*The Angi rating for Generator Install companies in Stevenson Ranch, CA 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 Stevenson Ranch, CA 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 July 16, 2025
Serving Stevenson Ranch, CA and surrounding areas
Approved
In business since 1995
Free estimates
Warranties offered
"Lt generators installed an automatic standby generator"
+12
Serving Stevenson Ranch, CA and surrounding areas
Approved
Super Service Award Winner
In business since 1996
Free estimates
Credit card accepted
"Mark at MW electric was outstanding. He took a difficult challenge and did a super great job installing a new transfer switch to my house electrical panel, which will allow me to hook up a generator and run my house if there is an electrical outage. I couldn't be happier, and he is great to work with and reasonable. I will hire him again."
+5
Serving Stevenson Ranch, CA and surrounding areas
Approved
Emergency services offered
Warranties offered
Offers commercial services
"Sergio and his assistant installed an EV charger at my place, and they did an amazing job. I’m so glad I hired them. Their price was reasonable compared to other contractors. I highly recommend them and would definitely use their company again for any future jobs."
+1
Serving Stevenson Ranch, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2004
Free estimates
Offers commercial services
"Robert did an amazing job installing several 3-way Leviton WiFi smart switches in the stairwell of my home. He was very professional, detail oriented with the install, and did a great job sharing the info with me on how he set things up! The work areas were all cleaned up and he took his time to make sure everything was pristine. I definitely recommend Robert if you’re looking to have any electrical work done. Thank you!"
Serving Stevenson Ranch, CA and surrounding areas
Approved
In business since 1996
Free estimates
Emergency services offered
"They were very responsive. The owner of the company was here the day after we called to inquire, and we liked his answers to all of our questions. We made an immediate decision to hire them to install a 'stand-by' generator. First, the delivery of the generator was amazingly fast and then the installation was done promptly and professionally. There were enough people here to complete the installation. Within a few days a stucco repair man was here to patch the necessary holes. All-in-all, the overall service, responsiveness and professionalism were of the highest standards. I highly recommend Mr. Ariel Kahane and his crew of ADI Electrical Services."
+13
Serving Stevenson Ranch, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Credit card accepted
"Zero Electric really came through for me. James is professional, knowledgeable, and competent as is the rest of his crew. I trust and would definitely use Zero Electric again in the future."
+1
Serving Stevenson Ranch, CA and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"I would like to thank RT Wilson construction, they are fast and efficient. They are professionals and excellent at their jobs! Their work was outstanding money well spent, these's days itâ s hard to find a honest company, this company was excellent they go far beyond to get you what needs done for your home,. I love the work and I am definitely gonna refer them to my family and friends. Thank you so much"
Serving Stevenson Ranch, CA and surrounding areas
Approved
In business since 1994
Free estimates
Warranties offered
"Chris at RR was great. Very knowledgeable and professional. when it came time for the installation it was swift and easy."
+1
Serving Stevenson Ranch, CA and surrounding areas
Approved
In business since 1972
Free estimates
Emergency services offered
For nearly 50 years, Conejo Services has helped families keep their homes running smoothly without the stress of juggling multiple contractors. From heating and cooling to plumbing, electrical, roofing, generators, insulation, and more, we bring trusted home services together under one roof with our team of expert tradesmen and tradeswomen.\n\nOur approach is simple: do the work the right way, treat customers like neighbors, and stand behind every job. With one call, homeowners work directly with our experienced, in-house professionals.\n\nFounded by Wally Dickey in Thousand Oaks in 1979 and now led by son Branden Dickey, Conejo Services is a multi-generational family-run company built on long-term relationships, honest recommendations, and dependable service — the kind we’d expect in our own homes.\n\nOne call, one trusted team. Conejo Services makes taking care of your whole home easier.
+24
Serving Stevenson Ranch, CA and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
"I hired home pro remodeling to put pavers on my back yard and to install flloring thorough out the whole house I'm super setasfied with the work and the service . The company also provided me great financial options which I used thank you kobi Leo and Lucas for your great service . Highly recommend them for everyone"
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 whole-house generator in Los Angeles, CA varies based on factors like generator size, fuel type, and installation complexity. Learn the typical price range and what influences your total cost.
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.
Generators should give you peace of mind, but you’ll only get that if your installer knows what they’re doing. Learn how to hire a pro and what red flags to look for.
Whole home generator installations require a professional hand. Read this guide to help you decide which generator is best for your home.
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.
