The four most common types of furnaces in use today are Single Stage, Two Stage, Variable and Combination Water Heater / Furnaces.
Single Stage Furnaces
A single stage furnace is either in the on or off position. When the indoor temperature drops to a certain level the system turns on and sends a blast of warm air into the home until a desired temperature is reached. A thermostat automatically controls these systems.
The advantage of a Single Stage furnace is its low initial price. The disadvantage is that they are the least energy efficient furnace systems.
Two Stage or Dual Stage Furnaces
This system adds an extra flame over the Single Stage furnace. This system has three positions: on/low, on/high and off. These extra settings make the furnace more efficient and therefore help to reduce energy costs.
Modulating or Variable Furnaces
A variable furnace’s motor moves at different speeds to precisely control the flow of heated air through your home. Because the system runs at a wide range of speeds and gradually ramps up to full power it eliminates the sudden noisy blast of air associated with standard furnaces.
The Variable Furnace offers the most energy efficient system but the initial investment price is also higher.
The combination furnace provides both home air heating and water heating in one compact unit. They offer great efficiency, are easy to install and leave a small footprint.
Book a consultation with one of our furnace experts to see if a combination water heater furnace could be the right solution for your home heating needs.