Tempstar Furnace Parts

Tempstar Furnace Parts for Reliable Winter Heat

Tempstar furnaces are built to last, but when they need repair, getting genuine OEM parts keeps them running safely and efficiently. Whether your Tempstar won't ignite, your blower has stopped, or you're seeing error codes, Repair Clinic carries the exact parts your model needs. From hot surface igniters and inducer motors to pressure switches and control boards, we stock the parts that make Tempstar furnaces work.

Finding the right part starts with your model number — it's printed on the rating plate inside your furnace cabinet or on the outdoor unit if you have a split system. Enter it above to see parts that fit your specific Tempstar model and get same-day shipping on most orders.

• Hot surface igniter glows but furnace shuts down immediately: Silicon carbide or silicon nitride igniter failure — verify igniter type for your model
• Furnace runs but produces no heat: Gas valve, limit switch, or heating element issue — pressure switch ruling out airflow first
• Won't start or pressure switch keeps tripping: Draft inducer motor failure or blocked drain line — inducer assembly includes wheel and housing
• Furnace cycles on and off rapidly: Flame sensor needs cleaning or replacement — try fine steel wool first, then replace if still failing
• Error codes on display or LED blink pattern: Main control board (IFC) needs replacement — OEM board is model-specific and may need programming

Tempstar Furnace Repair FAQs

Why does my Tempstar furnace igniter glow orange but the burner won't light?

The igniter is weakening. Tempstar furnaces use either silicon carbide (SiC) or silicon nitride (SiN) igniters depending on the model — they look similar but they're not interchangeable. When the igniter reaches the right temperature, it should trigger the gas valve to open. If it glows but the valve doesn't open, the igniter is losing power. Once you confirm which type your model uses, an OEM replacement igniter (usually $30 to $60) will restore ignition. Always verify the igniter type in your manual or by entering your model number — using the wrong type will cause the same failure.

How do I find my Tempstar furnace model number?

The model number is stamped on a metal rating plate inside your furnace cabinet — look near the blower compartment or along the side wall. It usually starts with a letter or two followed by numbers (like TM8 or TP9). You can also check outside on the condensing unit if yours is a split system. Once you have it, enter it in the search box at the top of this page and Repair Clinic will show you every part that fits, including igniters, motors, switches, and boards. If you can't find the plate, a photo of the furnace from the front usually shows enough detail for our parts specialists to help.

What's the difference between a pressure switch and a limit switch in a Tempstar furnace?

The pressure switch monitors airflow — it won't let the furnace start until air is flowing properly through the heat exchanger. The limit switch is a safety device that shuts the furnace off if it gets too hot. If your furnace won't start, the pressure switch is usually the culprit (or the inducer motor that triggers it). If your furnace keeps shutting off during the heating cycle, the limit switch may be failing or there's a genuine airflow problem. Start by checking your filter and ductwork for blockages — a clogged filter or blocked return air will trip the pressure switch and make you think it's broken when it's actually working correctly.

Tempstar furnace control board showing error codes — is it worth replacing?

Yes, if the error code is pointing to the board itself. Tempstar uses OEM boards from Lennox and other manufacturers — these are model-specific and pre-programmed for your furnace. Error codes like lockouts, ignition failures, or flame sensor faults sometimes point to the board, but often they're symptoms of a bad igniter, sensor, or gas valve. Use your model number to find the exact board and error code chart — that will tell you whether the board is the root cause or if there's a sensor/part issue first. OEM boards are $150 to $300, but they're a primary reliable fix once you've confirmed the board is the problem.

Order Tempstar Furnace Replacement Parts Online

Ordering Tempstar furnace replacement parts online is quick and easy with Repair Clinic. You can search by model or part number to find the exact parts you need. Whether you need a Tempstar furnace control board, Tempstar heat exchanger, or any other replacement part, we have you covered. Our extensive inventory of genuine Tempstar parts ensures you'll find what you're looking for in no time.

Benefit from our No-Hassle 365-Day Returns, which allows you to return uninstalled parts within a year of purchase. Our Price Match Guarantee ensures that you get competitive pricing on OEM Tempstar furnace parts, supported by model-number lookup and return options when making your purchase.

We offer same-day shipping on orders placed by 9:00 PM ET, so you can get the Tempstar furnace parts you need promptly. Whether you're a homeowner or a professional technician, Our online repair library provides the videos, guides, and diagrams to support the repair.

Tempstar Furnace Model Number: Where to Look

On Tempstar furnaces, look for the model number on the rating plate attached to the blower compartment door or along the cabinet's inside side wall. Turn off power to the furnace before opening an access panel, and copy the complete model number, including every letter and number. The plate may also list the serial number, so make sure you select the model number. Punch it into the search bar to sort the catalog down to your model's parts. This filters the full Tempstar furnace parts selection for your specific unit, including controls, motors, igniters, switches, and other parts. That means fewer wrong orders and a faster repair.