Champaign Home Generator Installation and Repair

Authorized Generac Dealer Serving Central Illinois

When the power goes out in January, you figure it out. You dig out extra blankets, you eat what you can, and you wait. But if you have a furnace that needs electricity to run, or food in a full refrigerator, or equipment that has to stay on, "figure it out" is not a plan.

The homeowners who call us after an outage are not calling because they did not know generators existed. They are calling because they went through a difficult power outage once and decided it would not happen again.

At Mattex Heating, Cooling, Plumbing, Sewer and Electrical, we install Generac whole-home standby generators. Generac is the most widely installed home standby brand in the country. We are an Authorized Generac Dealer and have been providing electrical work here since 1994. We know these systems and Central Illinois winters well enough to know which generator fits each home.

Ready to schedule a consultation? Call (217) 987-8326 or contact us online. Our home generator installation and repair services in Champaign, IL, come with a 100% satisfaction guarantee. We offer same-day support.

Why Generac Standby Generators Are Different

When it comes to backup power, you might picture a portable generator. You drag it out of the garage, fill it with gas, and run extension cords across the floor. That works. But it also means you have to be home when the power fails, it has to be daylight, and you have to have fuel on hand.

Generac home standby generators are a different category of product.

A Generac standby system is permanently installed outside your home, connected to your natural gas or LP fuel line, and wired directly into your electrical panel through an automatic transfer switch. When utility power fails, the system detects the outage and switches your home to generator power within seconds. When the utility comes back, it switches back and shuts itself down.

You do not start it. You do not fuel it. You do not have to be home.

That is the part that matters most. If you are at work when the power goes out, your heat runs. If it happens at 2 a.m., you do not wake up to a cold house. The system does what it is supposed to do whether you are watching or not.

Generac units run on the fuel line already connected to your home, so there are no storage or refueling problems. They are built for extended runtimes, not for a few hours of coverage.

Which Generac Generator Is Right for Your Home?

Generac makes several sizes and configurations of home standby generators. The right one for your home depends on a few specific factors, and we go through them all during the consultation.

The factors we look at during a consultation include:

• Home size and total load – A larger home running central HVAC, appliances, and lighting simultaneously needs more capacity than a smaller home with only a handful of essential circuits.
• What you want to back up – You might want the entire house covered. Or you might want to protect the furnace, the refrigerator, the sump pump, and a few outlets. Generac makes configurations for both. We do not push one over the other. We find out what you need and size it accordingly.
• Your heating setup – A gas furnace has different backup requirements than an electric heat pump or a boiler. We factor in how your system runs before recommending a generator size.
• EV charging – If you charge an electric vehicle at home and want that capability during an outage, that changes the load calculation. Not every generator is sized to handle it, and we account for it upfront.
• Fuel source – Generac standby generators run on natural gas or liquid propane. If your home has a gas line, we connect directly to it. If not, we talk through LP tank options and sizing as part of the installation plan.

Generac also offers Wi-Fi-enabled models with Mobile Link. Mobile Link sends you real-time status updates, alerts you if the system runs a self-test or flags an issue, and sends maintenance reminders — all from your phone. So before a storm hits, you know the system is ready. That is not a small thing.

By the end of the consultation, you will know which Generac system fits your home and what the installation entails.

What Installation Looks Like

Generator installation is not a same-day job. While the physical work typically takes a few hours, the preparation (permitting, site prep, fuel line coordination, utility notifications) takes several weeks, depending on the scope and your municipality's requirements. We tell you that upfront, before anything starts.

We handle the following, from start to finish:

• Site selection – We identify a location that meets Generac's clearance requirements, local codes, and practical considerations such as drainage and access for future maintenance. The generator needs a stable, well-drained surface with enough clearance to service it safely.
• Site preparation – We prepare a concrete pad or pea gravel base, depending on the installation.
• Transfer switch installation – The automatic transfer switch goes in next to your main electrical panel. It detects the outage and manages the switch between utility power and generator power.
• Fuel line connection – We connect the generator to your natural gas or LP supply.
• System startup and testing – Once everything is connected, we run the system through its startup sequence, confirm it is operating correctly, and walk you through how it works and what to expect.

As an authorized Generac dealer, we provide a detailed estimate before any work begins. The estimate covers installation costs, fuel type, your property's specific requirements, and any permitting fees. No surprises on the invoice.

Whole-Home Backup vs. Select-Circuit Backup

One of the first decisions you will make is whether you want full whole-home backup or protection for specific circuits only.

Whole-home backup means the generator is sized to power everything in your house at once: HVAC, kitchen appliances, lighting, electronics. This is the right choice for larger homes, households with medical equipment, or homeowners who want no interruption to normal life during an outage.

Select-circuit backup means the generator is wired to specific circuits rather than the entire panel. A smaller, less expensive unit protects the systems that matter most to you: furnace, refrigerator, sump pump, or a few outlets. If you experience occasional outages and have modest backup requirements, this is a practical choice.

We help you figure out which one fits your situation. It is not a question with a universal answer, and we do not push one option over the other. The goal is a system you can count on, sized for what you need.