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You should avoid using a pressure washer on any surface or item that could be damaged by the high-pressure spray, as some materials are too delicate to withstand the force.

Key items and surfaces to avoid include:

• Electrical Components: Never pressure wash electrical systems, as water can cause short-circuits and create a safety hazard. This includes utility meters, breaker boxes, electrical outlets, generators, and HVAC or air conditioner units.

• Delicate and Fragile Materials: Fragile items can crack, shatter, or be stripped by the pressure. Avoid pressure washing windows, glass, light fixtures, shingled roofs (especially asphalt), and stucco.

• Painted, Stained, or Sealed Surfaces: Unless your goal is to strip the finish, do not pressure wash painted surfaces, stained wood (like decks), or anything with a protective seal that could be stripped away. Be especially cautious with older surfaces that may contain lead paint.

• Soft Woods and Certain Decking: Delicate surfaces like softwood, composite decking, and antique or wooden patio furniture can be etched or damaged. If you must wash wood, use a lower-powered pressure washer with a wide-angle nozzle to prevent damage.

• Living Things: Never use a pressure washer on people, pets, or plants. The force can cause serious injury and will destroy landscaping.

Regular vacuuming, professional dry cleaning, and avoiding direct sunlight prolong the curtain lifespan.

The recommended frequency for professionally cleaning drapes varies. As a general guideline, aim for every four to five years. However, you should consider more frequent cleanings in specific circumstances. For homes with pets, heavy soiling, or residents with severe allergies, cleaning every two to three years—or even two to four times per year—is beneficial. Light-colored drapes may need cleaning every one to two years to maintain their appearance. Some also follow a biannual schedule, cleaning in the spring to remove winter dust and in the fall to remove summer pollen. In between professional services, lightly vacuum your drapes with a special attachment to remove surface debris, but avoid abrasive brushes on delicate fabrics like silk and linen.

Insulating windows without plastic is usually the better method. Outside of simply replacing your windows, you could buy cellular shades, which trap air between the window and the home, add a window film that blocks UV rays and traps heat, or cover your windows with a low-emissivity coating called “low-E.”