Winter Furnace Prep — Sacramento Homeowner Checklist
Sacramento winters can drop to 28 degrees. A furnace that sat idle all summer may have a cracked heat exchanger or a failing igniter. Fresh Air runs a fall check before first use.
Sacramento winters are mild compared to the mountains. But December and January nights drop into the high 20s. A furnace that sat idle all summer needs a check before you rely on it. Cracks, weak igniters, and dirty burners are common after months of no use. Fresh Air has serviced heating units across Sacramento since 2009. We run a furnace check in every fall visit.
A cracked heat exchanger lets combustion gases into your living space. That includes carbon monoxide. Cracks are not visible in early stages. A licensed tech uses a camera or pressure test to check it before the first heat cycle.
Modern furnaces use electric igniters. These weaken over time. They often fail on the first cold startup after months of no use. A fall check catches a weak igniter before you are left without heat.
The switch from cooling to heating season is the right time for a fresh filter. A dirty filter cuts airflow. It makes your furnace run longer and raises your bill.
A cracked heat exchanger is the most serious furnace safety issue. Most homeowners miss it. The exchanger keeps combustion gases away from your air. When it cracks, CO can mix with heated air. CO has no color and no smell. A working CO detector and an annual check are the only ways to catch it.
Sacramento furnaces run hard from December through February. Then they sit idle from April through October. Heat exchangers develop stress cracks over time. Older 80-percent furnaces crack more than newer 96-percent units. Fresh Air checks heat exchangers at every fall service call. We have done 900-plus units in Sacramento since 2009.
September or October is the right time. Get the check done before nights drop below 40 degrees. That leaves time to fix any issues before the cold sets in.
Signs include a yellow or flickering flame, a soot smell, or a CO alarm. Small cracks have no visible signs. Annual checks are the only reliable way to find them.
Well-kept gas furnaces last 18 to 25 years. Sacramento's long idle summers cut wear vs. colder climates. But heat and cool cycles still add stress. Furnaces over 20 years old should be checked each year.
Fresh Air serves Sacramento, Elk Grove, Roseville, Folsom, and nearby areas. Call (916) 416-8181 or visit /contact/ to book your fall furnace check.