Repairing Error Code 229 on Your Lennox® Furnace

Getting error code 229 on your Lennox® furnace?

This means your furnace is ignited at high speed because its low pressure switch wouldn’t close.

It’s important to allow an Expert like one from Service Experts Heating, Air Conditioning & Plumbing in the U.S. finish repairing or replacing this part. Our technicians are ACE certified, which means they’re ready to fix a furnace error like yours.

We want you to be fully content with our furnace repair in the U.S.. That’s why we back all of our work with a one-year 100% Satisfaction Guarantee.*

How a Low-Fire Pressure Switch Works

Two-stage furnaces have various pressure switches to allow the system to run at different speeds—and be more efficient. These switches also make sure your furnace runs safely and vents extraneous gases from the heat exchanger.

What Happens When a Low-Fire Pressure Switch Malfunctions

Your low pressure switch may not be operating properly if your furnace inducer motor begins in high speed and high ignition, then weakens and shifts into low-fire mode about 30 seconds later.

Your HVAC will demonstrate something’s wrong with a red flash from its indicator light, which it uses to show error codes. It has this red light to flash code, like Morse code.

You may see fast flashes or an alternating slow flash as it reports a fault code.

Estimated Repair Cost for Furnace Error Code 229

A blocked vent or a draft can also generate the error, so your Service Experts Heating, Air Conditioning & PlumbingExpert will look at other parts of your furnace first.

The cost to fix your furnace relies on what’s wrong with it and how long it takes to fix it.

You can plan to pay between $40 and $350 if you require a new low-fire pressure switch.

Trust the Experts at Service Experts Heating, Air Conditioning & Plumbing

When you need to have your furnace mended, turn to the Experts at Service Experts Heating, Air Conditioning & Plumbing to work out the fault code and take care of the situation.

Call us at or schedule an appointment online today.

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