You are in luck! There are a plethora of things you can try in order to make yourself more comfortable. Please feel free to try any or all of the following:
1. Adjust the thermostat. Set it at a normal temperature, and move it down incrementally until you find a temp that's comfortable for you while still maintaining a temp that's not going to kill your houseplants. Please be advised that your family (whoever is in your house at the moment) might not like the fact that you've adjusted the thermostat to meet your needs, but who cares? The hand that washes the dishes/vacuums/does laundry rules the thermostat.
2. If adjusting the thermostat makes the home's other inhabitants drag out the pitchforks and torches, try carrying a fan around with you like some folks do at church. It can perform triple-duty--you can use it to keep yourself cool when you feel a flash coming on...by switching arms, you can give yourself a good upper-arm workout (and help tone those batwings)...or use them to impart a dramatic flourish when you want to make a point. (Or pretend you're Viola Davis in The Help!) You get extra credit if the fan features an advertisement for a funeral home.
3. Stay plenty hydrated. Carry a cold drink around with you and take a swig at the outset of a flash. If it's cold enough, it could counteract the oncoming heat. (PS--this is in no way scientific, but it does give you an excuse to carry around a margarita.)
4. At night, the 'one leg out' position seems to work well. Until your leg gets cold. Then you have to put your leg back under the covers until the sweat starts again, and then it's leg-back-out-time. This ritual is annoying to whomever shares the bed with you, and he/she might have to sleep elsewhere, which is actually what you want. Because an empty bed is a cooler bed!
I hope these suggestions will help in some way. If not, use your hot flashes as an excuse. Don't want to sit in that boring meeting? At an appropriate time, get up, start pulling on your shirt as if you're trying to cool off, and walk out. If the other folks in the meeting look at you funny, mouth the words "hot flash" and leave. Two things about hot flashes that you should always keep in mind: women of a certain age understand them, and men are afraid of them. The only people who are nonplussed are the "cool little misses," and WE DON'T CARE WHAT THEY THINK! Someday it will be their turns, and we will laugh and laugh!
Hot flashes? If you can't lose 'em, use 'em!