Gas Furnace Repair

Gas furnace repair in Los Angeles, California, to ensure your warm comfort isn’t compromised!

Gas furnace issues aren’t exactly any homeowner’s favorite topic. Yet, even the top-notch gas furnaces don’t last a lifetime. As your heating system ages, the likelihood of needing gas furnace repairs or replacements increases. Over time, the system begins to wear out and eventually requires more attention.

So, what signals trouble? Inconsistent room temperatures, soaring utility bills, weak or low airflow, odd sounds and smells and more. If you notice these, it might be a signal to dial up your nearest HVAC professional for some furnace parts repair. But before you call for the experts, give these DIY troubleshooting tips a shot. You might crack the code on a fix, have some helpful information, or a story to share with the HVAC technician.

As you navigate the furnace door or blower, remember that just because your furnace is old doesn’t mean it’s damaged. We’ve got some tricks up our sleeve to help extend your furnace’s life. Think of it as a step-by-step guide to keep your furnace dancing to your tune a little longer. Check it out and see if you can delay the inevitable repair bill – your wallet will thank you!

So let’s dive into the process!

How do forced-air furnaces work?

No matter what furnace you have, be it conventional or high efficiency, gas or electric, it functions in the following way:

• Inhales or absorbs cold air.
• The air filter cleans the air.
• Air is then heated up with a gas burner with the help of a steel heat exchanger.
• Then, the blower motor distributes the heated air throughout the ductwork of your home.

The heated air is distributed, cools down as it spreads, and returns to the furnace through the ductwork and air grills. The cold air enters the air filter and is heated in the stove. 

Conventional furnaces are compact and straightforward in structure and design, but things may sometimes need to be fixed. Here are some problems you might encounter with a traditional gas furnace.

You may also want read how a heat pump works in comparison to gas furnaces.

What can cause a furnace to stop working?

Furnaces can stop working for various reasons, and while some problems can be resolved with simple at-home steps, others might need professional assistance and guidance. With some DIY know-how, you can fix everyday problems like thermostat glitches or clogged air filters. However, if the problem persists, you might need a gas furnace repair.

Additionally, by closely examining crucial furnace components, you can troubleshoot and resolve issues independently, eliminating the need for a professional consultation.

Problems with Gas furnaces

Here are some of the problems with gas furnaces:

No heat or insufficient heat

When chilly weather arrives, ensure your furnace is in good working order to keep your home warm and cozy. If it suddenly stops producing heat or blows cool air, there could be several reasons, such as an issue with the gas line or other causes. Some problems might be fixable independently, while others may need a professional touch. Quick solutions include:

1. Ensure heat registers are open.
2. Double-checking thermostat settings.
3. Confirm that the furnace has power.

These simple steps could get your warm home back on track without needing a professional.

Dealing with dirty air filters

The central problems with gas furnaces often begin with clogged air filters. Before swapping or replacing your filter, purchase a replacement that fits appropriately. Once you have the right one, power off your furnace, replace the old filter with the new one, and switch the stove back on.

Remember to check and change filters every few months to keep things running smoothly.

The furnace frequently cycles on and off

To save on energy expenses and protect your furnace from damage, be aware of a gas furnace that frequently turns on and off, a condition known as “short cycling.”

It might be expected during freezing weather, but otherwise, it could indicate an issue with your furnace. Explore potential causes such as a dirty filter, a clogged exhaust vent, or a malfunctioning thermostat. Identifying and fixing these issues can ensure your furnace operates efficiently.

Blower motor running constantly

If your furnace blower seems to be running nonstop, consider two likely reasons:

1. Thermostat Fan Setting: Verify that the thermostat and fan settings are correct. While it may be intentional, such as for warm air filtration or dehumidification, it usually just strains the blower motor. The fix? Set the blower back to AUTO on the thermostat, ensuring it runs only when the system is heating or cooling.
2. Faulty Fan Limit Control Switch: Another potential culprit could be a malfunctioning fan limit control switch—a safety device that monitors the furnace temperature. If the blower runs constantly, the switch might be on the fritz. Try resetting it, or if it’s damaged, consider replacing it to keep your furnace working smoothly.

Furnace is noisy

Unusual noises from your furnace often indicate an underlying issue that could lead to costly repairs if left unaddressed. Whether it’s loud banging, high-pitched squealing, or a low hum, addressing the problem promptly is the key. While you might be able to fix some issues on your own, bringing in a professional quickly could save you money in the long run.

Quick DIY fixes include replacing the filter, as a clog may be causing the noise, and lubricating the blower motor with oil for smoother operation.

Thermostat & circuit breaker issues

A faulty thermostat or a blown fuse in your circuit breaker can stop the heat flow from your furnace. Check if your thermostat requires batteries and ensure they are still functioning correctly.

If the batteries are dying or already dead, the thermostat might send weird, conflicting signals to the furnace, leading to malfunctions or even breakdowns.

If you suspect the furnace lost power from the circuit breaker, reset it by turning it off and back on. This action will reset the panel and potentially restore power to your furnace.

Pilot light is out

The standing pilot light may stop working in older furnaces due to a strong draft, a dirty pilot burner, or dirt in the gas tube. Another potential cause could be a faulty thermocouple, which may cause the gas supply to shut off.

The pilot light going out is a common reason for a gas furnace not producing heat.

The good news is that relighting the pilot light is a straightforward process. Additionally, replacing a faulty thermocouple is also a simple task.

The electronic ignition is failing

Modern conventional furnaces no longer rely on a standing pilot to kickstart the gas burners; instead, they employ electronic components. Electronic ignition operates in two main ways: intermittent pilot or hot-surface ignition.

The intermittent pilot system uses a controlled high-voltage spark to ignite the gas pilot, which then lights the main burners in response to a heat request from the thermostat. Meanwhile, a hot-surface ignition system utilizes an electronically controlled heating element to ignite the gas burner, similar to a light bulb filament.

If your furnace, equipped with electronic ignition, encounters issues, you might experience insufficient heat, frequent cycling, or an overly active blower. Luckily, you can tackle some electronic ignition problems on your own.

Simple steps, such as changing the filter and ensuring the power and gas lines to your furnace are intact, could solve the issue, and you won’t need to look for gas furnace repair.

If these remedies fall short, it is advisable to seek professional assistance.

Thermostat and furnace mismatch

A correct match between your furnaces and thermostats must exist for your system to function correctly. Using the wrong type of thermostat with a furnace can lead to operational issues.

For instance, your furnace might sometimes overheat or underheat your home, regardless of your thermostat settings. Today, three thermostat systems are commonly used: millivolt, low-voltage, and line-voltage. It’s crucial to ensure that you have installed the correct type of thermostat for your specific furnace.

The thermostat is faulty

Your furnace may exhibit common issues associated with a malfunctioning thermostat.

After eliminating standard furnace causes, such as a dirty filter, focus on the thermostat. Thermostat issues can result in a furnace producing no heat, experiencing erratic temperature changes, or cycling on and off frequently.

Ensure the thermostat has power and that its components are free from dust and debris. If issues persist, it’s advisable to seek professional assistance.

Abnormal furnace smell from the gas valve

If you smell gas or burning odors from your furnace, it’s a crucial sign that you need immediate gas furnace repair. Don’t ignore unusual smells, as a malfunctioning furnace can be dangerous. Act promptly and immediately contact a local furnace company or an HVAC contractor to resolve the issue.

Simple fixes if your furnace is not working properly

If your furnace isn’t working, try these eight simple solutions before you spend thousands of bucks and wait for the repair technician to show up.

Gas furnace repair fix #1: Check the thermostat

Before assuming your furnace has a problem, troubleshoot by checking the thermostat to ensure it’s instructing the furnace to turn on. Thermostats, especially programmable ones, can be tricky, and more options mean more chances for issues.

1. Confirm that the furnace switch is “Heat,” not “Cool.”
2. Check the temperature setting.
3. Compare it to the room temperature, setting it five degrees higher to test if the furnace starts.
4. Verify the program displays the correct day, time, and a.m./ p.m. settings.
5. Trace thermostat wires to the furnace for breaks, especially after remodeling. If found, splice and tape them.
6. Replace the battery to avoid losing settings during power outages.
7. Blow out dust from the thermostat, ensure it’s level on the wall, and check for loose wires.
8. If program settings are problematic, bypass them. Set the desired temperature using the up/down control and press the hold button to activate the furnace.

If you’re unable to resolve the issue using these troubleshooting tips, consider it a sign to contact professional HVAC technicians for thermostat repair.

Gas furnace repair fix #2: Check the breaker and shut off the switches

It might seem surprising, but furnace technicians frequently discover that switching it on is the only “fix” a furnace requires. Look for a regular wall furnace power switch—they all have one, regardless of age or type.

Also, inspect the circuit breaker or fuse for the furnace. Ensure the front panel covering the blower motor is correctly and firmly attached—a push-in switch below it that must be fully pressed for the furnace to work.

Gas furnace repair fix #3: Change the filter

A clogged furnace filter can cause the furnace to shut off, making it a common source of problems. Dust and dirt in the filter restrict airflow, and if it becomes too blocked, the heat exchanger can overheat and shut down prematurely, preventing your house from warming up. If the blower works but no heat comes out, you must replace the filter immediately. A dirty or clogged filter also causes soot buildup on the heat exchanger, reducing the furnace’s efficiency and lifespan.

Refer to the owner’s manual for the filter’s location and removal instructions. Change the flat filters at least once a month, ensuring the arrow on the filter points toward the furnace. Since the flat filters aren’t expensive, you can easily replace them every month. Inspect pleated filters monthly; if you can’t see the light clearly through them, replace them. Manufacturers recommend changing pleated filters every three months, but more frequently in areas with high dust levels, such as those with pets or children.

Always turn off the shut-off switch and lower or turn off the thermostat before changing the filter or working on the thermostat or furnace.

Gas furnace repair fix #4: Make sure the gas is on

Is your gas furnace not producing heat? Like switches, someone might have turned off a gas valve and forgotten to switch it on again. Stretch the gas line from the furnace to the meter, and if you spot a handle that is horizontal to the gas pipe, turn it vertically.

The repair of a gas furnace depends on its age. You may have a pilot light if your furnace or boiler is older. Remove the front panel and cover of the burner to ensure it’s lit.

Gas furnace repair fix #5: Make sure the chimney exhaust flue is clear

Because of the warmth of the chimney exhaust flue, birds sometimes sit near it and end up in it. Therefore, it’s better to turn off the furnace and lower the thermostat setting. Disassemble the duct where it leaves the furnace to check for debris. Remember to put the sections back in the same order and direction as you removed them.

Gas furnace repair fix #6: Flush out drain lines

High-efficiency furnaces can produce several gallons of water daily during the heating season.

The furnace can shut down if sediment or mold growth blocks the drain lines. If the drain hose appears dirty, remove it, fill it with a mixture of bleach and water (25 percent bleach), and flush it after a few minutes.

Gas furnace repair fix #7: Look for blocked or leaky ducts

If your furnace is running, but some rooms stay cold, ensure all room registers are open. Inspect accessible ductwork for gaps between sections or at branching points. Seal any gaps using special metal duct tape; avoid standard cloth duct tape as it deteriorates quickly and may cause leaks if used before.

Look for handles on the ductwork—these are dampers or air conditioner bypasses, so make sure they’re open.

Gas furnace repair fix #8: Clean leaves and debris from intake and exhaust vents

For a furnace venting outside the house, ensure that nothing blocks the intake or exhaust. If either pipe has screen mesh (like a window screen), replace it with a 1/2-inch mesh.-mesh hardware cloth. The system might have a more significant issue if ice blocks a pipe. Clear it and call a technician to investigate.

Remove grass and leaves from the outdoor compressor unit’s fins for a heat pump. Before the heating season, gently hose the unit from top to bottom to wash away dirt and debris from the housing.

How much does an average furnace repair cost in 2023?

Fixing a furnace can cost anywhere from $150 to $300, depending on the specific repair needed; however, minor fixes typically start at $50, while more extensive repairs can exceed $1,200. Gas and propane furnaces usually cost more to service than electric ones. (1)

Your furnace is a significant and vital part of your home. It keeps you warm, prevents your pipes from freezing, and maintains a comfortable environment throughout the year. It helps prevent issues like mold and mildew. However, just like anything else, furnaces require regular maintenance and occasional repairs to function correctly.

However, emergency furnace repair costs a little more. When your furnace suddenly stops working, fixing it swiftly is crucial. Emergency furnace repairs can be pricey, depending on the seriousness of the problem. Simple fixes, such as replacing a part, cost around $300, while more complicated repairs, like changing the furnace motor, can range from $1,200 to $ 1,500. Remember to factor in extra costs for faster service. So, if you need furnace repair services, RLD services if you go to space.

Furnace repair services in Los Angeles by RLD Heating & Cooling services

Has your furnace started failing, or do you feel that your furnace needs immediate repair services, and you need help finding the right experts? Worry no more. At RLD Heating and Cooling Services, we cover all your heating installation, repair, replacement and servicing needs.

Our technicians are NATE-certified, and we offer 24-hour services throughout Los Angeles. For a free estimate or inquiries about our services, please contact us for an immediate response.

FAQs

Here are some of the questions people usually ask:

Gas furnace repair FAQ #1: What are the most common furnace repairs?

Here are some of the common furnace problems people usually face:

• Altering filters
• Cleaning dirty ductwork
• Repairing the blower component
• Replacing the heat exchanger
• Repairing a noisy furnace
• Fixing the smelly furnace and more.

Gas furnace repair FAQ #2: What is a common failure for a furnace?

If your furnace has a broken or damaged ignition system, it’s like the spark plug in a car not working. Without a working ignition, your furnace can’t make the hot air that warms your home. It’s like trying to start an automobile without a key – the furnace won’t kick into action. When the ignition is damaged, the burners will not turn on, causing the furnace to remain off. However, to resolve this issue, you may need a technician to repair or replace the ignition system, allowing your furnace to function properly again.

Gas furnace repair FAQ #3: How do you service a gas furnace?

To maintain your furnace:

1. Turn it off and remove the chamber door.
2. Check that the burner flames are steady and blue.
3. Use a vacuum to clean the burner and blower compartments.
4. Remove and clean the blower for improved efficiency.
5. Change the furnace filter to improve air quality.
6. Blow the dust off the pilot light and clean the flame sensor.
7. Inspect the drive belt for wear or damage.

Following these steps keeps your furnace running smoothly and your home warm. If in doubt, get professional help.

Gas furnace repair FAQ #4: Why is my gas furnace not working?

If your heater won’t start, start by checking the filter. If it’s dirty, the heater might not get enough air.

Other reasons could be that the thermostat is not set correctly, the gas is not turned on, or there is a problem with the pilot light. It’s like ensuring your car has gas and the keys are in before starting it.

So, these are just simple things to look at before calling for help.

Sources:

1. https://www.forbes.com/home-improvement/hvac/cost-to-repair-furnace/