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 VMDD-S6-5P Varix VRF Heat Pump User Manual

March 4, 2026
LENNOX VMDD-S6-5P Varix VRF Heat Pump Safety Information Before using your new air conditioner, please read this manual thoroughly to ensure that you know how to operate the extensive features and functions of your new appliance safely and efficiently. Because…

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…

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…

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…

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.…

Lennox ML14KP1 Heat Pump Installation Instructions

installation instructions • March 4, 2026
Comprehensive installation guide for the Lennox ML14KP1 Heat Pump, covering unit placement, refrigerant piping, electrical connections, start-up procedures, and safety precautions. Essential reading for HVAC professionals.

Guide de l'utilisateur du thermostat intelligent E40 de Lennox®

User Manual • March 3, 2026
Découvrez le thermostat intelligent E40 de Lennox®, une solution avancée pour le contrôle de la température de votre domicile. Conçu pour offrir un confort exceptionnel et des économies d'énergie significatives, ce thermostat intelligent s'intègre parfaitement à votre vie moderne.

Lennox Energy Recovery System Installation Instructions P62A-48LDW

Installation Instructions • March 1, 2026
This document provides comprehensive installation instructions for the Lennox P62A-48LDW Energy Recovery System (ERS), designed for use with Landmark and XION 156-300 units. It covers principles of operation, shipping and packing, installation procedures, system checks, maintenance, wiring diagrams, and startup information.

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…