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What’s the Difference Between a Furnace and a Boiler?

January 7, 2025
In order to get the service you really need for your heating system, it’s important to know the proper terminology. When your heater needs repairs or if you are shopping around for a new one, you should be able to identify whether you are thinking of a boiler or a furnace. Don’t worry; it’s not uncommon to confuse the two. Sometimes, you get so used to hearing one term or the other, the differences may not occur to you. Or, you may move from a relatively warm climate to somewhere homeowners have all kinds of different systems in place. We are here to help. Below, we describe the differences between a furnace (the most common heating system in the US) and a boiler (only common in cold areas like ours). Be sure to call our team when you need furnace or boiler services in Jerome, ID!

Furnaces Heat Up the Air
Boilers and furnaces start up in a similar way. They use natural gas or another type of heating oil for combustion. When the fuel ignites, a flame provides the heat necessary to keep the system going. But the combustion process is where the similarities end.

A furnace’s heat exchanger warms up as heat is produced during the combustion process. A blower fan near the furnace sucks in air from around your home through a register and past a filter. Then, the air moves over the heat exchanger.
The blower fan then pushes the air through a duct system. And that is how warm air reaches the rooms of your home.

Boilers Use Hydronic Heating
Boilers do not work by blowing hot air into a room. Instead, a boiler uses combustion to heat a tank full of water. Hot water circulates through the home via a network of pipes. This means either a piping system intricately laid out in the walls or the floors, or you may have a radiator or baseboard as an endpoint.
The heat from the water transfers directly to the objects and people in the room. This is called hydronic heating. This direct heat transfer is much different from forced-air heating (a furnace). But is it the best choice?

Which Is the Better System?
People who have boilers emphasize a lot of points when they say they will never go back to have a furnace to heat the home. What do homeowners love about their boilers?
•    Hydronic (water-based) heat transfer is effective and efficient. It simply does not compare to heating the air in a home.
•    Today’s boilers are more efficient than they’ve ever been. The misconception that boilers may be inefficient for heating a home comes largely from people’s perceptions of older boilers.
•    Boilers have a long lifespan and are unlikely to break down often.

However, furnaces still have their merits. That’s why it’s usually best to consult with a technician before making any big decision about your heating system. Furnaces are less costly to install, and many homes are already set up for them. Call our team for more information and we will be happy to help with the entire installation process.

Evans Plumbing Inc installs and services boilers and furnaces in Jerome, ID. Call our team to learn more!
What’s the Difference Between a Furnace and a Boiler?
By 7011748352 February 20, 2025
When winter hits Hailey, Idaho, your furnace works overtime to keep your home warm and comfortable. But did you know that one of the easiest ways to maintain your heating system’s efficiency is by regularly changing the furnace filter? Many homeowners overlook this simple task, leading to increased energy costs, poor indoor air quality, and potential damage to their HVAC system. So, how often should you change your furnace filter? Let’s break it down. Why Changing Your Furnace Filter Matters Your furnace filter traps dust, pet dander, pollen, and other airborne particles, preventing them from circulating through your home. A clean filter ensures proper airflow, reduces strain on your furnace, and improves indoor air quality. Neglecting this maintenance step can cause your system to work harder, leading to higher energy bills and potential breakdowns. How Often Should You Change It? The answer depends on several factors, including filter type, household conditions, and how often you use your furnace. Here’s a general guideline: Basic fiberglass filters: Every 30 days Pleated filters: Every 60–90 days High-efficiency HEPA filters: Every 6–12 months Homes with pets: Every 30–60 days Allergy sufferers: Every 30 days Heavy furnace usage (winter months): Every 30–45 days If your home has multiple occupants, pets, or someone with allergies, it’s best to check the filter monthly and replace it as needed. Signs Your Furnace Filter Needs Replacing Even if you follow a set schedule, your furnace may give you signals that the filter needs to be changed sooner. Look for these signs: Increased Dust in Your Home – If you notice more dust accumulating, your filter may be too clogged to trap particles efficiently. Reduced Airflow – A clogged filter restricts airflow, making your system less effective at heating your home. Higher Energy Bills – If your heating costs are rising without a temperature change, a dirty filter may be making your furnace work harder. Strange Furnace Noises – A struggling system may produce unusual sounds, signaling it’s time for maintenance. Visible Dirt and Debris on the Filter – If your filter looks clogged, it's time to replace it. The Bottom Line Regularly replacing your furnace filter is a simple yet crucial step in maintaining your heating system’s efficiency and prolonging its lifespan. Not only will this improve your indoor air quality, but it will also keep your energy bills in check and prevent costly repairs. Need HVAC Maintenance? Call the Experts! If you’re unsure about your furnace’s condition or need professional maintenance, Evans Plumbing, Heating, and Mechanical is here to help.
By 7011748352 February 20, 2025
As temperatures drop in Hailey, Idaho, your furnace is working hard to keep your home warm. But what happens when you start hearing strange noises coming from your heating system? Unusual furnace sounds can be an early warning sign of trouble, and ignoring them could lead to costly repairs down the road. Here are some common furnace noises and what they might mean. 1. Banging or Booming If you hear a loud banging or booming sound when your furnace kicks on, it could indicate a delayed ignition problem. This occurs when gas builds up before igniting, causing a small explosion. If left unchecked, this issue can damage your furnace’s heat exchanger, leading to costly repairs or even system failure. Possible Causes: Dirty burners preventing proper ignition Low gas pressure Ignition system malfunction What to Do: Turn off your furnace and call a professional HVAC technician to inspect and clean the burners or adjust the gas pressure. 2. Squealing or Screeching High-pitched squealing or screeching noises are often linked to issues with the blower motor or fan belt. Over time, belts can become loose or worn, and motor bearings may need lubrication. Possible Causes: Worn-out or loose blower belt Motor bearings in need of lubrication Malfunctioning blower motor What to Do: Schedule a furnace inspection to replace belts, lubricate motor bearings, and ensure everything is running smoothly. 3. Rattling or Vibrating A rattling or vibrating furnace could be a sign of loose components or ductwork. If you hear metal-on-metal sounds, it may indicate a more serious mechanical issue. Possible Causes: Loose screws or panels Unsecured ductwork Failing blower motor What to Do: Check for loose screws and panels and tighten them if necessary. If the rattling persists, have an HVAC technician inspect your system. 4. Clicking Sounds While it’s normal to hear some clicking when your furnace turns on and off, excessive clicking could be a sign of a failing ignition system or a faulty relay. Possible Causes: Faulty ignition system Defective flame sensor Electrical component issues What to Do: If the clicking is persistent or your furnace struggles to ignite, call a professional for a thorough inspection. 5. Whistling or Hissing A whistling or hissing noise often indicates an airflow restriction or a gas leak. If you suspect a gas leak, turn off your furnace immediately and evacuate your home. Possible Causes: Dirty or clogged air filter Leaky ductwork Gas leak (if accompanied by a sulfur smell) What to Do: Replace your air filter and check for any visible duct leaks. If you smell gas, leave your home and call your gas provider or HVAC professional immediately. When to Call a Professional If your furnace is making strange noises that persist after simple troubleshooting, don’t ignore the warning signs. At Evans Plumbing, Heating, and Mechanical, we provide expert furnace repairs and maintenance to keep your system running safely and efficiently.
By 7011748352 February 20, 2025
When the temperatures drop in Hailey, Idaho, the last thing you want is for your furnace to start blowing cold air. A malfunctioning furnace can quickly turn your cozy home into an icebox, making it crucial to identify and address the issue as soon as possible. Here are some common reasons why your furnace might be blowing cold air and what you can do about it. 1. Your Thermostat Settings Need Adjustment Before assuming the worst, check your thermostat settings. Ensure it is set to "Heat" and not "Fan" or "Cool." If the fan is set to "On," it will blow air continuously, even when the furnace isn't actively heating. Switching the fan to "Auto" allows it to only run when heat is being produced. 2. Your Furnace Filter is Clogged A dirty or clogged furnace filter can restrict airflow and cause the system to overheat. When this happens, your furnace's safety mechanism may shut down the burners, allowing only cold air to circulate. Check your filter and replace it if it's dirty. 3. The Pilot Light is Out If you have an older gas furnace, a blown-out pilot light could be the reason for the lack of heat. Check to see if the pilot light is lit. If it's out, relighting it might solve the problem. However, if it continues to go out, there may be an issue with the thermocouple or gas supply that requires professional assistance. 4. Your Furnace is Overheating An overheating furnace may shut itself down as a safety precaution, leaving only the blower running, which results in cold air blowing through the vents. Common causes of overheating include a clogged filter, blocked vents, or mechanical failures. If replacing the filter doesn't help, it's time to call in an HVAC professional. 5. There’s a Problem with the Gas Supply If your furnace isn't getting enough gas, it won't be able to produce heat. Check other gas appliances in your home to see if they're working properly. If there's an issue with your gas supply, contact your utility company or a licensed HVAC technician. 6. Your Ductwork Has Leaks Leaks in your ductwork can allow warm air to escape before it reaches your living spaces, leaving you with cold air blowing from your vents. If you suspect ductwork issues, an HVAC professional can inspect and seal any leaks to restore efficiency. When to Call a Professional If you've checked your thermostat, changed your filter, and your furnace is still blowing cold air, it's time to call the experts. At Evans Plumbing, Heating, and Mechanical, we provide professional furnace repair services to keep your home warm and comfortable all winter long.
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