Why do valley homes install standby generators?
Winter outages are the main driver. When the power goes out in cold weather, furnaces and boilers stop because their controls and blowers need electricity. Heat tape shuts off. On a rural property, the well pump stops and the house loses water. In a second home with nobody inside, pipes can freeze before anyone notices the outage.
A standby generator is permanently installed outside the house and connected to your electrical system through a transfer switch. When utility power fails, it starts automatically and carries the circuits it is connected to until power returns.
How does an automatic transfer switch work?
The transfer switch is the part that makes a standby system automatic and safe. It monitors utility power. When power drops out, it signals the generator to start, then disconnects your home from the utility and connects it to the generator. When utility power returns and stays stable, it switches back and the generator shuts down after a cool-down period.
That separation from the utility is important. It keeps generator power from flowing back onto utility lines, which can injure line workers and damage equipment. The same principle applies to portable generators: they should only connect through a transfer switch or approved interlock, never by backfeeding an outlet.
How big a generator do you need?
Size depends on what you want to run during an outage. There are two common approaches. A whole-home system is sized to carry most or all of the house. An essential-circuit system is sized for a chosen set of loads, often through a separate subpanel, which allows a smaller generator.
Sizing starts with a list of what matters most to you, then accounts for how those loads behave. Motors such as well pumps, sump pumps and some heating equipment draw much more power for a moment when they start than when they run. A generator that is too small for those starting loads can struggle or shut down just when you need it.
- Heating system controls, blowers and circulation pumps
- Well pump and pressure system
- Heat tape and pipe freeze protection
- Refrigerator and freezer
- Some lighting and outlets
- Medical equipment, if anyone in the home relies on it
- Internet and security systems for remote monitoring
Where should the generator go in snow country?
Placement has code requirements, including clearances from windows, doors, vents and other openings, so exhaust stays out of the house. The manufacturer also sets clearances for service access and air flow.
In the valley, snow adds its own rules. Avoid placing the generator under roof edges where snow sheds, since a slide can bury or damage the unit. Keep it out of drift zones and away from where plowed snow gets piled. Air intake and exhaust need to stay clear, and the unit needs to be reachable for service in February, not just in July. A slightly longer wire or fuel run is often worth it to get the location right.
What fuel will it use?
Most home standby generators in the area run on propane or natural gas, depending on what is available at the property. Your propane supplier or gas utility handles the fuel line and, for propane, the tank size needed for the generator plus your other appliances. The electrician handles the electrical side and coordinates timing so everything is ready for startup. If you rely on propane, ask your supplier how tank size affects how long the generator can run during an extended outage.
What maintenance does a standby generator need?
Standby generators typically run a short self-test on a schedule to keep the engine ready. Beyond that, they need periodic maintenance according to the manufacturer, such as oil and filter changes and battery checks. Before winter, it is worth confirming the unit is clear of debris, the battery is healthy and the self-test is running. Many systems can send alerts, which is useful when you are away from the house.
Why plan before winter?
Installing a generator involves sizing, choosing equipment, a permit, the transfer switch, fuel coordination and an inspection. Equipment availability and scheduling can stretch that out. Planning in summer or early fall means the system is tested and ready before outages are likely, and the pad, wiring and fuel work happen before the ground freezes and snow complicates access.