Caleffi

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One of the biggest names in hydronics, Caleffi has all the parts to optimize your boiler's performance. We carry a full line of Caleffi heating products, so start shopping below or call us for expert advice!
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Model Number NA15030 is a Hot Seller
Caleffi Molded Cable for connecting Grundfos VFS & RPS to WMZ-G1 Terminal Block, 10'
Model NA15030 is a Closeout
Closeout
$10.80
Was 
$15.80
SAVE $5.00
Only 2 In-Stock
Model Number 940451 is the Number 1 Seller

Caleffi - Series 940 - Radiator Adapter - 1/2" M Straight x 3/4" M Conical Connection, Package of 2

14% Buy This
$10.49
In-Stock
Model Number 200000 is the Number 2 Seller
Caleffi Thermostatic Control Head with Built-in Sensor, 45-82 F Temperature Range, used with radiator valves
14% Buy This
$33.49
Only 5 In-Stock
Model Number NA10313 is the Number 3 Seller

Caleffi - Series NA103 - Connection Fitting - 1/2" NPT Male Connection - 150 PSI Maximum Pressure

8% Buy This
$6.80
In-Stock
Model Number 682540A is the Number 4 Seller
Caleffi Series 682 Universal PEX-AL-PEX Fittings, 1/2" PEX-AL-PEX Connections, 150 psi max
$4.95
In-Stock
Model Number 680505A is the Number 5 Seller
Caleffi 3/4" Nominal Universal PEX Fittings, ASTM Pipe Size
$5.40
In-Stock
Caleffi AutoFIll Combo Automatic Boiler Fill Valve with Backflow Preventer, Pressure Indicator, 1/2" FNPT Inlet x 1/2" NPT Female Outlet
4% Buy This
$105.00
Only 2 In-Stock
Caleffi Two-pipe Straight Panel Radiators Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe)
4% Buy This
$27.00
Factory-Direct
Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:2
$22.20
In-Stock
Caleffi 1/2" Nominal Universal PEX Fittings, ASTM Pipe Size
$5.40
In-Stock
Caleffi Straight Isolation & Balancing Valve, 1/2" Straight (Radiator) x 3/4" Conical (Pipe), 2.5 Cv
2% Buy This
$22.30
Factory-Direct
Caleffi Manifolds High Temperature Flow Meter with Clearview sight-gauge, 1/2 to 2 GPM
$17.60
Factory-Direct
Caleffi DirtMag Dirt Separator with Magnet, 1" NPT Female Connections, top thread on top
1% Buy This
$122.00
Only 4 In-Stock
Caleffi Dual Check Continuous Pressure Backflow Preventer with Atmospheric Vent, 1/2" Sweat Inlet/Outlet
$43.15
Only 4 In-Stock
Caleffi Discal Air Separator with 1/2" Check Valve, 1-1/4" NPT Female Connections
$154.40
Only 4 In-Stock
Caleffi DirtMag Dirt Separator with Magnet, 1" Sweat Connections, top thread on top
1% Buy This
$110.55
Only 2 In-Stock
Caleffi Series 681 Universal PEX Fitting, 1/2" Nominal PEX Connection, 150 psi max - QTY:1
1% Buy This
Not For Individual Sale
Caleffi Replacement High Capacity Automatic Air Vent with Check Valve, 1/2" NPT Male Connections
$21.25
Factory-Direct
$20.85
Factory-Direct
Caleffi Z-One 120V Normally Closed Valve Actuator without AUX Switch, 6" Wire
$48.40
Factory-Direct
Caleffi DirtMag Dirt Separator with Magnet, 1-1/2" Female NPT Connections, top thread on top
1% Buy This
$220.70
Only 1 In-Stock
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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 may apply, see our full shipping policy for more details.
Caleffi AutoFIll Combo Automatic Boiler Fill Valve with Backflow Preventer, Pressure Indicator, 1/2" Sweat Inlet x 1/2" FNPT Outlet
1% Buy This
$94.85
Only 2 In-Stock
Caleffi Thermostatic Control Head with Remote Wall Sensor, 43-82 F Temperature Range, used with radiator valves
1% Buy This
$107.00
Factory-Direct
Caleffi Discal Air Separator with 1/2" FNPT Bottom Thread, 1" Sweat Connections
$98.45
Only 2 In-Stock