Lennox Manuals & User Guides

User manuals, setup guides, troubleshooting help, and repair information for Lennox products.

Tip: include the full model number printed on your Lennox label for the best match.

Lennox manuals

Latest posts, featured manuals, and retailer-linked manuals for this brand tag.

LENNOX E40 Smart Thermostat User Manual

LENNOX E40 Smart Thermostat User Manual

February 1, 2026
LENNOX E40 Smart Thermostat Product Overview The Lennox E40 Smart Thermostat is a Wi‑Fi‑connected smart thermostat designed to control your home heating, cooling, humidity, and other HVAC system functions with advanced scheduling, smart features, and remote access. It integrates with…
Brand: Lennox
LENNOX L5732U Touch Screen Thermostat User Guide

LENNOX L5732U Touch Screen Thermostat User Guide

January 31, 2026
LENNOX L5732U Touch Screen Thermostat USER GUIDE ComfortSense 5000 Series Model No. L5732U 3 Heat / 2 Cool Programmable Touch Screen Thermostat WARNING This thermostat is to be installed by a qualified service technician or other qualified agency in accordance…
Brand: Lennox
LENNOX 508846-01 Hvac Rooftop Electric Heat Units Installation Guide

LENNOX 508846-01 Hvac Rooftop Electric Heat Units Installation Guide

January 30, 2026
LENNOX 508846-01 Hvac Rooftop Electric Heat Units Specifications Product Name: Electric Heat Units Model Number: 508846-01 Manufacture Date: 1/2026 Usage: Electric heaters for SC/SH 092-120 units Shipping and Packing List Electric Heat Package Contains Electric Element/Control Box Assembly Installation Instruction…
Brand: Lennox
LENNOX ML17XP1 Series Heat Pump Instruction Manual

LENNOX ML17XP1 Series Heat Pump Instruction Manual

January 26, 2026
LENNOX ML17XP1 Series Heat Pump WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional HVAC installer or equivalent, or service agency.…
Brand: Lennox
Lennox Dave Lennox Signature Collection XP19 Series Heat Pumps Installation Instructions

Lennox Dave Lennox Signature Collection XP19 Series Heat Pumps Installation Instructions

Installation Instructions • January 31, 2026
Comprehensive installation instructions for the Lennox Dave Lennox Signature Collection XP19 Series Heat Pumps (Model 505.331M), covering unit dimensions, general information, refrigerant handling, installation procedures, electrical connections, start-up, system operations, defrost, maintenance, and troubleshooting. This guide is intended for licensed professionals.
Brand: Lennox
Instructions d'installation ML196UHEK

Instructions d'installation ML196UHEK

Installation Instructions • January 28, 2026
Ce manuel fournit des instructions détaillées pour l'installation du générateur d'air chaud au gaz Lennox ML196UHEK, couvrant les dimensions, la sécurité, les procédures d'installation, le système d'évacuation, la tuyauterie de gaz, les connexions électriques et le dépannagede Lennox.
Brand: Lennox
Lennox E40 Smart Thermostat User Guide

Lennox E40 Smart Thermostat User Guide

User Guide • January 27, 2026
User guide for the Lennox E40 Smart Thermostat. Learn about features like Smart Away, Schedule IQ, Feels Like, Allergen Defender, and smart home integration with Amazon Alexa, Google Assistant, Control4, and Matter. Includes setup, customization, and connectivity instructions.
Brand: Lennox
Lennox S40 Smart Thermostat (Model 22V24) User Manual

Lennox S40 Smart Thermostat (Model 22V24) User Manual

S40 (22V24) • January 20, 2026 • Amazon
This manual provides comprehensive instructions for the Lennox S40 Smart Thermostat (Model 22V24), covering installation, operation, maintenance, and troubleshooting. Learn how to utilize its touchscreen interface, smart features like geo-fencing and scheduling, and integration with advanced accessories for optimal home comfort and…
Brand: Lennox

Lennox video guides

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