Home & Garden
Washington Homeowners: Do It Yourself Furnace Cleaning Tips
Here's everything you need to know about inspecting and servicing your furnace before winter arrives in full force.

When it comes to surviving another Washington state winter you don’t want to take your heating system for granted. At this time of year, your furnace works harder than ever to heat your home and keep your family toasty and warm.
This is why your home maintenance checklist should include a yearly furnace inspection and tuneup to ensure that it’s running efficiently and doesn’t fail you when you need it most.
Regular furnace maintenance and servicing lets you:
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- Be proactive and keep your furnace running efficiently all year round.
- Protect your family from deadly carbon monoxide leaks.
- Avoid thousands of dollars in future repairs.
- Prolong the life of your furnace and heating system.
Annual furnace maintenance doesn’t have to break your budget or take a lot of time. For as little as $30 to $50 and using only a few hand tools, you can complete your own furnace service in less than three hours.
Use these tips for basic maintenance and cleaning tasks that you can do on your own to keep your furnace in optimum running condition:
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1. Before you start
Before beginning any furnace maintenance, make sure to turn off all power to the unit by switching off the circuit breaker or removing the fuse.
2. Clean blower fan
Remove the blower, which is held in place by screws, and clean each blade and the space in between with a toothbrush. Finish up by vacuuming away debris and dust.
3. Lubricate motor
If the furnace motor has oil ports, you’ll need to lubricate at least once a year. Add 2 to 3 drops of 10-weight non-detergent motor oil to each of the ports.
4. Replace filter
Furnace air filters should be inspected and replaced once every month. A $2 filter will be adequate but consider spending $15 for one that’s high efficiency.
5. Inspect and replace belt
Motor belts need to be inspected for tension, cracks, and damage. The belt should be firm when pressed and will need to be replaced if it gives more than a half inch.
6. Inspect duct joints
Check duct joints and if you feel any leaks, seal them using metal tape.
7. Check outside vents
Do an outside check for any debris or snow blockage around vents and chimneys.
8. Hire a pro
Many homeowners prefer to rely on the experience and knowledge of a professional for furnace maintenance. For a cost of between $100 to $150, heating contractors can do a more thorough job of servicing your furnace, including analyzing combustion gases and inspecting wiring.
Is it time for your annual heating system maintenance and service? Contact a Washington state HomeAdvisor heating contractor to schedule a furnace tuneup with a professional.
This Patch article is sponsored by Home Advisor.