Dr.Death
could be just household like the room is powered by one wire from the fuse box ?   I ran a independent  wire for the fuse box to this room dedicated to just my computer stuff  and bumped up the gauge of wire   to thicker  from what was used when the house was built  they did about as cheap a job as they could  to cut costs I guess ..
 
then I gues you buy a 7 warrantee year PSU and expect to go at least 10+ on it
 
if you do decide to do a UPS  just do your homework on them    be sure you get what you think you paid for   .   I ended up just saying screw it . 
 
this looks to do the job  and good hold up power  to get out of a mess  .   just don't know about cyberpower  branded stuff  . its not like I would pick there computers  ,but ??
 
https://www.amazon.com/CyberPower-CP1500PFCLCD-Sinewave-Outlets-Mini-Tower/dp/B00429N19W

I had a dedicated line run to my office outlet-just for my PC. I ran into too many problems otherwise. Thankfully, our electrical panel had free slots to add on for something like that. 
 
 
 

Dr.Death
could be just household like the room is powered by one wire from the fuse box ?   I ran a independent  wire for the fuse box to this room dedicated to just my computer stuff  and bumped up the gauge of wire   to thicker  from what was used when the house was built  they did about as cheap a job as they could  to cut costs I guess ..
then I gues you buy a 7 warrantee year PSU and expect to go at least 10+ on it
if you do decide to do a UPS  just do your homework on them    be sure you get what you think you paid for   .   I ended up just saying screw it . 
this looks to do the job  and good hold up power  to get out of a mess  .   just don't know about cyberpower  branded stuff  . its not like I would pick there computers  ,but ??
https://www.amazon.com/CyberPower-CP1500PFCLCD-Sinewave-Outlets-Mini-Tower/dp/B00429N19W

I have and have had the following Cyberpower units:
650
900
1300
1500
2200 x2
 
ALL of them are still in use today, except that 1 2200 that went out after 9 years of use.
All of them are at least 4 years old now
None of them fail in any way (I do NOT use the software they provide though, had some crashes back on xp because of them, so I dont use em anymore. And, I dont leave the computer on when I am not using it either, I shut the computer off), ie, I dont get anything shutting off, or the ups shuts off, or anything. All fine except that 1 2200 unit that the batteries lasted 3 years boyond what they were supposed to and went out after 8 years (5 year warranty on the batteries, and they lasted 8 years), but when I put in other batteries from the local shop here (I think they were super super cheap batteries, may have even been refurbed from the store), the motherboard/pcb on the unit went out a year later. But, having that last 9 years, when the warranty was only 5 years, was exceptional in my book.
And, since all the others have worked just as well, and way beyond their warranty, I can suggest you get one.
But, remember, PURE SINE only.
AND, no green, switching, power saving, phasing, double stage, whatever they want to call it. Get the one that is a regular, runs all the time, pure sine wave, unit. Dont cheap out on this, or you will have lots of issues.
Also, dont 'clean' your internet cable (dont use it through the ups), or phone line, or any dumb stuff like that. It just makes it bad having 1 more cross in the line, and is not needed anyway.
 

LOL
Wow, that is horrible.
I would put the unit in just to make sure it works.
If you do kill the unit currently in your machine, and go to use the now backup one you just got back, say in a year or 2, and it goes up in smoke, you are out that psu and whatever it takes, if its out of warranty.
You dont even have to take the other one out of the case, just run it alongside (or better, on top or bottom of the case, so everything grounds).
Putting it in now will let you know if its at least good for a gaming session or 2. Or that it too needs to go back for yet another psu rma.
If it were me, I would not take any chances.