How can you determine if windows are Low E
I have some picture window panes I want to replace.
One possibility is to just re frame what I have. They are 4' x 4'5" glass, 6 of them. They are double pane looks like about 3/4" between panes and look slightly tinted. At night the house lights reflect back off them even white walls hurting my view of the distant city lights. I assume they are between 10 and 20 years old but are not leaking.
They are under a porch roof so no direct sunlight will enter except for very late evening. Mainly I want to keep the heat in, in the winter and heat out in the summer.
Is there any way to determine if they are low E? If not I will replace them. They are in a metal frame which I would replace.
Would a IR bulb do the job? I could compare them with my newly installed Low E double hungs.