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Avatar for Anderson Water & Power
Anderson Water & Power
4.4(
618
)
Fixed Generator - Install

Serving Le Roy, NY and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1988

Free estimates

Emergency services offered

"We really like the professional job done by Paul, James III and Nate, they answered all our questions and explained everything to our understanding. They are no doubt well-trained in their field and dedicated to the reputation of the company. Kudos to our saleperson Tom, who also happens to be the president. We had on-location visits from 3 companies to have a whole-house generator installed and no doubt picked the best company."
Free Water Test!
Cummins
Cummins Install
Cummins
Transfer switch Cummins

+62

Response time2 days
191 neighbors recently requested a quote
Recommended by89%of homeowners
John Betlem Heating & Cooling Inc - Electrical
4.7(
157
)
Fixed Generator - Install

Serving Le Roy, NY and surrounding areas

Approved (Corporate)

In business since 1941

Free estimates

Emergency services offered

John Betlem Heating & Cooling is a 3rd generation company founded in 1941. They provide Residential HVAC, Electrical and Insulation Services to Rochester, NY and the surrounding towns. John?s slogan that still holds true today is to do ?whatever it takes? to satisfy customers.\n\nJohn Betlem is a premier family operated solutions provider, passionately committed to the health, safety, and comfort for all they serve.

43 neighbors recently requested a quote
Recommended by91%of homeowners
RJN Electrical Services, Inc.
4.7(
13
)
Fixed Generator - Install

Serving Le Roy, NY and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"I needed to update my electric desperately and as soon as I spoke with Art my mind was put at ease. Everything was explained to me in a way I was easily able to understand and know what the process would be from beginning to end. I had all of my questions answered in a timely and friendly manner. The work that was done was amazing and all at a reasonable price... more than worth the money and I would recommend them to anyone. They are the only electricians I will call to do any work from now on!!"
Response time1 day
Recommended by100%of homeowners
Avatar for Schedel Electric
Schedel Electric
5.0(
10
)
Fixed Generator - InstallPortable Generator - Install

Serving Le Roy, NY and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"Project was replacement of breaker box and electrical riser (the wires on the side of the house from the power company) whose insulation deteriorated and caused water leakage into breaker box during heavy rains. Got three proposals and went with Schedel. Very satisfied. Their honesty, flexibility, and punctuality were commendable. Unlike other contractors, they don't listen to the radio while working. Their quote included relabeling the circuit breakers, a plus since other contractors charge extra. Finally, their quote was significantly lower than the other two contractors. And the payment terms were flexible, to say the least."
Response time5 hrs
Response rate98%
Recommended by100%of homeowners
Showing 1-10 of 18
Generator Install questions, answered by experts

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

The Le Roy, NY homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.