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Boilers

Discover the perfect blend of luxury, affordability, and top-tier performance with our Boiler Collection, designed to deliver the ultimate heating experience for both homes and businesses. Whether you're a homeowner, tradesperson, or contractor, we've got the perfect boiler for you.

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Parts & Accessories

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297 products

Brass automatic air vent with magnetic dirt separator, 1-1/4 inch sweat connection fitting.

Caleffi 546335AM DirtMagPRO 1-1/4" sweat

SKU #: CALE546335AM   |   MPN #: 546335AM
$283.11
$283.11 $0.00
MSRP: $390

Available in stock

Brass DirtMagPRO separator with copper press connections, blue Caleffi label, black base band, red ball valve, and drain port

Caleffi 546366AM DirtMagPRO 1" press

SKU #: CALE546366AM   |   MPN #: 546366AM
$227.50
$227.50 $0.00
MSRP: $306

Available in stock

Brass water filter with blue Caleffi label, black band, yellow warning symbol, and red shutoff valve at bottom.

Caleffi 546341AM DirtMagPRO 1-1/2" sweat

SKU #: CALE546341AM   |   MPN #: 546341AM
$365.10
$365.10 $0.00
MSRP: $508

Available in stock

Brass pressure relief valve with white and black regulator body, attached pressure gauge, and 3/4" sweat connections.

Caleffi 535951HA PressCal PRV ASSE 1003, 3/4" Sweat w/ Pressure Gauge

SKU #: CALE535951HA   |   MPN #: 535951HA
$129.47
$129.47 $0.00
MSRP: $161

Available in stock

Brass elbow lockshield valve with gray cap and detached fitting connector showing male threads on both ends.

Caleffi 342452 Elbow Lockshield 1/2"M x 3/4"M

SKU #: CALE342452   |   MPN #: 342452
$43.85
$43.85 $0.00
MSRP: $48.30

Special Order. Expect 4-6 weeks for delivery, subject to change

Brass straight lockshield valve with white cap, 1/2" and 3/4" connections, and adjustment nut.

Caleffi 343452 Straight Lockshield 1/2" X 3/4"

SKU #: CALE343452   |   MPN #: 343452
$45.94
$45.94 $0.00
MSRP: $50.70

Special Order. Expect 4-6 weeks for delivery, subject to change

Caleffi solar air vent with 1/2" NPT threaded connections, cylindrical metal body with ridged cap and vent valve on top.

Caleffi 251004A High Capacity Solar Air Vent 1/2" NPT

SKU #: CALE251004A   |   MPN #: 251004A
$138.13
$138.13 $0.00
MSRP: $168

Special Order. Expect 4-6 weeks for delivery, subject to change

Brass 3-way mixing valve with dial thermometer gauge and black actuator knob.

Caleffi 520516A AngleMix 3- Way Mixing valve 3/4" Press Temp Probe

SKU #: CALE520516A   |   MPN #: 520516A
$233.72
$233.72 $0.00
MSRP: $304

Available in stock

Brass boiler trim kit with gray expansion tank, pressure relief valve, and backflow preventer assembly.

Caleffi NA553369 Boiler Trim Kit, 1" Sweat, 4.4Gal with ASSE 1012 Back Flow

SKU #: CALENA553369   |   MPN #: NA553369
$504.88
$504.88 $0.00
MSRP: $684

Special Order. Expect 4-6 weeks for delivery, subject to change

Brass boiler trim kit with pressure relief valve, expansion tank, and gauges mounted on gray cylindrical tank.

Caleffi NA553366 Boiler Trim Kit, 1" Press, 4.4Gal with ASSE 1012 Back Flow

SKU #: CALENA553366   |   MPN #: NA553366
$549.59
$549.59 $0.00
MSRP: $750

Special Order. Expect 4-6 weeks for delivery, subject to change

Caleffi boiler trim kit with gray expansion tank, brass valves, gauges, and backflow preventer assembly.

Caleffi NA553366R Boiler Trim Kit, 1" Press, 4.4Gal with ASSE 1013 Back Flow

SKU #: CALENA553366R   |   MPN #: NA553366R
$831.61
$831.61 $0.00
MSRP: $1,167

Special Order. Expect 4-6 weeks for delivery, subject to change

Brass boiler trim kit with gray expansion tank, backflow preventer, gauges, and multiple valve connections.

Caleffi NA553362R Boiler Trim Kit, 1" NPT, 4.4Gal with ASSE 1013 Back Flow

SKU #: CALENA553362R   |   MPN #: NA553362R
$795.09
$795.09 $0.00
MSRP: $1,113

Special Order. Expect 4-6 weeks for delivery, subject to change

Boiler trim kit with gray expansion tank, brass valves, copper fittings, and connectors for 1" NPT applications.

Caleffi NA553362 Boiler Trim Kit, 1" NPT, 4.4Gal with ASSE 1012 Back Flow

SKU #: CALENA553362   |   MPN #: NA553362
$515.78
$515.78 $0.00
MSRP: $700

Special Order. Expect 4-6 weeks for delivery, subject to change

Brass boiler trim kit with gray expansion tank, pressure relief valve, and backflow preventer assembly.

Caleffi NA553372 Boiler Trim Kit, 1 1/4" NPT, 4.4Gal with ASSE 1012 Back Flow

SKU #: CALENA553372   |   MPN #: NA553372
$591.45
$591.45 $0.00
MSRP: $812

Special Order. Expect 4-6 weeks for delivery, subject to change

Brass boiler trim kit with gray expansion tank, valve assembly, and backflow preventer connected by copper tubing.

Caleffi NA553369R Boiler Trim Kit, 1" Sweat, 4.4Gal with ASSE 1013 Back Flow

SKU #: CALENA553369R   |   MPN #: NA553369R
$787.57
$787.57 $0.00
MSRP: $1,102

Special Order. Expect 4-6 weeks for delivery, subject to change

Brass boiler trim kit with gray expansion tank, pressure relief valve, and backflow preventer assembly.

Caleffi NA553376 Boiler Trim Kit, 1 1/4" Press, 4.4Gal with ASSE 1012 Back Flow

SKU #: CALENA553376   |   MPN #: NA553376
$652.39
$652.39 $0.00
MSRP: $902

Special Order. Expect 4-6 weeks for delivery, subject to change

Brass boiler trim kit with gray expansion tank, pressure relief valve, and backflow preventer assembly.

Caleffi NA553379 Boiler Trim Kit, 1 1/4" Sweat, 4.4Gal with ASSE 1012 Back Flow

SKU #: CALENA553379   |   MPN #: NA553379
$579.95
$579.95 $0.00
MSRP: $795

Special Order. Expect 4-6 weeks for delivery, subject to change

Honeywell Q390A1103 48-inch thermocouple with brown copper wire and metal connector probe.

Honeywell Q390A1103 48" Thermocouple

SKU #: HONQ390A1103   |   MPN #: Q390A1103
$21.19
$21.19 $0.00
MSRP: $28.36

Available in stock

Beige plastic thermostat guard with rounded edges, ventilation slots on sides, and mounting hardware visible.

Honeywell TG511D1004 Medium Universal Thermostat Guard Beige

SKU #: HONTG511D1004   |   MPN #: TG511D1004
$117.97
$117.97 $0.00
MSRP: $223.76

Available in stock

Robertshaw 10-227 S1 pilot sensor with gray cylindrical body and metal probe tip.

Robertshaw 10-227 S1 Pilot Sensor

SKU #: ROBERT10227   |   MPN #: 10-227
$26.15
$26.15 $0.00
MSRP: $52.50

Available in stock

Boilers You Can Count On

Step into a world of unmatched comfort with our boilers for sale, designed to transform any space into a warm, inviting haven. We believe that luxury and quality should be accessible to everyone, which is why our new boilers are competitively priced without compromising on top-tier craftsmanship.

Whether you're looking to upgrade to an energy-efficient boiler or need a reliable solution for your residential heating needs, we’ve got you covered. Explore options like our combination boilers for versatile efficiency, hydronic boilers for consistent heating, or durable steam boilers for robust performance.

Comprehensive Selection Backed by Trusted Brands

Our extensive range of new boilers features top names in the industry, including Caleffi, Danfoss, Zilmet, Honeywell, and more. With a focus on quality and performance, these industry leaders ensure every product delivers dependable results.

We also provide essential add-ons like expansion tanks to complete your heating system. Whether you're upgrading a small residential space or outfitting a larger property, we have tailored solutions to fit your budget and project needs. With competitive pricing and a wide range of categories, we’ll help you find the perfect energy-efficient boiler.

Have questions or need assistance? Contact us today for expert advice on specs or model recommendations.
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