I went ahead and bought it. Called my local service center and ery interesting conversation with him. He will come to my farm and pick up my NiSun UTV (in my case an Axis 700) and carry it back to his service center for warranty items, non-wear and tear consumables work. He’ll get reimbursed through NiSun. He took the time to really talk to me and mentioned some common easy to avoid problems. Super helpful.
I bought my 500 from Lowes. Just couldn't justify the price of others for the little use I got it for. It was only $7999 this time last year but have gone up $1000 since then. Had too adjust the shift linkage and tighten exhaust manifold but other than that no problems. Have a service dealer 30 miles away and will have the valves adjusted there. Easier to shift after the first oil change. Seems like break in oil was much thicker. Maybe just my imagination. I keep it on a trickle charger all the time and it starts and runs great. Good luck if you decide to buy. 700 wasn't available at my Lowes or I would have got that. I also bought a plow for it and it performs great.
Yes it is a lot of heat so it should warm up quickly. The battery draw is quite high at start up at 10 amps to power the glow plug for 1-3 minutes until combustion is established with only the diesel fuel so I want to have a separate battery just for that.
This has to be by far the lowest cost and most effective way to heat a UTV. Especially one that is used for short trips. Using the remote control I will fire up the heater 15 minutes before getting in my Mule so it will be all warmed up before I get in it while the engine is still ice cold and will keep the Mule toasty with the engine off say whill gutting a deer or loading up fire wood.
Looks like I will need to fabricate bracketry for the heater's battery. No big deal but if somebody had already done it that would probably save me some time. That's why I asked if anybody had already done it.
Thanks for all the input!