Winters along the Wasatch Front mean furnaces running for months at a stretch, water heaters working overtime, and homes sealed up tight against the cold. That same combination is exactly why carbon monoxide testing deserves real attention from homeowners in Salt Lake City, Sandy, Draper, and the surrounding valley. Carbon monoxide has no color, no smell, and no taste, which means the only way to know it is present is to actually test for it.
This kind of testing measures the concentration of this gas in a home’s air, giving occupants and buyers factual information about a hazard that no walkthrough or visual inspection could ever catch on its own.
Why Carbon Monoxide Testing Matters in Utah Homes
Fuel burning appliances are the primary source of concern here. Furnaces, water heaters, fireplaces, and gas ranges all produce carbon monoxide as a byproduct of combustion, and under normal conditions that gas is safely vented outside. Problems arise when a heat exchanger cracks, a vent becomes blocked, or a flue is improperly installed, allowing carbon monoxide to accumulate indoors instead of escaping.
The CDC notes that carbon monoxide poisoning kills hundreds of people in the United States every year and sends tens of thousands more to emergency departments, with symptoms often mistaken for the flu since they include headache, dizziness, and nausea. Winter months see a disproportionate share of these cases, largely due to increased furnace use and homes that are sealed tightly against the cold, a combination that describes most Wasatch Front homes for a significant part of the year.
What Carbon Monoxide Testing Involves
Carbon monoxide testing can take a couple of different forms depending on the purpose. A point in time test measures current levels using a calibrated meter, useful for confirming whether an immediate concern exists. Ongoing monitoring through installed detectors provides continuous protection, sounding an alarm the moment levels rise above a safe threshold.
During a home inspection, this process typically involves checking ambient levels near fuel burning appliances, in the areas surrounding attached garages, and throughout general living spaces. This gives a snapshot of whether appliances are venting properly and whether any existing detectors are correctly placed and functioning. Readings are also recorded near the furnace and water heater closets themselves, since a slow leak in these enclosed spaces can sometimes go unnoticed longer than one in open living areas.
Common Sources of Elevated Readings
A cracked heat exchanger in an aging furnace is one of the more serious sources this kind of testing can uncover, since it allows combustion gases to mix directly with the air being circulated through the home. Blocked or disconnected exhaust vents, whether from nesting animals, debris, or simple installation errors, are another frequent culprit.
Attached garages present their own risk. Idling vehicles, especially in a garage connected to living space, can allow carbon monoxide to migrate indoors through shared walls, door seals, or ductwork. Checking this area helps identify whether that pathway exists before it becomes a real problem.
Detectors Are Not a Substitute for Testing
Many homeowners assume that having a carbon monoxide detector installed is enough, but detectors and testing serve different purposes. A detector alerts you once levels reach a dangerous threshold. Checking conditions during an inspection identifies the underlying conditions that could lead to elevated levels in the first place, along with confirming that existing detectors are properly placed, functioning, and not past their recommended replacement date.
Frequently Asked Questions
How often should carbon monoxide testing be done on a home? It is commonly included as part of a standard home inspection, and homeowners should also test any time a fuel burning appliance is serviced, replaced, or shows signs of malfunction.
Is this the same as having a detector installed? No. A detector provides ongoing alarm protection, while testing during an inspection evaluates current conditions and identifies potential sources of concern.
Can this be done in homes without gas appliances? Yes, though the risk is generally lower. Attached garages and nearby sources from neighboring units can still introduce carbon monoxide even in an all electric home.
What should I do if this kind of testing finds elevated levels? Leave the area, ventilate the space if it can be done safely, and have a qualified technician inspect and service the fuel burning appliances and venting system before the space is reoccupied.
Know what is actually in your home’s air. Schedule Your Inspection with HouseHawk Inspections today.
HouseHawk Inspections provides Residential Inspections and more in Northern Utah, including Salt Lake City, Park City, Sandy, Draper, Heber, Cottonwood Heights, and Silver Summit.