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The key to knowing when to replace your furnace versus when to repair it depends on its age and how many more years you can expect it to last. But, rather than humming and hawing about these questions, there is a simple equation you can use to help you decide.

This equation compares the cost of repairing the unit to the cost of replacing it. Here’s the calculation you can use to decide when you should replace your furnace:

“Cost of Repair” x “Age of Unit (in years)” > “Cost to Replace Furnace” = Replace Furnace

Multiply the cost of the furnace repair by the age of the unit. If this number is less than the cost of replacing your gas furnace, then opt for the repairs. If this number is larger, it will be cheaper to replace the furnace.

If you’re living in Alberta, in the St. Albert/Edmonton area, and you’re still unsure, talk to a local heating company. With their expert knowledge about your particular climate, they will be able to help you make a decision as to whether you should repair or replace your furnace.

A residential boiler system is used to heat a household. The boiler heats water inside a tank and distributes this hot water (or, in some cases, steam) via pipes, radiators and/or a radiant in-floor system in order to heat the inside of a home. Once the water has cooled and can no longer provide heat, it is sent back to the boiler to be reheated.

Although the name might suggest otherwise, modern-day boilers do not boil water. The term boiler comes from the fact that, in the past, steam boilers were common. Steam boilers boil water in order to create steam for heating purposes. Today, however, most boilers are water heating systems that distribute hot water, rather than steam, in order to heat a house.

It can cost anywhere from $150 to $1,500 to repair a furnace, depending on the issue. If you’re in the Edmonton area, the average cost to repair a furnace will be around $700.

Make sure the furnace company you choose to do your repairs is upfront with their pricing. They should be able to provide you with the price ahead of time so that you know exactly what to expect before moving ahead!

Want to save some money? Often professional heating and plumbing companies will offer a Service Partner Plan – we call ours the ProComfort Plan. This type of plan will help you keep on top of the regular maintenance your furnace needs for a fraction of the price. Regular furnace tune-ups and maintenance will help prevent any major issues, saving you from repairs and replacements that could cost you thousands of dollars! With plans like this, there is often a discount for members, meaning you’ll save money with every visit.

Furnace filter replacement is important if you’re using your AC. Maybe not as frequently as in winter when monthly changes are best. But check the filter regularly to see that it is functioning properly, and replace when necessary.

If you run your AC during the spring or fall, you will want to check your filter more often since this time of year has more allergens and particulates in the air that can cause you to become sick.

Boiler heat is not expensive on a day-to-day basis. In fact, you may save in energy costs when heating your house with a boiler compared to a furnace.

However, installing a boiler is typically more complex and therefore more expensive than installing a furnace. On average, a boiler will cost anywhere from $2,500 to $10,000 to purchase and install (depending on the brand and the system’s energy efficiency rating). Plus, your home will need extensive modifications to make a boiler system work – radiant heating must be implemented.

On the other hand, the average cost to buy and install a furnace in Edmonton is only $5,500 to $10,000+. With boiler heat, you will save in the long run but will have to pay more upfront.

The size of the furnace you’ll need largely depends on the size of your home. Size recommendations based on square footage are:

1,200 square foot home: 36,000 to 72,000 BTUs
1,500 square foot home: 45,000 to 90,000 BTUs
1,800 square foot home: 54,000 to 108,000 BTUs
2,100 square foot home: 63,000 to 126,000 BTUs
2,400 square foot home: 72,000 to 144,000 BTUs

Other factors that affect the size of the new furnace installation you’ll need include:

• Climate zone (for example, Edmonton is in Climate Zone 5)
• Quality of insulation
• Window thickness
• Ceiling height
• Number of people living in your home
• Preferred temperature
• Size and state of the basement

For more info om furnace shopping, read our full article on “how to choose the right furnace“.

It shouldn’t take a professional heating company in Edmonton too long to install a new boiler. For a simple boiler replacement, you can expect a trained professional to take between 4 and 6 hours.

Your new boiler will be up and running in less than a day. However, installing a brand new boiler, where one didn’t exist before, is a bigger job. Upgrading your current boiler to a different system or moving your boiler to a new location can also be more involved and will take a bit longer.

Because these jobs are more complex, they may take a team of professionals a few days to complete. Typically, you can expect to wait no more than a week for your new system to be up and ready!

If there is a crack in the heat exchanger of your heating system, your furnace could be leaking carbon monoxide (CO). This can be dangerous for you and your family, as CO can cause serious bodily harm and even result in death. Carbon monoxide is a colourless, tasteless, and odourless gas and therefore is not easily detected, especially in small quantities.

Your furnace may be leaking carbon monoxide if you or other members of your household are experiencing any of the following symptoms:

• Headache
• Weakness
• Dizziness
• Nausea or vomiting
• Feeling hungover
• Shortness of breath
• Confusion
• Blurred vision
• Loss of consciousness

If you think your furnace is leaking carbon monoxide contact a local heating company right away. If you think you are experiencing carbon monoxide poisoning, please seek professional medical advice immediately.