Around 30% of heat comes in through your windows. Your south and west-facing windows receive the most heat throughout the day, so make sure they remain closed while the sun is out.  You can determine which windows are facing south and west with a compass or by using GPS software like Google Maps. The temperature is usually the hottest around noon to 3 p.m. The temperature usually drops after the sun goes down. If you’ve built up heat in your room during the day, opening the windows after the sun sets will allow cool air to flow into your room. Opening the windows allows cold air to escape and hot air to enter your room. If you’re using air conditioning, your windows and curtains should be shut at all times during the day to prevent the sun from heating up the room. Low-E window film and insulated curtains are specially made to keep heat out of your room. To apply low-E film, peel the sticky sheet from its plastic backing and stick it onto the inside surface of your window. Insulated curtains are installed like regular curtains but are made of special materials that keep heat out of the room. You can purchase low-E film and insulated curtains online or in the windows department of most hardware stores. Leafy trees, reeds, and sunflowers can block out the sun during the hot weather. Plant the trees or plants on the outside of the house and position them so that the leaves block out the sun. This is usually most applicable to rooms on the first floor of a house.

How would you rephrase that briefly using Indonesian?
Tutup jendela dan gorden saat matahari bersinar terik. Buka jendela setelah matahari terbenam jika Anda tidak memiliki pendingin ruangan. Tutup jendela saat pendingin ruangan dinyalakan. Pasang lapisan film dengan emisivitas rendah atau tirai insulasi pada jendela. Tanamlah pohon atau tanaman di depan jendela yang menghadap ke selatan atau barat.