Older furnaces are drastically more inefficient compared to their modern conterparts. Climate Works offers furnace models that are nearly 99% efficient, while older furnaces are 50-80% efficient.
The trend has been to replace these inefficient furnaces with condensing gas furnaces. The most efficient furnaces in the industry, Lennox condensing gas furnaces, reach AFUE efficiency ratings over 98% and can save up to 25% of your electricity bill too!
Fortunately, newer variable speed ECM blowers in many new furnaces can move air more efficiently at a fraction of the cost. Savings are most often $300.00 to as much as $500.00 per year! This is becoming even more significant with rising power costs and the HST tax on energy bills.