Improving the efficiency of your oil heating system 

 - Washington:  Deparment of Energy,  1990 
 - 10 p.  ilustraciones. 
<br/><br/>02431 
<br/><br/>Three steps to saving money and energy with oil heating systems : annual servicing and cleaning, turn down the thermostat temperature at - point, and system modificatin or replacement. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calefacción<br/>Calefactores<br/>Conservación de la Energía
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Estados Unidos
<br/><br/><label>Dewey Class. No.: </label>354.43  / E793