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  1. Horizontal Air Delivery Hydronic Heater (23)
  2. Vertical Air Delivery Hydronic Heater (15)
BTU/HR Heating
  1. 5,001 To 10,000 (1)
  2. 10,001 To 20,000 (2)
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  6. 6001 To 8000 CFM (1)
  7. 8001 To 10000 CFM (2)
  8. 10001 To 12000 CFM (1)
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  1. Top And Bottom Piping (34)
  2. Side Piping (4)
  3. Standard Tubes (38)
Price
  1. $0.00 - $1,000.00 (20)
  2. $1,000.00 - $2,000.00 (13)
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Hydronic Unit Heaters

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Sterling | HS-108 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 108,000 BTU/HR (2 PSI Steam) | 1800 CFM

Sterling | HS-108 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 108,000 BTU/HR (2 PSI Steam) | 1800 CFM

Regular Price: $1,164.00

Special Price: $895.00

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Sterling | HS-108A Horizontal Hydronic Unit Heater | Side Piping Connections | Hot Water Only | 8,030 BTU/HR (200F Water) | 245 CFM

Sterling | HS-108A Horizontal Hydronic Unit Heater | Side Piping Connections | Hot Water Only | 8,030 BTU/HR (200F Water) | 245 CFM

Regular Price: $490.00

Special Price: $377.00

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Sterling | HS-118A Horizontal Hydronic Unit Heater | Side Piping Connections | Hot Water Only | 18,400 BTU/HR (200F Water) | 500 CFM

Sterling | HS-118A Horizontal Hydronic Unit Heater | Side Piping Connections | Hot Water Only | 18,400 BTU/HR (200F Water) | 500 CFM

Regular Price: $535.00

Special Price: $411.00

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Sterling | HS-120 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 120,000 BTU/HR (2 PSI Steam) | 1900 CFM

Sterling | HS-120 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 120,000 BTU/HR (2 PSI Steam) | 1900 CFM

Regular Price: $1,241.00

Special Price: $955.00

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Sterling | HS-125A Horizontal Hydronic Unit Heater | Side Piping Connections | Hot Water Only | 24,800 BTU/HR (200F Water) | 580 CFM

Sterling | HS-125A Horizontal Hydronic Unit Heater | Side Piping Connections | Hot Water Only | 24,800 BTU/HR (200F Water) | 580 CFM

Regular Price: $610.00

Special Price: $469.00

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Sterling | HS-132 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 132,000 BTU/HR (2 PSI Steam) | 2000 CFM

Sterling | HS-132 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 132,000 BTU/HR (2 PSI Steam) | 2000 CFM

Regular Price: $1,357.00

Special Price: $1,044.00

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Sterling | HS-136A Horizontal Hydronic Unit Heater | Side Piping Connections | Hot Water Only | 35,900 BTU/HR (200F Water) | 850 CFM

Sterling | HS-136A Horizontal Hydronic Unit Heater | Side Piping Connections | Hot Water Only | 35,900 BTU/HR (200F Water) | 850 CFM

Regular Price: $677.00

Special Price: $521.00

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Sterling | HS-144 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 144,000 BTU/HR (2 PSI Steam) | 2200 CFM

Sterling | HS-144 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 144,000 BTU/HR (2 PSI Steam) | 2200 CFM

Regular Price: $1,399.00

Special Price: $1,076.00

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Sterling | HS-156 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 156,000 BTU/HR (2 PSI Steam) | 2600 CFM

Sterling | HS-156 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 156,000 BTU/HR (2 PSI Steam) | 2600 CFM

Regular Price: $1,475.00

Special Price: $1,134.00

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Sterling | HS-18 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 18,000 BTU/HR (2 PSI Steam) | 395 CFM

Sterling | HS-18 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 18,000 BTU/HR (2 PSI Steam) | 395 CFM

Regular Price: $505.00

Special Price: $389.00

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Sterling | HS-180 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 180,000 BTU/HR (2 PSI Steam) | 2200 CFM

Sterling | HS-180 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 180,000 BTU/HR (2 PSI Steam) | 2200 CFM

Regular Price: $1,539.00

Special Price: $1,184.00

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Sterling | HS-204 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 204,000 BTU/HR (2 PSI Steam) | 2900 CFM

Sterling | HS-204 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 204,000 BTU/HR (2 PSI Steam) | 2900 CFM

Regular Price: $1,644.00

Special Price: $1,264.00

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Sterling | HS-24 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 24,000 BTU/HR (2 PSI Steam) | 450 CFM

Sterling | HS-24 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 24,000 BTU/HR (2 PSI Steam) | 450 CFM

Regular Price: $558.00

Special Price: $429.00

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Sterling | HS-240 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 240,000 BTU/HR (2 PSI Steam) | 3500 CFM

Sterling | HS-240 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 240,000 BTU/HR (2 PSI Steam) | 3500 CFM

Regular Price: $1,971.00

Special Price: $1,516.00

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Sterling | HS-280 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 280,000 BTU/HR (2 PSI Steam) | 4200 CFM

Sterling | HS-280 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 280,000 BTU/HR (2 PSI Steam) | 4200 CFM

Regular Price: $2,172.00

Special Price: $1,671.00

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Sterling | HS-300 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 300,000 BTU/HR (2 PSI Steam) | 5000 CFM

Sterling | HS-300 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 300,000 BTU/HR (2 PSI Steam) | 5000 CFM

Regular Price: $2,463.00

Special Price: $1,894.00

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Sterling | HS-36 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 36,000 BTU/HR (2 PSI Steam) | 550 CFM

Sterling | HS-36 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 36,000 BTU/HR (2 PSI Steam) | 550 CFM

Regular Price: $631.00

Special Price: $485.00

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Sterling | HS-360 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 360,000 BTU/HR (2 PSI Steam) | 5500 CFM

Sterling | HS-360 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 360,000 BTU/HR (2 PSI Steam) | 5500 CFM

Regular Price: $2,656.00

Special Price: $2,043.00

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Sterling | HS-48 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 48,000 BTU/HR (2 PSI Steam) | 750 CFM

Sterling | HS-48 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 48,000 BTU/HR (2 PSI Steam) | 750 CFM

Regular Price: $769.00

Special Price: $592.00

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Sterling | HS-60 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 60,000 BTU/HR (2 PSI Steam) | 900 CFM

Sterling | HS-60 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 60,000 BTU/HR (2 PSI Steam) | 900 CFM

Regular Price: $813.00

Special Price: $625.00

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Sterling | HS-72 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 72,000 BTU/HR (2 PSI Steam) | 1100 CFM

Sterling | HS-72 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 72,000 BTU/HR (2 PSI Steam) | 1100 CFM

Regular Price: $839.00

Special Price: $645.00

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Sterling | HS-84 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 84,000 BTU/HR (2 PSI Steam) | 1400 CFM

Sterling | HS-84 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 84,000 BTU/HR (2 PSI Steam) | 1400 CFM

Regular Price: $872.00

Special Price: $671.00

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Sterling | HS-96 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 96,000 BTU/HR (2 PSI Steam) | 1400 CFM

Sterling | HS-96 Horizontal Hydronic Unit Heater | Top & Bottom Piping Connections | Steam Or Hot Water | 96,000 BTU/HR (2 PSI Steam) | 1400 CFM

Regular Price: $1,019.00

Special Price: $784.00

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Sterling | VS-104 Vertical Hydronic Unit Heater | Hot Water Or Steam | 101,800 BTU/HR (2 PSI Steam) | 1490 CFM

Sterling | VS-104 Vertical Hydronic Unit Heater | Hot Water Or Steam | 101,800 BTU/HR (2 PSI Steam) | 1490 CFM

Regular Price: $987.00

Special Price: $759.00

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Sterling | VS-125 Vertical Hydronic Unit Heater | Hot Water Or Steam | 124,400 BTU/HR (2 PSI Steam) | 1790 CFM

Sterling | VS-125 Vertical Hydronic Unit Heater | Hot Water Or Steam | 124,400 BTU/HR (2 PSI Steam) | 1790 CFM

Regular Price: $1,067.00

Special Price: $821.00

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Sterling | VS-144 Vertical Hydronic Unit Heater | Hot Water Or Steam | 152,000 BTU/HR (2 PSI Steam) | 2220 CFM

Sterling | VS-144 Vertical Hydronic Unit Heater | Hot Water Or Steam | 152,000 BTU/HR (2 PSI Steam) | 2220 CFM

Regular Price: $1,264.00

Special Price: $972.00

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Sterling | VS-164 Vertical Hydronic Unit Heater | Hot Water Or Steam | 173,000 BTU/HR (2 PSI Steam) | 2620 CFM

Sterling | VS-164 Vertical Hydronic Unit Heater | Hot Water Or Steam | 173,000 BTU/HR (2 PSI Steam) | 2620 CFM

Regular Price: $1,324.00

Special Price: $1,018.00

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Sterling | VS-200 Vertical Hydronic Unit Heater | Hot Water Or Steam | 210,200 BTU/HR (2 PSI Steam) | 3200 CFM

Sterling | VS-200 Vertical Hydronic Unit Heater | Hot Water Or Steam | 210,200 BTU/HR (2 PSI Steam) | 3200 CFM

Regular Price: $1,492.00

Special Price: $1,147.00

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Sterling | VS-237 Vertical Hydronic Unit Heater | Hot Water Or Steam | 249,800 BTU/HR (2 PSI Steam) | 4180 CFM

Sterling | VS-237 Vertical Hydronic Unit Heater | Hot Water Or Steam | 249,800 BTU/HR (2 PSI Steam) | 4180 CFM

Regular Price: $2,060.00

Special Price: $1,585.00

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Sterling | VS-285 Vertical Hydronic Unit Heater | Hot Water Or Steam | 283,800 BTU/HR (2 PSI Steam) | 4430 CFM

Sterling | VS-285 Vertical Hydronic Unit Heater | Hot Water Or Steam | 283,800 BTU/HR (2 PSI Steam) | 4430 CFM

Regular Price: $2,167.00

Special Price: $1,667.00

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Sterling | VS-317 Vertical Hydronic Unit Heater | Hot Water Or Steam | 333,400 BTU/HR (2 PSI Steam) | 5210 CFM

Sterling | VS-317 Vertical Hydronic Unit Heater | Hot Water Or Steam | 333,400 BTU/HR (2 PSI Steam) | 5210 CFM

Regular Price: $2,334.00

Special Price: $1,796.00

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Sterling | VS-367 Vertical Hydronic Unit Heater | Hot Water Or Steam | 386,000 BTU/HR (2 PSI Steam) | 6140 CFM

Sterling | VS-367 Vertical Hydronic Unit Heater | Hot Water Or Steam | 386,000 BTU/HR (2 PSI Steam) | 6140 CFM

Regular Price: $2,648.00

Special Price: $2,037.00

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Sterling | VS-40 Vertical Hydronic Unit Heater | Hot Water Or Steam | 41,300 BTU/HR (2 PSI Steam) | 595 CFM

Sterling | VS-40 Vertical Hydronic Unit Heater | Hot Water Or Steam | 41,300 BTU/HR (2 PSI Steam) | 595 CFM

Regular Price: $745.00

Special Price: $573.00

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Sterling | VS-495 Vertical Hydronic Unit Heater | Hot Water Or Steam | 496,000 BTU/HR (2 PSI Steam) | 8020 CFM

Sterling | VS-495 Vertical Hydronic Unit Heater | Hot Water Or Steam | 496,000 BTU/HR (2 PSI Steam) | 8020 CFM

Regular Price: $3,728.00

Special Price: $2,868.00

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Sterling | VS-585 Vertical Hydronic Unit Heater | Hot Water Or Steam | 585,000 BTU/HR (2 PSI Steam) | 9450 CFM

Sterling | VS-585 Vertical Hydronic Unit Heater | Hot Water Or Steam | 585,000 BTU/HR (2 PSI Steam) | 9450 CFM

Regular Price: $4,511.00

Special Price: $3,470.00

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Sterling | VS-62 Vertical Hydronic Unit Heater | Hot Water Or Steam | 65,500 BTU/HR (2 PSI Steam) | 989 CFM

Sterling | VS-62 Vertical Hydronic Unit Heater | Hot Water Or Steam | 65,500 BTU/HR (2 PSI Steam) | 989 CFM

Regular Price: $768.00

Special Price: $591.00

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Sterling | VS-700 Vertical Hydronic Unit Heater | Hot Water Or Steam | 705,000 BTU/HR (2 PSI Steam) | 11000 CFM

Sterling | VS-700 Vertical Hydronic Unit Heater | Hot Water Or Steam | 705,000 BTU/HR (2 PSI Steam) | 11000 CFM

Regular Price: $5,021.00

Special Price: $3,862.00

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Sterling | VS-77 Vertical Hydronic Unit Heater | Hot Water Or Steam | 80,600 BTU/HR (2 PSI Steam) | 1200 CFM

Sterling | VS-77 Vertical Hydronic Unit Heater | Hot Water Or Steam | 80,600 BTU/HR (2 PSI Steam) | 1200 CFM

Regular Price: $918.00

Special Price: $706.00

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