If you’re on the market looking for a new furnace, you’ve probably come across the term AFUE. Annual Fuel Utilization Efficiency (AFUE) is an abbreviation for Annual Fuel Utilization Efficiency. The annual fuel utilization efficiency (AFUE) of a gas furnace is a measure of its efficiency in converting fuel to energy. The higher the AFUE rating, the more energy efficient the system. Many homeowners are confused about what the AFUE rating means, what they should look for in a new heating system, and how this value compares to others.

What is AFUE?

The AFUE rating of a furnace measures its gas efficiency over the course of a heating season. The AFUE, which is represented as a percentage, reveals the precise quantity of heat generated for each fuel dollar used; the greater the percentage, the more efficient the heating unit.

A furnace with a 90 percent AFUE, for example, indicates that throughout the course of the winter, 90 percent of the fuel utilized was turned into heat and just 10% was lost. Older furnaces have an average AFUE of 60%, but contemporary, high-efficiency furnaces can have an AFUE close to 99%.

As an example, take a furnace with a 98% rating. In this scenario, a 95 percent rating means that 95 percent of the gas used by the furnace is converted to heat, while the remaining 5% is lost in the exhaust.

Or, to put it another perspective, for every $1 spent on heating in your house, 95 cents are used to heat your home, while the remaining 5 cents are wasted.

What is the Best for your home?

The higher the AFUE, the more money you’ll save on heating expenses each month. You’ll save even more money each month as gas prices rise. For these reasons, you’ll want to invest in the most energy-efficient heating system you can afford.

A new high-efficiency furnace will be more reliable than an older model, in addition to saving money each month. New furnaces normally come with a 10-year parts guarantee, but older units have a 5-year parts warranty. This will provide you piece of mind knowing that if your furnace requires a replacement part, the part will be free of charge for the first ten years. You may also add an extended labour warranty to your new furnace to provide complete coverage for both parts and labour.

Your AFUE allows you to compare the efficiency of several furnace types, guiding you in making the best decision for your home. However keep in mind that the AFUE rating is only one component of the equation.  You must also assess that you have the proper furnace size. We want to make this process as simple as possible for you, and help to calculate the correct size for your new system.

At NOVELCARE, we only offer high efficiency furnaces and the best service. We have a number of different models to fit most budgets and you can use a sizing chart to ensure that the right equipment is used in your home.

Purchasing a brand new furnace is a serious decision these days because there are so many options, including different brands, models, and variations, technical capabilities, furnace types, and efficiency ratings. However, one of the most important factors to consider when choosing a new furnace is the size that is best suitable for your home in Aurora.

A Building Permit from Aurora Town Hall is usually not required for furnace replacement if no building alterations are taking place.

Installing a properly sized furnace requires more than simply calculating your home’s square footage. There are various aspects to consider while sizing a new gas furnace. Now we’ll go over what those factors are, why properly sizing a furnace is so important, and how to find a furnace that’s the right size for your location, environment, and comfort needs.

The goal of this article is to guide you in choosing the required size of furnace for your heating needs. It is calculated by taking the required heating BTU per square foot for most homes and your climate zone. Our heating BTU calculator takes these critical things into consideration, allowing you to give an answer for common questions as “how many BTUs to heat a home?” or “What size furnace do I need?”

The BTU per square foot heating rule of thumb varies greatly depending on your climate and the area of your house or room you wish to heat up. Aurora is located in Zone 2.

Why choosing the best Furnace Size Is So Important?

While it may be appealing to choose a smaller furnace to save money on the purchase or a larger furnace to increase space-heating, we should follow the Golden Mean rule with furnaces, just as we should with many aspects in our lives: you need one that is just right for your home.

A furnace which is far too powerful will cycle irregularly. This is problematic because it will generate hot and cold zones around the house, decrease efficiency, require additional maintenance, and shorten the life of the furnace.

An undersized furnace will operate non-stop and won’t keep the temperature in your home at comfortable levels. The additional workload will also increase your energy bills, inrease the probability of maintenance issues, and also shorten the lifespan of your heating unit.

Another drawback of having a furnace that is the incorrectly sized is that it will reduce the overall efficiency of your heating system.
The AFUE (Annual Fuel Utilization Efficiency) is the thermal efficiency measurement of a furnace based on normal operation. The AFUE tries to represent the equipment’s actual, season-long average efficiency, taking into account all operating factors.

You won’t be able to get the efficiency rating you paid for if your furnace runs continuously or irregularly because it is the wrong size. That means more energy use and higher heating expenses.

Your furnace must be correctly sized for your home in order to perform at the efficiency level it is rated for.

How many BTU do I need for my house in Aurora?

That is a crucial question that must be answered correctly. On the coldest winter days, a furnace that is way too undersized will not heat your home properly. Areas further away from the furnace may become uncomfortably cold in your home.

An oversized furnace will waste large amounts of energy, and create hot patches around vents close to the furnace before the heating cycle stops.

When you talk about furnace size, you are not talking about the actual physical dimensions of the unit. Rather, the size of a furnace is determined by its heating output and the amount of heat it can provide.

The output of a furnace is often measured in British thermal units (BTU) per hour. A BTU is a unit of measurement for energy, particularly the amount of energy necessary to raise the temperature of one pound of water by one degree Fahrenheit. Heat is now understood to be the same as energy. The joule (J) is the current SI unit for heat and energy; one BTU equals about 1055 J.

Furnace BTU

You need to remember, that “BTU/h” is sometimes abbreviated to just “BTU”. The modern unit of power for heating and cooling systems is the watt. 1000 BTU/h is approximately 293.1 W.

Some manufacturers have started to calculate furnace size in MBHs rather than BTUs. One MBH is 1000 BTU per hour, then you’re still using the same unit: 60 MBH is equal to 60000 BTU.

The general BTU per square foot heating rule of thumb varies from 30 BTU per square foot to 60 BTU per square foot based on your climate zone. That is a significant variation, with one furnace being twice as powerful as the other, so the size factors are explained here to help you in how to size a new furnace for a house.

A bigger furnace, such as one with an output of 120000 BTU per hour, will provide enough heat for a larger space. A smaller furnace will have a smaller BTU capacity, such as 40000 BTU per hour, and would be suitable for only a smaller pace.

Calculating BTU requirements for a house

Let’s start with this useful map of Furnace Size Calculator Canada. The climate becomes progressively colder from zone 1 to 3.

Find your location on the map. If you’re on or close the border between two zones, choose the higher number, the cooler zone.

Canada climate zones

Take the square footage of your home. If you don’t know it, you can look up the blueprint of the house, or measure rectangles within your home. Multiply the width by length for each rectangle and add them together.

It is not quite accurate, but nevertheless very useful for our purposes. While you shouldn’t use this furnace size calculator to make a final decision about furnace size, you can use it to get an idea of the size range to look at when you buy a new furnace. You can get a basic estimate using the square footage of your house.

The general rule of thumb is that you need between 30 and 60 BTU per square foot. Depending on your climate zone, you can determine how many BTU per square foot you need.

Furnace BTU sizing chart

Square footage Furnace BTU for
Zone 1
Furnace BTU for
Zone 2
Furnace BTU for
Zone 3
1000 30000 BTU 45000 BTU 60000 BTU
1250 37500 BTU 56250 BTU 75000 BTU
1500 45000 BTU 67500 BTU 90000 BTU
2000 60000 BTU 90000 BTU 120000 BTU
2500 75000 BTU 112500 BTU 150000 BTU
3000 90000 BTU 135000 BTU 180000 BTU

Living in Aurora, Ontario (Zone 2), in a home which is 2000 square feet. The chart would tell that you probably need a 90000 BTU furnace.

This value is only a rough approximation to demonstrate how these previously mentioned factors can affect the furnace size you need to buy, how many BTUs needed to heat a house. There are several additional factors that can affect the final furnace sizing calculation.

Professional furnace sizing

The best way to ensure your furnace is the right size for your home is to get an evaluation from a professional HVAC expert at Novel Care.

Novel Care has been proudly providing professional Furnace Installation services to accurately calculate the square footage of your home, factor in all the other elements that can impact furnace size, and give you a precise BTU capacity for your furnace.

We need to inform people living in Stouffville on how to prepare for and avoid house fires. Heating systems are one of the leading causes of house fires, second only to kitchen equipment, according to data, therefore it is essential to be aware of furnace safety. Fortunately, there are some simple precautions you can take to minimize the possibility of a fire and keep your house and family safe and prepared in case of emergencies.

Furnace Fire Causes

Furnaces may get very hot, especially if they are used constantly during the wintertime. Because of the heat, you should keep the area surrounding your furnace free of clutter. The majority of Stouffville fire deaths are the consequence of flammable objects being left close to a heat source, generally the gas furnace. To reduce the risk of fire, you should leave at least three feet of space around your furnace free.

You need to look for discoloration or heat on the walls surrounding the furnace. If you discover any of these indications, contact Novel Care to have a professional heating specialist inspect your gas furnace.

Carbon Monoxide Awareness in Stouffville

As a byproduct of burning fuel for heating, your gas furnace may emit potentially hazardous gases. Some of these gases, such as carbon monoxide, are odourless, making them extremely dangerous. When typical fuel-burning appliances and equipment which burns natural gas, oil, wood, propane, and kerosene do not get enough oxygen to burn, this odourless gas is generated as a byproduct of insufficient combustion. Furnaces, though, are intended to safely exhaust harmful gases outdoors. To minimize carbon monoxide buildup in the home, make sure that your vents are clean of any clogs or dirt.

Carbon Monoxide, known by its chemical fourmula of CO, is a toxic gas that cannot be seen, smelled, or tasted. CO is also known as the “silent killer.”

Carbon monoxide may accumulate in the house, particularly in enclosed areas, and this can have devastating consequences on humans and all living creatures.

CO has warning signs by how it affects humans. CO poisoning causes flu-like symptoms, such as:

  • headache
  • nausea
  • dizziness
  • fatigue
  • burning eyes
  • confusion
  • disorientation
  • drowsiness

CO poisoning affects your body’s ability to absorb oxygen. It can cause brain damage and death in extreme situations. The elderly, children, and those suffering from heart or respiratory problems may experience the affects sooner than the others. Even low quantities of CO gas might be extremely dangerous.

The best solution to protect yourself and your family in Stouffville against carbon monoxide poisoning is to eradicate it at the source. When it comes to CO safety, here is a checklist to take into account.

  • Have fuel-burning appliances installed by a professional Novel Care technician with over 35 years of experience.
  • Have all your fuel-burning appliances and vents are inspected annually.
  • Keep chimneys clear of small animals, leaves, and other debris to ensure proper ventilation.
  • Ensure your furnace is inspected for adequate ventilation.
  • Install a working carbon monoxide alarm near all sleeping areas in your home.
  • Remember to test your CO alarms once a month by pushing the test button on the unit.

Small Animals Can Cause a Furnace Fire

As leaves and tiny animals might sneak into your vents, it’s a good idea to make it a routine practice to check them frequently. If you have a cat, you may have seen it resting on the heating vent that delivers air to your ducted furnace. It may not be cold enough in the home or outside yet, but cats enjoy resting on furnace vents. Cats, like any other animal, are always looking for ways to feel relaxed. You may believe that your cat is intelligent enough to avoid every risk in your home on their own, but it may or may not recognize real danger. There are a number of HVAC hazards in your basement, including your gas furnace. Sitting near or on the furnace should not be encouraged.

Fill out our Novel Care online booking form to book your next appointment in Stouffville.

We need to remind Richmond Hill residents how we can prepare for and prevent home fires. Since statistics show that heating systems are one of the main causes of home fires, second only to cooking equipment, it is important to be aware of furnace safety. Fortunately, there are some basic tips that can help to reduce the risk of fire and keep your home and family safe and prepared for emergencies.

Furnace Fire Causes

Furnaces can become hot, especially when they are in constant use during winter. This heat means that you should keep the area around your furnace clear. Most of fire deaths in Richond Hill are the result of combustible materials being left near a heat source, usually a furnace. Ideally, there should be at least a three foot area of space around your furnace to reduce the risk of fire.

You should also check the walls near the furnace to check for discoloration or heat. If you notice any of these signs in the vicinity, call a professional heating expert from Novel Care to check for gas furnace dangers.

Carbon Monoxide Awareness in Richmond Hill

As a side effect of burning fuel for heat, your furnace will produce potentially dangerous fumes. Some of these fumes, including carbon monoxide can be odorless, which makes them especially dangerous. This odourless gas is produced as a byproduct of combustion when common fuel-burning appliances and equipment that use natural gas, oil, wood, propane and kerosene, don’t get enough air to burn up completely. Fortunately, furnaces are designed to safely vent these fumes outside. Therefore, to avoid carbon monoxide build up in house, it is important to ensure that your vents are clear of any obstructions or debris.

Carbon Monoxide, also known as CO, is a poisonous gas that you can’t see, smell or taste. CO is often referred to as the “silent killer”.

Carbon monoxide at home can build up, especially in a confined room or space – and this can lead to toxic effects on humans and pets.

CO has warning signs by how it affects humans. CO poisoning causes flu-like symptoms, including:

  • headache
  • nausea
  • dizziness
  • fatigue
  • burning eyes
  • confusion
  • disorientation
  • drowsiness

CO poisoning makes it difficult for your body to absorb oxygen. In severe cases it can cause brain damage and death. The elderly, children and people with heart or respiratory issues may feel the effects sooner than others. Even small amounts of CO gas can be dangerous.

The best way to ensure that you and your family in Richmond Hill are not exposed to carbon monoxide is to eliminate this poisonous gas at the source. Here is a list to follow when it comes to CO safety.

  • Have fuel-burning appliances installed by a professional Novel Care technician with over 35 years of experience.
  • Have all your fuel-burning appliances and vents are inspected annually.
  • Keep chimneys clear of small animals, leaves, and other debris to ensure proper ventilation.
  • Ensure your furnace is inspected for adequate ventilation.
  • Install a working carbon monoxide alarm near all sleeping areas in your home.
  • Remember to test your CO alarms once a month by pushing the test button on the unit.

Small Animals Can Cause a Furnace Fire

Leaves and small animals can get into your vents, so it is a good idea to establish a routine of checking your vents are clear. If you’re a cat owner you may noticed your cat sitting on the heating vent that distributes air for your forced air furnace. It might not even be that cold in the house or outside yet, but cats love sitting on furnace registers. Cats like any other animal are constantly searching for comfort. You might think that your cat is smart enough to avoid all danger in your home on their own, but it may or may not understand where danger lies. In your basement there are a number of HVAC dangers including your furnace. Sitting near or on the furnace shouldn’t be something you encourage. There is always chance they get too close to the pilot light or brush up against a hot tube or duct. Cat and small animals pose a furnace fire hazard.

Fill out our Novel Care online booking form to book your next appointment in Richmond Hill.

We’d like to thank all of our dedicated and loyal customers that voted for us to achieve the Top Choice Award title of:

Top Commercial Air Conditioning and Heating Company of 2017 in GTA

We use our 30+ years of experience to ensure that our customers get the services they need at competitive prices. We rely on referrals for a lot of our business and over the years our business has grown. This tells us that our customers are pleased with our services and pricing. We are very happy to receive this award, but the real reward comes from our happy customers. We’ll continue to provide the same services that we always have to ensure that our customers are happy, regardless of whether we win any awards or not.

Read more about the 2017 winners

Or book an appointment online with Novel Care today.