How it works
A garden window is a small glazed box that projects out from the wall, usually over the kitchen sink, with glass on the face, on both angled sides and often across the top. A shelf sits at counter height inside it. Think of it as a bay window scaled down to a single opening.
Where it fits an Inland Empire home
It suits a kitchen that wants more light and a little more depth over the sink without opening up the whole room. You get somewhere to keep herbs alive and daylight arriving from three directions, and the work touches one opening rather than the elevation.
What to watch for
The thing that makes a garden window nice is also the thing to be careful about. Glass on three or four sides collects heat like a small greenhouse. On a west or south-facing kitchen wall in Riverside, that can make it the hottest spot in the house by mid-afternoon in July. If the wall takes afternoon sun, buy the lowest solar heat gain glass the unit offers and shade it from outside if there is any way to.
The Climate Zone 10 limits apply here as anywhere else, a U-factor at or below 0.30 and a solar heat gain coefficient at or below 0.23 on most jobs, but on this one window treat 0.23 as a ceiling rather than a target.
Like a bay, a garden window cantilevers off the wall, so it needs real support and correct flashing where it meets the house. Ventilation is usually one small vent in a side panel, and plants put moisture into the air, so expect some condensation at the glass edges on a cold morning.