Not sure why you got downvoted, I've seen crappy electricity in my own home office after I got a UPS for my computer system. It would have its fans kick in regularly to modulate the voltage that came in at a crazy high ~255v (Australia).
I got the APC
Line-R 1200VA Line Conditioner With AVR installed in front of the UPS and couldn't be happier now - it steps down the voltage and gives the UPS peace of mind.
Try the APC, not the most expensive thing but it's worked well for me.
Installing a UPS behind the conditioner sounds like a good idea. I have been meaning to get one of those... Thanks for the rec on the APC, I bookmarked it for comparison later. What UPS are you using?
The voltage in that part of the house appears to be better, but the circuit is easily tripped when running toaster + micro or similar, so having these UPSes has taken a lot of frustration away.
Actually just checked my invoice and I got them both in 2012, which is a little while ago now, and they're still good with their original batteries.
I got the APC Line-R 1200VA Line Conditioner With AVR installed in front of the UPS and couldn't be happier now - it steps down the voltage and gives the UPS peace of mind.
Try the APC, not the most expensive thing but it's worked well for me.