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Preparing Your Furnace for Fall: Key Inspections Before Winter in Harrisburg, PA

As temperatures fluctuate throughout the year in Harrisburg, PA, homeowners understand the importance of a reliable heating system. A well-maintained furnace ensures comfort and efficiency, keeping energy bills in check while preventing costly breakdowns. But before the winter chill sets in, your furnace needs a thorough inspection to guarantee it’s in peak condition.

Neglecting regular maintenance can lead to reduced performance, higher energy consumption, and even safety hazards. According to the U.S. Department of Energy, routine HVAC maintenance can improve system efficiency by 5-15%, significantly lowering heating costs. In this guide, we’ll walk you through essential furnace inspections to complete before winter arrives.

Why Furnace Inspections Matter Before Winter

The furnace is one of the hardest-working appliances in your home during cold months. Without proper maintenance, it may struggle to heat your home effectively, leading to uneven temperatures, excessive energy use, and potential safety risks. Here’s why a pre-season furnace inspection is crucial:

  • Improves Efficiency – A clean and well-tuned furnace runs more efficiently, consuming less energy and reducing your utility bills.
  • Extends Lifespan – Preventative maintenance can add years to your furnace's life, delaying expensive replacements.
  • Enhances Safety – Furnaces burn fuel to produce heat, and without proper maintenance, they can develop gas leaks or carbon monoxide hazards.
  • Prevents Emergency Repairs – Nearly 75% of winter furnace breakdowns are due to lack of maintenance, often requiring costly emergency repairs.

Now, let’s break down the key inspections every homeowner in Harrisburg should complete before the heating season begins.

1. Check and Replace Your Furnace Filter

A clogged or dirty furnace filter restricts airflow, forcing the system to work harder and increasing energy consumption. According to the Environmental Protection Agency (EPA), replacing a dirty filter can lower your energy bill by 5-15%.

How Often Should You Replace Your Furnace Filter?

  • Every 1-2 months for standard 1-inch filters
  • Every 3-6 months for high-efficiency pleated filters
  • More frequently if you have pets or allergies

Checking and replacing your filter is one of the simplest yet most effective ways to maintain furnace efficiency.

2. Inspect the Thermostat for Accuracy

Your thermostat acts as the brain of your heating system. If it’s malfunctioning or inaccurate, it can lead to wasted energy and uncomfortable indoor temperatures.

How to Test Your Thermostat:

  1. Set the temperature a few degrees higher than the current room temperature.
  2. Listen for the furnace to turn on within a minute or two.
  3. If it doesn’t activate, the thermostat may need calibration or replacement.

Consider upgrading to a programmable or smart thermostat, which can reduce heating costs by up to 10% annually, according to the U.S. Department of Energy.

3. Inspect and Clean Furnace Burners

Over time, dust and debris can accumulate on furnace burners, leading to inefficient combustion and uneven heating. Dirty burners can also cause delayed ignition, producing loud booming noises when the furnace starts.

Signs Your Furnace Burners Need Cleaning:

  • Yellow or flickering flames instead of steady blue flames
  • Delayed ignition (a loud "whoosh" or boom)
  • Soot buildup around the burners

A professional HVAC technician can safely clean and adjust burners to ensure optimal performance and efficiency.

4. Test the Furnace Blower Motor

The blower motor is responsible for circulating warm air throughout your home. If it’s not functioning correctly, your furnace won’t distribute heat efficiently.

How to Inspect the Blower Motor:

  • Listen for unusual noises like grinding, squealing, or rattling, which may indicate worn bearings or a failing motor.
  • Check the blower belt for signs of wear, cracks, or looseness.
  • Ensure proper airflow by cleaning dust buildup from the blower assembly.

A failing blower motor can reduce efficiency and lead to costly repairs, so it’s important to address issues early.

5. Examine the Heat Exchanger for Cracks

The heat exchanger is a critical component that prevents harmful gases, like carbon monoxide, from entering your home. Over time, wear and tear can cause cracks, posing a serious safety risk.

Warning Signs of a Cracked Heat Exchanger:

  • Strange smells, like a strong chemical odor
  • Soot buildup inside the furnace
  • Symptoms of carbon monoxide exposure, such as headaches or dizziness

Since heat exchanger damage is difficult to detect without specialized tools, it’s best to schedule a professional furnace inspection for peace of mind.

6. Check for Gas Leaks and Carbon Monoxide Risks

A furnace that burns natural gas or propane should always be checked for leaks before the heating season. Gas leaks are not only dangerous but can also lead to increased energy bills.

How to Detect a Gas Leak:

  • Listen for a hissing sound near gas lines.
  • Smell for a sulfur or "rotten egg" odor.
  • Inspect gas connections for corrosion or loose fittings.

Additionally, install carbon monoxide detectors near sleeping areas and on every level of your home. The Centers for Disease Control and Prevention (CDC) reports that carbon monoxide poisoning sends over 50,000 Americans to the emergency room annually, emphasizing the importance of prevention.

7. Clean and Inspect Air Ducts

Your furnace relies on ductwork to distribute warm air throughout your home. Over time, dust, pet dander, and debris can accumulate, restricting airflow and reducing efficiency.

Benefits of Air Duct Cleaning:

  • Improves indoor air quality by removing allergens and pollutants
  • Enhances furnace efficiency, lowering energy costs
  • Reduces wear and tear on the blower motor

A professional duct inspection can determine if cleaning is necessary and identify any leaks that may be affecting system performance.

8. Test the Safety Controls and Ignition System

Your furnace has built-in safety controls designed to prevent overheating, gas leaks, and other hazards. These components should be tested before winter to ensure they’re functioning properly.

Key Safety Checks Include:

  • Flame sensor testing to ensure the burners ignite correctly
  • Limit switch testing to prevent overheating
  • Gas pressure checks to verify proper fuel flow

Skipping these tests can increase the risk of malfunctions and reduce furnace reliability during the coldest months.

9. Schedule a Professional Furnace Tune-Up

While some maintenance tasks can be done by homeowners, a professional furnace tune-up ensures your system is running at peak performance.

What’s Included in a Professional Furnace Tune-Up?

  • Comprehensive inspection of all components
  • Cleaning of burners, blower, and heat exchanger
  • Testing of safety controls and thermostat calibration
  • Checking for gas leaks and carbon monoxide issues

Many HVAC professionals recommend annual furnace maintenance to prevent breakdowns and optimize efficiency.

For Heating Services in Harrisburg, PA, Contact WM Buffington Company Heating, Cooling & Plumbing Today

A well-maintained furnace ensures warmth, efficiency, and safety throughout the winter. By completing these key inspections before the heating season, you can avoid costly repairs, lower your energy bills, and enjoy a comfortable home.

At WM Buffington Company Heating, Cooling & Plumbing, we specialize in professional furnace maintenance, repair, and installation services in Harrisburg, PA. Our experienced technicians provide thorough inspections and tune-ups to keep your heating system running smoothly all winter long.

Don’t wait until the first cold snap to check your furnace! Call WM Buffington Company Heating, Cooling & Plumbing today to schedule your furnace inspection and ensure reliable warmth for the season ahead.

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