What does a standby generator do?
It powers your house automatically during an outage. It sits outside on a pad, runs on natural gas or propane, and starts through an automatic transfer switch within seconds of the power going out.
How much does a standby generator cost?
HomeGuide lists about $6,000 to $11,000 installed for a standard whole-house unit and about $9,500 to $24,000 for larger units or long runs. Fixr's national range is $10,000 to $20,000. A site visit gives the real price.
What size generator do I need?
It depends on what you want to run. A load calculation based on your appliances, well or sump pump and central air sets the size. Fuel matters too, since output is usually lower on natural gas than on propane.
Can I use propane if I have no gas line?
Yes. Propane is the usual fuel where there is no gas main. The tank is sized for how long you want to run between refills, and the hookup is done by a licensed professional.
How loud is a standby generator?
It makes noise similar to a central air unit or louder, depending on the model and load. Placement, local noise rules and the timing of the weekly self-test are worth discussing with the installer.
Where can the generator go?
It has to meet the manufacturer's clearances from windows, doors and vents plus any town setback rules. The installer measures these on the site visit.
Do I need a transfer switch?
Yes. Every standby generator connects through a transfer switch, which makes the system automatic and prevents dangerous backfeeding onto utility lines.
Can I run a portable generator in my garage?
No, never. Carbon monoxide from a generator can kill quickly, even with the garage door open. Run portable generators outside, far from windows, doors and vents.
Is it legal to plug a generator into a wall outlet?
No. Backfeeding through an outlet is dangerous and illegal. It can electrocute utility workers and damage your home. Use a transfer switch or interlock installed by a licensed electrician.
How often does a generator need service?
Most home units need service at least once a year. HomeGuide lists typical yearly maintenance at about $200 to $650.
Will I need a panel upgrade?
Sometimes. Older, full or 100-amp panels may need an upgrade, especially for a whole-home system or when an EV charger is added at the same time.
What happens after I submit a request?
We pass your request to a local generator installer, who contacts you, visits if it makes sense and gives you a written quote. There is no cost and no obligation.