7 things you should know about high-efficiency gas furnaces

- Most high-efficiency furnaces (over 90% AFUE) are condensing. This means that they can extract additional heat from water vapor that would normally be wasted up your flue. That’s what makes them so efficient.
- HVAC costs make up about half of your utility bill expenses. This means that if you can see savings here, you can see BIG savings overall.
- Some high-efficiency furnaces are nearly 100% efficient. This means that nearly all of the energy that goes into your gas furnace is returned in heating power.
- AFUE (or annual fuel utilization efficiency) is the standard measurement of efficiency of gas furnaces. The higher the AFUE percentage, the more efficient the unit.
- Minimum efficiency standards have been raised dramatically over the past 10 years. That means that the old furnace in your basement could be upwards of 10% less efficient that even standard-efficiency units today.
- Standard furnaces, as part of a split-system, aren’t the only way you can enjoy gas furnace heating power. Gas packs and packaged dual-fuel systems, can also contain all of the components of a high-efficiency gas furnace.
- Natural gas furnaces are often more efficient than other furnaces (like oil and electric). That’s because natural gas tends to be the cheaper utility in most areas.