11/10/2025
Project complete! This past summer, I looked into how much it would cost to get our old boiler fully repaired and in operable condition. We limped it through last winter, but the repairs it would have taken to get it up and running just weren't worth it for such an old unit. It would cost almost as much as a new boiler. So we opted to install a new boiler. On the way home from the dealer, I had time to think. I don't usually have the time to just ponder, but a 2 hour drive by myself allowed my brain plenty of time to start churning out ideas. And so, the plan to build a stock tank heater was hatched. Our new boiler only had a single input and output, unlike our old boiler, which had two. So I engineered a design that would split both the return and supply lines into two. One would go to our house as it always had, and a second would be connected to a new insulated pipeline out to the new fence. We rented a mini excavator and trenched in a water line from our house to the boiler for a hydrant, and continued the water line alongside the new insulated pipe out to the fence line where a second hydrant was installed. We then buried an old, leaky stock tank, and cut a hole in it to make way for the insulated pipe. The original plan was to nest a second non-leaking Rubbermaid 100 gallon tank into the buried one. However, both our Rubbermaid tanks had irreparable leaks, and Rubbermaid has since changed the design on *only* their 100 gallon tanks, so the new design would not nest into our old tank. Fortunately, the 50 gallon tank is still the old design AND nests into the 100 gallon tank decently well. So rather than buying two new tanks (💲💲💲), just to cut a hole in one, we opted for the smaller one. We knew we'd have to refill it often, but it was better than cutting a hole in a perfectly good $100+ tank for a project I wasn't quite convinced would actually work out. I bought a heat exchanger off Amazon, along with a couple of temperature sensors, and I now have a heated stock tank! So far, it's been working perfectly, with the water temp holding around 50 degrees. The boiler efficiency was also unaffected! I couldn't be happier with how it turned out, and I know I'll be doing this down the road with a 150 or 200 gallon stock tank setup.