Furnace

Lennox EL297 Dual-Stage Gas Furnace

Lennox EL297 70,000 BTU Furnace
from $39.95 or $3,595/mo
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Lennox EL297 90,000 BTU Furnace
from $39.95 or $3,595/mo
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Lennox EL297 110,000 BTU Furnace
from $44.95 or $4,050/mo
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Lennox EL297 135,000 BTU Furnace
from $54.95 or $4,945/mo
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Quiet, Precise Heating for Ontario Winters — Engineered for Ultimate Efficiency 

Looking for a furnace that adapts to your comfort, reduces your energy use, and runs whisper-quiet all winter long? The Lennox EL297 Series is one of the most advanced two-stage gas furnaces in its class. Designed for cold climates like Ontario, this ENERGY STAR® rated model gives you consistent warmth, lower heating bills, and better indoor comfort all season. 

  

If you're asking “Which Lennox furnace balances power, efficiency, and quiet operation?” The EL297 is built for you. 

Why Choose the Lennox EL297 Furnace Series? 

At the heart of the EL297 is two-stage gas valve technology, which allows the furnace to operate at a lower heat output most of the time. This minimizes energy use, reduces noise, and keeps your home at a steady, comfortable temperature. When the outdoor cold hits hard, it ramps up to full capacity to keep you warm — without spikes in your gas bill. 

  

Top features include: 

  

  • Up to 97% AFUE efficiency rating — one of Lennox’s most efficient two-stage models 
  • Two-stage heating for enhanced comfort and energy savings 
  • Variable-speed blower motor for smooth, consistent airflow 
  • Fully insulated cabinet for ultra-quiet performance 
  • iComfort®-enabled design for smart thermostat integration 
  • Secondary stainless-steel heat exchanger for maximum heat recovery and durability 

  

This furnace is built for serious comfort and long-term value — perfect for energy-conscious homeowners who want more from their heating system. 

Choosing the Right Furnace Starts with the Right Info

Perfect for Homes Across Ontario 

The Lennox EL297 is engineered to handle extreme Canadian cold while minimizing energy waste. It’s a strong match for: 

  • Ontario homes upgrading from 80% or single-stage systems 
  • Multi-level or larger homes needing better airflow balance 
  • Families who want better temperature control and lower utility bills 
  • Homeowners pursuing green upgrades or rebate programs 
  • Pairing with Lennox air conditioners or heat pumps for full HVAC integration 

You’ll experience fewer hot and cold spots, quieter operation, and improved air circulation especially during long Ontario winters. 

Maintenance Tips For Your Lennox Furnace

To keep your Lennox EL297 furnace at peak performance: 

  

  • Change filters every 1–3 months 
  • Book annual inspections before winter starts 
  • Keep ducts and vents clean for balanced airflow 
  • Let Go Lime handle your seasonal maintenance for warranty protection 
  • With proper care, your EL297 furnace can last 15–20+ years

Frequently Asked Questions

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Frequently Asked Questions

What makes this furnace quieter than others? 

The EL297 uses a fully insulated cabinet and variable-speed blower that runs longer at lower speeds, reducing operating noise significantly.

Is it energy efficient? 

Yes. With up to 97% AFUE, it’s among the most efficient two-stage furnaces available and eligible for many rebate programs in Ontario.

What is the benefit of variable-speed airflow? 

It keeps temperatures more even throughout your home, improves indoor air quality, and reduces system stress for longer lifespan.

Can I use it with a smart thermostat? 

Absolutely. The EL297 is iComfort®-enabled and works with Lennox’s smart thermostats or most popular third-party brands.

Will it qualify for rebates? 

Yes — many Ontario utility companies and national programs offer rebates for ENERGY STAR® furnaces like the EL297.

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