No, a standby generator should not be installed right next to a window. There is a required minimum distance from windows, doors, and other openings, generally at least 5 feet, and the reason is safety. A generator’s engine produces exhaust that contains carbon monoxide, and that exhaust must be kept away from any opening where it could enter your home. Understanding this rule helps you plan a safe generator location.

Here is what to know about installing a generator near windows.

The minimum distance from windows

Generators are generally required to be at least 5 feet from doors, windows, and other openings. This distance applies to any opening into the home, including operable windows, doors, and vents. So while a generator can be placed along the side of a house, it needs to be positioned so it maintains that clearance from any window.

The exact figure comes from your generator’s installation manual and local code, but the 5-foot guideline is common for home standby units.

Why the distance exists: carbon monoxide

The core reason is carbon monoxide. When a generator runs, its engine exhaust contains carbon monoxide, an odorless, colorless gas that is dangerous to breathe. If the exhaust is too close to a window, door, or vent, those fumes can be drawn into the home, especially when a window is open. Keeping the generator the required distance from openings ensures the exhaust disperses safely outdoors rather than entering living spaces.

This is not a minor technicality. Carbon monoxide from generators placed too close to openings is a well-known hazard, which is why the clearance rule is taken seriously.

Openings that count

When planning placement, remember that the distance rule applies to more than just windows. Keep the generator clear of:

• Operable windows
• Doors
• Fresh-air intakes and vents
• Dryer vents and similar openings

The goal is to keep exhaust away from anything that leads into the home.

What if you do not have enough space?

Homes with limited yard space or windows on multiple sides can make placement tricky. If a straightforward location is not available, an installer will find a compliant spot that maintains the required clearances, which may involve positioning the unit along a different wall or section of the property. The clearances are not negotiable for safety, so the solution is finding the right location, not reducing the distance. A professional installer works this out as part of the job.

Carbon monoxide detectors still matter

Even with correct generator placement, working carbon monoxide detectors in your home are an important layer of protection. They provide a warning in the unlikely event that any exhaust reaches the home, and they are valuable regardless of your generator. Proper placement plus CO detectors together keep your household safe.

A generator cannot be installed right next to a window. It must maintain a minimum distance from windows, doors, and openings, generally at least 5 feet, because engine exhaust contains carbon monoxide that must be kept out of the home. If space is tight, an installer finds a compliant location rather than reducing the clearance. Correct placement, combined with working carbon monoxide detectors, keeps your home safe.

Stella Electric installs standby generators with safe, code-compliant placement for homeowners across the Baltimore area and throughout Maryland, with flat-rate pricing and no overtime charges. We will find the right location that keeps exhaust clear of your windows and doors. Financing is available on qualifying projects .