The present invention is related to the field of heating, ventilation and air conditioning (HVAC). More particularly, the present invention is related to methods and systems for controlled heating and cooling in order to reduce costs and the carbon footprint of said heating and cooling by optimizing...http://www.google.ca/patents/US20100211224?utm_source=gb-gplus-sharePatent US20100211224 - HEATING AND COOLING CONTROL METHODS AND SYSTEMS