With either gas or oil-heat units, SYSTEM 2000's modern boiler design and combustion chamber insure thorough, clean combustion. SYSTEM 2000 burns so cleanly, it can offer a through-the-wall venting option compatible with either a natural gas or heating oil, even if no chimney is available. With so many efficiency enhancing features (not currently calculated in the AFUE ratings) such as a 2 1/2 gallon low mass design, superior insulation and energy manager control, SYSTEM 2000 clearly outperforms other units which may have "comparable" AFUE ratings. To find out more about the true meaning of AFUE ratings and Cast Iron boilers, click here. SYSTEM 2000 has the highest seasonal efficiency of any oil or natural gas integrated system, and boasts typical retrofit savings of 39% on combined heat and hot water costs. SYSTEM 2000 incorporates all necessary safety controls and has an additional safety check for potential problems with chimneys and venting. With the system connected to an alarm interface, homeowners can have peace of mind even while away from home. SYSTEM 2000's whisper quiet operation is extraordinary. The product's new, improved air box design filters out annoying sounds and background noises. This feature is unique compared to other home heating systems. Website Credits ©1997-2004  Energy Kinetics, Inc. All rights reserved. For more information call 1-800-323-2066.		"SYSTEM 2000 has saved us hundreds of dollars a year on the cost of heating our home, without sacrificing our family's comfort." This chart compares the annualized efficiencies of typical methods of heating and domestic hot water production with SYSTEM 2000's impressive performance. The table below provides background data used to create the above "Annualized Efficiency Comparison" bar chart. This chart outlines the dramatic dollar savings potential using SYSTEM 2000 for domestic hot water production Efficiency Comparsion Conventional Boiler (Tankless Coil) Typical Home Conventional Boiler Separate Hot Water Tank System 2000 with Digital Energy Manager's Purge Control 86% AFUE 86% AFUE 87% AFUE Chimney Loss 132 gal. - 15% 118 gal. - 15% 78 gal. - 13% Jacket Loss 35 gal. - 4% 31 gal. - 4% 12 gal. - 2% Standby Loss 131 gal. - 15% 80 gal. - 10% 6 gal. - 1% Room Air Loss 85 gal. - 9.5% 70 gal. - 9% 6 gal. - 1% Home Comfort & Hot Water 497 gal. 497 gal. 497 gal. Real Annual Fuel Usage 880 gal. 796 gal. 589 gal. Net Efficiency 56% 62% 83% Click HERE to find out what you should know about AFUE ratings and Cast Iron boilers...