Keep in mind some systems work better when combined with heat storing ballast and/or over finished space.

Is it electric or do you have a boiler? Is your kitchen on a thin layer of cement? Just wondering how that is on your joints.

Radiant hydronic heat is very common for installation in a slab-on-grade floor, but a good HVAC contractor knows exactly how to insulate underneath it so that the heat goes up into the slab and room, not down into the ground. I assume you would need very similar insulation under the floor if you have a garage space under the heated floor.

Bruce

We would be using Warm Board or Uponor Quick Track, both of which work with our current heating system. The ceiling of the garage is insulated (not sure how well) and has drywall on it.

Radiant heat is a great solution for new home additions, so that the new area can be heated without having to hook it up to the initial duct work system (or other heating systems). It's also energy-efficient, as no heat is lost through the ductwork in the process. Depending on the climate you live in, the flooring over a garage can be exceptionally cold. Radiant heat in the flooring can be a great solution for you– I would recommend contacting a local heating and cooling company and see about which options will suit you best.

Hi Maria. If your kitchen is over an enclosed space (garage), more than likely the radiant heat in the garage would not adequately heat the kitchen. Generally radiant heat from a lower floor can only heat an upper area say if it's a loft or an open area. We'd be happy to talk to you about your project as well. If you'd like to learn more about how those 2 products compare, this may help as well.

We have radiant heat in a bathroom over an unheated garage. The bathroom is a heated space, so we don't depend on the floor to heat the room, and I doubt it would, but the heated floor is really nice.

Heated floors and ceilings are terrific! There are numerous options. Check out Calorique a company in Wareham Ma(that will travel to look at your project). Perfectly Warm and Perfectly Clear are two of their products. My home has several of their products which are easy to install and best of all work!