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Lennox S40 | 22V24 | Smart Touchscreen Thermostat | 3H/2C Wi-Fi

Lennox S40 | 22V24 | Smart Touchscreen Thermostat | 3H/2C Wi-Fi

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Regular price $650.00 USD
Regular price Sale price $650.00 USD
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Lennox S40 Smart Control Troubleshooting & Reliability

  • Communicating Precision: Fixes communication errors common in older 15X98 models.

  • Wi-Fi Connectivity: Resolves remote access drops with upgraded dual-band antenna.

  • OEM Reliability: Genuine Lennox part ensures 100% uptime for variable-speed motors.

  • Energy Efficiency: Smart Away technology reduces monthly utility costs by up to 20%.

  • System Safety: Advanced diagnostics prevent furnace overheating and AC coil freezing.

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Specifications

Product Details and Key Specifications:

  • Part Number: 22V24 (Model S40)
  • Manufacturer: Lennox (Genuine OEM)
  • Part Type: Communicating Smart Thermostat
  • Voltage: 24VAC
  • Stages: Universal 3 Heat / 2 Cool (Communicating or Conventional)
  • Connectivity: Wi-Fi / Bluetooth / Apple HomeKit / Alexa
  • Rotation/Orientation: Horizontal Wall Mount
  • Shipping Weight: 1.2 lbs

description

Lennox Communicating Systems & Smart Control

The Lennox S40 Smart Thermostat (Cat # 22V24) is the premium command center for high-performance Lennox communicating HVAC systems. Unlike standard thermostats, the S40 acts as a diagnostic hub that automatically configures connected Lennox equipment for peak efficiency. It is designed to manage temperature, humidity, and indoor air quality through a single, high-definition interface, ensuring the safest and most efficient operation of your home's climate system.

Technical Performance & OEM Reliability

Operating on a 24V digital communication bus, this genuine OEM Lennox control provides precision that universal retail models cannot replicate. Being a "Genuine OEM" part ensures zero vibration in the digital signal, perfect electrical compatibility with inverter-driven systems, and a precision fit on the wall plate. With built-in Wi-Fi and a 7-inch HD color touchscreen, it delivers real-time system health monitoring and remote access without the risk of software lag or hardware mismatch.

Key Features and Function:

  • Precision Communicating Control: Automatically detects and optimizes Lennox variable-capacity equipment for maximum energy savings.
  • Genuine OEM Reliability: Engineered specifically for Lennox RSBus systems to ensure seamless data flow and zero communication errors.
  • Advanced Safety Integration: Monitors system sensors in real-time to provide maintenance alerts and safety shut-offs before major failures occur.
  • Plug-and-Play Smart Hub: Direct-fit design that integrates with Smart Room Sensors and the Lennox PureAir S air purification system.

Product Details and Key Specifications:

  • Part Number: 22V24 (Model S40)
  • Manufacturer: Lennox (Genuine OEM)
  • Part Type: Communicating Smart Thermostat
  • Voltage: 24VAC
  • Stages: Universal 3 Heat / 2 Cool (Communicating or Conventional)
  • Connectivity: Wi-Fi / Bluetooth / Apple HomeKit / Alexa
  • Rotation/Orientation: Horizontal Wall Mount
  • Shipping Weight: 1.2 lbs

🛠️ HVAC DEPOT PRO TIP: The Shielded Signal Check

When installing the S40 on a high-efficiency communicating system, always verify you are using 18-gauge shielded thermostat wire. Stray electrical interference from high-voltage lines can cause "lost communication" errors; using shielded wire and grounding the drain wire at the indoor unit ensures a clean, stable signal to the S40 touchscreen.

Cross-Reference:

  • Superseded Part: 15X98
  • Legacy Model: iComfort S30
  • Catalog Number: 22V24
  • Drawing Number: 106316-01

Model Compatibility:

SLP99V, SL280V, EL296V, EL196E, CBA38MV, CBX40UHV, CBX32MV, XP25, XC25, XP20, XC20, EL18XPV, SL25XPV, SL18XC1, EL17XC1. (Note: Conventional non-communicating units require the 22X18 Equipment Interface Module).

Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

At HVAC Parts & Equipment Depot, customer satisfaction is important to us. This Refund & Return Policy explains how returns, exchanges, and refunds are handled for purchases made through TopHVACParts.com.

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

  • The item must be unused, uninstalled, and in its original condition.
  • The item must be returned in its original packaging.
  • Model numbers and serial numbers must match the original purchase records.
  • Proof of purchase or order confirmation is required.

Non-Returnable Items

The following items are not eligible for return or refund:

  • Installed or used parts.
  • Products showing signs of installation, modification, or damage caused after delivery.
  • Items missing original packaging.
  • Sale or clearance items.
  • Special-order or custom-order products.
  • Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

  • Refunds will be issued to the original payment method.
  • Processing typically takes 7–14 business days after approval.
  • Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

  • Our shipping error,
  • A defective product,
  • A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Michel & Siso are very knowledgeable and explain everything to where I could understand! Amazing experience! Thank you will always come here for any AC needs. Trustworthy and excellent customer service.

Celest G.
Verified Customer
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