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How Central Heating System Replacement can Save You Money.

March 4, 2013

Why replace your central heating system?

A central heating system that is inefficient and not sealed correctly will waste a lot of energy which translates to overpayment on your utility bills! For every dollar you spend to heat your home you want to get back the most heating and comfort possible. The problem is that not all gas furnaces are the same, some have much higher efficiency than others. Also when a central heating system has air leaks, has been poorly installed, or not setup right, you waste that great efficiency.

In the example below we see a basic 80% gas furnace was installed, so for every dollar spent, 10 cents of our heat is lost up the vent pipe in burned gases. This home also has an average duct leakage of 30%, that means we’re losing 30 more cents of our heat into the attic. In total we are wasting at least 40 cents of every dollar we spend on our heating throughout the year. Finally, because there is little or no insulation in attic of this home, the heat produced leaves the home quickly and the furnace will run longer each day, raising your energy bills.
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In this second example the home was upgraded with a 98% efficient gas furnace only allowing a 2% loss up the vent pipe! New sealed ducting was installed as well, with an allowed leakage rate of only 6%. This means that for every dollar spent on the heating in this home a full 92 cents goes right towards the actual comfort of the home. Since the attic insulation is at the proper levels the heat stays within the home, it’s more comfortable, and this homeowner sees an average of 20% less in their energy bills!
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Of course these are simplified approximations of central heating system efficiency and there are many more variables involved as each home has unique challenges that effect overall energy savings. Call Bob Jenson A/C for a free in-home evaluation to determine how you can get the most out of every dollar you spend and increase your comfort and energy savings today!

Other Factors that Effect Heating Efficiency
  • Proper equipment installation & setup
  • Correct furnace size
  • Correct ductwork sizing, layout and balance
  • Programmable or learning thermostat
  • Multi-stage operation
  • Variable speed capability

About The Author

Bob Jenson

For over 45 years, Bob Jenson has been providing quality heating and air services to the San Diego community.

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