— the cheapest option isn’t always the best value in the long run.


How often should I run my generator?

It’s best to run it at least once a month to keep everything running properly.

Can I install a standby generator myself?

It’s recommended that a pro installs it since it involves electrical and gas work.

What’s the lifespan of a typical generator?

With proper maintenance, most generators can last anywhere from 10-20 years depending on use and quality.


How to pick a power generator is a wrap. The generator that’s best for you will depend on who you are and what you want from a generator. Do your due diligence and pick wisely. Stay powered up my friends, and stay ready. Let’s keep the lights on, no matter what!

Back to blog