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Avatar for Invictus Electric Service Company, LLC
Invictus Electric Service Company, LLC
4.7(
25
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+3 more

Serving Spring Hill, TN and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"David has done several jobs for us and we have been really happy with his work and would recommend him. He did all the electrical work on a new garage we built, this was a big job. He pulled the permits, ran a new line, installed a new panel, installed lighting and switches. He also completed the wiring and lighting for a remodel we did. Would hire him again, he’s nice guy and does good work."
Electrical Project
Electric Vehicle Charger Install
Electric Vehicle Charger Install
Electrical Project
Electrical Project

+63

3 neighbors recently requested a quote
Recommended by60%of homeowners
Avatar for Top Notch Electrical Group llc
Top Notch Electrical Group llc
5.0(
5
)
Portable Generator - InstallFixed Generator - InstallFixed Generator - Repair+1 more

Serving Spring Hill, TN and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"This is definitely the guy to hire if you need any electrical work done! He was kind and exceptionally professional. It was supposed to be a simple ceiling fan replacement. However, Larry found a serious problem with my wiring that I'm blessed didn't actually cause a fire in my home. He showed me the problem and fixed it even though that really should have been a separate call. I am over the top pleased with the service and work performance. I HIGHLY recommend Top Notch Electrical and Larry!!! 5 STARS!!!"
New panel upgrade
38 neighbors recently requested a quote
Avatar for Garcia Electric
Garcia Electric
5.0(
10
)
Portable Generator - Install

Serving Spring Hill, TN and surrounding areas

Approved

In business since 2024

Customers say: True professional

"Garcia Electric is great to work with...especially as a landlord. I didn't have to be present for the repairs and was able to pay over the phone. Same day service and fair prices. I will use the again for sure."
panel upgrade
panel upgrade ( finished)
Can Lights install
Rough in switch wires
Can lights trim

+17

Response time4 hrs
Response rate96%
48 neighbors recently requested a quote
Avatar for Rapid Response Plumbing Heating and Cooling
Rapid Response Plumbing Heating and Cooling
4.7(
7
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Spring Hill, TN and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"This is the 2nd house I have had Robert install an entire AC/Heater Unit in. This last unit was a 5 ton that lasted me almost 18 years - When talking w/ Robert he wanted to ensure that the size of the existing unit was accurate prior to replacement. He came over in his off time just to double check the ceiling heights and sq. footage and confirmed that we were good to go. I appreciated that level of detail versus other companies that would just "punch in an order" and worry about it later. He will not try and sell you on things you dont want or need and was great to work with to try and save me a few bucks. I remember the first house he installed an AC/Heating unit in, he said "I live in this town and will definitely see my customers in the same grocery store and restaurants and dont want people to have anything other than a positive experience doing business with me". That always stuck with me and I am happy to give him the business."
Logo
Install HVAC unit
5 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Premier Generators
Premier Generators
New to Angi
Fixed Generator - Install

Serving Spring Hill, TN and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

Premier Generators has helped homeowners and businesses across the Southeast protect what matters with reliable Generac home standby generators for over 30 years.\n\nWhen power goes out, your generator is designed to start automatically and restore power within seconds, helping keep your home or business running smoothly. We start by learning what matters most on your property, then guide you through a clear process: right-sized recommendations, permitting, installation, and complete start-up and testing.\n\nOur relationship does not end at installation. We provide service and maintenance to help your system stay ready, including routine inspections, preventive maintenance, and repairs. Ask about maintenance plans and support options, plus warranty coverage that can extend up to 10 years.\n\nWhether you’re protecting a whole home or a commercial site, we’ll help you choose the right solution for your needs and leave you feeling confident, informed, and prepared long before the next outage.

169 neighbors recently requested a quote
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Generator Install questions, answered by experts

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.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

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.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

The Spring Hill, TN homeowners’ guide to generator installs

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