Protect Your HVAC System
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Protect Your HVAC System

As soon as I purchased my first home, I realized that it was going to be difficult to take care of all of the appliances. I was worried that some components would fail or that others would simply suffer from neglect. Unfortunately, I had no idea what to do in order to avoid these types of problems. To ward off my worries, I decided to hire a professional HVAC contractor who could help. I was able to find an incredible business in my area who really cared about their products and services. They taught me how to look for problems and how to troubleshoot a lagging system. Check out this blog for more information about protecting your HVAC system.


Protect Your HVAC System

What's The Difference Between A Single-Stage Furnace And A Modulating Furnace?

Ricardo Sanchez

Choosing a brand-new furnace often means being confronted by a vast array of choices. Not only do you have to choose how your furnace is powered (via electricity, natural gas or heating oil, for example), but you'll also have the option to choose between a single-stage furnace and a modulating furnace. The following explains the differences between these two types of furnaces and what you can expect from both.

Single-Stage Furnace

Single-stage furnaces are typically equipped with gas valves with a rather binary operation - they're either open or closed. These furnaces are also equipped with blower motors that operate at a single speed, which means there only capable of operating at full tilt when turned on.

When it comes to heating, it's all or nothing for a typical single-stage furnace. It's not unusual for these furnaces to start up and shut down constantly in an effort to maintain a specific temperature. This often results in short cycling as well as increased energy consumption and parts wear. You may need to hire a company that offers furnace and heat pump services to come look the system over more often.

Modulating Furnace

At the heart of a modulating furnace is a gas valve with provisions for multiple staging. This means the gas valve can deliver as much or as little fuel as it needs to according to current heating needs. Most modulating furnaces also feature a blower motor capable of operating at multiple speeds. Thanks to these variable-speed blower motors, a modulating furnace can easily adjust its airflow to meet specific heating demands.

As a result, a modulating furnace can operate at very low fan speeds to provide more even, consistent heat throughout your entire home. Modulating furnaces also tend to consume very little fuel during low-speed operation, which could help you save hundreds of dollars on your annual utility bills.

Which Works Best?

Modulating furnaces obviously have the upper hand when it comes to overall efficiency and performance. These furnaces also offer better long-term value thanks to their lower energy requirements. However, these furnaces tend to be a bit more expensive than their single-stage counterparts. If you're looking for the most efficient furnace for your home, a modulating furnace is the best choice.

Single-stage furnaces do have one distinct advantage over their modulating counterparts: they usually have a lower price tag, making them easier for homeowners on a tight budget to purchase. If your budget is the most important consideration when shopping for a new furnace, a single-stage furnace may be the way to go.