We had some issues with our original unit that was purchased the end of July 2024. Constant ERR01 codes. Velit was very responsive to our plight, as the nights were down to upper 30's. After speaking with their engineer, we determined a new unit was needed. Received the new unit within a couple of weeks, got it switched out and BOOM, fabulous heat and bluetooth capabilities!! Unit is very quiet and starts every time, the first time. Been using it for 3 weeks in 5-35 degree nights and it's keeping the van at 62 (where we have it set). Couldn't be happier and so impressed with Velit's customer service!! Thanks, Velit!

Very hot, it keeps my 11 windows pasanger van very warm. It got down to 28 degrees once and I felt very comfortable. It's not a small job if you need to drop your gas tank, witch is the hardest part of the setup.

We replaced a WebastoAT2000 with the VeLit heater. Because of the heat at lower elevations, the initial run was at 9,000 feet. In short, the VeLit works better—and quieter—at 9,000 feet than the Webasto did at sea level. We look forward to warmth at even higher altitudes. This heater is a game-changer.

When it's working it's great however I've needed to update the firmware several times to get it unstuck from starting up. This seems to happen if the unit loses power. It will just refuse to start.

I’ve had problems with my heater, but discovered it was related to connectors on my fuel tank and not the heater itself. Once I figured the issue out and made a modification to the fuel system, my heater is working properly. Velit customer support has been amazing through this process including sending me a second heater, which I used to troubleshoot the fuel system issue. They never left me hanging and always responded. This review would be an easy 5 if not for the fuel system issue. To date I have tested the heater on three occasions post fuel connector bypass and it ran steadily producing good for an hour each test. Soon, I hope to use it in my boat in a real world situation.