Our team is growing! View current openings and apply today. Read More

Skip navigation

24-Hour Service

Menu

Heating

How to Spot the Top 5 Early Warning Signs of a Failing Furnace

Home | Blog | Published on November 10th, 2025

As the days grow shorter and the chill of November settles in, most of us in Penn Hills are focused on gathering with loved ones, planning Thanksgiving feasts, and reflecting on what we’re thankful for. We’re grateful for the trust our customers place in us year after year—and we’re committed to helping you stay cozy, safe, and comfortable all season long.

That’s why we want to share a few tips on how to recognize when your furnace is struggling. Could it be time to consider furnace replacement in Penn Hills, PA? Let’s take a closer look before winter weather hits its stride.

1. Uneven or Insufficient Heat

One of the earliest and most common signs of a failing furnace is inconsistent heating. You may notice that some rooms feel toasty while others stay chilly, or that your furnace runs constantly without quite reaching your desired temperature. These symptoms can point to issues such as worn-out components, clogged filters, or declining overall system efficiency. If your furnace just isn’t keeping up like it used to, don’t ignore it—early attention can prevent a full breakdown later.

2. Unusual Noises or Smells

Your furnace should hum quietly in the background, not clank, rattle, or whistle. Strange sounds often signal that something inside—like a fan motor, belt, or bearing—is wearing out or coming loose. Similarly, odd odors—especially those that smell metallic, burnt, or musty—could indicate electrical issues, overheating, or even mold in your ductwork. Think of these as your furnace’s way of asking for help before the problem becomes serious.

3. Rising Energy Bills

If your heating bills are creeping higher without any major change in your thermostat settings or weather conditions, your furnace may be losing efficiency. Aging furnaces must work harder to produce the same amount of heat, which means they use more fuel or electricity. Regular maintenance can help improve efficiency, but if your system is 12-15 years old, it might be nearing the end of its lifespan.

4. Frequent Cycling or Constant Repairs

Another red flag is short cycling—when your furnace turns on and off repeatedly without completing a full heating cycle. This wastes energy and strains your system’s components. Likewise, if you’ve called for repairs more than once or twice in the past couple of years, it may be more economical (and reliable) to invest in a new furnace rather than keep patching up an old one.

5. Changes in Air Quality

A failing furnace can impact more than your comfort—it can affect your home’s air quality, too. Excess dust, dryness, or even signs of carbon monoxide (like frequent headaches or dizziness) are serious indicators that something’s wrong. Schedule a professional inspection immediately if you notice any of these issues.

As you prepare to welcome family and friends this Thanksgiving, there’s no better gift to yourself than peace of mind and warmth you can count on. From all of us, thank you for letting us be part of your home’s comfort year after year. If you suspect your furnace is showing signs of wear, reach out to our friendly local team today. We’ll make sure your system is safe, reliable, and ready to keep your family warm all winter long.

Call the friendly staff at Boehmer Heating & Cooling for exceptional customer service! Discuss your furnace replacement in Penn Hills, PA with our team today.

Let Us Help You Save Even More

Find More Promos

90 Years of Satisfied Customers

View All Reviews

Serving the Greater Pittsburgh Area