Furnaces Manuals & User Guides

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

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

Furnaces manuals

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

YORK Y91E Gas Furnaces Instructions

May 16, 2026
YORK Y91E Gas Furnaces Higher efficiency in one smart design The YORK® Y91E Single-Stage, Condensing Gas Furnace is the perfect marriage of high efficiency and intuitive design for easy and fast installation or servicing. With an AFUE rating of 96%…

LENNOX SL280UHNV Gas Furnaces Instruction Manual

May 7, 2026
LENNOX SL280UHNV Gas Furnaces LENNOX S40 SMART THERMOSTAT MODEL NUMBER IDENTIFICATION FEATURE HIGHLIGHTS Heat Exchanger Assembly Burner Orifice/Air Intake Assembly Sure Light® Hot Surface Ignitor Modulating Gas Control Valve Variable-Speed Combustion Air Inducer Thermal Switch Variable Speed Direct Drive Blower…

LENNOX EL297DFV070 Elite Gas Furnaces Instruction Manual

December 28, 2025
LENNOX EL297DFV070 Elite Gas Furnaces MODEL NUMBER IDENTIFICATION FEATURE HIGHLIGHTS Lennox Duralok Plus™ Heat Exchanger Secondary Heat Exchanger Inshot Burners Two-Stage Gas Control Valve Two-Speed Combustion Air Inducer SureLight® Integrated Furnace Control Variable Speed Direct Drive Blower Insulated Cabinet Safety…

LENNOX ELITE Series Gas Furnaces Installation Guide

November 23, 2025
LENNOX ELITE Series Gas Furnaces Specifications AFUE: 97% Input: 44,000 to 110,000 Btuh Nominal Add-on Cooling: 2 to 5 Tons Product Usage Instructions Features Overview The EL297DFV(K) gas furnace is a two-stage heating system with a variable speed blower and refrigerant…

FURRION FFG Series RV Furnaces Instruction Manual

November 5, 2025
FURRION FFG Series RV Furnaces Specifications Model Numbers: FFG20FA (LIPPERT PN: 2023033712) FFG30FA (LIPPERT PN: 2022121947) FFG35FA (LIPPERT PN: 2022121948) FFG20RA (LIPPERT PN: 2023033713) FFG30RA (LIPPERT PN: 2022121949) FFG35RA (LIPPERT PN: 20221219509) Introduction This document provides an overview on replaceable…

FURRION FFG2 Series RV Furnaces Instruction Manual

November 4, 2025
FURRION FFG2 Series RV Furnaces MODEL RV FURNACES MODEL (LIPPERT PN) FFG20FA (2023033712) FFG30FA (2022121947) FFG35FA (2022121948) FFG20RA (2023033713) FFG30RA (2022121949) FFG35RA (20221219509) This manual contains the product's basic information, safety, maintenance, replaceable parts, fault diagnosis and basic troubleshooting procedures.…

LENNOX ML193UHE(K) Gas Furnaces Owner’s Manual

October 13, 2025
LENNOX ML193UHE(K) Gas Furnaces Product Specifications AFUE: 93% Input: 30,000 to 110,000 Btuh Nominal Add-on Cooling: 3 to 5 Tons Features Overview The Gas Furnace ML193UHE(K) is designed for residential use and comes with the following features: Upflow/Horizontal Configuration Constant…

Rheem R801V Endeavor Gas Furnaces Instruction Manual

May 3, 2025
Rheem R801V Endeavor Gas Furnaces Features and Benefits PlusOne® Diagnostics: With the Rheem Contractor & EcoNet® Apps, built-in EcoNet® & Bluetooth® technology makes monitoring, troubleshooting and repairing the product easier than ever before Dip Switch Free Installation Commissioning via Bluetooth®…

LENNOX ML Series Gas Furnaces User Manual

April 23, 2025
LENNOX ML Series Gas Furnaces User Manual PLEASE READ DISPUTE RESOLUTION SECTION CAREFULLY, AS IT AFFECTS YOUR LEGAL RIGHTS Failure to maintain equipment will void this Basic Limited Warranty. BASIC LIMITED WARRANTY (Residential Applications only) Subject to the terms herein,…