Ault Hydronics
Mechanical contracting services
Custom design and retrofit for boilers, radiators, and hydronic loops — built to work with existing infrastructure, without spending more than the job needs.
From century homes to production floors, we design around real buildings — not one-size catalogs.
Radiators, cast-iron boilers, and the quiet work of keeping old houses warm without gutting what already works.
Process heat and comfort systems sized for production floors, taprooms, and the quirks of adaptive reuse.
Reliable hydronic heat for shops, greenhouses, and living spaces on organic and small-scale farms.
Ground-source systems designed around your property — new installs and thoughtful upgrades.
Most jobs start with something already in place — a boiler past its prime, radiators that still heat fine, piping that can stay. We map what is worth keeping, then design the upgrade around it.
That means custom layouts when the building asks for them, and straightforward retrofits when a careful swap is enough. The goal is a system that fits the structure and the budget — not a teardown for its own sake.
Based in Mt. Vernon and available across Iowa and the surrounding Upper Midwest. Tell us about the building, the heat source, and what is and is not working — we will take it from there.
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