Furnace repair in Spanish Fork when the heat quits or drops out

What furnace repair covers

Furnace repair in Spanish Fork covers a gas furnace that won't light or won't stay lit, or one that runs without warming the house. It also covers a furnace that still heats but has picked up a new noise or keeps shutting off early. You need it when the simple checks don't bring the heat back.

This site does no repair work. It's an information site with a phone line that connects callers with licensed, insured independent HVAC contractors. We connect you with a licensed, insured HVAC contractor.

An automated prompt may ask for your ZIP code and the service you need. It helps to have the furnace symptom ready, such as heat that comes in short bursts. Where a contractor is available, the line connects the call to that contractor, who then confirms availability and fees.

If the trouble is on the cooling side, AC repair in Spanish Fork has its own page. So does heat pump repair. When heating and cooling fail together, read about the parts both systems share.

How a furnace runs and where it fails

A gas furnace follows the same order every time it starts. The thermostat calls for heat, and a small inducer fan pulls air through the vent. A pressure switch confirms the vent is clear. Then the igniter gets hot, the gas valve opens and the burners light.

A flame sensor confirms the flame. Once the heat exchanger warms up, the blower pushes house air across it and out through the ducts.

If any step fails, the control board stops the sequence. That's a safety design, and it's why a furnace can look dead when only a small part has failed. These are the places the sequence can break down:

• An igniter can wear out and crack, and a dirty flame sensor can't read the flame, so the control board closes the gas.
• A clogged filter or a weak blower starves the furnace of air. The heat exchanger overheats and a limit switch shuts off the burners.
• A blocked vent or a failing inducer fan keeps the pressure switch from closing, so the burners never get the signal to light.
• Worn wiring or a failed control board can stop the sequence at any point.
• A cracked heat exchanger is the serious one. It's a sealed part that keeps combustion gases out of the house air, and a licensed contractor has to inspect it.

For more on a furnace that gives up in the cold, read why a furnace blows cold air or quits.

Safe checks before calling

These checks take no tools, and none of them touch the inside of the burner compartment.

• Make sure the thermostat is set to heat and set above the room temperature. Put in fresh batteries if it uses them.
• Pull the air filter and hold it up to a light. Change it if you can't see light through it.
• Find the furnace's power switch, which looks like a light switch on or beside the cabinet, and make sure it's on.
• Check the breaker and reset it once. If it trips again, leave it off.
• Make sure the lower panel door is fully seated, since many furnaces won't run with a door switch left open.
• Open any closed vents and clear furniture off the returns.
• If the furnace vents through a side wall, look for snow or ice over the pipes outside.

Stop there if the heat doesn't return. Gas burners and valves, electrical parts and wiring, and sealed components are work for a licensed contractor. For the filter routine, read how often to check the air filter.

If you smell gas or an alarm sounds

Some furnace problems stop being repair questions.

If you smell gas, leave the house, then call the gas utility from outside. If a carbon monoxide alarm sounds, get everyone out and call emergency services.

Don't stop to look for the leak or to restart the furnace. Both of those steps come before any furnace repair call.

What the contractor usually does on a visit

A licensed contractor usually starts by running the furnace through a heating cycle and watching where it stops. Many control boards flash a fault code, which narrows the search. From there, the contractor tests the suspect parts, such as the igniter, the flame sensor, the switches and the blower. The contractor also looks at the venting and the heat exchanger.

The next part is explaining what failed and what the options are, such as repair or replacement. Ask how the fault was found and how much life the rest of the furnace has left. For the full list, read what a contractor checks during a furnace repair.

House age doesn't tell you furnace age. About 25% of the 12,630 homes in Spanish Fork were built before 1980, and about 53% of the 12,630 homes were built in 2000 or later. Either way, the furnace may be newer or older than the walls around it, so ask the contractor to confirm its age.

If the talk turns to a new furnace, the repair or replace guide for older homes covers the choice. Spanish Fork City lists HVAC replacements among the common projects covered by a residential permit, so ask the contractor about that too. The overview of HVAC in Spanish Fork covers the wider system.

Spanish Fork cold and what it asks of a furnace

A furnace's workload follows the cold. The average December to February daily low at the NOAA weather station near Spanish Fork is 23.5°F, and the station averages 118 days a year with a low of 32°F or below. Each cold night asks for more ignition starts and longer blower runs. Those long runs are when a worn igniter or a clogged filter tends to show itself.

The same station averages 5,415 heating degree days a year (base 65°F). Heating degree days add up how far daily temperatures sit below that base, so a higher total means more furnace run time. The coldest checked night at the station fell to -20°F. On a night that cold, a furnace may run nearly nonstop and still lose ground.

A gas furnace also needs electricity for its igniter, controls and blower, so a power outage stops it too. Spanish Fork Power & Light provides electric service to homes and businesses in Spanish Fork. Enbridge Gas lists Spanish Fork on its construction contacts page for gas lines and new service. Ask the contractor about that if a furnace job means changing a gas line.

Routine care that heads off these faults

A clogged filter can start an airflow fault. Checking the filter often during the heating season is a simple habit, and you change it whenever it looks clogged. Keep vents and returns open while you're at it, because closed registers cut the air the furnace needs.

The contractor advises how often the furnace needs a tune-up. A licensed contractor cleans the burners and flame sensor, checks the igniter, tests the safety switches and looks over the venting. That work catches a dirty sensor or a worn part while the furnace still runs. The spring and fall HVAC checklist sets out the seasonal routine.

What changes the size of a furnace repair

No two furnace faults are the same size. These things make the job larger or smaller:

• Which part failed matters most. A flame sensor is a small part, while a blower motor or control board is a bigger job, and a heat exchanger is bigger still.
• How easy the furnace is to reach changes the work. A tight closet, a crawl space or an attic takes longer than an open basement.
• The age and type of the furnace play a part. Parts for older models can be harder to find, and high-efficiency furnaces have more controls and venting to check.
• Work the visit turns up can add to the job, such as damaged wiring, a blocked vent or a failing inducer fan.
• A repeat fault can widen the scope, because the part that keeps failing may not be the root cause.

Each independent contractor confirms its own fees.