Furnace Maintenance Checklist To Save Money This Winter (2024)

If you have not had time all year to tune up your furnace, then fall is a good time to do so before the eventual arrival of winter.

Regular maintenance of your furnace will ensure you have heat when you need it, reduce your heating and repair bills, and prolong the life of your furnace.

While you may need a professional to repair your furnace, you can complete most maintenance tasks on your own without spending a penny.

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Here are eight tasks you need to have on your furnace maintenance checklist to ensure your furnace does not disappoint this winter:

1. Conduct a Visual Inspection

Furnaces are typically in the basem*nt and out of the sight of most homeowners. Maintenance time is a good time to inspect the furnace and check for any telltale signs of trouble or issues.

Some things you may observe that need further attention include signs of black soot, a condensate tube filled with algae, tubes not properly attached, rust, mainly yellow flames, etc.

Your observations may uncover minor issues that can be corrected easily or major issues that may need a specialist to look at.

Note: If you are going to be opening up the furnace cover to look inside, it’s a good idea to first turn off the electrical power and gas supply for your safety!

2. Change the Furnace Air Filter

Changing the air filter in your furnace regularly is one of the most important things you can do to keep it working efficiently. When the filter becomes plugged, the furnace has to work harder to get air moving.

Different filter types come with differing recommended replacement periods, for example, every 1 month, 3 months, or longer. A routinely changed filter can significantly reduce your energy bill by as much as 15%.

Newer thermostats have a reminder option that allows you to set a reminder that alerts you when it’s time to replace the air filter.

Furnace Maintenance Checklist To Save Money This Winter (1)

3. Clean Warm Air Vents and Registers

Floor vents that bring up the warm air into your home may get clogged over time with dust, pet hair, food, and other debris. Remove floor registers and vacuum out the air ducts at least once a year to keep them clean.

Kids can remove registers and fill them with “stuff.” Check that toys are not stuffed down your registers and choking up your furnace.

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4. Check Cold Air Return Vents

Cold air return vents carry back cold air from your house to the furnace for reheating. They often get neglected and may even become blocked or covered as you move furniture around. They can also get dusty.

Vacuum cold-air return registers at least once a year and check that they are not closed off or blocked by other things.

5. Check the Intake and Exhaust Pipes

We can usually find the air intake and exhaust pipes for your furnace located outside your house. They may get plugged with ice, snow, leaves, critters, vegetation, or other debris.

Check them often to ensure that they are not blocked.

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6. Vacuum Accumulated Dust in the Furnace

After a few years of use, dust and dirt may accumulate in your furnace. A vacuum with a long nozzle can get rid of these unwanted visitors.

If you hire a professional to tune up your furnace annually, this is one task they have on their checklist.

7. Check the Main Air Ducts for Leakage

Check the main air ducts that leave your furnace and carry heated air to different parts of your home for leakage. You can easily seal leaks using foil tape or duct mastic.

This ensures you get the full benefit of the warm air leaving your furnace, reduce energy loss and lower your energy bill.

8. Check the Carbon Monoxide Detector

Although not part of your heating and cooling system, it makes sense to install a carbon monoxide detector close to where your furnace is located.

Carbon monoxide is a very toxic gas, and because it’s odourless, you cannot depend on your senses to detect it. At the time of your furnace maintenance, test the detector to ensure it’s in good working order.

If you have a battery-operated carbon monoxide detector, consider replacing the batteries.

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Conclusion

It does not take much time to carry out the simple maintenance tasks mentioned above.

When the cold season arrives, do not forget to turn off your air conditioner and protect it from harsh winter conditions. Having your AC come on in freezing weather can cause serious damage to the compressor.

Furnace Maintenance Checklist To Save Money This Winter (2)
Furnace Maintenance Checklist To Save Money This Winter (2024)

FAQs

How can I help my furnace in the winter? ›

Make sure air vents and radiators are not blocked or obstructed. Keep furnace vents leading outside near ground level clear of snow or ice. If you have a fireplace without glass doors, don't use it during extreme cold weather since most of the heat goes up the chimney. Utilize ceiling fans to push warm air down.

What routine maintenance is required for a furnace? ›

Schedule Regular Checkups

Check vents, flues, and intakes for blockages and free flow of air. Inspect the heat exchanger and blower. Lubricating and inspecting moving parts, such as the blower fan. Performing electrical checks on furnace components and electrical connections.

How to service a furnace for winter? ›

  1. Change Furnace Filter. ...
  2. Change Thermostat Batteries/Reprogram Thermostat. ...
  3. Clear Furnace Flue and Surrounding Clutter. ...
  4. Routine Maintenance and Safety Check. ...
  5. Get Your Ducts in a Row.
Nov 24, 2020

What to do before turning on furnace for winter? ›

9 Things You Should Do Before Turning On a Furnace
  1. Check the filters. ...
  2. Replace filters if needed. ...
  3. Check if the thermostat is working properly. ...
  4. Test smoke and carbon monoxide detectors, replace batteries (if needed) ...
  5. Clear the area around the furnace. ...
  6. Inspect for leaks. ...
  7. Duct Cleaning. ...
  8. Inspect vents outdoors.

Do furnaces struggle in extreme cold? ›

HVAC System Might Not Keep Up

Depending on how cold it is outside, you may not be able to turn up your thermostat as high as you would like. Furnaces are rated to perform with a certain efficiency and can't always keep up with the heat loss for a home when exterior temperatures are lowest.

Is it normal for a furnace to run nonstop in extreme cold? ›

One of the most common complaints among homeowners who possess a furnace is that their unit runs continuously. Unless you also have a heat pump (which can cause your unit to run frequently to maintain a set temperature during extremely cold weather), your furnace should cycle on and off at regular intervals.

What is the first thing you check when maintaining a furnace? ›

The filter should be the first place you start. In a forced-air central heating system, the filter plays a critical factor in keeping your furnace clean, efficient, and functional. (Watch our video on how to change a furnace filter.) The furnace filter is located between air supply and the air return of your furnace.

Are annual furnace inspections really necessary? ›

Yes, having an annual furnace inspection and tune-up will help to ensure you and your family aren't without heat this fall and winter. Furnace manufacturers all recommend annual inspections and maintenance by a qualified technician.

What is the most efficient temp for furnace in winter? ›

But why is 68 degrees the best winter thermostat setting? In winter, heat loss through walls, windows, and doors is a significant contributor to energy wastage. At 68 degrees, your heating system provides enough warmth to counteract this heat loss.

Can I clean my furnace myself? ›

Cleaning, changing filters, and lubricating your furnace are fairly straightforward steps in ensuring your unit will work efficiently for the season. It may take you a few hours to become familiar with all of its parts but once you have done it a few times, a furnace cleaning should take 1-2 hours.

How many hours a day should furnace run in winter? ›

Rather than running constantly, your furnace operates in cycles allowing it to heat your home without constantly being “on.” Generally speaking, your furnace will only be actively producing heat for up to 9 hours a day over multiple cycles.

How many degrees should you turn your furnace down at night? ›

HVAC replacement companies recommend turning the temperature down by at least eight degrees before you go to sleep for eight hours or more, depending on how long you sleep at night.

What should you turn your furnace down to at night? ›

When it comes to the best temperature for your furnace in the winter at night, it is time to turn that thermostat down. As a general rule, the recommended heater temperature at night is between 60 and 67 degrees Fahrenheit. A thermostat setting of around 65 degrees is actually better for your health.

How often should furnace turn on and off in winter? ›

On average, furnaces should kick on and turn off anywhere from three to eight times per hour. However, if your furnace turns on and off more frequently, don't assume the furnace is short cycling just yet.

Why is my furnace not working in the winter? ›

Confirm that the thermostat is set to heat mode. Inspect Power Supply: Make sure the furnace is receiving electricity. Check for a blown fuse or tripped circuit breaker in the electrical panel. Check that the furnace's power switch is on.

How do I keep my house warm when my furnace fails? ›

Clever Ways To Keep Warm When Your Furnace Breaks Down
  1. Leave the Oven Open. Cooking dinner or baking a delicious dessert? ...
  2. Close Unused Rooms. Do you have a storage room or unused guest space in your home? ...
  3. Layer on Layers. ...
  4. Lay Down Area Rugs. ...
  5. Start Moving. ...
  6. Do Laundry. ...
  7. Fill a Hot Water Bottle. ...
  8. Drink a Hot Beverage.
Dec 12, 2018

Why does my furnace not work when its cold? ›

It could be that the thermostat batteries are low or that there is a wiring issue preventing the thermostat from signaling the furnace to run. Your furnace could also be faulty or not getting an accurate temperature reading and thus not signaling the furnace to run even though your house is cold.

Why is my furnace struggling to heat the house? ›

Check the Furnace Filter.

A dirty furnace filter is one of the most common reasons furnaces don't produce enough heat. Luckily, this is an easy and inexpensive fix. While you're at it, buy one or two extras and make a note in your calendar to check it again in a month.

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