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Learn More About Noritz NRCB199DV-LPacw-sale-badge
Noritz Condensing Boiler 199,000 BTU Propane Direct Vent Indoor
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Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 120K BTU Gross Input, 111K BTU DOE Capacity, 97K BTU Net IBR Capacity. Includes Circulator.
Item#: 82296
Model#: NRCB199DV-LP
Brand: Noritz
$2,329.00
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
9 In-Stock
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Noritz Condensing Boiler 199,000 BTU Propane Direct Vent Indoor
Learn More About Weil-McLain 383100050acw-sale-badge
Weil-McLain AquaBalance 144K BTU 95% AFUE Combi Gas Boiler DV
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Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 155K BTU Gross Input, 144K BTU DOE Capacity, 125K BTU Net IBR Capacity. Includes Circulator.
Item#: 94361
Model#: 383100050
Brand: Weil-McLain
$2,159.00
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
10 In-Stock
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Weil-McLain AquaBalance 144K BTU 95% AFUE Combi Gas Boiler DV
Learn More About Weil-McLain 383100035acw-sale-badge
Weil-McLain AquaBalance 75K BTU 95% AFUE Hot Water Gas Boiler DV
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Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 80K BTU Gross Input, 75K BTU DOE Capacity, 65K BTU Net IBR Capacity.
Item#: 94356
Model#: 383100035
Brand: Weil-McLain
$1,769.00
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
2 In-Stock
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Weil-McLain AquaBalance 75K BTU 95% AFUE Hot Water Gas Boiler DV
Learn More About Noritz NRCB199DV-NGacw-sale-badge
Noritz Condensing Boiler 199,000 BTU Natural Gas Direct Vent Indoor
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Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 120K BTU Gross Input, 111K BTU DOE Capacity, 97K BTU Net IBR Capacity. Includes Circulator.
Item#: 82295
Model#: NRCB199DV-NG
Brand: Noritz
$2,329.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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3 In-Stock
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Noritz Condensing Boiler 199,000 BTU Natural Gas Direct Vent Indoor
Learn More About Bosch Thermotechnology ZWB42-3acw-sale-badge
Bosch 134,000 BTU 95% AFUE Condensing Boiler Greenstar NG/LP Combi 151
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Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 152K BTU Gross Input, 134K BTU DOE Capacity, 117K BTU Net IBR Capacity. Includes Circulator.
Item#: 37395
Model#: ZWB42-3
Brand: Bosch Thermotechnology
$2,649.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Backordered
Estimated Ship Date February 26 On New Orders
Bosch 134,000 BTU 95% AFUE Condensing Boiler Greenstar NG/LP Combi 151
Learn More About Weil-McLain 383100045acw-sale-badge
Weil-McLain AquaBalance 112K BTU 95% AFUE Hot Water Gas Boiler DV
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Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 120K BTU Gross Input, 112K BTU DOE Capacity, 97K BTU Net IBR Capacity.
Item#: 94357
Model#: 383100045
Brand: Weil-McLain
$1,865.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
3 In-Stock
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Weil-McLain AquaBalance 112K BTU 95% AFUE Hot Water Gas Boiler DV
Learn More About Electro Industries EMB-S-9acw-sale-badge
Electro Industries 9 kW 31K BTU Hot Water Electric Boiler 240V 1 Phase
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Wall Mounted Boiler with Two Stage Operation. Ships Packaged.
Item#: 18277
Model#: EMB-S-9
Brand: Electro Industries
$929.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
Ships in 3-4 Weeks
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Electro Industries 9 kW 31K BTU Hot Water Electric Boiler 240V 1 Phase
Learn More About Weil-McLain 383100030acw-sale-badge
Weil-McLain AquaBalance 75K BTU 95% AFUE Combi Gas Boiler DV
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Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 80K BTU Gross Input, 75K BTU DOE Capacity, 65K BTU Net IBR Capacity. Includes Circulator.
Item#: 94359
Model#: 383100030
Brand: Weil-McLain
$2,009.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
Free Lift Gate
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
6 In-Stock
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Weil-McLain AquaBalance 75K BTU 95% AFUE Combi Gas Boiler DV
Learn More About Weil-McLain EVG 220acw-sale-badge
Weil-McLain 206K BTU 95.0% AFUE Hot Water Gas Boiler Direct Vent
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Floor/Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 220K BTU Gross Input, 206K BTU DOE Capacity, 179K BTU Net IBR Capacity. Includes Circulator.
Item#: 58491
Model#: EVG 220
Brand: Weil-McLain
$5,099.00
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
1 In-Stock
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Weil-McLain 206K BTU 95.0% AFUE Hot Water Gas Boiler Direct Vent
Learn More About Noritz NRCB180DV-NGacw-sale-badge
Noritz Condensing Boiler 180,000 BTU Natural Gas Direct Vent Indoor
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Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 100K BTU Gross Input, 92K BTU DOE Capacity, 80K BTU Net IBR Capacity. Includes Circulator.
Item#: 82299
Model#: NRCB180DV-NG
Brand: Noritz
$2,239.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
2 In-Stock
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Noritz Condensing Boiler 180,000 BTU Natural Gas Direct Vent Indoor
Learn More About Crown Boiler Co. AWR070BNST3PSUacw-sale-badge
Crown Boiler Co. 84% AFUE 59k BTU Hot Water NG Boiler Chimney Vent
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 70K BTU Gross Input, 59K BTU DOE Capacity, 51K BTU Net IBR Capacity. Includes Taco Circulator.
Item#: 103091
Model#: AWR070BNST3PSU
Brand: Crown Boiler Co.
$1,860.53
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
Free Lift Gate
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
Ships in 2-5 Business Days
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Crown Boiler Co. 84% AFUE 59k BTU Hot Water NG Boiler Chimney Vent
Learn More About Weil-McLain 381359074acw-sale-badge
Weil-McLain CGa-4-PIDN - 88K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent
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Item#: 109081
Model#: 381359074
Brand: Weil-McLain
$1,899.99
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
60 In-Stock
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Weil-McLain CGa-4-PIDN - 88K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Learn More About Weil-McLain 383900156acw-sale-badge
Weil-McLain ECO TEC 199-H BLR S1 T-0015E
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Item#: 109777
Model#: 383900156
Brand: Weil-McLain
$3,171.85
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
17 In-Stock
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Weil-McLain ECO TEC 199-H BLR S1 T-0015E
Learn More About Electro Industries EB-MS-20acw-sale-badge
Electro Industries 68K BTU Electric Hot Water Boiler 20 kW 240V 1 Ph
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Wall Mounted Boiler with Four Stage Operation. Ships Packaged.
Item#: 18280
Model#: EB-MS-20
Brand: Electro Industries
$1,629.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
This Item Is Built To Order
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Electro Industries 68K BTU Electric Hot Water Boiler 20 kW 240V 1 Ph
Learn More About Electro Industries EMB-H-9acw-sale-badge
Electro Industries 9 kW 31K BTU Hot Water Electric Boiler 240V 1 Phase
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Wall Mounted Boiler with Modulating Operation. Ships Packaged.
Item#: 18310
Model#: EMB-H-9
Brand: Electro Industries
$1,049.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
Ships in 3-4 Weeks
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Electro Industries 9 kW 31K BTU Hot Water Electric Boiler 240V 1 Phase
Learn More About Weil-McLain 383500735acw-sale-badge
Weil-McLain Ultra 155 139K 94% Hot Water Gas Boiler Direct Vent
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Floor Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 155K BTU Gross Input, 139K BTU DOE Capacity, 123K BTU Net IBR Capacity. Includes Circulator.
Item#: 79377
Model#: 383500735
Brand: Weil-McLain
$3,299.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
Free Lift Gate
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
6 In-Stock
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Weil-McLain Ultra 155 139K 94% Hot Water Gas Boiler Direct Vent
Learn More About Weil-McLain 383100055acw-sale-badge
Weil-McLain AquaBalance 144K BTU 95% AFUE Hot Water Gas Boiler DV
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Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 155K BTU Gross Input, 144K BTU DOE Capacity, 125K BTU Net IBR Capacity.
Item#: 94358
Model#: 383100055
Brand: Weil-McLain
$2,059.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
2 In-Stock
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Weil-McLain AquaBalance 144K BTU 95% AFUE Hot Water Gas Boiler DV
Learn More About Weil-McLain 383100040acw-sale-badge
Weil-McLain AquaBalance 112K BTU 95% AFUE Combi Gas Boiler DV
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Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 120K BTU Gross Input, 112K BTU DOE Capacity, 97K BTU Net IBR Capacity. Includes Circulator.
Item#: 94360
Model#: 383100040
Brand: Weil-McLain
$2,099.00
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
4 In-Stock
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Weil-McLain AquaBalance 112K BTU 95% AFUE Combi Gas Boiler DV
Learn More About Weil-McLain 381359078acw-sale-badge
Weil-McLain CGa-6-PIDN - 146K BTU - 83.2% AFUE - Hot Water Gas Boiler - Chimney Vent
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Item#: 109085
Model#: 381359078
Brand: Weil-McLain
$2,579.09
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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25 In-Stock
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Weil-McLain CGa-6-PIDN - 146K BTU - 83.2% AFUE - Hot Water Gas Boiler - Chimney Vent
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Weil-McLain CGi-5-PIN - 100K BTU - 83.3% AFUE - Hot Water Gas Boiler - Power Vent
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Item#: 109139
Model#: 381359006
Brand: Weil-McLain
$2,459.99
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Shop with Confidence knowing you have the Right system at the Right Price and shipped Right Away. We strive to give our customers the best price and service possible. If you happen to find a better price on your product(s) up to 30 days after your purchase let us know and we will match the price of any online competitor. Simply call our sales or customer service department at 866-631-6389 and one of our representatives will be happy to price match the product(s) for you.
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Weil-McLain CGi-5-PIN - 100K BTU - 83.3% AFUE - Hot Water Gas Boiler - Power Vent
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Weil-McLain ECO TEC 110-C BLR S1 T-0015E
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Item#: 109771
Model#: 383900150
Brand: Weil-McLain
$2,752.10
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Weil-McLain ECO TEC 110-C BLR S1 T-0015E
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Electro Industries 51K BTU Electric Hot Water Boiler 15 kW 240V 1 Ph
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Wall Mounted Boiler with Three Stage Operation. Ships Packaged.
Item#: 18279
Model#: EB-MS-15
Brand: Electro Industries
$1,499.00
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Electro Industries 51K BTU Electric Hot Water Boiler 15 kW 240V 1 Ph
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Weil-McLain EG-45-S-PIDN 94K BTU 82.9% AFUE Steam Gas Boiler
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Disassembled. Ratings: 150K BTU Gross Input, 125K BTU DOE Capacity, 94K BTU Net IBR Capacity.
Item#: 49525
Model#: EG-45-S-PIDN
Brand: Weil-McLain
$3,128.40
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Weil-McLain EG-45-S-PIDN 94K BTU 82.9% AFUE Steam Gas Boiler
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Weil-McLain P-SGO-4 108,000 BTU 84.0% AFUE Steam Oil Boiler
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Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.20 GPH Gross Input, 144K BTU DOE Capacity, 108K BTU Net IBR Capacity.
Item#: 49903
Model#: P-SGO-4
Brand: Weil-McLain
$2,600.09
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Ships in 2-5 Business Days
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Weil-McLain P-SGO-4 108,000 BTU 84.0% AFUE Steam Oil Boiler
Tools & Articles
How to Pick a Residential Boiler
How to Pick a Residential Boiler
Home Boiler System Overview

Boilers at ACWholesalers


A boiler is a central heating system that uses hot water or steam, which is transported through a piping system and to radiators, to heat a home.

One advantage of choosing a residential boiler system is the even distribution of heat. Hot water and steam transfer heat more effectively than air by keeping the heat closer to the ground. Another advantage is efficiency. Boilers require less energy to heat a home than forced-air systems because hot water and steam hold heat longer than air.

Residential boilers also provide flexibility by allowing for zoning different areas of the home. This way, each zone can be kept at its own temperature, maximizing comfort and reducing energy costs for areas where additional heat isn't needed.

Choosing a Residential Boiler System


Medium
A boiler can transfer heat using hot water or steam as its medium. These mediums are not interchangeable, so it is important to know what the existing pipe system is designed for.

Fuel Type
A residential boiler system is made to use one of the following as its fuel source: natural gas, liquid propane, oil, or electricity.

Vent Type
There are three venting options for a residential boiler; direct vent, chimney vent, and power vent. Each type has a different method of removing gasses and is chosen based on the home’s construction and desired efficiency of the new system.

Net I=B=R Capacity (BTU) or DOE Heating Capacity (BTU)
Steam boilers are often sized based on their Net I=B=R capacity. This BTU amount factors in piping loss, combustion efficiency, and an extra pickup factor. DOE (Department of Energy) heating capacity also factors in combustion efficiency and is commonly used to size hot water boilers.

AFUE (%)
A boiler’s AFUE (Annual Fuel Utilization Efficiency) percentage describes its efficiency. The higher the percentage, the less energy is wasted and the more efficient the model is.