*The Angi rating for Generator Install companies in Madison, VA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
*The HomeAdvisor rating for Generator Install companies in Madison, VA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
Last update on March 24, 2026
Serving Madison, VA and surrounding areas
Approved
In business since 2006
Free estimates
Warranties offered
"SciFiHomes, Inc. did a great job installing our whole-house generator. They are friendly, efficient, reliable. They take the time to do things right and make sure the homeowner understands the equipment."
Serving Madison, VA and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Emergency services offered
"Installation went very well, workers where very kind and friendly!"
+9
Serving Madison, VA and surrounding areas
Approved
In business since 2012
Free estimates
Emergency services offered
"Raufi services was efficient, highly skilled, and helpful. They helped to install a Co2 and Smoke alarm system that will help me sleep at night knowing my family is protected. Thank you so much!"
Serving Madison, VA and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"Danny was affordable and quickly removed my old fan and installed the new one."
+6
Serving Madison, VA and surrounding areas
Approved
In business since 2001
Free estimates
Warranties offered
"William Burden is the third generation owner of WBLightningRods and his company has been in business since 1950. He is very courteous, professional, was on time, and has a very good crew. William was present for the entire installation. We chose the copper system. We are glad for the peace of mind a lightning rod system will provide."
+79
Serving Madison, VA and surrounding areas
Approved
In business since 2014
Free estimates
Small jobs welcome
"Ed and his wife are excellent at what they do amazing install time and very knowledgeable. Will definitely use them for further installs."
+34
Serving Madison, VA and surrounding areas
Approved
In business since 2003
Free estimates
Customers say: Quality work
"Very efficient, very knowledgeable, very friendly, very prompt"
Serving Madison, VA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Joe, Mark, and Their Team did a Splendid Job for Us on this Business Phone Line Install. There are Very Knowledgeable and provided the Needed Assessment and "Fix" in a Very Timely Manner. I Highly Recommend Accent Tel USA! God Bless You! Philippians 1:3-6! Have a Wonderful Day in the Neighborhood & "Stay on the Nice List"! :)"
Serving Madison, VA and surrounding areas
Approved
In business since 2014
Free estimates
Credit card accepted
Stinnett Electrical Services, 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 your interests and make your concerns the basis of our business.
Serving Madison, VA and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
"I am happy to recommended JBE Services to anyone. The team expertly installed a mini split heating system including full electrical work. They did everything required to complete the job in a timely manner including coordinating the drop off of additional parts rather than reschedule for a different day. The team was friendly and conscientious. I'm happy to have found a electrician and HVAC specialist that I trust in this area. Thanks, again!"
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
Here’s what you can run with different wattages and types of generators:
Portable generator:
2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.
Partial to whole-house generator:
20,000 watts and above will make it seem like your home’s power is still on.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
From average costs to expert advice, get all the answers you need to get your job done.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.
Portable generators are handy for many reasons, but they require care to prevent fire, electrocution, and more. Stay safe with this guide on how to use a generator.
Installing a portable generator can power key appliances during outages. Learn about the best backup generator questions to discuss with a pro.
