Can Radiant Floor Heating Be Retrofit into Existing Homes?

Assessing Suitability and Planning

Before retrofitting radiant floor heating into an existing home, assess the suitability of the space and plan accordingly. Consider factors like insulation levels, window orientation, and the home’s age and construction type. In general, homes built before the 1970s are more suitable for radiant floor heating due to their often thicker walls and more efficient insulation. If the existing home has a crawl space or a concrete slab, you can integrate a hydronic radiant floor heating system.

Installing a Hydronic System

To retrofit a hydronic radiant floor heating system, you’ll need to install a boiler, pumps, and tubing. This can be a DIY project if you’re comfortable with plumbing and electrical work, but it’s recommended to hire a professional for a more complex installation. Typically, a hydronic system consists of a 30-50 gallon boiler, a circulation pump, and 1/2-inch to 1-inch PEX tubing. The tubing is usually installed in a grid pattern, with 6-12 inches of spacing between the tubes, and secured to the floor with staples or adhesive.

Choosing Between Electric and Hydronic Systems

When retrofitting radiant floor heating, you have two main options: electric or hydronic systems. Electric systems are simpler and more cost-effective to install, but they can be more expensive to operate. Hydronic systems, on the other hand, are more complex and require a boiler, but they’re often more efficient and cost-effective in the long run. Consider factors like your energy budget, the home’s insulation levels, and local climate when deciding between an electric or hydronic system.