The provia storms are very good. Price is fine, maybe a hair high if it does not include wrapping, but its a great price if it does. I agree overall with the advice provided so far on replacements vs storms, it really depends on the individual circumstances. It can be hard to justify spending that much without getting he other added benefits of replacements ( ease of cleaning, lower maintenance , potentially enhanced property value, better energy efficiency, etc), however if your existing windows can be reconditioned to the point of operating smoothly and looking good, adding the storm to that can definitely get you pretty close in those areas but with cost savings and maintaining the original integrity of the home. As wow alluded to, you could certainly take those dollars that you save and put them to air sealing , insulation , etc in other areas of he home and increase your energy savings exponentially.

Mary, Are you referring to window restoration or just sealing up some existing windows? The two are going to be very different type professionals. If it it just sealing up some exterior trim on windows, a decent painter can do that. If its window restoration, that is a different ball of wax. Window restoration is a very niché marketplace. The best thing to do is start with a Google area search near your home and especially in those areas that are more heavily concentrated in older homes. Next would be to ask around any of the historic districts that are in your area and see who they might have a list for. Hope this helps.

IGUs (Insulated glass units) are replaced as a unit and can't be field repaired on one side. Can the window sash be easily removed from the window? If so take it to a glass shop and get an estimate on the repair. If the frame comes off easily then one can take just the IGU to a shop and have it replaced, then reinstall in the frame. I can see three options: 1) have the tree guy coordinate the reapir with your tenant, 2) Call a local glass company, have them go to the property amd do the repair and deduct it from the tree guy's invoice. 3) Ask your tenant to handle the repair and compensate him/her accordingly. You don't say the size of the window and you're picture doesn't hint at the level of effort to remove and replace the IGU on this particular window, so it's difficult to guestimate the level of effort to fix it.

+1. If they are in decent shape otherwise and you plan to move soon, replacing only the glass in those affected units is probably your best bet.