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Energy Efficiency


Fuel conservation and energy efficiency is essential with today’s high energy costs. Integrated Solar Heating is becoming one of the most efficient sources of heating.  With the addition of a Hydronic solar heating system integrated into the space heating system, Legrand Construction’s homes provide the comfort of Infloor heating and drastically reduced energy bills.  Hydronic heating uses water to move heat.  Instead of heating air which results in loss of heat/cooling, water is circulated through tubings in the floor or convectors in the walls which heat or cool the surfaces directly.  Therefore, Infloor heating is more efficient because it eliminates duct losses as ducts can leak heated air into unheated spaces which raises heating costs.

Each Hydronic solar system is custom designed by one of the foremost solar heating engineers in the country, utilizing advanced Tekmar controls, a high efficiency on demand boiler and high efficiency Hydronic solar panels.  Tekmar controls are superior to other systems because their intelligent design eliminates temperature swings by adjusting the heating/cooling system according to inside and outside temperatures. 

Energy Efficiency. Active Solar Heating System

                                                   Active Solar System in Durango


Energy Efficiency

The above schematic shows the integration of solar collectors into a boiler heated Hydronic system. Heated water from the solar collectors is maintained in an insulated storage tank of 500 gal to 1500 gal size depending on how large a system is desired. This is approximately 500k to 1.5M BTUs of energy. With this much heating capacity the boiler becomes secondary to the solar system and the majority of space heating done by the solar panels. System efficiency is maintained by sensors that continually feed information to the controller. The controller moves the fluid through the collector at the appropriate time and the fluid flows rapidly so that there are not wild fluctuations in the temperature making it more cost effective.
LaPlata County, Archuleta County, Montezuma County and San Juan County have a cold climate period coupled with good solar resources making active solar heating systems the most cost effective.