In the noise department, the inverter runs much quieter. Because of the way these internal combustion engines operate (changing speed due to changes in load demand), the hum generated by the inverter is very smooth. The noise they produce easily fades into the background.

However, traditional generators make a lot of noise. It's not uncommon for them to operate at 64 dB or more at their quietest level. On the other hand, the noise of an inverter rarely exceeds 54 dB even when operating at "full load".

Inverter vs. Generator – When an Inverter Makes the Most sense

Variable frequency generators are (usually) better suited for infrequent use. They are a great backup option in the event of an emergency where the power outage does not last long.

An inverter also provides a little less power than a traditional generator, which means it's more suitable for running basic electrical appliances etc. rather than being used as a "whole-home" energy alternative solution.

Inverter vs. Generator – When a Generator Makes the Most sense

Generators provide large amounts of raw electricity that can be used to power all of your home's core appliances, lighting systems, and even HVAC systems—usually without any effort.

These devices are much larger, heavier, and noisier. They also consume more fuel than inverters. You also have to be careful where you put them.

Generators are better suited for homeowners who want to power more than just their most basic needs, who have access to a steady supply of fuel and enough space to store these large generators until they are needed.

Inverter vs Generator – The Great Debate
Ultimately, the inverter vs. generator hardware debate really comes down to what your specific needs are, what your budget is, and the types of outages you anticipate having to face in the future.
Think about how you will use backup power in the future.

If you only use it occasionally, and not to power energy-hungry appliances such as refrigerators or air conditioners, an inverter may be a good choice.