A generator sits quietly for a year and then has to work on the one night it matters. That means the battery, the oil, the weekly test cycle and the transfer switch, all checked before the storm rather than during it. These are New Jersey homes we look after on a maintenance plan, and plenty of the generators on this list were installed by somebody else. Each one names the equipment on site and the town, so what you are reading is work we actually did rather than a list of what a plan covers.

939 completed generator service projects across 142 New Jersey towns, including 165 with a review written by the customer.

Standby Generator Installation in Allentown, NJ | Whole-House Backup

Philip from Allentown, NJ has been a Green Sun Energy Services client since January of 2020. The generator was commissioned that April, on a whole-house transfer switch, sized against a 13 kW calculation for the 2,100 square foot house – two refrigerators, a sump pump, a washer, a gas dryer and a dishwasher all carried through an outage. Two large bushes had to come out before the work could start, which is the ordinary reality of siting one of these: a generator needs clear space on every side for airflow and for the service visits that follow, and a spot

Standby Generator Service in Howell, NJ | A Three-Year Generator Service

Cezahir from Howell, NJ has been a Green Sun Energy Services client since June of 2023. The generator was installed by another company and commissioned in December of 2020, and we were called in for its three-year service, completed that June. The three-year interval is the one where a standby generator stops being new: the break-in oil is long gone, the battery is approaching the age where it starts letting people down, and the plugs and filters have a few hundred running hours on them. Catching a machine at that point, even once, is worth more than catching it at

Generator Service in Middletown, NJ | Client Since 2021

Caitriona from Middletown, NJ has been a Green Sun Energy Services client since May of 2021. The generator was installed by another company and commissioned in January of 2014, and the servicing came to us seven years later. It has been seen every spring since – June of 2021, June of 2022, July of 2023, July of 2024, May of 2025 and April of 2026 – working up from the seven-year service to the ten-year interval it now repeats, along with a courtesy visit in January of 2025. Six consecutive years on a machine somebody else installed is the whole

16 kW Standby Generator Installation in East Brunswick, NJ | Whole-House Backup

Kathryn from East Brunswick, NJ has been a Green Sun Energy Services client since April of 2020. The generator was commissioned that July: a 16 kW Generac Guardian on natural gas, on a 200-amp whole-house transfer switch. The load calculation asked for 12 kW across the 2,400 square foot house, so the machine carries a comfortable margin over the requirement. Whole-house rather than a critical-load panel is the choice worth noting on a job this size – it costs more at the outset and takes the question away permanently, since nothing has to be nominated in advance as the part

Standby Generator Service in Belle Mead, NJ | On a 2010 Generator, Client Since 2021

Justin from Belle Mead, NJ has been a Green Sun Energy Services client since December of 2021. The generator was installed by another company and commissioned in August of 2010, and the servicing came to us eleven years later. It has been seen every year since – December of 2021, January of 2023, January of 2024, December of 2024 and December of 2025 – starting at the eight-year service and settling into the ten-year interval, with one repair visit handled in June of 2023. A machine this old is past the point where the manual has new milestones to offer,

17 kW Standby Generator Installation in Manalapan, NJ | Whole-House Backup

Lillian from Manalapan, NJ has been a Green Sun Energy Services client since October of 2021. The generator was commissioned in May of 2022: a Generac Guardian rated 17 kW on natural gas, on a 200-amp whole-house transfer switch. The load calculation asked for 13 kW across the 1,800 square foot house, so the machine sits well above the requirement – which on a smaller house is worth doing rather than sizing to the minimum, because a generator running near its limit for three days ages faster than one that never has to try. Two refrigerators, a separate freezer, a

24 kW Standby Generator Installation in Holmdel, NJ | Generac Generator

Giovanni from Holmdel, NJ has been a Green Sun Energy Services client since April of 2022. The generator was commissioned that August: a Generac Guardian rated 21 kW on natural gas, on a 200-amp service-entrance switch with five smart management modules and surge protection. Five modules is the most on any installation we have written up, and the 5,189 square foot house explains why – the calculation asked for 19 kW, and covering a house that size from a single machine means the load has to be actively balanced rather than simply carried. Three sump pumps sit on that load,

Standby Generator Service in Atlantic Highlands, NJ | Servicing a Generator Installed by Another Company

Michele from Atlantic Highlands, NJ has been a Green Sun Energy Services client since July of 2024. The generator was installed by another company and commissioned in August of 2020, and the servicing moved to us four years later. Cellular monitoring was set up at the same time, so the machine reports its own condition rather than waiting to be asked. It has been seen every year since – July of 2024, June of 2025 and May of 2026 – working up from the four-year service to the six-year, 1,000-hour one. The plan covers annual maintenance, an extended parts-and-labor warranty

Standby Generator Service in Carteret, NJ | Seven Straight Years of Generator Service

Mary from Carteret, NJ has been a Green Sun Energy Services client since May of 2020. The generator was installed by another company and commissioned in March of 2019, and the servicing came to us a year later. It has been seen every spring since – May of 2020, April of 2021, April of 2022, April of 2023, April of 2024, March of 2025 and March of 2026 – working straight up the intervals from the first-year service to the seven-year, 1,200-hour one. Seven consecutive visits with nothing skipped is the best thing that can be said about a standby

Standby Generator Service in Monmouth Beach, NJ | Client Since 2021

Tino from Monmouth Beach, NJ has been a Green Sun Energy Services client since October of 2021. The generator was installed by another company and commissioned in April of 2020, and the servicing came to us the following year. Cellular monitoring was fitted at the start, along with an extended warranty, and the machine has been seen every fall since – October of 2021, November of 2022, December of 2023, November of 2024 and November of 2025. Three separate repairs were handled under the manufacturer’s warranty across 2022 and 2023, which is where the monitoring earns its place: a fault

Standby Generator Service in Mantaloking, NJ | Seven Straight Years of Generator Service on the Barrier Island

Dottie from Mantoloking, NJ has been a Green Sun Energy Services client since March of 2020. The generator was installed by another company and commissioned in June of 2019, and the servicing came to us the following spring. It has been seen every winter since – March of 2020, March of 2021, February of 2022, January of 2023, February of 2024, January of 2025 and December of 2025 – working straight up the intervals from the first-year service to the seven-year, 1,200-hour one, with one repair visit handled in between. Mantoloking is a narrow strip of sand between the ocean

16 kW Standby Generator Installation in Farmingdale, NJ | Whole-House Backup

Joyce from Farmingdale, NJ has been a Green Sun Energy Services client since September of 2019. The generator was commissioned that November: a 16 kW Generac Guardian on natural gas, on a 150-amp whole-house transfer switch with a smart management module. The load calculation asked for 14 kW across the 2,847 square foot house, with a double electric oven, a refrigerator, a washer, a gas dryer and a dishwasher on the list. A double oven is the appliance that most often pushes a kitchen past what its size suggests – two elements drawing together approach the demand of everything else