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What Are Common Signs of a Malfunctioning Furnace?

Posted on: December 14, 2023

Technician working on a furnace.

Winter’s chill demands a reliable heating system to keep your home cozy and comfortable. But what happens when your furnace, the core of your home’s heating, starts to show signs of wear or even malfunction? Being vigilant about your furnace’s condition is essential for safety and comfort.

Having been a trusted HVAC authority in the San Marcos area since 1986, SM Air offers this comprehensive guide to understanding and identifying common furnace issues.

Our experience and expertise have always been at the core of service to our community because, as our motto goes, “We do more because we care.”

1. Unusual Noises

Why It Matters

A furnace should operate relatively quietly. If you start hearing unusual sounds — such as bangs, squeals, or whining — it’s a clear sign that something is wrong. These noises could indicate anything from loose belts to ignition problems.

Expert Tip

Do not attempt to resolve this issue yourself; it requires a professional diagnosis. SM Air’s trained technicians can identify the exact cause and offer a lasting solution, ensuring your home retains the comfort you desire for you and your family.

2. Inconsistent Heating

Why It Matters

If some rooms in your house are colder than others, it may mean your furnace isn’t distributing heat evenly. This problem compromises comfort and can increase your energy bills.

Expert Tip

A thorough inspection of your ductwork and furnace settings can resolve this. Properly calibrated thermostats and sealed ducts can ensure uniform heating, enhancing comfort and efficiency.

3. Frequent Cycling On & Off

Why It Matters

If your furnace turns on and off frequently, also known as short-cycling, it could be due to overheating or improper system size. Short-cycling can lead to increased wear and tear, reducing the furnace’s life span.

Expert Tip

A technician can check for overheating issues and evaluate if the furnace size is appropriate for your home. Sometimes, a simple filter replacement can resolve overheating problems.

4. Persistent Bad Odors

Why It Matters

A musty or burning smell isn’t just unpleasant; it can indicate potentially hazardous conditions like gas leaks or electrical issues.

Expert Tip

Turn off the furnace immediately and consult professionals. SM Air’s certified technicians are equipped to handle emergency situations and ensure your home’s safety.

5. Rising Energy Bills

Why It Matters

A sudden increase in your energy bill can often be traced back to a furnace working harder to maintain the desired temperature. This inefficiency costs you money and can signify a deeper mechanical issue.

Expert Tip

Energy-efficient models or a furnace tune-up can often resolve this problem. SM Air offers top-of-the-line, energy-efficient furnaces and tune-up services that prioritize your long-term savings.

6. Poor Air Quality

Why It Matters

A malfunctioning furnace can distribute pollutants throughout your home, affecting the indoor air quality. This could result in health issues like allergies and respiratory problems.

Expert Tip

Regular maintenance and air filter replacements can go a long way in improving indoor air quality. Consider adding air purifiers and humidifiers to further enhance your home’s atmosphere.

In Summary

Being aware of these red flags can save you time and money, and prevent potential hazards. However, recognizing the problem is just the first step; proper diagnosis and resolution are crucial.

With nearly four decades of expertise, SM Air is committed to providing accurate, reliable solutions that prioritize your comfort and safety. Our customer service team is designed to educate, not just repair, because we believe an informed customer is a happy customer.

As the winter chill sets in, ensure your furnace is in tiptop shape. Schedule a comprehensive inspection with SM Air today and keep your home comfortable and safe all season.

We’re proud of our long-standing history and the advanced solutions we’ve been offering to the San Marcos community since 1986. Learn more about us to understand why we’ve been trusted by your neighbors for so many years.

Contact us today for more details or to schedule an appointment. Let SM Air be your guide in ensuring a winter of warmth and peace of mind.