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Homeowners' Guide to Furnace Replacement

You rely on your furnace to keep your home warm during cold weather. If your unit has reached the end of its lifespan or is operating inefficiently, it’s advisable to install a new furnace.

At Absolute HVAC Service, we are a professional HVAC company that specializes in furnace installation, furnace repair, furnace maintenance, and more. In this article, we will walk you through some of the things you may need to know about furnace replacement.

How Do I Know If It’s Time To Replace

There comes a point when even the most durable and well-maintained furnace needs to be replaced. Often, a furnace will provide signs that it’s due for replacement. Here are the top signs you need a furnace replacement:

  • Your Furnace Is Aging: The average lifespan of a furnace is about 15 to 20 years. If your unit is more than 15 years old, you should start considering replacement.
  • Your Furnace Requires Repairs Repeatedly: If your furnace has needed frequent repairs over the last two years, then it may be time to replace it. To determine whether furnace replacement makes financial sense, add up the cost of furnace repairs over the last two years. If the cost of repairs is over 50% of the cost of a new furnace, then it’s probably time to install a new one.
  • It Doesn’t Provide Sufficient Warmth: As your furnace ages, it might have difficulty providing sufficient warmth to all parts of your house. If your furnace is heating your rooms unevenly, it may be time to invest in a new unit.
  • Energy Bills Are Increasing: A steady increase in your energy bills over the years may mean that you need a furnace replacement.

Things to Consider When Buying a New Furnace

AFUE Rating

Annual Fuel Utilization Efficiency (AFUE) measures how efficiently a furnace converts fuel to heat. AFUE ratings are measured between 0-100%. The higher the AFUE rating, the more efficient the furnace.

Load Calculation

Load calculation is used to determine the correct size for your furnace by taking into consideration your home’s size, number of rooms, age, ventilation, layout, and many other factors. This is usually performed by an HVAC technician.

BTU capacity

 The BTU (British Thermal Unit) rating indicates the amount of energy a furnace uses to produce heat. A furnace with a higher BTU rating has a higher heat output.


Modern furnaces are equipped with a range of features, including variable-speed blower, variable heat output, air pressure switch, electronic ignition, zoning system capability, heat exchangers, and high-performance air filtration. You should go for a furnace that comes with features that offer superior performance, efficiency, comfort, and safety.


Furnaces come with warranty coverage for new parts and labor costs to help you save on repairs over the long term.

Is It Time To Replace Your Furnace? Reach Out To Absolute HVAC Service

Is it time to install a new furnace in your home? Is your furnace in disrepair, and you’re looking for a professional HVAC company to help you with furnace repair? Get in touch with Absolute HVAC Service for reliable HVAC services. At Absolute HVAC Service, we take pride in providing efficient furnace repair, furnace replacement, HVAC installation, and other HVAC services.