SG Harold Plumbing Heating & AC
Stadler Underfloor Radiant Heat

Radiant heating systems involve supplying heat directly to the floor or to panels in the wall or ceiling of a house. The systems depend largely on radiant heat transfer: the delivery of heat directly from the hot surface to the people and objects in the room via the radiation of heat, which is also called infrared radiation. 
Radiant heating has a number of advantages: it is more efficient than baseboard heating and usually more efficient than forced-air heating because no energy is lost through ducts. The lack of moving air can also be advantageous to people with severe allergies. Hydronic (liquid-based) systems use little electricity, a benefit for homes off the power grid or in areas with high electricity prices. The hydronic systems can also be heated with a wide variety of energy sources, including standard gas- or oil-fired boilers, wood-fired boilers, solar water heaters, or some combination of these heat sources.
Hydronic Radiant Floors
Hydronic (liquid) systems are the most popular and cost-effective radiant heating systems for heating-dominated climates. Hydronic radiant floor systems pump heated water from a boiler through tubing laid in a pattern underneath the floor. In some systems, the temperature in each room is controlled by regulating the flow of hot water through each tubing loop. This is done by a system of zoning valves or pumps and thermostats.

Products and Specialties

Unico H/Efficient Central Air          Viega Radiant Heat Triangle Tube Boilers       AO Smith Hot Water                  Burnham Boilers                     Utica Boilers                     Goodman Condensers                  RUDD/RHEEM Hot Water      Bosch Hot Water           Buderus Boilers          Runtal Radiators          Kohler Fixtures 
Symmons Valves           Moen Faucets                     Fujitsu Mini Split AC   
American Standard                       European brands           Many More...
When looking at air conditioning there is nothing better than UNICO HIGH VELOCITY SYSTEMS, this is the most comfortable and beautiful system that can be installed. It's versatility allows these systems to be installed in new or old buildings. SG Harold has installed these systems in many new homes as well as very old buildings, brownstones,  including a restaurant, lawyers office, receptions halls and many more. 

Versatility... 
No matter when your home or building was built, or what its physical configuration, installing the Unico System is always a possibility—without compromising design or architectural integrity.

Quiet Performance... 
The air handler is designed to isolate noise and vibration. In addition, our uniquely designed supply tubes are lined with sound-dampening, spun-bond nylon, providing you with high performance—yet quiet comfort.

Minimal Remodeling... 
The modular air handlers and coils can be installed easily into attics, ceilings, crawlspaces and closets. The flexible mini-ducts can be routed through existing ceiling, floor and wall cavities, eliminating the need for unsightly and noisy metal ductwork.

Draft Free... 
The Unico System works on the principle of aspiration. Unlike conventional systems which often leave hot and cold spots as well as drafts throughout the home or building, Unico's streams of air enter a room and gently mix with the room's existing air currents. From floor to ceiling, air temperatures are even and drafts are eliminated.

Less Moisture... 
Air in the Unico System is passed directly over the evaporator coils at a colder temperature - 28° to 30°f colder for the Unico System compared to 15° to 17°f for conventional systems. With this unique difference, the Unico System removes 30% more moisture in the cooling mode than conventional systems. You'll enjoy fresh, pure air and feel more comfortable, even in areas of the country with high humidity.

Bosch creates countless installation possibilities without sacrificing power or efficiency. Imagine being able to use your shower, washing machine and dishwasher simultaneously – without running  out of hot water
All around the world, the Bosch name is renowned for an unsurpassed commitment to technology and environmentally sound principles in a broad range of sectors including automotive equipment, power tools, household appliances and others. Bosch is one of the world’s leading manufacturers of tankless gas water heaters, producing more than 1.5 million every year  Bosch tankless water heaters are the only tankless heaters specifically designed for the US Market.
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