FAQ Tag: furnace

What Should I Do If My Furnace Won’t Turn On?

If your furnace won’t turn on, check the thermostat, power supply, and air filter. If the system still doesn’t start, professional service is recommended.

What Is a Furnace Heat Exchanger, and Why Is It So Important?

A furnace heat exchanger safely transfers heat from combustion gases into the air that circulates through your home. A damaged heat exchanger can pose serious safety risks.

What Are the Most Common Furnace Problems, and When Do They Require Repair?

Common furnace problems include lack of heat, frequent cycling, unusual noises, weak airflow, and rising energy bills. These issues often require professional repair to restore safe and reliable operation.

How to Relight Your Pilot Light

To relight a pilot light, turn the gas control to OFF and wait five minutes, then set it to PILOT, press and hold the reset button, and ignite the flame with a long lighter or built-in igniter. Hold the button for 30–60 seconds so the thermocouple warms up. If the pilot light won’t light after two attempts, stop and call a professional.

How Often Should I Have My Furnace Serviced?

You should have your furnace serviced once a year. An annual tune-up keeps your system running efficiently, helps prevent mid-season breakdowns, and ensures all safety components are working properly. The best time to schedule furnace service is before colder weather arrives, so your system is ready when Austin and San Antonio finally cools down.

How Do I Know if My Heating System is Working?

Your furnace or heat pump should start quickly, warm each room evenly, and shut off once it reaches the set temperature – without unusual noises or smells. If your heater isn’t working or your furnace isn’t blowing hot air, Radiant Plumbing & Air Conditioning offers expert furnace troubleshooting to restore comfort and peace of mind.

How Often Should I Replace My Furnace Filter?

Most furnace filters should be replaced every 1 to 3 months, depending on filter type, system usage, and household conditions.

How Much Is a Furnace Tune-Up?

The cost of a furnace tune-up varies based on system type and condition, but it is generally a lower-cost service compared to repairs or emergency calls.

What Furnace Maintenance Can I Do Myself?

Homeowners can handle basic furnace maintenance like replacing air filters, keeping vents clear, and checking thermostat settings, while professional service is needed for internal components.

What Is a Furnace Tune-Up?

A furnace tune-up is a professional maintenance service that inspects, cleans, and tests key components to ensure safe and efficient operation.

How Long Does it Take to Install A Furnace?

Most furnace installations take about 4 to 8 hours to complete. The exact time depends on your home’s layout, the type of furnace, and whether upgrades like new ductwork, venting, or electrical adjustments are needed. At Radiant Plumbing and Air Conditioning, our licensed HVAC technicians plan each step carefully to finish your installation safely, efficiently, and on schedule.

What Is a Home Furnace?

A home furnace is a heating system that warms air and distributes it throughout the house using ductwork. Most furnaces run on natural gas, electricity, or propane.

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