*The Angi rating for Generator Install companies in Tempe, AZ 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 Tempe, AZ 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 May 22, 2026
Serving Tempe, AZ and surrounding areas
Approved
Super Service Award Winner
In business since 2015
Free estimates
Warranties offered
"There's a certain comfort knowing you're prepared, and thanks to Arizona Backup Power Company, I have that. The generator they installed works like a charm. Reliable service, awesome team and affordable prices."
+15
Serving Tempe, AZ and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Warranties offered
"This young man knows his stuff and takes his time to do an exceptional job. He installed 2 Tesla Wall Chargers requiring breakers in the outside power panel with metal conduits. Then he mounted the Teska chargers on drywall. I thought I could do the install myself after viewing YouTube videos. I am glad the YouTube idea didn’t last long. If you think the install is simple - it will it be. Get a professional like this young man and get it done by a true professional."
+5
Serving Tempe, AZ and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"I have a a Brick Home and Mike did an incredible job installing two new outlets in my home with very competitive pricing, highly recommend and will use him again."
+3
Serving Tempe, AZ and surrounding areas
Approved
In business since 2021
Free estimates
Credit card accepted
"Suggested the best solution for our electrical installation. Went out of their way to accommodate this project."
Serving Tempe, AZ and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"David quoted us a great price for the install. Dustin came out a few days later and did a great looking install and even mounted my charging unit on the wall for us. I recommend Andrew's Electrical."
Serving Tempe, AZ and surrounding areas
Approved
Super Service Award Winner
In business since 2019
Free estimates
Credit card accepted
"Extremely knowledgeable, excellent work, excellent price and next day install, permits and inspections of an emergency panel replacement during the holidays. Highly recommended."
Serving Tempe, AZ and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"They did a really fantastic job on a bit of a tricky installation, showed a coupling of true technical understanding and informed imagination"
+39
Serving Tempe, AZ and surrounding areas
Approved
Super Service Award Winner
In business since 2006
Free estimates
Emergency services offered
"Quick and Fast. Installation guys are friendly and professional."
+1
Serving Tempe, AZ and surrounding areas
Approved
In business since 2020
Free estimates
Warranties offered
"Fantastic install of home generator and kitchen outlet replacement."
+11
Serving Tempe, AZ and surrounding areas
Approved
In business since 2015
Free estimates
Credit card accepted
"We hired Kelvin to install some ceiling fans. He was pleasant, skilled, and efficient. We were so pleased with his work that we have used him for several additional electrical projects. Each time he provided estimates, completed the work on a timely basis and we were extremely pleased with the results. He is experienced, knowledgeable, and very pleasant to work with. We recommend him without reservation."
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 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.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Natural gas generators can tap into existing gas lines so they never run out of fuel. Here’s how they work and how they’re used.
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 house generators can power homes when electric problems hit, but they aren’t for everyone. Here’s what you should know when you’re thinking about buying.
