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Lennox

OEM Lennox Gas Valve Kit for DKVLT-100 Condensing Boiler — Y5356

SKU: LNX-Y5356 Brand: Lennox
$169.95 $229.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The genuine OEM Lennox Y5356 gas valve kit is made specifically for the DKVLT-100 wall-mounted condensing gas boiler. This valve meters and modulates gas flow to the burner, adjusting fuel delivery to meet heating load while ensuring safe, efficient combustion. It coordinates with the boiler's ignition system and control board to provide reliable, on-demand heat throughout the firing range.

When this gas valve starts to fail, you may experience ignition failure, short-cycling, fluctuating water temperatures, delayed or rough ignition, or a full no-heat condition. The control board often logs ignition-lockout fault codes when it senses incorrect gas flow. Any of these signs calls for timely replacement to keep the system running safely.

Choosing an OEM Lennox Y5356 valve ensures a precise factory fit, proper gas pressure calibration, and complete compatibility with the DKVLT-100's control logic. Aftermarket valves can introduce improper flow rates, combustion concerns, and reduced service life. This OEM kit preserves your boiler's rated efficiency and warranty protection.

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 Gas Valve fit my Lennox DKVLT-100 Condensing Boiler — Y5356?
Yes. This is the factory-specified OEM gas valve for the Lennox DKVLT-100 Condensing Boiler — Y5356. 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 gas valve on my Lennox DKVLT-100 Condensing Boiler — Y5356?
Requires licensed HVAC technician. Gas valve work involves gas lines that must meet local building codes. Improper installation risks dangerous gas leaks. Buy the part yourself to save 40–60% on markup, then have your technician install it.
What symptoms mean I need a new gas valve?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this gas valve 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 gas valve?
Always use OEM. Gas valves must match exact pressure ratings, port configurations, and safety certifications. Non-OEM gas valves can create safety hazards and may violate building codes.
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