For every 3 degrees that you can lower the water temperature in your heating system, that system becomes 1% more efficient. This might not seem like much until you look at the average running temperatures of different systems. Baseboard heaters typically run at 180°F while radiant heat runs at 120°F. That is a difference of 60°, or a 20% reduction in your heating costs. Radiant heat will typically be between 15 and 33% more efficient than other heating methods.
Radiant heat supplies and other heating supplies can be found at www.supplyhouse.com