An energy‑free unit does not generate heat. It conserves the heat that is already there, and it limits every path by which that heat escapes.
The riser tube below frost line brings up soil heat and the thermal mass of the supply water the largest single input in deep winter.
A 15–100 gallon insulated body of water carries an enormous amount of stored energy relative to its exposed surface.
Every drink pushes the ball down, exchanges water and adds body heat. Correct stocking density is part of the design.
Double‑wall shell, foam‑in‑place insulation, insulated lid and ball‑closed openings cut conduction, convection and radiation losses.
Every alternative material fails in a way that is expensive and predictable. Galvanised steel corrodes from the waterline out. Concrete cracks when water freezes in the pore structure. Painted steel needs repainting nobody does.
A rotationally moulded polyethylene shell has no seams, no weld lines, no coating, and nothing for water chemistry to attack. UV stabilisers hold colour and impact strength through years of direct sun, and the material stays tough rather than brittle at low temperature.
All of it under one roof in Grinnell, Iowa which is why an engineering change reaches the line in days, not quarters.
Moulds are designed and maintained in‑house so wall thickness, draft and drain slope stay exactly where the drawing puts them.
Powder is charged, heated and biaxially rotated until it fuses into a single seamless shell with even wall distribution.
Insulation is injected between inner and outer walls and cures bonded to both, forming a structural sandwich.
Valves, floats, balls, heaters, drains and hardware are fitted by trained assemblers working to a documented build sheet.
Units are filled and run. Valve shut‑off, float travel, seal integrity and drain function are checked before crating.
Packed for freight to dealers and distributors across the US, Canada and export markets, with parts orders picked the same day.
Cold‑weather performance is easy to assert and hard to prove. New platforms are run through controlled cold cycling and then placed in working herds through a full Iowa winter before they enter the catalogue.
Standard coverage on the moulded shell, backed by a stocked parts programme that extends far beyond the warranty term.
Every energy‑free unit installed removes a heated tank’s winter load from the grid entirely year after year, with no action required.
Common wear parts stay available for legacy models. A twenty‑year‑old MiraFount should be repairable, and usually is.
Sealed, covered designs cut evaporation losses that open tanks give up to sun and wind through the whole grazing season.
Build sheets, parts diagrams and installation instructions are controlled documents, revised with the product.
Domestic manufacturing keeps lead times short, quality accountable and the people who build the product close to the people who use it.
Our rotational moulding, foaming and assembly capacity is not reserved exclusively for our own catalogue. We work with equipment manufacturers, co‑operatives and distributors on private‑label programmes and purpose‑built poly components.
Installation sheets, exploded parts diagrams and specification drawings are available for current and legacy models through our support centre.