Will the generator supplier / installer be responsible for its installation, service and parts? Is the seller an authorized Generac® Guardian® dealer? How long have they been a dealer? Does the dealer use licensed, insured electricians and plumbers? Do they obtain permits where required? Is the dealer factory-trained by Generac®, at the Generac Guardian factory headquarters in Whitewater, Wisconsin? Are they fully qualified to perform electrical site surveys, generator sizing and selection, product sales, delivery, installation, generator start-up? Will they perform after sale warranty services? Do they offer long-term service and maintenance? Is the generator supplier / installer selling and/or installing your generator as a sideline or is it their core business? With Generators of Houston you have one, single-point contact who can be fully responsible for every aspect of your generator project now, and as long as you own it.