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Perma Power Sizing Tool

A simple tool. Powerful results.

Welcome to the Perma Power Standy Backup Power Sizing Tool

This tool will assist in estimating the proper back up power needs for your generator.
Use this section to include appliances that will be considered in your generator sizing caluclation.
First, we'll gather some details about your home.
This will be used to set an estimated baseline for your generator size.



We can help estimate the power to cover your HVAC needs.
If you know the total tonnage of your homes AC system(s), please enter it below. Otherwise, we can calculate it automatically based on your home size.



Couldn't find what you were looking for?
You can add custom appliances below.

Note: If the item will definitely be running during a power outage, please check the Critical checkbox.

Fill out the form below and instantly receive a free detailed report, including a breakdown of your selected appliances and estimated generator sizing needs.