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Top-Rated Generator install pros in Dover - Updated Nov 2026

Avatar for JA Bertsch Heating and Cooling LLC
JA Bertsch Heating and Cooling LLC
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Dover, ID and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

J.A. Bertsch Heating & Cooling is a family-owned HVAC and electrical services company based in Coeur d'Alene, Idaho. Founded in 2005 by owner Joel Bertsch, the company specializes in residential heating, air conditioning, heat pumps, indoor air quality, water heaters, electrical services, generators, and preventative maintenance programs. Serving communities throughout North Idaho, including Coeur d'Alene, Post Falls, Hayden, Rathdrum, Sandpoint, and surrounding areas, the company has built a strong reputation for customer service, technical expertise, and community involvement.

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+2

4 neighbors recently requested a quote
National Electric & Construction Inc
New to Angi
Fixed Generator - InstallPortable Generator - Install

Serving Dover, ID and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

With 25 years of experience, National Electric & Construction Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

27 neighbors recently requested a quote
Avatar for Honest Electric LLC
Honest Electric LLC
5.0(
52
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Dover, ID and surrounding areas

In business since 2024

Free estimates

Emergency services offered

"We ran into some minor issues with the work (parts that had to be back-ordered), and they kept me up-to-date on scheduling, etc., and bent over backwards to get the work done. Even worked the evening one day without any requirement to do so. Very professional, very respectful, and will definitely hire them again."
Generac Generator
Re-device
After New Fixture
Re-device
Re-device

+15

Response time5 hrs
Response rate98%
Avatar for Interstate electrical contractors
Interstate electrical contractors
4.5(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Dover, ID and surrounding areas

In business since 1982

Free estimates

Credit card accepted

"Interstate Electrical exceeded all of my expectations! You can tell they take pride in their work and truly care about their customers. It’s hard to find a company this reliable and trustworthy these days—Interstate Highly recommended!"
Response time20 mins
Recommended by12%of homeowners
Avatar for New Frontiers Innovations, LLC
New Frontiers Innovations, LLC
5.0(
5
)
Portable Generator - Install

Serving Dover, ID and surrounding areas

In business since 2023

Free estimates

Small jobs welcome

"Matt did excellent work, on time as promised, and everything he left, was perfectly neat. He will be in town for some time to come, and he is building a reliable business and reputation."
Response time3 hrs
Response rate96%
Recommended by100%of homeowners
Avatar for Heritage North Electric
Heritage North Electric
5.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Dover, ID and surrounding areas

In business since 2019

Free estimates

Small jobs welcome

We're a full service, licensed and insured electrical company servicing Northern Idaho. Whether commercial or residential, we do it all and specialize in alternative energy (such as generators, solar, and backup batteries) as well as automation/smart home technologies. We look forward to earning your business! Book with us online or feel free to give us a call today!\n

Dock
Kitchen
Generac Generator
Commercial exterior
Commercial interior

+13

Response time9 hrs
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Generator Install FAQs, answered by experts

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.

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. 

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.

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

The Dover, ID homeowners’ guide to generator installs

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