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A furnace is an integral part of creating a comfortable environment within your home. Without it, you may find it difficult to maintain a suitable temperature, especially as the winter chill sets in and cool weather becomes the norm.

If your home’s heating and air system is becoming a concern for you and your family, it may be time to consider replacing it and upgrading to a more modern unit. You’ll need to decide between a single stage, two stage or variable stage furnace.

Here are a few points to consider:

Single Stage Furnace

In a single stage furnace, the furnace operates on high whenever it runs and shuts off when your home’s indoor temperature matches the setting on the thermostat. These are best used to heat your home during the coldest days of the year, due to the fact that they run at full capacity whenever they are in operation, regardless of the temperature outside.

A single stage furnace has both pros and cons that should be taken into consideration. The positives include having lower installation and repair costs, that will help ease the initial cost of replacement and will allow you to maintain the system less expensively. The negatives include the fact that single stage furnaces normally operate louder than others, cause larger swings in temperature and use more fuel than other systems. This can lead to a higher fuel consumption and increased energy bills.

Two Stage Furnace

A two stage furnace differs from a single stage furnace in that it can operate at both a high and a low stage of heating. Adjusting the output of the furnace is based on the amount of heat needed indoors. Since its first stage normally runs at about 65% capacity, the two stage furnace can offer some significant energy savings and a quieter operation.

There are pros and cons to the two stage system as well. The pros include less fuel consumption and lower energy bills, along with quieter operation and minimal temperature swings. As to the cons, two stage systems can come with higher installation costs and the repair costs that can accumulate over time.

Variable Speed Furnace

Another option to consider is the variable speed furnace. It differs from both the single stage furnace and the two stage furnace by adjusting the output speed of the furnace’s blower motor based on the heating demands of your home. This allows for consistent heat output and also continually circulates air throughout your home, resulting in cleaner air and a more comfortable living environment.

Variable speed furnaces are also not without their pros and cons. The pros include the fact that they consume less fuel and can contribute to lower energy bills while increasing the air quality and indoor comfort of your home. Additionally, they have a longer system life than others and operate more quietly than other systems. Unfortunately, they can have a higher installation cost than other units and the repair costs can become expensive over time.

To learn more about the various furnace systems available and which one is right for your home, contact our offices in San Jose, CA. We specialize in heating and air systems along with furnace repair and are certain we have the right solution for your needs.