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Avatar for Elevation Electric, LLC
Elevation Electric, LLC
4.8(
54
)
Fixed Generator - Install

Serving Centennial, CO and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"I chose Elevation Electric to install an outlet in our garage for our new Nissan Leaf because he was the ONLY installer recommended on both the Xcel Energy site and here. I heartily agree. Our new outlet is in a great spot and works perfectly. Joe worked quickly, had to drill through brick walls and cleaned up the mess. He was forced to cancel our initial appointment due to complications on the job before ours. So what did he do? He rescheduled for a Saturday because he hated to have inconvenienced us with the cancellation and he was already booked for the next week. Nice guy, good work!"
Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Productive Electric, LLC
Productive Electric, LLC
4.9(
14
)
Generator - Install - For Business

Serving Centennial, CO and surrounding areas

Approved

In business since 1992

Free estimates

Credit card accepted

"Tom was great at installing my RV outlet. Out of the 3 different quotes I received, he was able to get it done without trying to talk me into more expensive options. He was also accommodating with my somewhat busy schedule and very responsive throughout the install planning process. I would highly recommend Productive Electric."
Response time1 day
12 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Absolute Electrical, Heating & Cooling, LLC
Absolute Electrical, Heating & Cooling, LLC
4.3(
328
)
Fixed Generator - Install

Serving Centennial, CO and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"In 2 days I had absolute out for a/c problem and to install a new attic fan system. Hector, Jovanny were the 2 main contacts for the projects. Very professional, explained what they were doing and answered any questions I had. Will definitely use absolute again."
Mini Split
Heated driveway
Furnace Inspection
Laying conduit for exterior electrical work
Electrical Panel Replacement

+34

Response time1 day
2 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for TORQ Electric
TORQ Electric
4.8(
19
)
Portable Generator - Install

Serving Centennial, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Emergency services offered

"I’m extremely pleased with the work Jon from TORQ Electricians recently completed in my home. This project was much larger than his visit the week before, and once again he delivered outstanding results. He replaced switches and outlets throughout the house, many of which had begun to fail due to age, and the upgrades have given us real peace of mind when it comes to safety. Jon also made several thoughtful recommendations—installing dimmer switches in the kitchen and study, and suggesting a different dimmer style for our living room ceiling fan. These changes have noticeably improved both the functionality and the atmosphere of those rooms. He even identified and replaced a GFCI breaker in the panel that wasn’t up to code, ensuring everything is now safe and compliant. The work has refreshed the look of our interior, and we couldn’t be happier with the results. We’re very glad we chose TORQ Electricians and highly recommend Jon to anyone needing professional, reliable electrical work"
20 Amp Circuit
Circuit
Electrical Panel
Outlet
Power Stake

+8

59 neighbors recently requested a quote
Recommended by42%of homeowners
Avatar for True Bloom Energy Solutions LLC
True Bloom Energy Solutions LLC
5.0(
6
)
Fixed Generator - Install

Serving Centennial, CO and surrounding areas

Approved

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

12 neighbors recently requested a quote
Avatar for Mr. Electric of Littleton
Mr. Electric of Littleton
4.6(
11
)
Portable Generator - Install

Serving Centennial, CO and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Sean, was courteous and knowledgeable. he got the work done very quickly and to my satisfaction. he tested the outlets in front of me so I can verify the correct settings on test meter"
Can Lights
Response time10 mins
Response rate100%
2 neighbors recently requested a quote
...
Showing 1-10 of 152
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.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

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

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

The Centennial, CO homeowners’ guide to generator installs

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