How Efficient is Your Furnace?

By jairadmin
In November 1, 2018

Tis’ the season to fire up the furnace and spend for the holidays. Without knowing the basics of heating efficiency, homeowners are at risk for unnecessary (and expensive) energy costs and HVAC hazards.

The Standard of Heating Efficiency

If a problem is preventing your furnace from operating at an 80% annual fuel use efficiency (AFUE) rating, then your furnace could be at serious risk. But what does that mean? The standard AFUE refers to the percentage of energy consumed by the unit that is used to heat your home.

All sorts of issues can prevent a furnace from running efficiently.


The oxide required for older furnaces is known to destroy valves, cause gaskets to leak and bearings to go dry, inevitably creating more risk of malfunctioning parts or total system breakdown. The older a furnace is, the more likely its parts will malfunction, causing repairs to become gradually more expensive. Older furnaces also require more gas to create heat. Replacing your furnace with a more energy efficient system will save you in long term repair costs.

Model and Design

Today’s furnaces are designed with new, high-tech heating systems whose greater efficiency helps homeowners save money, conserve natural resources and decrease the likelihood of HVAC hazards. An ENERGY STAR certification is a government-backed symbol that donates which HVAC systems deliver the most cost-saving and energy efficient solutions. Check out the ENERGY STAR Most Efficient 2018 designation for furnaces that represent the leading edge in energy efficient products this year.


The more strain you put on a furnace, the less likely it is to operate at full efficiency. But if you are not ready to replace an inefficient or outdated furnace, service and maintenance at least twice a year (every 6 months) is necessary to insure your HVAC system and home aren’t at risk.

Heaters enjoy a longer functioning life if they’re properly maintained, and if the air passages are not clogged with dirt and dust:

Air Filters: If your furnace filter is dirty during a heating cycle it will restrict the airflow, which means it won’t do a very good job pulling from your indoor air supply. Additionally, a severely clogged filter can stress your system components – reducing the functionality of your heating system and increasing your energy bills.

Dirty burners: When your burners aren’t clean, they can impede the combustion process. They won’t burn as hot as they should, making it harder for the furnace to satisfy your thermostat setting. If your burner flames are yellow, the burners are probably dirty and require maintenance.

Efficient Solutions

Ready to upgrade your furnace? The heating experts at Johnson Air offer a free assessment to determine what system is the most cost effective for long-term savings.

Not ready to upgrade yet? Getting your HVAC system regularly serviced is the best way to ensure your furnace stays efficient and reliable.

$79 Furnace Tune Up Special

To unlock your discount, simply fill out an appointment request and mention this discount in the comments section or give us a call at 1 (800) 637-0899.


Leave A Comment