Profile: Deiter Bros. Heating Cooling Energy provides fuel & heating oil, HVAC, heating, air conditioning, radiant heat, heat pump, furnace, on-site & fleet fueling, and indoor comfort services. We routinely service all heating and air conditioning systems. Our Signature series design has built-in safeties to protect system components. We also service various energy efficient add-on items, such as, hot water heaters, humidifiers, electronic air cleaners, energy recovery ventilators, electrostatic air filters, and energy saving set back thermostats. We maintain on-site storage of fuel oil. We test our products and clean all storage vessels on a regular basis.