Don't use NuCold, RV Fridge House, RV Icebox ammonia cooling units
from:
RV fridge repair company sued for cheating customers in 40 states - RV Travel (https://rvtravel.com/rv-fridge-repair-company-sued-for-cheating-customers-in-40-states/)
"NuCold, at 220 Sardis Road in Morrilton, sold, remanufactured and repaired ammonia cooling units for refrigerators in recreational vehicles. Customers were required to pay in advance before any work was done or any unit was shipped. The units cost between $400 and $1,000. The company has also been known as RV Fridge House and RV Icebox.
The aggrieved customers in the lawsuit, who were from 40 states and Canada, either didn't get the equipment they paid for or were sold defective products with warranties that NuCold refused to honor, the lawsuit states."