1-800-554-1007 sales@heatco.com Products ▼ What’s New? Parts Documents Videos FAQ ▼ Calculators ▼ Contact Us Register or Log In ▼ EF Units 90+ Condensing Furnace with 30-100°F Temp Rise Product Specification Product Manual Submittal / Order Information Note: You must be logged in to view CAD and Bill of Materials (BOM) files. Search: Model Number PDF Max Input MBH Max Output MBH Airflow Exhaust Discharge Burner Model # Burner Turndown Burner Min BTU Dim A Dim B Dim C Dim D Weight (Lbs.) Max CFM Max APD @ Min Rise Max Temp Rise Min CFM Min APD @ Max Rise EF250 PDF 275 248 Right to Left Out V1 20 to 1 36000 49 38 54 23 841 7639 0.21 100 2292 0.02 EF250 PDF 275 248 Right to Left Up V1 20 to 1 36000 19.9 40.55 23.96 18 841 7639 0.21 100 2292 0.02 EF250 PDF 275 248 Left to Right Out V1 20 to 1 36000 49 38 54 23 841 7639 0.23 100 2292 0.02 EF250 PDF 275 248 Left to Right Up V1 20 to 1 36000 19.9 40.55 23.96 18 841 7639 0.23 100 2292 0.02 EF400 PDF 450 405 Left to Right Out V1 20 to 1 36000 49 47 60 24 1040 12500 0.64 100 3750 0.06 EF400 PDF 450 405 Right to Left Up V1 20 to 1 36000 49 47 60 19 1040 12500 0.61 100 3750 0.06 EF400 PDF 450 405 Right to Left Out V1 20 to 1 36000 49 47 60 24 1040 12500 0.61 100 3750 0.06 EF400 PDF 450 405 Left to Right Up V1 20 to 1 36000 49 47 60 19 1040 12500 0.64 100 3750 0.06 EF550 PDF 600 540 Left to Right Up V2 20 to 1 48000 51 56 60 23 1500 16667 1.62 100 5000 0.15 EF550 PDF 600 540 Left to Right Out V2 20 to 1 48000 51 56 60 29 1500 16667 1.62 100 5000 0.15 EF550 PDF 600 540 Right to Left Out V2 20 to 1 48000 51 56 60 29 1500 16667 1.43 100 5000 0.13 EF550 PDF 600 540 Right to Left Up V2 20 to 1 48000 51 56 60 23 1500 16667 1.43 100 5000 0.13 EF750 PDF 835 752 Right to Left Out V2 20 to 1 48000 63 58 68 31 1915 23148 2.32 100 6944 0.21 EF750 PDF 835 752 Right to Left Up V2 20 to 1 48000 63 58 68 24 1915 23148 2.32 100 6944 0.21 EF750 PDF 835 752 Left to Right Out V2 20 to 1 48000 63 58 68 31 1915 23148 2.53 100 6944 0.23 EF750 PDF 835 752 Left to Right Up V2 20 to 1 48000 63 58 68 24 1915 23148 2.53 100 6944 0.23 EF900 PDF 1000 900 Right to Left Out V2 20 to 1 48000 63 65 74 31 2298 27778 2.84 100 8333 0.25 EF900 PDF 1000 900 Right to Left Up V2 20 to 1 48000 63 65 74 25 2298 27778 2.84 100 8333 0.25 EF900 PDF 1000 900 Left to Right Out V2 20 to 1 48000 63 65 74 31 2298 27778 3.24 100 8333 0.29 EF900 PDF 1000 900 Left to Right Up V2 20 to 1 48000 63 65 74 25 2298 27778 3.24 100 8333 0.29 EF1000 PDF 1120 1008 Right to Left Up V4 20 to 1 84000 63 65 74 25 2318 31111 3.44 100 9333 0.31 EF1000 PDF 1120 1008 Right to Left Out V4 20 to 1 84000 63 65 74 31 2318 31111 3.44 100 9333 0.31 EF1000 PDF 1120 1008 Left to Right Up V4 20 to 1 84000 63 65 74 25 2318 31111 3.93 100 9333 0.35 EF1000 PDF 1120 1008 Left to Right Out V4 20 to 1 84000 63 65 74 31 2318 31111 3.93 100 9333 0.35 EF1250 PDF 1400 1260 Left to Right Up V4 20 to 1 84000 63 72 80 29 2798 38889 5.64 100 11667 0.5 EF1250 PDF 1400 1260 Left to Right Out V4 20 to 1 84000 63 72 80 36 2798 38889 5.64 100 11667 0.5 EF1250 PDF 1400 1260 Right to Left Out V4 20 to 1 84000 63 72 80 36 2798 38889 5.01 100 11667 0.44 EF1250 PDF 1400 1260 Right to Left Up V4 20 to 1 84000 63 72 80 29 2798 38889 5.01 100 11667 0.44 EF1500 PDF 1650 1485 Right to Left Up V4 20 to 1 84000 63 75.5 92 26 3150 45833 5.6 100 13750 0.49 EF1500 PDF 1650 1485 Left to Right Up V4 20 to 1 84000 63 75.5 92 26 3150 45833 6.21 100 13750 0.55 EF1500 PDF 1650 1485 Left to Right Out V4 20 to 1 84000 63 75.5 92 32.6 3150 45833 6.21 100 13750 0.55 EF1500 PDF 1650 1485 Right to Left Out V4 20 to 1 84000 63 75.5 92 32.6 3150 45833 5.6 100 13750 0.49 EF1750 PDF 1950 1755 Right to Left Out V6 25 to 1 84000 63 75.5 114.94 32.57 N/a 54167 4.42 100 16250 0.4 EF1750 PDF 1950 1755 Right to Left Up V6 25 to 1 84000 63 75.5 114.94 26 N/a 54167 4.42 100 16250 0.4 EF1750 PDF 1950 1755 Left to Right Out V6 25 to 1 84000 63 75.5 114.94 32.57 N/a 54167 5.86 100 16250 0.52 EF1750 PDF 1950 1755 Left to Right Up V6 25 to 1 84000 63 75.5 114.94 26 N/a 54167 5.86 100 16250 0.52 EF2000 PDF 2250 2025 Right to Left Out V6 25 to 1 84000 63 75.5 114.94 32.57 N/a 62500 5.93 100 18750 0.53 EF2000 PDF 2250 2025 Right to Left Up V6 25 to 1 84000 63 75.5 114.94 26 N/a 62500 5.93 100 18750 0.53 EF2000 PDF 2250 2025 Left to Right Out V6 25 to 1 84000 63 75.5 114.94 32.57 N/a 62500 7.84 100 18750 0.7 EF2000 PDF 2250 2025 Left to Right Up V6 25 to 1 84000 63 75.5 114.94 26 N/a 62500 7.84 100 18750 0.7 Our Mission Our mission is to design, build, and deploy America’s highest quality gas heaters while providing industry-leading customer satisfaction. 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