Compare the differences between double hung vs single hung windows. Choosing a double hung or single hung window will come down to 4 important factors. Often times people focus solely on the energy efficiency of a window, but that should not be the only consideration. When purchasing windows, you want to ensure the windows you’re getting will meet your requirements.
1. Operating Sashes
Double hung windows have two sashes that move up and down. Only the bottom sash is operational in a single hung window. Double hung windows make cleaning the top sash easier. Harvey double hung windows have sashes that both tilt in for easy cleaning inside and out; and for easy sash replacement if something smashes through the glass.
Single hung windows tend to cost less than double hung windows because the top sash is non-operational. Installation is often cheaper for a single hung window; there are fewer moving parts, whereas a double hung requires more work to ensure airtightness. Sometimes builders choose a single hung window to cut down on the cost of their project. If you hire a window installer, be sure to ask which type of window you are buying.
3. Ventilation Control
This makes sense right? Single hung windows offer less ventilation than double hung windows. Single hung windows provide ventilation control only by the amount you open or close the bottom sash. Double hung windows allow you to lower the top sash in the summer to let hot air escape, providing more ventilation and versatility.
4. Energy Efficiency
When closed improperly, the top sash of a double hung window will lead to a loss of heating or cooling and higher energy bills. The top sash of a single hung window is fixed. Eliminating the chance of the top sash sliding down when unlocked or closed improperly.
However, assuming proper care is taken to close a window, most of the energy efficiency is gained with the glass package, not the operability. Check out Harvey’s ENERGY STAR rated glass package options.