Generator Repair

For a residential standby unit: one full service a year covering oil and oil filter, air filter, spark plugs on gas engines, a battery load test, coolant on liquid-cooled models, a controller and alarm check and a transfer test under load, with valve clearances checked at the longer intervals. Commercial and industrial sets normally run quarterly or semi-annual inspections with an annual full service, plus annual load bank testing where insurers or code require it. Between visits, the machine should be exercising itself weekly, and somebody should notice if that stops happening.

We install Generac, Kohler, Cummins and Champion, and we service those plus Caterpillar, Briggs and Stratton, Detroit, MTU, Onan and most other equipment that turns up on Inland Empire sites, including machines whose original installer is long out of business. On inherited equipment the first visit is usually a full inspection and a load test, since that is the only honest way to find out what condition it is really in.

The battery, by a wide margin. Standby generators sit idle, batteries age faster in Inland Empire heat, and three to five years is a realistic life here. After that it is fuel: stale gasoline in a portable, degraded diesel or plugged filters in a standby set, or a gas supply pressure problem. Then controllers left in the wrong mode after a previous service, and sensors shutting the engine down to protect it. All of those are ordinary service items rather than serious engine faults, which is why an annual visit prevents most of them.

Yes, for both homes and businesses. A residential plan is normally one visit a year with priority scheduling; commercial plans run quarterly or semi-annually with 24-hour emergency response, annual load bank testing where required, and documentation for insurers and landlords. Contracted customers are first in the queue during a regional outage event, which is the point at which priority stops being a marketing word. Plans also keep manufacturer warranties valid on newer equipment, since almost all of them require documented maintenance.

Roughly at the point where one repair costs more than a third of a replacement and the machine has no obvious life left after it. On an air-cooled residential unit that tends to arrive somewhere past year fifteen, usually when a controller or an alternator fails, and the honest answer is that you are funding half a new install to keep an old one going. Liquid-cooled and diesel plant is the opposite case: those blocks are built to be rebuilt, and a set with a documented service history is worth putting money into well past twenty years. We price both paths and let you pick, and there is nothing wrong with a repair that buys you one more fire season while you plan properly.

Contracted maintenance customers come first, then everyone else in order of severity and location. During a normal week we are same-day across most of the Inland Empire. During a regional event, such as a wind-driven shutoff affecting Corona, Rancho Cucamonga and the Redlands foothills at once, everybody in the industry is stretched and priority is genuinely the only thing that moves you up the list. That is the argument for the annual visit in September rather than the emergency call in October.