Calgary’s winter can be cold, snowy, and dry. A reliable heating system is crucial for staying safe and comfortable during these frigid months. Many homes are heated with either a furnace or a boiler. When choosing between a furnace or boiler for your home, it’s important to know how each system works and other factors like energy efficiency and maintenance requirements.
Both systems are used to heat your home but the similarities end there. Keep reading for a detailed comparison of boilers and furnaces for Calgary’s winter heating needs.
What is a Boiler?
A boiler heats water and then distributes it through a network of pipes throughout your home. The heated liquid is pumped to devices like radiators, baseboard heaters, or in-floor heating loops to warm the air in your home. Most modern boilers use natural gas as a fuel source, but some may use oil or propane. This type of heating system is also known as a hydronic heating system.
What is a Furnace?
A furnace uses a fuel source, usually natural gas, to generate heat in your home. A pilot light or electronic ignition ignites the gas to create heat in the furnace’s burner which passes through a heat exchanger or heating element. The warm air is distributed to your living spaces through your home’s ductwork system and vents or registers. This type of heating system is also known as forced air.
Now that we know the key differences between how boilers and furnaces work to heat your home, let’s further compare the two:
Initial Cost
The price of a new furnace or boiler can vary, but overall, installing a natural gas furnace is less expensive. Boilers are typically heavier and installation can be more complex, adding to the initial cost.
Size
Boilers are usually shorter and more cylindrical whereas furnaces are usually taller but more compact, allowing for more flexibility in their placement.
Energy Efficiency
Boilers are generally more energy efficient than furnaces because water conducts heat better than air. Heating air requires more energy so furnaces tend to use more fuel over a shorter period of time than boilers.
When comparing energy efficiency, it’s important to consider the Annual Fuel Utilization Efficiency (AFUE) ratings. AFUE is a standard measurement of how efficiently your heating system converts energy from the fuel it uses into warm air for your home. The overall AFUE of your heating system will depend on its age and type. High-efficiency boilers may have an AFUE of 90-98.5%. High-efficiency furnace models must have AFUE ratings of 85% or higher.
Maintenance Requirements
A boiler heats your home without using forced air and therefore tends to require less regular maintenance than a furnace. A furnace requires air filter replacements every 1-3 months, which most homeowners can easily do themselves. Ducts should be kept clean and the blower motor may need to be inspected and cleaned when dust and debris accumulate.
Both furnaces and boilers should be serviced annually by a professional HVAC technician. Regular maintenance ensures that your heating system is running as efficiently as possible and can extend the life of your unit.
Longevity
Boilers typically last longer than furnaces, but both can last a long time with proper maintenance. Boilers can last between 15-30 years, whereas the lifespan of a furnace may range from 15-20 years. Boilers usually last longer because they have fewer moving parts and are built to resist corrosion. Your furnace may require more frequent repairs than a typical boiler.
Comfort
Most people find boiler heating systems to be the most comfortable because they provide radiant heat. They heat objects and surfaces rather than circulating air for a draft-free, consistent heat. Furnaces can cause uneven heating and circulate dust and allergens. This can be an issue if someone from your household suffers from allergies or other respiratory problems. Boilers reduce the movement of dust and allergens, creating better air quality inside your home.
While furnaces are the most commonly used heating system in Calgary, boilers offer a few advantages for heating your home. However, boilers generally cost more upfront and take up more space. The decision to install a boiler or furnace depends on your household’s specific heating needs. If you’re still unsure which is best for your home, contact us today at Mr. Mike’s Plumbing and Heating!
