HUGO-X1R 350W Pure Sine Wave Battery Backup for Tankless Water Heaters, Room Heaters, Direct Vents, Furnaces, Combi-Boilers, and Gas Appliances; Compatible with Rinnai, Navien, Rheem, Noritz and more

Really like this battery backup Easy to install as continuous running. Did need to call a plumber to install the flow sensor. Paid an additional $120, but worth it. I was not comfortable cutting PEX tubing. Overall very satisfied with purchase. Hope it never gets activated, but if power goes out, I will be with hot water.

Outstanding quality!

Bought this as a way to have hot water during power outages with my tankless water heater. Testing shows this works as advertised. The only reason for the 4 stars was that the holes for the mounting brackets were not tapped correctly. I had to re-tap the holes for the provided screws to work. Sripped to screw heads till I decided they were not correct. The construction is very quality otherwise. Real commercial quality.

Live in the mountains at 8200 feet above sea level. Have experienced -20°F to -40°F in past winters. Currently rely on a Rinnai Direct Vent Furnace for heat. No woodstove. If power goes out I’m counting on Hugo to keep me alive. Local power transmission went out six-seven times one evening about two weeks ago. Refrigerator, stove, Internet ... all doing the power surge shuffle. Direct vent furnace via Hugo didn’t skip a beat and kept me toasty. Every aspect of the purchase – especially SPS Power Solutions customer service was excellent! At best Hugo may be a lifesaver. At the least, I think of Hugo as a $500 potential life insurance policy which may possibly give me peace of mind for the next 15–20 winters.

Only issue I had (and still do) is in-line fittings that work on the flow valve to 3/4" rigid copper. I tried female swivel hose fitting but cannot get that to seal as it would require tightening so much it will strip the plastic threads. I looked at Home Depot, Lowes and on line and still have not found any fitting to work with 3/4" hard copper supply. I have it simply plugged in now and that was no problem. Next step is to consult customer service for a link to what may work I MUST say this unit is robust by comparison to the "pure sine wave" computer UPS backups also recommended by customer service. cost difference is only maybe $30-50. In my opinion Its the only consideration for demand hot water heaters. EVERYONE should have this installed (or install themselves as it plug n play) if for no other reason to surge protect a sizable investment and at the same time avoid down time on hot water supply - even if only to finish a shower your in the middle of! Having an option for hot water for 2-7 days in a power outage (depending if you install flow valve to preserve battery) is simply a no-brainer.

Well made. I haven’t had a blackout yet to see it’s performance. Fed x ground shipping took 10 days to receive, very poor. This unit was very easy to set up.

documentation doesn't mention to disconnect a connector if no flow sensor is used.

Like the peace of mind this unit will provide for me as I don't have a whole house generator. Not sure if the chirping audio alert sound that is mentioned in the FAQ will be an annoyance or issue since it mentions it silences after 5 minutes. To me it should have been designed to only come on if the battery is getting too low to operate. Will see once I experience a loss of power & need hot water.