I would not like mine under my windows.

IF you leave your drapes open, or have none at all, I suppose it will be fine.

They're there because that's where most of your heat loss and gain are.

They're there because that's where most of your heat loss and gain are.

Code for our new build required them within so many inches of each door and window.

We went to a lot of expense in the current build to put the ductwork in the ceiling both upstairs and in the basement. I didn't want ducts on the floor at all... dirt, furniture placement, dog hair were all good reasons for me to go with ceiling mount registers. But it cost us substantially more for ductwork, labor etc.

If the discharge vents are not below the windows, cold air drops from the window glass as warmer air from the ceiling replaces it. The cold air then moves across the floor creating a draft. This design will heat the room but it is considered inefficient and uncomfortable by HVAC designers.

The design of the window treatment should be able to accommodate an efficient heating system. If you find it a challenge, a window treatment designer might be able to help you.

Hi < my new house they placed the heating went next to the outside wall. But that wall doesn't have windows. Wil that help or do bad in long run. As I understood it will not help with condensation in the window

Our supply vents are beneath windows, with two levels of return vents on the opposite walls. The higher returns for cooling season draw the cool air up off the floor. The lower ones for heating season draw the heated air down towards the floor. If your HVAC system is balanced, you shouldn't have huge *gusts* of air coming out of the supply vents.

This thread is nine years old.

Hopefully they decided by now.

The question is as relavent today as is was 9 years, or 50 years ago. There are many people other than the original poster who want the answer, and if the answer changes with time they will want to know that too!