Gas Boilers

SUMMER BLOWOUT SALE
Save BIG on Fans, Air Conditioners & More
Offer Ends 06/09/25 Shop All Deals
Local Pickup FAQ's
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 158k BTU Gross Input, 135k BTU DOE Capacity, 117k BTU Net IBR Capacity. Includes Circulator.
$4,034.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 100k BTU Gross Input, 85k BTU DOE Capacity, 74k BTU Net IBR Capacity. Includes Circulator.
$2,898.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 90k BTU Gross Input, 77k BTU DOE Capacity, 67k BTU Net IBR Capacity. Includes Circulator.
$3,204.00
Factory-Direct
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 550K BTU Gross Input, 517K BTU DOE Capacity, 450K BTU Net IBR Capacity.
$13,812.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 80K BTU Gross Input, 74K BTU DOE Capacity, 64K BTU Net IBR Capacity. Includes Circulator.
$3,927.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 272K BTU Maximum Input Capacity, 227K BTU DOE Capacity, 197K BTU Net IBR Capacity.
$3,173.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Included Grundfos Circulator and LWCO. Ratings: 207K BTU Gross Input, 174K BTU DOE Capacity, 151K BTU Net IBR Capacity.
$4,423.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Included Taco Circulator and LWCO. Ratings: 103K BTU Gross Input, 87K BTU DOE Capacity, 76K BTU Net IBR Capacity.
$3,061.00
Factory-Direct
Free Shipping & Lift Gate
2% Check Discount
Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 150K BTU Gross Input, 142K BTU DOE Capacity, 123K BTU Net IBR Capacity. Includes Taco Circulator.
$1,729.00
Was $3,181.00
SAVE $1,452.00
Factory-Direct
Free Shipping & Lift Gate
2% Check Discount
Wall Mounted, Condensing Combi Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 180K BTU Gross Input, 169K BTU DOE Capacity, 147K BTU Net IBR Capacity. Includes Taco Circulator.
$1,780.00
Was $3,200.00
SAVE $1,420.00
Factory-Direct
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 94.5K BTU Gross Input, 81K BTU DOE Capacity, 70K BTU Net IBR Capacity. Includes Circulator.
$3,014.00
Factory-Direct
Free Shipping & Lift Gate
2% Check Discount
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 150K BTU Gross Input, 139K BTU DOE Capacity, 121K BTU Net IBR Capacity. Includes Circulator.
$3,941.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 199K BTU Gross Input, 184K BTU DOE Capacity, 160K BTU Net IBR Capacity. Includes Circulator.
$4,089.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler with Step-opening Gas Valve. Ships Packaged. Ratings: 140K BTU Gross Input, 115K BTU DOE Capacity, 86K BTU Net IBR Capacity.
$3,892.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 1,000K BTU Gross Input, 958K BTU DOE Capacity, 833K BTU Net IBR Capacity.
$26,934.00
Factory-Direct
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Included Taco Circulator and LWCO. Ratings: 140K BTU Gross Input, 117K BTU DOE Capacity, 102K BTU Net IBR Capacity.
$2,881.00
Factory-Direct
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Included Taco Circulator and LWCO. Ratings: 70K BTU Gross Input, 59K BTU DOE Capacity, 51K BTU Net IBR Capacity.
$2,481.00
Factory-Direct
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Condensing Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 175K BTU Gross Input, 161K BTU DOE Capacity, 140K BTU Net IBR Capacity. Includes Circulator.
$5,789.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Condensing Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 70K BTU Gross Input, 65K BTU DOE Capacity, 56K BTU Net IBR Capacity. Includes Circulator.
$4,179.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Condensing Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 140K BTU Gross Input, 130K BTU DOE Capacity, 113K BTU Net IBR Capacity. Includes Circulator.
$5,149.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Disassembled. Ratings: 175K BTU Gross Input, 144K BTU DOE Capacity, 108K BTU Net IBR Capacity.
$4,457.00
Factory-Direct
Free Shipping & Lift Gate
2% Check Discount
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.
$6,574.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor/Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 299K BTU Gross Input, 280K BTU DOE Capacity, 243K BTU Net IBR Capacity. Includes Circulator.
$8,804.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Floor Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 230K BTU Gross Input, 207K BTU DOE Capacity, 183K BTU Net IBR Capacity. Includes Circulator.
$5,568.00
In-Stock
Free Shipping & Lift Gate
2% Check Discount
Displaying Products 25 - 48 (of 328)
Tools & Articles
Gas boilers are central heating systems that use liquid propane or natural gas to provide heating throughout a residential or commercial building. With all the top brands and styles available, you can find the perfect gas boiler today on eComfort.com
Parts & Accessories
Conversion Kits
Gas Boiler Conversion Kits
Mounting Hardware
Gas Boiler Mounting Hardware
Condensate Accessories
Gas Boiler Condensate Accessories
DHW Production
Gas Boiler DHW Production
Venting Materials
Gas Boiler Venting Materials
Piping & Trim Accessories
Gas Boiler Piping & Trim Accessories
Condensate Pumps
Gas Boiler Condensate Pumps
Parts
Gas Boiler Parts