The majority of homes in Brampton use single-stage furnaces. This is the most common furnace in homes. But did you know many benefits come with using a multi-stage furnace? If you are thinking of installing a new furnace, you need to consider getting a multi-stage or even a true modulating furnace. Keep reading to find out why.
Furnaces that have a multi-stage operation are equipped with a gas valve. The work of the valve is to regulate the amount of gas that flows to the burner and heat exchanger. This is different from a single-stage furnace, where gas flows at 100% when the furnace is switched on.
A 2-stage operation furnace is equipped with a furnace. When switched on, the furnace starts heating at a lower heating stage. In most cases, this stage is usually 60% of gas flow. If the desired temperatures are not achieved within 10 to 16 minutes, the regulator will open to 100% to allow more gas to flow. This concept is the same in 3-stage operation furnaces. The only difference is that the valve has three settings: 40%, 60%, and 100%. When switched on, the gas flow starts at 40% and keeps increasing to 100% if the desired temperatures are not achieved within 10 to 16 minutes. A 3-stage furnace is, however, not a true modulating furnace.
With true modulating furnaces, the settings are more than 40 or even 50. The valve has smaller opening increments, typically from 30% all the way to 100%. A perfect example of a true modulating furnace is the Carrier’s INFINITY 98. The furnace is also the only one you will find that can modulate down.
To give you a better understanding of all three furnace options, we have to discuss an example. Let’s say you have a single-stage furnace and the temperature in the room is 20C. If you want to increase the temperature to just 21C, you will need to adjust the thermostat, and the furnace will switch on. The valve in the single-stage furnace will open at 100% to increase the temperatures by 1C. Because heat is produced at a high rate, the room will start getting hot, and by the time the furnace is switching off, the thermostat will be reading 23C. The temperatures will then begin dropping until they hit 21C. When they fall below 21C, the furnace will kick in again, and the cycle will continue.
The main issue with this type of operation is the significant temperature fluctuations due to the lack of control. You have definitely noticed this issue if you have been using a single-stage furnace.
The issue can be corrected with a multi-stage furnace which increases the temperatures gradually. Multi-stage furnaces allow you to increase the temperatures at a gradual rate. This is because the more heating stages your furnace has, the better control it will give you.
With that in mind, let’s take a look at the two main benefits of using a multi-stage furnace:
- Better temperature control: The temperatures increase gradually, thus eliminating the issue of temperature fluctuations.
- The furnace is quieter than a single-stage furnace: This is all because the furnace doesn’t run at full capacity when only a few degrees of temperature need to be increased. A lower gas flow rate has always been associated with a lower sound because high gas flow leads to increased pressure, leading to more vibrations that cause more noise.
Ask us about the innovative technology used in the Carrier multi-stage furnace. This technology is known as adaptive logic and guarantees tighter temperature control.
Misconception About the Number of Heating Stages and Energy Saving
Having more heating stages does not mean that a furnace uses less gas to heat the room. Heating stages don’t affect the efficiency of a furnace either. The same amount of energy will be required to heat the house. The only difference is that a single-stage furnace burns more gas within a shorter period than a multi-stage one. This means that the furnace will use the same amount of natural gas at the end of the day to achieve the desired temperatures.