The Guardian Series 16 KW
Never Darks #1 most poular model, the 16 KW Provides 16 essential circuit power protection for your home, ensuring the essentials remain powered during an outage such as water pump, heat/AC, refrigerators, freezers, lights, outlets, etc. This is our most popular model for the cost as well as how much it will cover in your home. (the most bang for your buck). The 17 KW is usually the smallest generator you will need for a central AC unit or heat pump. If the heat/AC unit is old or large then you will need to move up to our next most popular unit the 20 KW OR 22 KW
The Guardian Series 20 KW – 22 KW
Never Darks next most popular models may also be used as an essential circuit power protection for your home, but are usually used to power the WHOLE HOUSE Never Dark pairs the generator with the smart switch and load shedding modules. These modules are placed on secondary large loads such as ovens, dryers, or 2nd heat/AC. If the generator reaches capacity it will shed those devices off, protecting the generator. This system typically saves you about $10,000 compared to the large liquid cooled units, as well as a much smaller footprint in the yard, 1/2 the fuel usage, as well as 1/2 the maintenace costs.
The Briggs and Stratton / GE 20KW Whole House with Load Share Technology
For whole house coverage using load share technology. Never dark installs smart modules that lock out your other large loads (2nd or 3rd heat/AC) and hold them out for 5 minutes then bringing each module on in series at 2 minute intervals. Generator can never reach an overload situation because the transfer switch will shed the modules as needed and bring them back on as available power allows by the order of priorities that you have picked. This system typically saves you 
about $10,000 compared to the large liquid cooled units, as well as a much smaller footprint in the yard, 1/2 the fuel usage, as well as 1/2 the maintenace costs.
