Venting a High-Efficiency Furnace Through an Exterior Wall

High-efficiency furnaces (90% AFUE and above) are common in U.S. homes and typically use direct-venting with PVC or CPVC through an exterior wall. Proper wall venting ensures safe combustion air intake, effective exhaust of combustion gases and condensate management, and compliance with local codes. This article covers materials, clearances, installation best practices, condensate handling, troubleshooting, … Read more

How Much Does It Cost to Convert an Oil Furnace to Natural Gas

Converting an oil furnace to a natural gas system involves several cost factors, permitting, and trade-offs in efficiency and maintenance. This article breaks down typical price ranges, the steps involved, financing options, and tips to reduce overall conversion cost while highlighting the key considerations homeowners should weigh when planning a conversion. Item Typical Cost Range … Read more

How to Determine the Age of a Lennox Furnace

The age of a Lennox furnace matters for safety, efficiency, repair decisions and resale value. This article explains where to find the model and serial numbers, how to decode Lennox serial formats, provides example decodings, and offers guidance on what the age implies for maintenance or replacement decisions. Readers Will Learn how to determine manufacture … Read more

Amana Gas Furnace Reviews: Performance, Models, and Buying Guide

Amana gas furnace reviews evaluate efficiency, reliability, noise, and warranty to help homeowners choose the right heating system. This article summarizes key features across popular Amana models, compares performance metrics, and provides practical guidance on installation, maintenance, and cost expectations. Model AFUE Stages Key Feature AMVC95 95% Two-Stage Variable-speed blower, quiet operation AMVC80 80% Single-Stage … Read more

Signs of a Clogged Furnace Filter and How to Fix Them

The furnace filter plays a vital role in home comfort and indoor air quality. When a filter becomes clogged, the furnace struggles to perform efficiently, which can lead to uneven heating, higher energy bills, and potential system damage. This article explains the most common signs of a clogged furnace filter, why they matter, and practical … Read more

How to Tell if Your Furnace Flame Sensor Is Bad

The flame sensor is a small but critical safety device in a gas furnace. This article explains how to recognize a failing flame sensor, steps to test and clean it, when to replace it, and how to avoid future problems. Readers will gain practical troubleshooting methods and safety considerations to help decide whether to DIY … Read more

York Furnace Model Number Lookup Guide

Locating and decoding a York furnace model number helps homeowners and technicians identify parts, verify compatibility, and determine unit age and specifications. This guide explains where to find the label, how to interpret model and serial numbers, reliable online lookup methods, and practical tips for sourcing manuals and replacement parts. Task Quick Action Find Model/Serial … Read more

Goodman Furnace Pressure Switch Stuck Closed: Troubleshooting and Fixes

The pressure switch in a Goodman furnace ensures safe operation by verifying the inducer motor’s venting before ignition. When the Goodman furnace pressure switch is stuck closed, the furnace may short-cycle, fail to ignite, or operate unsafely. This article explains causes, diagnostic steps, repairs, cost considerations, and preventive maintenance to restore reliable operation. Symptom Likely … Read more

Goodman Furnace Serial Number Lookup Guide

The following guide explains how to find, read, and use a Goodman furnace serial number to determine manufacture date, verify warranty status, identify compatible parts, and seek manufacturer support. It includes practical steps, common serial formats, online lookup options, and tips to avoid errors when decoding numbers and contacting support. Purpose Action Where To Go … Read more

Common Gas Furnace Problems and How to Diagnose Them

Gas furnaces are essential for many U.S. homes, but they can develop faults that reduce comfort, safety, and efficiency. This article outlines the most common gas furnace problems, explains typical causes, and describes practical diagnostic steps and basic fixes a homeowner or technician can use. It emphasizes safety and when to call a professional for … Read more