To serve you better, we remain open 24/7 during the COVID-19 outbreak. Learn More

Benefits of a Two-Stage Furnace

A two-stage furnace offers you  consistent comfort, quiet operation, improved air filtration, and savings on your utility bill.

When you hear someone refer to a furnace as being a single-stage or two-stage furnace, they are talking about the burner section of the furnace. A single-stage furnace has two settings: either on or off. A two-stage furnace has three settings: high, low, or off. On a milder day, a two-stage furnace will operate at the low setting, which uses 65% of the furnace’s full capacity. The high setting (100% capacity) is used on especially cold days to meet the additional heating requirements and provide an even distribution of heat throughout the home.

The benefits of a two-stage furnace include:

Improved comfort

Two-stage furnaces are more responsive to temperature fluctuations outdoors so that you won’t experience any drastic temperature changes in your home. They offer more consistent heating and are accurate enough to maintain temperatures to within one degree of the thermostat setting. The longer heating cycle of a two-stage furnace eliminates the kind of rapid warming that homeowners often find uncomfortable from a single-stage furnace.

Higher air quality

With low-speed operation and a longer, slower cycle, there will always be air passing through your filter allowing it to catch more airborne contaminants. The air in your home will be cleaner because it passes through the air filter more times in a day. Additionally, having a humidifier coupled with a two-stage unit will greatly improve your air quality.


Most of the time, a two-stage furnace operates in the lower capacity stage, thus burning much less fuel than a single-stage furnace which always runs at 100% capacity. Burning less fuel means wasting less energy, resulting in savings on your monthly utility bills.

Quiet operation

These furnaces operate more quietly as they do not switch on and off as frequently throughout the day. Two-stage furnaces never shift into full capacity right away. When the furnace turns on it will initially operate in the first stage while less heat is required, before switching into the high setting if necessary. The two-stage system means that there won’t be any sudden kick or blast of air when the furnace switches on.

Is a two-stage furnace worth it?

If you live in an area that experiences drastic temperature changes or your home has multiple floors and a tendency to have hot and cold spots, a two-stage heating system will give you the comfort that you’re looking for out of a furnace.

The cost difference between purchasing a one-stage or two-stage system is only a few hundred dollars, so it is a good investment for your home if you can afford it. Not to mention that you will be saving some cash on energy bills with this investment.

We hope that you now have a better understanding of the difference between a single and two-stage heating system and are now more prepared to choose your home’s new equipment upgrade. If you have any further questions regarding a two-stage furnace or have any other HVAC concerns, don’t hesitate to contact us at any time. Our highly trained and experienced technicians are more than prepared to assist you with any of your HVAC problems. We provide efficient and quick furnace replacement done by our team of HVAC professionals. We offer a variety of furnace rental, purchasing, and financing options. Give us a call at 1 (855) 998-2998 or fill out our online request form and we will be happy to assist you with your request.

Easy Rentals...

get total piece of mind with our High Efficiency Furnace and Air Conditioner Rental Program.
Customer Rating of 5.0
based on Google reviews

  • Get A Quote Today! Free in-home estimate!
  • This field is for validation purposes and should be left unchanged.

Upgrading to a high-efficiency heating and cooling system offers more than energy savings.

Take advantage of these rebates today!


This item comes with absolutely free standard installation. We’ll ensure that the product is completely installed to code and fully functioning prior to leaving.


Great news! Receive a brand new digital thermostat absolutely free when renting this HVAC product from DeMark Home Ontario.


Great news! When renting a furnace or air conditioner, you’ll get your first 2 months absolutely rent free.


Great news! When renting a furnace and air conditioner together, you’ll get your first 3 months absolutely rent free.


This product carries a manufacturer warranty and we’re happy to explain it in full to you. Feel free to get in touch with us for more information or see the Warranty Information tab for more information


If your order is placed and confirmed by 11am, we can have your HVAC product installed within the same day.

Certain conditions apply, not available on all products.


This water heater is subject to reduced rental rates based on the DHO discount program. Save money on your bill every single month!

Some conditions apply


Save money on this item when buying it along with a qualifying high-efficiency furnace or air conditioner.

Some conditions apply


Great news! When renting a qualifying water heater, you’ll get your first 2 months absolutely rent free.


Promotional code can be found on the eFlyer, Brochure or promotional email that you received from us.

*If you are an existing customer please refer to the mail or email that was sent to you after the installation of your equipment as it contains your promotional code. If you are having troubles locating it please call us and one of our Customer Service Representatives will be happy to assist you.

  • Please fill out the form below in order to schedule service and be sure that your request will be processed promptly and you will hear back from us shortly.

Notice for Power Vent Water Heater Customers

Effective August 2007, gas code requires technicians working on venting to replace black ABS vent pipe with white UL-certified vent pipe.

We will upgrade your venting pipes at no additional cost.

  • Forum Registration

  • Forum Rules

    Registration to this forum is free!
    You must abide by the rules and policies detailed below. If you agree to the terms, please check the 'I agree' checkbox and press the 'Register' button below.

    Although the administrators and moderators of DeMark Home Ontario Forum will attempt to keep all objectionable messages off this forum, it is impossible for us to review all messages. All messages express the views of the author, and DeMark Home is not responsible for the content of any message.

    By agreeing to these rules, you warrant that you will not post any messages that are obscene, vulgar, sexually-oriented, hateful, threatening, or otherwise violative of any laws.

    The owners of DeMark Home Ontario Inc reserve the right to remove, edit, move or close any thread for any reason.



Send this to a friend