Every member of the household relies on the furnace to deliver a steady supply of heat on demand. When it doesn’t work properly, it can disrupt the home and make everyone less comfortable—and, in particularly cold weather, less safe as well. For these reasons, it’s essential to monitor your furnace and be vigilant for signs of operational issues. Below are three red flags that you may need a new furnace installation.

How to Tell You Need a New Furnace

1. Age

Furnaces are long-lived appliances, but, unfortunately, they won't last forever. The average unit has a lifespan of 15 to 20 years. If your furnace has passed this mark, it may not be operating as dependably or efficiently as a newer model. If you're unsure of the age of the furnace, check the serial number and contact the manufacturer; they should be able to determine the age based on the number provided.

2. Skyrocketing Heating Bills

furnace installationHave you noticed your heating bills spiking significantly in recent months? This is a good indicator that a new furnace installation is needed. Old or broken furnaces have to work harder to produce the same amount of heat, which places wear and tear on the system and eats up more energy. There may not be an obvious difference in air or heat quality, so higher heating costs are often the only sign that a furnace is reaching the end of its usefulness.

3. Uneven Heating

In some cases, an old or broken furnace may not produce a consistent stream of air. The result of this is that some rooms will feel warmer, while others may have no substantial heat presence at all. You may be constantly adjusting your thermostat to find just the right temperature, often to no avail.


If you notice any of these warnings, ensure the comfort and safety of your household and schedule a new furnace installation. Since 1976, Stewart Air Conditioning & Heating has been serving property owners through Lexington, KY, and the surrounding communities. They provide a wide range of heating, air conditioning, and heat pump services, including installations, repairs, and maintenance. Call (859) 252-4945 or visit them online to request a furnace installation quote.