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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.

49 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
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Generator Install questions, answered by experts

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

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.

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.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Costs range from $500 to $2,500, depending on generator type and installation complexity.

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.