Windows in San Jose are a summer heat problem with a valley address. Ranch sliders and wide glass under shallow eaves let the afternoon straight into rooms that the cooling then has to rescue. Atrium houses go further: whole walls of single-pane glass and sliding doors were the design, and they turn the interior into a bright oven. Older bungalows in shaded neighborhoods still draft in a winter rain, but the complaint that drives the call is usually heat, glare, and frames too hot to touch. Aluminum conducts that heat. Failed seals fog up and make a west room feel even more closed in.
Orientation is the whole diagnosis. A west wall of glass is not the same job as a north window under a street tree. Replacing every opening because one slider failed is how budgets and patience disappear. Tracks fill with grit. Latches stop lining up. Weep holes clog and a rare hard rain leaks onto the floor you thought was a roof problem. Stucco openings crack at the corners on the sunny side. In a glass atrium house, the window is the wall, so the work has to respect the post-and-beam look and the radiant floor at the threshold. A clumsy insert changes the way the house stands.
Say what you want fixed. Heat after lunch, a leak at the track, a door that will not lock, or a draft at a bungalow sash are different scales. Night air in the valley can cool the house if the openings still operate, and painted-shut or swollen units steal that option. Window coverings help, but they do not fix a failed seal or a frame pulling away from stucco. Security on a rear slider matters, and it still will not stop heat gain. Lead with the worst wall.
Call and name the walls that fail. Note aluminum, wood, or a newer frame, and whether the house is a glass atrium or a tract ranch. Mention how brutal the afternoon is in those rooms. The plan should cut the heat path San Jose actually has.
Call the number on this page.