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  • W.C. Eshenaur & Son, Inc.

Jul 15, 2025
Harrisburg Furnace Repair & Replacement.

No one wants to be without heating in the cold Pennsylvania winters, so if you spot the signs that you might need a furnace repair, it’s best not to delay. By calling in Harrisburg, PA professionals promptly, any repairs could potentially extend the lifespan of your furnace. Waiting too long to get any repairs carried out could mean you end up needing a full furnace replacement sooner than expected due to more extensive damage.

Top Six Signs That Indicate You Need a Furnace Repair or Replacement

A faulty furnace can represent a safety risk, so it’s essential to know the signs to look out for. Some of the most common include:

  1. Rising Energy Costs
    If you notice a change in your energy costs with no apparent cause, it could be a sign there’s a problem with your furnace. A malfunctioning furnace might have to work much harder to produce the same output, burning more fuel in the process. It may be as simple as a clogged filter, but it could also mean that your furnace needs to be replaced.
  2. Unusual Noises
    Be vigilant for any unusual noises, as this could indicate that your furnace needs to be checked over. You might notice various types of noises, such as knocking, whistling, squeaking, humming, or rattling. The type of noise your furnace makes can help to pinpoint the problem more quickly, so describing the sound and when it occurs to the professional can be very helpful.
  3. Unpleasant Odor
    Any new odors coming from your furnace warrant urgent investigation. If you notice a burning odor, or you can smell gas, call in the professionals right away. It may be caused by a dirty furnace that needs a professional clean, or there could be dangerous overheating. A professional will be able to check what’s going on and ensure your household is safe.
  4. Rapid Cycling
    Your furnace should work steadily, reading information from the thermostat to maintain a constant temperature. If you notice the furnace is turning on and off frequently, there may be a problem. This rapid cycling could be due to a malfunctioning thermostat, a failing heat exchanger, or you may need a complete replacement.
  5. Visible Signs of Wear
    It’s good practice to inspect your furnace regularly for signs of wear and tear, even if you haven’t noticed a problem with the performance. Rust, cracks, or general corrosion can all indicate the furnace might not be performing at its best. More importantly, cracks can present a carbon monoxide risk, so it’s vital to get any wear and tear properly checked out by a professional without delay.
  6. Aging Furnace
    No furnace can last indefinitely, so if yours is 15–20 years old, it might be time to consider a replacement. Modern furnaces are more energy-efficient so you could benefit from lower energy costs as well as reliable heating throughout your home.

Don’t Wait to Arrange a Furnace Replacement in Harrisburg, PA

If you recognize any of these signs, your furnace needs to be checked professionally. Some problems may initially seem severe but can easily be repaired. However, the longer a problem continues without being repaired, the more likely severe damage can be caused.

With our longstanding history of serving the community in and around Central Pennsylvania, we are proud to offer honest, high-quality professional services. If you have a problem with your furnace and need advice you can trust, get in touch with our friendly team at W.C. Eshenaur & Son, Inc in Harrisburg, PA.