Powers Guaranteed Services

Powers Guaranteed Services installs and maintains home standby generators, and it holds a 4.7-star average from 276 ratings on Google. A recent customer said Dan Phelan did an oil change, new plugs and a gasket on a yearly service call and tested the system. A recent customer said Andrew texted ahead, arrived within the time given, explained the work and touched up some things since the generator was installed. A customer with a generator error during a major rain storm said Griffin went over what it cost and got to the root of the immediate problem. A 2026 customer said two electricians could not diagnose a burning smell from the generator, and Sean found the exhaust pipe was cracked in a number of places. A 2025 customer said tech Mark Liska was at the home within 24 hours of one call and diagnosed a resistor issue in a matter of 30 minutes. The work goes beyond generators: a recent customer said Powers installed a battery backup system at their home. Its own website lists generators, energy storage, solar panel installation, electrical work and EV charging installation, with a stated service area that includes Manchester, Concord, Nashua, Keene and Hanover. Albert V Powers, Jr holds New Hampshire electrician license 7682, active on the state registry. A recent 4-star customer said they had to wait a long time for parts. A recent customer under contract for twice-yearly maintenance of a whole house generator called it pricey. A 2025 customer wrote that under contract "they will decide to send people to your house without your knowledge and start billing you." A 2023 customer said the generator did not work when they lost power three days after a service visit, and the woman on the phone said a return visit would be a new ticket charged again for the entire service.