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WINTER TIPS

Winter Heating Maintenance: Preparing Before the Cold Bites

Essential furnace and heating system maintenance to keep your family warm and safe all winter long

October 15, 2024
9 min read
ServiceOne Team
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When the first cold snap hits, there's nothing worse than discovering your heating system isn't working. A furnace breakdown in the middle of winter isn't just uncomfortable—it can be dangerous, especially for families with young children or elderly members.

The good news? Most heating system failures are preventable with proper fall maintenance. This comprehensive guide will walk you through everything you need to do to prepare your heating system before winter arrives, ensuring your family stays warm, safe, and comfortable throughout the cold season.

75%

Heating Failures Occur in Winter

20%

Energy Savings with Maintenance

2x

Longer System Lifespan

Why Fall Heating Maintenance Is Critical

Your heating system has been idle for months. During this dormancy, dust accumulates, components can corrode, and small issues can develop into major problems. Starting your furnace without maintenance is like driving a car that's been parked all year without checking the oil—you're inviting trouble.

Safety First

Prevent carbon monoxide leaks and fire hazards with proper inspection

Lower Energy Bills

A tuned furnace uses up to 20% less energy than a neglected one

Avoid Emergency Repairs

Catch problems early before they become expensive mid-winter emergencies

Consistent Comfort

Maintain even heating throughout your home all winter long

Carbon Monoxide Warning

Carbon monoxide (CO) is an odorless, colorless gas produced by gas furnaces and boilers. A cracked heat exchanger or improper venting can leak CO into your home, causing serious illness or death.

Install CO detectors on every floor and test them monthly.

If your CO alarm sounds, evacuate immediately and call 911.

Your Pre-Winter Heating Checklist

Complete these essential tasks before the first freeze arrives

1

Replace Furnace Filters

A clean filter is the most important maintenance task you can do. Dirty filters reduce efficiency by up to 15%, increase energy bills, and can cause your furnace to overheat and shut down.

Pro Tip:

Check filters monthly during heating season and replace every 1-3 months. Buy filters in bulk at the start of winter so you always have replacements on hand.

DIY Friendly 10 minutes $10-30
2

Test Your Thermostat

Before you need it, make sure your thermostat is working properly and communicating correctly with your furnace.

Testing steps:

  • Switch from cooling to heating mode
  • Set temperature 5 degrees above room temperature
  • Listen for furnace to ignite within a few minutes
  • Feel vents for warm air circulation
  • Replace batteries if battery-powered
DIY Friendly 15 minutes
3

Check and Clean Vents and Registers

Blocked vents reduce heating efficiency and create uneven temperatures throughout your home. They can also cause your furnace to work harder than necessary.

What to do:

  • Remove all vent covers and vacuum them thoroughly
  • Vacuum inside ductwork as far as you can reach
  • Move furniture, curtains, or rugs blocking vents
  • Ensure all vents are open in rooms you use regularly
DIY Friendly 30-45 minutes
4

Inspect Your Furnace Flame

The color of your furnace flame tells you a lot about its health and safety. This is a critical safety check you should perform every fall.

What the flame should look like:

Blue flame with small yellow tips: Normal and safe
Yellow or orange flame: Incomplete combustion—call a professional immediately
Dancing or flickering flame: Possible draft issues—needs inspection
Visual Inspection 5 minutes
5

Seal Drafts and Insulate

Even the best furnace can't keep up with cold air rushing in through gaps and cracks. Proper insulation and draft sealing can reduce heating costs by 10-20%.

Priority areas to check:

  • Windows and doors (use weatherstripping)
  • Attic hatches and pull-down stairs
  • Electrical outlets on exterior walls
  • Basement rim joists
  • Fireplace dampers (close when not in use)
DIY Friendly 2-4 hours $30-100
6

Schedule Professional Inspection

While DIY maintenance is important, an annual professional inspection is essential for safety and optimal performance. HVAC technicians have specialized tools to detect problems you can't see.

Professional inspection includes:

  • Heat exchanger crack inspection (prevents CO leaks)
  • Gas pressure and connection testing
  • Electrical connection inspection and tightening
  • Blower motor and belt lubrication/adjustment
  • Ignition system and flame sensor cleaning
  • Combustion efficiency testing
Professional Required 60-90 minutes $100-200

Warning Signs Your Heating System Needs Attention

Don't ignore these red flags—they could indicate serious problems

Yellow or Flickering Flame

This indicates incomplete combustion and possible carbon monoxide production. Turn off your furnace and call a professional immediately.

Strange Noises

Banging, rattling, screeching, or popping sounds indicate mechanical problems. These often get worse over time if ignored.

Frequent Cycling

If your furnace turns on and off constantly (short cycling), it could be due to a faulty thermostat, clogged filter, or more serious issues.

Uneven Heating

Some rooms hot, others cold? This could indicate ductwork problems, failing blower motor, or insufficient insulation.

Unusual Odors

Burning smell, rotten egg odor (gas leak), or musty smells all require immediate attention. Don't run your system until inspected.

Skyrocketing Energy Bills

A sudden increase in heating costs means your system is working inefficiently, often due to a developing mechanical problem.

Don't Get Caught in the Cold

ServiceOne Warranty covers heating system repairs and annual maintenance. Get protected now and avoid expensive emergency repairs when temperatures drop.

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Winter Energy-Saving Strategies

Stay warm while keeping your heating bills under control

Optimize Thermostat Settings

Set your thermostat to 68°F when you're home and awake, and lower it to 60-65°F when sleeping or away. Each degree you lower saves about 3% on heating costs.

Smart upgrade: A programmable thermostat pays for itself in 1-2 years through energy savings. Program it to automatically adjust temperatures based on your daily schedule.

Harness Natural Heat

Open curtains on south-facing windows during sunny days to let in free solar heat. Close them at night to insulate against the cold glass.

Bonus tip: Thermal curtains can reduce heat loss through windows by up to 25%, especially effective on large or older windows.

Reverse Ceiling Fans

Run ceiling fans clockwise at low speed to push warm air down from the ceiling. This can make rooms feel 2-3 degrees warmer without touching the thermostat.

How to reverse: Look for a small switch on your fan's motor housing, usually near the blades. Switch it before turning the fan on.

Maintain Indoor Humidity

Winter air is dry, which makes you feel colder. Use a humidifier to maintain 30-40% humidity. Humid air feels warmer, allowing you to lower your thermostat.

Natural humidifiers: Houseplants, bowls of water near heat vents, and air-drying laundry indoors all add moisture to the air.

Zone Heating Strategy

Close vents and doors in unused rooms to concentrate heat where you need it. But don't close more than 20% of vents—it can strain your furnace.

Smart alternative: Use space heaters in frequently occupied rooms, allowing you to lower the whole-house thermostat setting.

Insulate Your Water Heater

Wrap your water heater in an insulation blanket and insulate hot water pipes. This reduces heat loss and eases the burden on your heating system.

Cost savings: Water heater insulation costs $20-30 and can save $20-45 annually. It pays for itself in the first year.

Potential Winter Savings

$300 - $600

By combining proper heating system maintenance with these energy-saving strategies, you can save $300-600 or more on your winter heating bills.

Stay Warm, Safe, and Comfortable All Winter

Preparing your heating system for winter isn't just about comfort—it's about safety, energy efficiency, and protecting your family from the dangers of carbon monoxide and freezing temperatures. The time you invest in fall maintenance pays dividends throughout the winter months in the form of lower energy bills, consistent comfort, and peace of mind.

Don't wait for the first freeze to discover your furnace isn't working. Start with these DIY tasks today, then schedule a professional inspection for complete assurance. Your family's comfort and safety are worth the investment.

Protect Your Heating System with ServiceOne Warranty

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  • 24/7 emergency heating service
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  • Annual maintenance included
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$59
per month
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