Unless you're moving to Venus, there is absolutely no issue with storing your machines in a garage. Temperatures would have to exceed several hundred degrees (more that 300+) to do any damage. Even running computers will tolerate temps in excess of 150. Problems begin to arise as you approach 200 degrees. I ran data centers for the worlds largest computer chip company for years. No harm will come to your machines. Just bring them inside for several hours before plugging them in and using them.

Call a good sewing machine repair or sales person and ask them for their opinion.

My machines are the most important part of my sewing area and their location takes precedence over everything else. Even if I have to move them around a time or two, or four. :o

When we moved across 4 states to the West Coast, my machine traveled with us in the car. I kept it in my sewing room until we were packed, loaded and ready to leave. It's like my child - never out of site.

I'm sure you have heard the old saying "It's not the heat; it's the humidity.". Humidity will wreak havoc on your electronics.

I thank you again for all your advice. I decided I could not replace them so talked to my daughter and they are now inside her house til the move is over. I had the actual boxes that they came in, so that is what I put them back in. It is one more worry off my mind, whew. With a move coming up (only 55 miles) ... I have a lot of worries.

Thank you allllllllll!