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Urgent Furnace Inspection Issues We Resolve

A proper furnace inspection covers every component that affects safety, reliability, and efficiency. Here are the key issues we find and address during each visit.

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Cracked Heat Exchanger Found

A cracked heat exchanger allows combustion gases, including carbon monoxide, to mix with the air circulating through your home's ductwork. The crack is often too small to see without a proper inspection and does not produce obvious symptoms early on. We visually inspect the heat exchanger and test for combustion gas presence during every furnace inspection to catch this before it becomes a serious safety risk.

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Furnace Flame Sensor Needs Cleaning

A flame sensor coated in residue cannot confirm to the control board that the burner is running, which causes the furnace to shut off after a few seconds and eventually lock out. This is one of the most common causes of a furnace that fires briefly and then stops heating. We test and clean the flame sensor during every inspection and replace it when the condition warrants.

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Flue Vent Blocked or Disconnected

A blocked, disconnected, or incorrectly pitched flue pipe can prevent the furnace from exhausting combustion gases safely, causing back-drafting or automatic safety shutdowns. Animals nesting in exterior vent terminations, shifted PVC joints, and debris accumulation are common causes. We inspect the full venting path from the furnace cabinet to the exterior termination as part of every inspection.

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Furnace Filter Severely Restricted

A filter clogged beyond its rated capacity forces the furnace to work harder, raises the heat exchanger temperature above design limits, and causes the limit switch to trip and short cycle the system. Over time, repeated overheating accelerates heat exchanger wear. We assess filter condition during every inspection and confirm that airflow through the system is within the required range.

Furnace Ignitor Failing Intermittently

Hot surface ignitors degrade gradually and can pass a basic visual check while still being close to failure. A weak ignitor produces a flame on some startup attempts but fails on others, causing inconsistent heating that worsens until the ignitor fails completely. We test ignitor resistance during the inspection to catch components approaching failure before they cause a breakdown.

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Carbon Monoxide Detected at the Furnace

Carbon monoxide can be present in a home's heating air supply at levels too low to trigger a detector alarm but high enough to cause symptoms over time. A CO screening during furnace inspection checks for presence at the furnace cabinet, flue connections, and supply registers to catch combustion gas pathways that should not exist. Finding CO during an inspection is a safety intervention, not a routine finding.

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Furnace Locking Out or Showing Error Codes

Control boards store fault codes that can point to recurring problems even when the furnace appears to be running normally between events. Limit switches and pressure switches that are borderline may allow normal operation most of the time while creating intermittent failures under heavy load. We read stored fault codes and test each safety switch under operating conditions during inspection to catch these patterns.

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Furnace Not Inspected in Over a Year

A furnace that has gone more than a year without a professional inspection may have developed ignitor degradation, heat exchanger fatigue, or vent obstruction that is invisible during normal operation. The risk of a mid-season breakdown or carbon monoxide issue increases with each season skipped. We provide documented findings after every inspection so homeowners have a clear record of system condition.

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Yellow or Flickering Furnace Flame

A healthy gas furnace burner should produce a steady blue flame. A yellow, orange, or flickering flame indicates incomplete combustion, which increases carbon monoxide production and reduces heating efficiency. The cause is usually dirty burner ports, low gas pressure, or an air-to-fuel ratio problem. We clean the burners, verify combustion air supply, and check gas pressure to restore a correct, stable flame.

Reviews

What Our Customers Say

★★★★★

Caught a cracked heat exchanger before winter

The technician found a hairline crack in the heat exchanger during our fall inspection. We had no idea and the furnace seemed to be working fine. Getting it replaced before the heating season started was a relief. Would not have known without the inspection.

★★★★★

Thorough, professional, no pressure

Booked a furnace inspection before the cold season and was impressed with how methodical the technician was. He checked everything, explained what he found in plain terms, and was upfront that nothing critical needed immediate attention. Honest service is hard to find.

★★★★☆

Good inspection, had to wait a week to book

Scheduling in January was a bit slow due to demand, but once the technician arrived the inspection was detailed and informative. He flagged the ignitor as showing wear and we replaced it on the spot. Worth doing even mid-season if you have not had one recently.

★★★★★

Best money spent before winter

Winnipeg Service Pros did our annual inspection and found a loose flue connection that was creating a small back-drafting issue. It was an easy fix but not something we would ever have noticed on our own. Our heating bills have been lower this season compared to last year.

★★★★★

Proactive and informative from start to finish

Scheduled our inspection early in September before the rush. The technician walked through every single check with me and explained what each component does and why it matters. He cleaned the flame sensor and tested the gas pressure while he was there. Felt like genuine service, not a quick checkup.

★★★★☆

Solid inspection, learned a lot about my furnace

I had avoided scheduling this for years because I assumed it was unnecessary. The technician found a filter so clogged it had been causing the limit switch to trip and short cycle the furnace all season. Replacing it and having the system cleaned made an immediate difference in how evenly the home heats.

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From gas furnaces and fireplaces to pool heaters and tankless water heaters, our certified technicians keep your home safe, warm, and running right.

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