What Is the Difference Between a Boiler and a Furnace?

Professional Services
Oct 05, 2023

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Most people don’t consider how heating systems differ as long as they’re toasty in the dead of winter. However, referring to these distinct components as “the heat” or “the furnace” doesn’t capture the fact that furnaces and boilers are not the same at all. 


So, what is the difference between a boiler and a furnace? You might want to learn the answer before using your phone to search “best boiler installers near me” for your next repair and maintenance visit. Professional Services outlines the details below. 


Boilers vs. Furnaces


Boilers and furnaces are heat distribution appliances. They are often part of a larger HVAC (heating, ventilation, and air conditioning) network that supplies conditioned air throughout a building. 


While they both perform similar functions, they operate in different ways. 


  • A boiler requires gas or oil to heat and distribute warm air. It connects to a network of pipes installed in your walls and floors and uses a source of fuel to bring its water source to a boiling temperature. From there, the pipe network circulates this steam to release heat into each room.
  • A furnace is typically part of an average central heating and air system. It may use fuel or electricity to operate. Instead of circulating steam to help indoor temperatures rise, the furnace heats and distributes air through a network of ducts and vents. 


What Is the Difference Between a Boiler and a Furnace?


You might still view these systems as the same. They both keep your home cozy during frigid winter weather, so what is the difference between a boiler and a furnace? You’ll find some pros and cons connected to each below. 


Boiler Pros

Because of its fuel source and heat distribution method, a boiler boasts higher energy efficiency than the average furnace. This means lower monthly utility bills and a decreased carbon footprint. However, boiler perks don’t stop there.


  • Comfort: Furnaces blast hot air from designated vents. Boilers circulate steam, which radiates heat through your home’s structures, eliminating intense drafts and uneven temperatures. 
  • Noise pollution: Boilers aren’t as loud as furnaces. If you appreciate a quiet, peaceful home, you’ll love the boiler’s subtle operations.
  • Air quality: Your indoor air quality may improve after a boiler installation. Furnaces constantly blow air through your home, transferring allergens, dust, and other pollutants. You don’t have these issues with a boiler. 
  • Less maintenance: Schedule a tune-up each year before the cold weather hits. Your boiler will readily tackle the season! 


Boiler Cons

The boiler’s disadvantages come from its financial impact. Installing a boiler costs more than a furnace installation, and the installation services take longer than a furnace. Additionally, your boiler could spring a leak in its steam and water pipes, leading to expensive repairs. 


Furnace Pros

If you want a furnace, you’ll enjoy lower installation costs. Furnaces are also less likely to freeze and stop working than boilers since they don’t circulate water. Repairs will typically cost less per service than boiler repairs. 


Furnace Cons

Like all appliances, furnaces have several drawbacks. Some issues you may encounter include:


  • Uncomfortable drafts: Furnaces force air through vent networks. If you sit near a vent, you’ll deal with a constant flow of hot, dry air. These drafts can also reduce your home’s humidity levels, leading to excessive dryness during cold months. 
  • Uneven temperatures: Sometimes, forced air systems need zoning services to ensure even heating throughout a building. However, you might not recognize when you need this service. This leads to some rooms feeling warmer than others. 
  • Poorer indoor air quality: Since furnaces push air through a duct network, the air often carries dust and other particles with it. This heat distribution method could worsen your allergies.
  • Maintenance: You must change your furnace filter at least once every three months. You should also schedule annual inspections and maintenance services to ensure your furnace works reliably throughout the cold season. 
  • Higher energy costs: While furnaces cost less to install, they consume more energy. You’ll pay higher utility bills than with a boiler. 


Professional Services’ HVAC Experts Can Help You Choose Between the Two Options


What is the difference between a boiler and a furnace? Which one should you choose? Professional Services’ knowledgeable team can help you decide, read our boiler facts to learn more and feel free to ask us questions.


Does your property need HVAC services? Call (262) 218-2636 to schedule Professional Services today!

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