Installazione condizionatore a finestra

One of the simplest home improvement tasks. Under 30 minutes with basic tools.

What You Need

  • Window AC unit
  • Screwdriver
  • Level
  • Measuring tape
  • Foam insulation strips

Step 1: Measure Your Window

Most window ACs fit 23-36 inch wide windows.

Step 2: Install the Bracket

L-bracket on sill, tilt slightly backward for drainage.

Step 3: Place the Unit

Lift and center in the window opening.

Step 4: Extend Side Panels

Fill gaps with accordion panels, lower upper sash.

Step 5: Seal and Insulate

Apply foam strips. Improves efficiency by 10%.

Step 6: Plug In and Test

Grounded outlet only. Never use extension cord.

Common Mistakes

  • Tilting forward (water drips inside)
  • Extension cord (fire hazard)
  • Unsealed gaps (15-20% waste)
  • Direct afternoon sun placement
  • Leaving installed in winter