Every winter starts with the same phone call
It’s usually early. The building’s dark, the grid’s down, and the generator that’s supposed to be carrying the load either won’t turn over or quit twenty minutes in. Somebody’s on the phone with our on-call tech asking how fast we can get there.
We always get there. But most of the time, the problem we find was sitting there in October, plain as day, waiting for somebody to look.
We run service out of Colorado, Texas, and Florida, and each region has its own version of that call. Here are the ones our techs see every year, what actually went wrong, and what a fall visit would’ve caught.
Colorado: “It cranks, it just won’t fire”
This is the Front Range classic. Single digits overnight, power drops, and the unit’s turning over slow and sluggish without ever catching.
Our Brighton techs pull up, put a hand on the engine block, and it’s ice cold. Block heater’s been dead for who knows how long. Nobody noticed because nobody needed the generator until now. Cold diesel, thin air, a battery that’s lost half its cranking power in the cold. That engine never had a chance.
Sometimes there’s a second problem stacked on top. Fuel that went in back in summer starts clouding up once it gets cold enough, and now the filters are choking too.
Here’s the frustrating part. Every one of those things takes a few minutes to check in October. A block heater element, a battery load test, a fuel sample. In January it’s an emergency call, a part that may or may not be on the truck, and a facility sitting dark while we sort it out.
That’s why our fall visits in Colorado go past a basic inspection. If we find a bad heater or battery, we swap it on the spot. We’ll load bank test units for sites that need proof the generator carries full load at altitude, which matters a lot for data centers and healthcare. And if the honest answer is that the unit’s undersized for elevation or worn out, we can put a rental on site for the season and talk through new or used replacements, including buying your old unit.
Call our Brighton service team to get on the fall schedule.
Texas: “The generator’s running, so why are the lights still off?”
The Texas version is sneakier. A cold front blows through, the grid gets tight, power drops, and the generator actually starts. Sounds good. Except the building never switches over.
When our Georgetown techs dig in, it’s usually the transfer switch. The generator did its job but the ATS never saw the outage, or saw it and never moved. Nobody tested it under real conditions, because it’s Texas and the cold always passes.
The other one we see is a unit built for heat getting hit with a hard freeze. No block heater on it at all. Coolant that’s been topped off with water all summer. A battery the August heat cooked down to almost nothing. It starts, struggles, and shuts itself down.
Anyone who was here for Winter Storm Uri in 2021 knows how fast one bad week turns into a disaster. Standby power is supposed to be the thing you don’t have to think about. But it only works that way if somebody does the thinking in the fall.
So when we do a Texas fall visit, we test the transfer switch, not just the engine. We’ll check the coolant for a hard freeze and swap out batteries that won’t last. And we’ll talk with you about adding cold-weather protection if the unit was never set up for it. For critical sites we run a load bank test so you know it’ll carry the building. And if you head into winter with a unit you don’t trust, a rental on site buys you peace of mind while we figure out the long-term fix.
Reach our Austin-area service team before the next norther.
Florida: “It ran fine all hurricane season”
We hear that line from North Florida customers every winter. And they’re usually telling the truth. The generator did great in September. Then a January freeze rolls into Jacksonville or the Panhandle, the grid gets slammed, and the same unit quits.
What our techs find tells the story. Some of those units ran long hours during a storm and never got their oil, filters, and coolant serviced afterward. Others sat on standby all summer in salt air and humidity, exercising with no load. Now there’s moisture in the fuel, carbon built up inside, and terminals that look fine from a few feet away but are green and crusty up close.
None of that shows up on a nice day. It shows up the first night the unit has to work hard in the cold.
That’s why a Florida fall visit is really a post-storm reset. Our Jacksonville and Pensacola techs service units that ran hard, clean up coastal corrosion, and check the battery and block heater before freeze season. If you rented a unit for the storms, we can coordinate the pickup or keep it on site through winter. And if this season showed you the generator’s past its prime, we sell new and used units and buy old ones, so you’re not waiting until next June to deal with it.
Get on the schedule with our Jacksonville or Pensacola team.
Same problem, different month
Put those three calls side by side and you’ll see the pattern. Not one of them was a mystery failure. Dead block heater, weak battery, bad fuel, an untested transfer switch, salt-eaten connections. All of it was findable in the fall.
The difference is timing. In October it’s a scheduled visit, parts get ordered with time to spare, and nothing’s on the line. In January it’s an after-hours call, your facility’s down while we work, and whatever we need might be a day out.
Our techs would much rather meet you in October.
Generator winterization FAQ
When should I winterize my industrial generator? Schedule winterization in October or early November, before the first hard freeze in your area. That leaves time to order parts if a technician finds a bad battery, block heater, or fuel problem.
Do generators in Texas and Florida really need winterizing? Yes. Texas and North Florida both see hard freezes, and units installed for hot climates often lack block heaters or have weak coolant mixes. Winter Storm Uri in 2021 showed how many Texas standby units weren’t ready for extended cold.
What causes a diesel generator to fail in cold weather? The most common causes are weak batteries, failed block heaters, gelled or contaminated diesel fuel, and coolant that isn’t rated for freezing temperatures. A failed transfer switch can also keep a running generator from picking up the load.
How does altitude affect a generator in Colorado? Engines produce less power at higher elevations because the air is thinner. A generator in Colorado may deliver less than its rated output, so units should be sized with altitude in mind.
Is a load bank test part of winterization? It should be for critical facilities. A load bank test proves the generator can carry real load and clears carbon buildup from units that have only been exercised without load.
Get your unit on the schedule
Fall books up fast, and every year we get calls from people who waited until the first cold snap. Don’t be that call.
Our EGSA-certified technicians work on units from 20kW up to 4MW+, whatever the brand. Branches are open 7AM to 4PM on weekdays, and on-call techs cover nights and weekends.
| Branch | Address | Emergency line |
|---|---|---|
| Brighton, CO | 625 Baseline Rd, Brighton, CO 80603 | 720-990-5106 |
| Jacksonville, FL | 857 Eastport Rd, Jacksonville, FL 32218 | 904-902-8116 |
| Pensacola, FL | 1505 North W St, Pensacola, FL 32505 | 904-902-8116 |
| Austin, TX | 550 County Road 196, Georgetown, TX 78626 | 737-437-8380 |