Is That Furnace Firing Right?

Here are the things to check, when the furnace seems fine but isn’t producing enough heat.

As an HVAC Pro, you’ll sometimes run into a furnace that appears to be working, but doesn’t produce enough heat to keep the homeowner comfortable. In this short training video from HVAC Learning Solutions, Technical Training Manager Jose De la Portilla walks you through the things to check on the furnace. If the gas pressure, manifold pressure, temperature rise, air flow and air flow static pressure are all good, it’s time to check on the gas. Grab the installation manual, and follow the steps for clocking the meter.

It would be nice if you did, but you won’t have every installation manual handy when you need it. There’s help! Quickly find installation manuals, product specifications, user manuals, wiring diagrams and other product documents in the Document Library on and the LennoxPros app.

Ready to brush up on your furnace maintenance know-how? In this short online training from HVAC Learning Solutions, Furnace Practical Readings & Measurements, learn about practical readings and measurements in the inspection and maintenance of heating systems. The course qualifies for NATE continuing education credits.

Make sure you’ve got everything you need to deal with furnace issues.

Pro tip: Order online and get parts, supplies and equipment delivered to your job site. To save even more time, you can buy online and pickup in a Lennox PartsPlus store.

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