Here are the benefits and drawbacks of radiant heating systems:
Advantages – Although not seen very often in a home in New Hampshire, a radiant heating design is an exceptional and unique way to heat a house. A radiant heating system works similar to forced hot water, except the heating elements are installed into the floors of the home. It is commonly referred to as "Radiant" because it works by heating the objects in the home, which in turn warms the air. Radiant heat provides a constant warmth throughout the house, especially on the floor where cold air normally settles.
Thermostats in a home with Radiant heat can be kept at a lower temperature. Once a room has reached its temperature, it does not call for heat as often. Also, the heating elements are not visible, thus giving a homeowner more design options for the room.
Disadvantages – As with a forced hot water system, radiant heating systems share similar disadvantages, plus a few more. VRV systems are the most costly to install. Careful consideration must be taken in the design and installation of a VRV system because they are installed into the structure of the home, and very difficult to repair if there is a problem. While the option exists for running coolant through the pipes as well as heat, this is very expensive and requires additional external equipment to maintain.
You don't often see the cooling option in residential construction. So, a stand-alone central air conditioning unit would be needed if that option was desired by a homeowner. This does however add a great value for resale to your home.