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Lennox

OEM Lennox Taco Zone Valve 1" Sweat 24VAC Coil 22VA — Y4143

SKU: LNX-Y4143 Brand: Lennox
$249.95 $349.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The Lennox Y4143 is a genuine OEM Taco zone valve featuring a 1-inch sweat connection and a 24VAC coil with a 22VA draw, designed for use in Lennox hydronic heating and zoned HVAC systems. This valve opens and closes to direct hot water flow to specific zones, allowing for precise temperature control throughout a building. Symptoms of a failing zone valve coil include zones that won't heat, a valve that stays open or closed regardless of thermostat signals, or a coil that runs hot to the touch — all issues that this direct OEM replacement resolves.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $75
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Coil fit my Lennox OEM Lennox Taco Zone Valve 1" Sweat 24VAC Coil 22VA — Y4143?
Yes. This is the factory-specified OEM coil for the Lennox OEM Lennox Taco Zone Valve 1" Sweat 24VAC Coil 22VA — Y4143. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the coil on my Lennox OEM Lennox Taco Zone Valve 1" Sweat 24VAC Coil 22VA — Y4143?
Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.
What symptoms mean I need a new coil?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this coil compatible with Bryant or Payne too?
Many Lennox parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Lennox coil?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
HVAC Parts Specialist — Online