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All appliances have a model number and a serial number tag located on the appliance. Generally they are available for the customer to find quickly. If you are unable to locate your tag, please see your original manual and or invoice from when you purchased the appliance.

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Siemens

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599-02041 Siemens Building Technology 1/2"2Way N/O 4Cv Eq% Vlv Bdy

$66.70 USD

In Stock

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256-02041A Siemens Building Technology 1/2" 2Way No 10-15# Fxf

$146.50 USD

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274-03168 Siemens Building Technology 1 1/4"N/O .0-10 S/R Cv16

$1,029.45 USD

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540-984 Siemens Building Technology Flush Mnt Snsr 10K Ohm Metal

$17.89 USD

Limited Stock Available

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ASE1 Siemens Building Technology Mx.461 Repairmodule 3/4"-1.25"

$589.60 USD

Limited Stock Available

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259-02041 Siemens Building Technology 1/2" 2-Way N/O 4.0Cv W/Ssc81U

$165.69 USD

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QAA2212.FWNN Siemens Building Technology 1Kohm Plat Rtd 385Alpha Sensor

$127.96 USD

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QMX3.P74-1WNB Siemens Building Technology Room Operator W/Sensors

$496.92 USD

Limited Stock Available

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599-03170 Siemens Building Technology 2"N/O Vlv Body 40Cv

$458.88 USD

Limited Stock Available

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TXM1.8X-ML Siemens Ddc Universal Module, New

$826.64 USD

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373-03204 Siemens Building Technology 3W Mix Fxf 1 1/4" 16.0 24V Nsr

$722.17 USD

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243-00212 Siemens Building Technology 3/4" 2-Way 24V 4.1Cv Valve

$123.01 USD

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268-03168 Siemens Building Technology 1.25"N/O 3/8# Vlv Assy

$417.99 USD

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268-03170 Siemens Building Technology 2" No 3-8# 4"Act Cv40 Bronze

$659.54 USD

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MXG461.32-12U Siemens Building Technology 1.25" 14Cv Modmagneticctrvlv

$1,523.85 USD

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PXC24.2-PEF32.A Siemens Pxc Compact 24Pt Ddc Board Ref

$1,504.21 USD

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Heating Cooling Parts

2023 W Fullerton Ave

Chicago, IL 60647

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©2026 HeatingCoolingParts dba of Midwest Appliance Parts Co. Inc
This site is not affiliated with or endorsed by any of the original manufacturers listed.
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This product must be installed by a qualified/licensed contractor and set up with properly calibrated combustion test equipment. Failure to comply with this could result in substantial property damage, severe personal injury or death.

I acknowledge this product must be installed by a qualified licensed contractor

Oversize and Heavy Item Shipping Fee

The item you are purchasing is either packaged in a very large box or is very heavy. These items tend to require special shipping and handling.

Here's how it works:

Order the new part from our website and pay for this shipping fee.

For large items such as washer tubs, and baskets, we may use a freight company to deliver the item to you. We will contact you with more information on such orders especially to schedule a delivery with the freight company. Very rarely do we ship these items with UPS or Fedex because they have size limitations on what the drivers can carry. Please pay close attention to your tracking # provided at the time of shipping.

For HEAVY items such as compressors and motors, we may use a freight company to deliver the item to you. We will contact you with more information on such orders especially to schedule a delivery with the freight company. Very rarely do we ship these items with UPS or Fedex because they have weight limitations on what the drivers can carry. Please pay close attention to your tracking # provided at the time of shipping.

If you have any questions please reach our parts specialists at 773-278-1300.

Find The Right Part. Right Now!
Heating Cooling Parts

Refundable Deposit (Core Refund) Information

The item you are purchasing has a deposit due at checkout. This is completely refundable when you return your “core” or “old part” back to us.

Here's how it works:

Order the new part from our website.
Print out your order confirmation along with our Core Return Form located on our website. Please include both with your core return. Download Core Fee Return Form
Mail the item back to our Chicago branch at this address: Heating Cooling Parts 2023 W Fullerton Ave Chicago IL 60647.
We will refund your credit card for the amount shown on your original invoice.

If you have any questions please reach our parts specialists at 773-278-1300.

Find The Right Part. Right Now!
Heating Cooling Parts