HVAC Start and Run Capacitor Explained and Replacement

Capacitors are used in HVAC to help electrical motors to start and keep running smoothly. They are low-cost components that come in multiple packages, shapes, and sizes. What are Start Run Capacitors? A Start capacitor helps a motor start to turn, while a Run capacitor helps it to operate more smoothly. Motors used in HVAC,… Read More »

How To Read an HVAC Temperature Pressure Chart

An HVAC unit needs the correct pressures to operate and cool a space. If the refrigerant is too low or high, the unit will not operate and cause problems such as freezing up or other issues. Pressure changes as the temperature changes, so a pressure temperature chart is used as a reference to get the… Read More »

How Does a Furnace Gas Draft Inducer Work?

A furnace combustion chamber burns gas and contains harmful carbon dioxide as a byproduct. The furnace draft inducer vents the toxic gasses that come from the burner. An inducer motor ensures there is a constant flow of air outside through a vent, so no toxic gasses enter a home. A draft inducer pulls toxic gasses… Read More »

Test and Replace the Fan Limit Switch on a Furnace

What is a Fan Limit Switch? A furnace has two switches, a fan limit switch and a high limit switch; these switches can be separate or in one package called a combination switch. High limit switch A high limit control switch will turn off the gas to a furnace if the temperature becomes too high.… Read More »

Mobile Home Furnace Overview and Buyers Guide

Table of contents Types of Mobile Home Furnaces Standard Furnace vs. Mobile Home Furnace Components of a Mobile Home Furnace and Air Conditioning 80% vs. 90% Furnaces Sizing a Mobile Home Furnace Climates Ton vs. BTUs Sizing Chart for Mobile Home Furnace Updraft vs. Down Draft Furnace Mobile Home Furnace Prices How Much Will it… Read More »

Cost to Replace a Furnace Motherboard Control Board

If your furnace needs a new control board, the average cost for an HVAC technician to install it is $400-$700. If you are a DIY type of person, furnace control boards can be bought online for $50-$250, depending on the furnace. Can I Replace My Own Furnace Circuit Board? Doing it yourself is very tempting… Read More »

What Does a CEER Rating on an Air Conditioner Mean

A CEER (Combined Energy Efficiency Ratio) rating is a new standard for room and window air conditioners that rates how efficiently they operate. The DOE (Department of Energy) created the new standard for Window AC units in 2011 and implemented it in June 2014, and it has become the main way to see how efficient… Read More »