Combination Boilers that provide both hot water for heating and hot tap water are advancing quickly. Flexible PEX tubing these cut out a ton of traditional cutting and brazing plumbing labor to install hot water loops. It's also a lot more efficient to move hot water to a heat exchanger of some form in each room than to push air through ductwork. Some of these rigs also can be easily combined with a solar thermal roof array, further cutting your gas or electric costs.
I'm pretty excited about the last option, since I have an older house with poor air return paths, which means my furnace is almost always ingesting chilly basement air rather than getting a nice recirculation of heating air that's already been heated. Not to mention radient heat exchangers are silent and allow easy individual room temperature control with the smarter thermostat systems.
If I turn the heat on in all the rooms, I can watch the electric meter spin.
Not this is a _reflective_ layer, not just insulation. The thermodynamics of radiant heat systems involve photon transmission, not just gas convection. If it was installed by a general contractor they may not have understood this distinction and the need for aluminum couplers and metalized reflective insulation.