Generator Maintenance Services

Residential and Commercial Generator Installation, Maintenance, Repair, Upgrades.

THM offers several Maintenance Plans to fit the customer’s equipment best. These Maintenance Plans not only to provide our customers with protection and peace of mind, but they also extend the life of the equipment guaranteeing THM’s Asset Reliability Promise. These high standards and expectations are just one of many reasons THM Electrical and Maintenance Services, LLC is the fastest growing Authorized Generac Dealer, Service Provider, 24/7 Emergency Service, and Maintenance Provider in Alabama.

Plan I

Plan I comes with our Basic Maintenance Package. This service comes with one service interval, covering Generac’s warranty criteria. THM’s team will be on standby should you need any assistance. All you need to do is call or email us, and we will schedule one of our technicians for the next available appointment.

Plan II

Plan II comes with our Scheduled Maintenance Package. This service comes with two service intervals and free WiFi connection to Mobile Link. THM’s team will be on standby should your generator status change. All you need to do is call or email us, and we will schedule one of our technicians for the next appointment.

THM’s Level III & IV Maintenance Protection Plans have our customers talking!

Plan III

Plan III  comes with our complete Scheduled Maintenance Package and Generac’s 4G LTE Mobile Link, customer monitored.THM’s team will be on standby should your generator status change. All you need to do is call or email us, and we will schedule one of our technicians for the next appointment.

Plan IV

Plan IV comes with our Full-Service Maintenance Package and Generac’s 4G LTE Mobile Link, Dealer Managed. In this plan, THM provides 24/7 remote monitoring and provides you with access to priority service in an emergency. 24/7 remote monitoring through THM’s Generator Database utilizes Generac’s 4G LTE Mobile Link services and operates on a cellular network. This service plan is designed to give homeowners complete peace of mind. Our full-time team is immediately alerted if there are any status changes in your generator or ATS. Our team will then remotely address most issues through Generac’s Service Platform. Should we not be able to remote in, we will immediately dispatch a member of our service team. While onsite, should there be any other generator or electrical issues in or around your home,  we will take care of those for you also!

If a repair is needed, we will notify the customer and send a technician immediately to handle this repair. THM stocks all needed spare parts so there are no delays in getting you back up and protecting your most valuable assets.

New customers installing an HSB Generator system receive our Level II Maintenance Protection Plan for the first year free!

Please call (205) 709-3420 or email our team at to schedule your free consultation today.

Control Your Power. Control Your Life.


A permanently installed Generac home backup generator protects your home automatically. It runs on natural gas or liquid propane (LP) fuel and sits outside like a central air conditioning unit. A home backup generator delivers power directly to your home’s electrical system, backing up your entire home or just the most essential items, and now comes with FREE Mobile Link™, allowing you to monitor the status of your generator on a phone, tablet or computer from anywhere in the world.

Mobile Link Remote Monitoring FREE with every Guardian Series Home Standby Generator

Allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet, or PC. Easily access information, such as the current operating status and maintenance alerts. With Mobile Link, you are taken care of before the next power outage.

Automatic Operation

Don’t worry about having to be there to start and turn off your Generac home backup generator because it does that automatically—whether you’re home or away.

Refueling Not Necessary

Your Generac home backup generator runs on your existing natural gas or LP fuel supply. Save the gas cans for your other outdoor power equipment.

The #1 Selling Brand of Home Backup Generators

Generac created the home backup generator category. Today, our generators are preferred by most homeowners who invest in home backup power.

Power Directly to Your Home

You’ll never have to run an extension cord through a window or door again. Your Generac home backup generator safely delivers power right to your home’s electrical panel.

24/7/365 Customer Support

Power outages aren’t a 9-to-5 thing. That’s why we’re standing by all day every day from our headquarters in Wisconsin to answer any questions you might have.


A Generac home backup generator senses a power outage, turns on automatically, and delivers backup power to your home. It will run until utility power returns – whether that’s in two hours or two weeks.


We know a home backup generator is a big investment. Here’s what you need to know to make an informed decision about your Generac home backup generator purchase.

How Do I Choose the Right Generator for Me?

Generac has an online sizing calculator that can help you determine the right home backup generator for your unique needs. The best way, though, is to work with one of our 5000 dealers. They’ll help you select the right generator and provide you with a free, in-home assessment.

What’s Involved in Installing a Home Backup Generator?

Installing a home backup generator is an exciting time. Your installer will prepare the installation site outside your home, place the generator, run the natural gas or LP fuel line, install the transfer switch, and make all of the necessary electrical connections. And they will make sure that your backup generator runs properly, and is ready for its first power outage.

How Much is Everything Going to Cost?

Generac home backup generators start at $1,949–the most cost-effective on the market. Installation costs vary by system size, installation considerations, and local building codes. We recommend getting a free, in-home assessment from a Generac dealer near you.

How Do I Get Started?

You can begin exploring the full selection of Generac home backup generators. Use our interactive sizing guide to narrow down the selection. Then contact a Generac dealer for a free, in-home assessment. And if you have any questions, you can contact us today.


Learn more about how Generac home backup generators work, and hear from Real Generac Owners.


There are a lot of choices out there for backup power. Find out how a Generac home backup generator can help you during a power outage.


Mary Lou of Pennsylvania feels safe and comfortable in her home now that she has a Generac automatic standby generator.


After returning home from a vacation with his family, Rich L. learned that a storm had knocked out the power. His home had significant damages. That won’t happen again, now that Rich has an automatic standby generator.