In our Wildcat we use a Life Zone (Wal-Mart) 4 Element Infrared Quartz Heater. 1,500 watts/5100 BTU's. Features are: 12 hour programmable timer, 3 heat settings, low, high & eco, large led display and remote control w/led indicator.
It glides on casters and says it will heat up to 1,000 sf room. 15"H x 11.4"W x 14.5"D. 13.8lbs.
Purchased this in late July for $84, just went back the other day to get another one for a room in our house and they were $59. Tried the larger 6 element heater, but both being 1,500 watts the 4 element one actually put out more heat.
Hope this helps in your search.
Bill, Maura & Rosie the rescued Boston Terrier
2016 Winnegbago Adventurer 38Q
2014 CR-V EX-L w/Nav & Blue Ox & Ready Brute Elite
NRA Endowment Life Member & FMCA #455593