--- title: "Flame Sensor Cleaning Bowie MD - Quick Fix | Pentagon Air" description: "Flame sensor cleaning in Bowie, MD. Quick, affordable fix for a furnace that starts then shuts off. Prompt service. Call (240) 338-0049." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Service", "name": "Flame Sensor Cleaning in Bowie, MD | Quick Fix, Big Difference", "description": "Flame sensor cleaning in Bowie, MD. Quick, affordable fix for a furnace that starts then shuts off. Prompt service. 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A dirty flame sensor is the most likely cause. [Call Now (240) 338-0049](tel:+12403380049)[Schedule Service](/contact) Fully Insured Prompt Response Free Estimates Upfront Pricing This is the repair that saves Bowie homeowners the most money. because another company might tell you that you need a new furnace when all you actually need is a 30-minute sensor cleaning. Your furnace lights up, runs for a few seconds, then shuts off. It tries again. Same thing. After three or four attempts, it locks out and you're cold. The flame sensor is coated with carbon buildup and can't detect the flame, so the safety system shuts off the gas. Pentagon Air cleans flame sensors across Bowie quickly and affordably. ## When You Need Flame Sensor Cleaning The classic symptom: furnace ignites, runs for 3 to 10 seconds, then shuts off. It repeats this cycle until it locks out. The flame sensor is a small metal rod that sits in the burner flame and tells the control board that the gas is actually burning. When carbon builds up on the rod. which happens naturally over time. it can't sense the flame and triggers a safety shutdown. This is a quick fix that doesn't require replacing any parts. ## Our Flame Sensor Cleaning Process We remove the flame sensor from the burner assembly, clean it with fine abrasive to remove the carbon buildup, reinstall it, and test the furnace through several heating cycles. We verify the sensor is reading properly and the furnace stays lit reliably. The entire process takes about 30 minutes. If the sensor is cracked or corroded beyond cleaning, we replace it. but that's rare. ## Flame Sensor Cleaning Cost in Bowie This is one of the least expensive furnace repairs we do. We quote upfront. no hidden fees. If another company told you that you need a new furnace or a $500 repair for this symptom, call us for a second opinion. There's a good chance it's a $100 flame sensor cleaning. ## Why Choose Us Pentagon Air handles flame sensor cleaning quickly, honestly, and affordably. We won't tell you that your 8-year-old furnace needs to be replaced when all it needs is a simple cleaning. That's not how we do business. Honest service, licensed technicians. We've cleaned hundreds of flame sensors in Bowie homes. [Back to Furnace Repair Service](/furnace-repair-service-bowie-md) Furnace starting and stopping? Call Pentagon Air at (240) 338-0049. It's probably a flame sensor. quick and affordable to fix. [Call (240) 338-0049](tel:+12403380049)[Schedule Online](/contact) ![Pentagon Air heating and air conditioning logo](/assets/logo-light-CWbp1lkE.webp) Maryland Licensed & Insured · Factory-Trained on 8 Major Brands [(240) 338-0049](tel:+12403380049)[info@pentagonair.com](mailto:info@pentagonair.com) 14410 Dolbrook Ln, Bowie, MD 20721 Open 7am - 6pm Monday-Friday ### Quick Links - [Home](/) - [Services](/services) - [About Us](/about) - [Contact](/contact) - [AC Repair Costs Guide](/blog/ac-repair-bowie-md-local-costs-fixes-what-to-expect) - [Bowie AC Repair Blog](/blog/ac-repair-bowie-md) ### Services - [AC Repair](/ac-repair-bowie-md) - [AC Installation](/ac-installation-bowie-md) - [Furnace Repair](/furnace-repair-service-bowie-md) - [Heat Pump Services](/heat-pump-services-bowie-md) - [HVAC Maintenance](/hvac-contractor-bowie-md) - [Thermostat Installation](/thermostat-installation-bowie-md) ### Service Areas - [Bowie, MD](/hvac-ac-repair-bowie-md) - [Laurel, MD](/hvac-ac-repair-laurel-md) - [Silver Spring, MD](/hvac-ac-repair-silver-spring-md) - [Upper Marlboro, MD](/hvac-ac-repair-upper-marlboro-md) - [Annapolis, MD](/hvac-ac-repair-annapolis-md) - [Waldorf, MD](/hvac-ac-repair-waldorf-md) [](#)[](#) © 2026 Pentagon Air. 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