Can i have an Instantaneous unit installed near windows? Comments Off on Can i have an Instantaneous unit installed near windows? 18 Jan 2016 Vote Up 0 Vote Down Answered Public Public Private Gas Water Heating Anonymous asked January 18, 2016 Hi, Can i have an Instantaneous unit installed near windows? 1 answer Vote Up 0 Vote Down Public ⋅ January 20, 2016 Yes, but there are exclusion zones that have to be taken into account. #1 Please login or Register to Submit Answer