HVAC Myth-Busting & End-of-Season Tips for Western Washington Homeowners

Have you ever heard closing vents in unused rooms saves energy — or your system doesn’t need maintenance every year? These myths can quietly cost homeowners comfort, efficiency, and money.

In this blog, we’ll bust one of the most common HVAC myths, share practical end-of-season maintenance tips, and help you protect your comfort and efficiency as we move into colder months.

This time of the year, our weather is ever changing, we wake up not knowing what season we’ll experience. We can have heavy frost in the morning, 60 degrees in the afternoon, and then a windstorm that takes out our power overnight!  It’s also the time of year when many homes start using their heating system, making it the perfect time to prep your HVAC system for winter.

Why Common HVAC Myths Can Cost You

The internet is full of DIY tips and “energy-saving hacks,” but not all of them hold up. One of the biggest misconceptions is closing vents in unused rooms helps save money.

Here’s the truth: your HVAC system is designed to move air evenly through your ductwork. When vents are closed, the system can’t circulate air properly, creating excess pressure that can:

• Force air leaks at duct seams.
• Cause your blower motor to overwork.
• Lead to uneven temperatures throughout your home.

Instead of helping, these myths can actually shorten equipment life and increase repair needs — especially in homes with older duct systems common throughout our region.

 

The Benefits of Smart HVAC Maintenance

Staying ahead of seasonal maintenance helps your system run more efficiently and prevents those unexpected cold-weather breakdowns.

According to ENERGY STAR, annual HVAC tune-ups can improve system efficiency by up to 15% and significantly extend equipment life.

A well-maintained system will:

• Use less energy to heat your home.
• Maintain more consistent indoor comfort.
• Improve air quality by reducing dust and debris buildup.
• Keep your warranty valid and your equipment protected.

DIY HVAC Care You Can Do This Fall

Here are simple things homeowners can do to keep systems running smoothly as temperatures drop:

1. Change or clean air filters. Dirty filters reduce airflow and make your system work harder. Check them monthly.
2. Seal air leaks. Use caulk or weatherstripping around doors and windows to prevent warm air from escaping.
3. Clear debris from outdoor units. Keep at least two feet of space around your heat pump or condenser.
4. Test carbon monoxide detectors. Replace batteries twice a year if you use gas or fuel-burning appliances.
5. Adjust your thermostat. Lower settings by 5–8°F at night to save on heating costs.

When in doubt, call a professional — especially before winter storms arrive.

Why Call a Professional

Professional maintenance does more than basic cleaning — it ensures your system operates safely and efficiently.

During a fall tune-up, your HVAC technician will:

• Inspect and clean internal components.
• Check refrigerant levels and electrical connections.
• Test safety systems and thermostat performance.
• Identify small issues before they cause breakdowns.

Relying on trained technicians protects your investment and ensures your heating system is ready for the long, damp winter ahead.

Fall HVAC Tips for Your Home

Our local climate poses unique challenges — from heavy rainfall to wind-driven debris. Keep these local insights in mind:

• Clear outdoor units regularly. Falling leaves and branches can clog coils or restrict airflow.
• Balance humidity. Aim for 30–50% indoor humidity to prevent both dryness and mold growth.
• Plan ahead for storms. Have flashlights, blankets, and a safe backup heat source ready before power outages hit.

Our weather can shift quickly — a little prep now goes a long way toward uninterrupted comfort later.

Frequently Asked Questions

Q: Does closing vents really save energy?
A: No — it actually increases pressure in your ductwork and can strain your system. Keep vents open for balanced airflow.

Q: How often should I replace my HVAC filter?
A: Check monthly and replace every 1–3 months depending on dust levels, pets, or allergies.

Q: What’s included in a professional tune-up?
A: Cleaning, safety checks, refrigerant inspection (for heat pumps), and performance testing.

Q: Should I cover my outdoor unit in fall?
A: Only with a breathable cover designed for HVAC systems. Never use a plastic tarp.

Q: How can I improve indoor air quality in fall and winter?
A: Run your fan periodically, use a whole-home air purifier, and consider adding houseplants for natural filtration.

Key Takeaways:

• Closing vents in unused rooms doesn’t save energy — it strains your system.
• Fall tune-ups improve efficiency, prevent repairs, and extend system life.
• Filter changes, sealing drafts, and clearing outdoor units are simple but powerful DIY steps.
• Western Washington’s damp climate makes pre-winter prep especially important.

Want to make sure your system is ready for colder weather? Schedule your fall tune-up with Ranger Heating & Cooling today and enjoy a cozy, energy-efficient home all season long.