Generac

The Generac Air-Cooled Standby Generator delivers reliable backup power, advanced remote monitoring, and a compact design—all built in the USA to keep your home safe and running during any outage.

Generac Standby Generators – Finding the Right Size for Your Needs

Choosing the right standby generator isn’t about picking the biggest model on the list—it’s about sizing it correctly for your home or business. In Montana, the most important factors are your energy loads: well pumps, electric heat, kitchen appliances, air conditioning, and other high-demand equipment. An undersized generator can struggle or shut down under load, while an oversized one can waste fuel and add unnecessary cost. That’s why professional sizing is critical.
Here are some of the most common Generac models we install for our customers across Western Montana:

Generac Air-Cooled Generators (14–26 kW)

These generators are compact and budget-friendly, designed to cover essential circuits or provide full backup for average-sized homes. They use a fan-based cooling system.

Generac Liquid-Cooled Generators (25–150 kW)

These generators are compact and budget-friendly, designed to cover essential circuits or provide full backup for average-sized homes. They use a fan-based cooling system.

32 kW & 40 kW Liquid-Cooled Generac Generators

Sized for larger residences, estates, or small businesses where heavy loads like large well pumps or multiple HVAC systems come into play.

48 kW, 60 kW, 80 kW, and 100 kW Generac Generators

Heavy-duty systems for farms, commercial properties, or larger homes with electric heat, multiple pumps, or other high-demand equipment where downtime simply isn’t an option.

As Montana’s only Generac Premier Dealer four years in a row, Glacier Power Solutions has the experience to properly size and install your generator so it runs efficiently and reliably. We proudly serve Kalispell, Whitefish, Columbia Falls, Bigfork, Polson, Missoula, Bozeman, Helena, the Bitterroot Valley, Libby, Eureka, and surrounding communities across Western Montana. Wherever you are, our certified team ensures your system is matched to your actual energy needs—keeping you powered through the harshest outages without overspending on equipment.

Generac

The Generac Air-Cooled Standby Generator is a high-performance home backup solution designed to provide uninterrupted power during outages. Compact yet powerful, it delivers enough energy to run all your major home appliances—HVAC systems, refrigerators, lighting, and more—ensuring your home stays safe and functional no matter the circumstances.

About the Manufacturer

Founded in 1959, Generac Power Systems is a leading American manufacturer of backup power generation products for residential, commercial, and industrial applications. Headquartered in Waukesha, Wisconsin, Generac designs and builds its generators and engines in the USA, known for their innovation, quality, and reliability. As a pioneer in home standby generators, Generac continues to be the trusted choice for millions of homeowners seeking dependable backup power solutions.

Whether you’re preparing for hurricane season, winter storms, or unexpected outages, the Generac 26kW Standby Generator offers peace of mind and the power to keep life going—no matter what.

Air-Cooled vs Liquid-Cooled Generac Sizes

The right generator isn’t just about more kW—it’s about the right kW. Start by choosing air-cooled (compact, residential) or liquid-cooled (heavy-duty, commercial/estate). Final sizing is confirmed after a load calculation.

10 kW Air-Cooled

Best for: Small homes/cabins or essentials-only coverage. Typically powers: Lights, Wi-Fi/router, fridge/freezer, furnace blower, a few outlets.

14 kW Air-Cooled

Best for: Essentials + a few comfort loads. Typically powers: Fridge, gas furnace, microwave/coffee, garage door, sump/well (1 hp).

18 kW Air-Cooled

Best for: Mid-size homes wanting more comfort. Typically powers: Essentials above + well pump (up to 1.5 hp), laundry or small mini-split.

24 kW Air-Cooled

Best for: Whole-home coverage in many homes. Typically powers: Most circuits, kitchen essentials, multiple freezers, 2–3 ton A/C (with load mgmt).

26 kW Air-Cooled

Best for: Larger homes or higher-amp start loads. Typically powers: Whole-home in many cases, larger A/C, multiple pumps, shop circuits.

32 kW Liquid-Cooled

Best for: Large homes/shops with higher start loads. Typically powers: Whole-home + 3–4 ton A/C, multiple fridges/freezers, well/booster pumps.

38 kW Liquid-Cooled

Best for: Estates or small commercial offices. Typically powers: HVAC up to ~5 ton (with management), multiple pumps, server/IT loads.

40 kW Liquid-Cooled

Best for: Residences with high surge loads or small shops. Typically powers: Larger HVAC, shop tools, gates/lighting, cold storage.

48 kW Liquid-Cooled

Best for: Farms/shops needing dependable uptime. Typically powers: Multi-pump irrigation, compressed air, HVAC, freezers, lighting.

60 kW Liquid-Cooled

Best for: Mid-size commercial or large estates. Typically powers: HVAC banks, well systems, walk-in coolers, POS/IT.

80 kW Liquid-Cooled

Best for: Larger commercial, multi-building sites. Typically powers: HVAC + production equipment, lifts, lighting, pumps.

100 kW Liquid-Cooled

Best for: High-demand agricultural/industrial and critical operations. Typically powers: Multiple HVAC units, refrigeration banks, high-amp machinery.

150 kW Electric

Best for: Heavy commercial or campus-style properties. Typically powers: Large HVAC plants, process loads, full-building backup.

Key Features

Going on standby isn’t a weekend project. Mistakes can cost thousands.

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Automatic Power Transfer

Generac generators detect outages instantly and switch on automatically, keeping your home or business running without interruption.

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Whole-Home or Essential Load Coverage

Options range from smaller models for critical circuits to larger liquid-cooled units capable of powering your entire property.

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Quiet, Reliable Operation

Engineered for residential neighborhoods and commercial sites, Generac generators operate at low noise levels while delivering dependable performance.

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Fuel Flexibility

Runs on natural gas or propane, giving you reliable options based on your property and location. Diesel models are also available for added versatility.

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Mobile Link™ Remote Monitoring

Monitor your generator’s status and performance from anywhere with Generac’s app, ensuring you’re always in control.

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Proven Durability

Built and tested in the U.S., Generac generators are designed to handle harsh weather, heavy loads, and long runtimes common in Montana.

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