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Avatar for Freedom Home Services
Freedom Home Services
4.7(
32
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+3 more

Serving Altavista, VA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"The owner, is technically competent. I have technical background and I bombarded Brendan with lot of questions on scientific and mathematical and technical functions of heat pump, but Brendan immediately came up with satisfactory technical and scientific responses which cleared doubts and gave me optimism. Brendan and his team made feasibility study at the house and took measurements to ascertain the size of the heat pump and necessary modifications to the existing system in order to make new heat pump and system work efficiently with low costs of electricity and maintenance and with very low noise!!! The installation done by Brendan and his team appeared to be supported with stability. Trial run of new system initially made the team of Freedom Heating & Air to do fine tuning and now the system is working comfortably with very low noise, etc ."
Heat Pump Cleaning
HVAC Cleaning
Bathroom Lighting
Bathroom Lighting
Vanity Lighting

+4

Response time10 hrs
15 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for Holistiq Building Systems and Services LLC
Holistiq Building Systems and Services LLC
5.0(
8
)
Fixed Generator - Install

Serving Altavista, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"I would like to recommend Joshua Smith as a Tesla installer and overall electrician. He did a great job for my wife and I on the installation of our powerwall 3 and car chargers within our garages as well as trouble shooting some other electrical problems at our new home at Smith Mountain Lake. Additionally, he answers phone calls and shows up on time. Again, we highly recommend Joshua."
Response time5 hrs
10 neighbors recently requested a quote
Avatar for Red Clay Mechanical LLC
Red Clay Mechanical LLC
5.0(
3
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Altavista, VA and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

"I had an excellent experience working with this company from start to finish. The team was professional, responsive, and truly cared about providing quality service. They communicated clearly throughout the entire process and made everything stress-free and easy to understand. What stood out most was their attention to detail and dedication to customer satisfaction. It’s hard to find businesses these days that genuinely go above and beyond, but this company absolutely did. The work was completed on time, exceeded my expectations, and the quality was outstanding! I highly recommend this company to anyone looking for reliable, honest, and professional service. I will definitely be using them again in the future!"
Mounted 75" TV
Handyman Projects
Handyman Projects
Handyman Projects
Handyman Projects

+8

5 neighbors recently requested a quote
Wynn's Electric, LLC
4.9(
6
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Altavista, VA and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"Kenneth Wynn came to install a generator transfer switch box inside my house and a plug for outside. He was very professional and was training two younger guys who were very nice and courteous. I was thankful that the Lord had put me in contact with somebody that I could trust! I would definitely call him again for any electrical work that I might need in the future."
Response time10 hrs
Recommended by100%of homeowners
Showing 1-10 of 23
Generator Install questions, answered by experts

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.

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.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

The Altavista, VA homeowners’ guide to generator installs

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