What is furnace short-cycling?

Furnace short-cycling is when your furnace turns on and off in short, frequent bursts without completing a full heating cycle. This can lead to inefficient heating, increased energy bills, and premature wear on your system.

What is the most common cause of furnace short-cycling?

The most common cause of furnace short-cycling is a dirty or clogged air filter. A clogged filter restricts airflow, causing the furnace to overheat and shut down prematurely.

Can I fix a short-cycling furnace myself?

You can perform basic troubleshooting steps like changing the air filter and ensuring all vents are open. However, for more complex issues, it's best to call a qualified HVAC technician to avoid further damage.

How does an oversized furnace cause short-cycling?

An oversized furnace heats the space too quickly and shuts off before the heat can be evenly distributed. This rapid heating and cooling cycle leads to frequent on/off cycles.

Why is regular furnace maintenance important in Coquitlam?

Coquitlam's damp climate can cause issues like corrosion and blockages in your furnace. Regular maintenance ensures your system runs efficiently and helps prevent problems like short-cycling.

Why Your Coquitlam Furnace Is Short-Cycling and What...

Heating · 5 · 2026-03-12

A short-cycling furnace can be a sign of underlying problems. Learn the common causes and what to do to keep your Coquitlam home warm.

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