Innovative Furnaces for Adjala-Tosorontio Are Always a Warm Welcome

When cold weather strikes, you can count on The Heating Source Inc. to keep you perfectly warm at home with our selection of Lennox® furnaces. Serving Adjala-Tosorontio and surrounding areas, when you choose our services, including installations, repairs, maintenances/inspections, and sales, you can be sure that you will receive an outstanding customer experience. Plus, with the Lennox® brand being one of the most efficient heating systems on the market, you can feel good knowing you are saving money on your utility bills. Take advantage of the various rebates available in Ontario by either emailing or calling us today, or you can learn more about these programs by visiting the Ontario Power Authority.

Is it time to change your furnace filter? Remember you should be changing it every 3 months and even more often if you own pets. This will improve the efficiency of your furnace/air conditioner, extending the life of your equipment. While you are at it, change the batteries in your CO detectors and fire alarms (one per floor).

Here are some quick tips for your furnace to run at an optimal level, including:

  • Check and also change your filter regularly
  • Change your thermostat batteries
  • Ensures outside venting is clear of snow and any other debris

Furnace Help When You Need It

The products that we can work on are:

  • Natural gas furnace
  • Propane furnace
  • Hot water heater, including:
    • Storage tank water heater
    • Tankless (on-demand) water heater
  • Heat pumps, including:
    • Ducted heat pump (air source)
    • Ductless (mini-split) heat pump

Reliable, High-performing Furnaces

As an authorized dealer of Lennox® furnaces with high efficiency ratings up to 98.2% AFUE, many are ENERGY STAR® qualified, which translates into significantly lower utility bills, compared to conventional models. Designed to deliver both reliable and economical warmth, a gas furnace can be combined with an electric heat pump in one dual-fuel system optimal comfort and efficiency. We carry the following models, including:


Its stainless steel secondary heat exchanger allows the furnace to reach high efficiency levels by capturing additional heat.

  • Efficiency rating of 93% AFUE 
  • ENERGY STAR® qualified


This model can save you 100’s of dollars each year compared to standard furnaces, as well in continuous fan mode, this furnace helps keep energy waste at a minimum.

  • Efficiency rating of 95% AFUE
  • Power Saver™ constant torque
  • Helps maintain consistent air flow
  • Energy boost capabilities improves the overall system efficiency
  • Delivers higher SEER ratings in cooling mode
  • Sealed blower compartment
  • Minimizes losses and maximizes efficiency and comfort
  • Dual-fuel capability


Having dual-fuel capability means that it can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use, and minimizing heating costs.

  • Efficiency rating of 96% AFUE
  • ENERGY STAR® qualified 
  • Dual-fuel capability 
  • Variable speed blower motor 
  • Robust stainless steel secondary heat exchanger 
  • iComfort Wi-Fi® enabled technology


  • Efficiency rating of up to 98.2% AFUE
  • ENERGY STAR® qualified
  • Variable-speed motor
  • SilentComfort™ technology
  • Dual-fuel capability 
  • Up to 7 times quieter than competitive models
  • Precise Comfort® technology
  • Self-calibrating variable speed inducer

Smart, Flexible Mini-split Systems Solutions

We carry the following Lennox® models of mini-split systems, such as:

  • MBP mini-split heat pump: efficient heating and cooling ideal for add-on spaces
  • MLA mini-split heat pump: outstanding cold-climate capabilities

Take Advantage of Heating Incentives

With up to 60% of an average home’s energy use going towards heating costs, it makes sense to consider the energy-efficiency of your furnace and central air conditioning units. You can receive some incentives with certain participating programs, contact us for more information, or you may visit Save on Energy and Green Ontario Fund websites.

Frequently Asked Questions on Gas Furnaces

Running into HVAC Problems?

If you've lost your heat or your AC unit is broken, rely on our prompt service

The Heating Source Inc.

7927 30th Sideroad Adjala

Alliston, ON L9R 1V1


Monday - Friday 10:00 AM - 05:00 PM

Saturday 10:00 AM - 02:00 PM

Sunday Closed

Statutory Holidays: Closed

Service Area

  • Adjala-Tosorontio
  • Alliston
  • Beeton
  • Cookstown
  • Dufferin County
  • Innisfil 
  • New Tecumseth
  • Schomberg
  • South Simcoe County
  • Tottenham

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