How Much Does a Modulating Furnace Cost?

In today's energy-conscious world, many homeowners are making the switch from standard heating systems to modulating furnaces. Average modulating furnace costs can be as high as $10,000 to $12,000 (CAD 13,854 to CAD 16,625).

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While the initial cost may seem high, these systems are designed to help consumers conserve energy and save money down the line.

What Is a Modulating Furnace?

A modulating furnace is a type of high-efficiency furnace that continuously adjusts heat output to ensure balanced and comfortable indoor temperatures. Modulating furnaces are built with modulating gas valves and variable-speed blowers. When these parts work together, they help prevent major swings in temperature and overly loud cycling.

When compared to single-stage or dual-stage furnaces, modulating furnaces tend to provide more precise temperature control. The units are designed to maintain the desired temperature for your home within a few degrees, and they're capable of reducing hot and cold spots.

Modulating furnaces are the most energy-efficient type of furnace on the market. With an Annual Fuel Utilization Efficiency (AFUE) rating of up to 98%, these systems offer significant cost benefits. AFUE ratings show the amount of fuel that furnaces, water heaters and boilers convert into usable heat. Your modulating furnace has the capability to convert approximately 98% of gas or electricity into heat energy, making it extremely cost-effective over time.

How Do Modulating Furnaces Work?

The main components of a modulating furnace are the control board, modulating gas valve, heat exchanger and variable speed blower. One of the core differences between standard furnaces and modulating furnaces is that modulating furnaces don't cycle and shut off. Modulating furnaces operate continuously at lower settings and warm up when room temperatures fall below the set thermostat temperature. Here's a rundown of how modulating furnaces work:

• The thermostat makes a detection. When your thermostat detects that room temperature has fallen below your desired temperature, it sends a signal to the modulating furnace.

• The gas valve automatically adjusts. Once the gas valve inside the furnace receives the signal from your thermostat, it adjusts the gas flow to the furnace burners in small amounts.

• The combustion chamber ignites. After gas flow reaches the burners, it ignites the furnace combustion chamber to produce heat. The heat exchanger then captures extra heat to improve energy efficiency.

• Warm air enters your space. Following ignition of the chamber, the speed blower helps circulate warm air from the heat exchanger and into your space. This process happens gradually to ensure your home stays at a comfortable temperature.

• The furnace returns to lower settings. Once your desired home temperature is reached, your modulating furnace gradually moves back to a slightly lower setting to ensure optimal comfort and conserve energy.

How Much Is a Modulating Furnace? Installation Costs

Since modulating furnaces operate in multiple stages and provide on-demand heating when needed, they're typically some of the most expensive furnaces on the market. The average cost for a modulating furnace, including installation, is approximately $10,000 to $12,000 (CAD 13,854 to CAD 16,625).

However, several factors can affect pricing. Furnace make and model, labor costs and ductwork modifications may lead to higher (or lower) overall costs. Your installer may also charge extra if your existing furnace requires removal.

Here's a quick breakdown of some additional costs to consider when installing a modulating furnace:

• Labor: Licensed HVAC technicians typically install modulating furnaces. While hourly rates can vary, average labor costs run between $50 and $100 (CAD 69 and CAD 139) per hour.

• Permits and inspections: Permit and inspection costs can also vary, depending on your location and city regulations. If you must obtain a permit or have your property inspected before installing a modulating furnace, the average combined costs range from $400 to $1,500 (CAD 554 to CAD 2,078).

• Ductwork: If your ductwork requires any type of modification or your HVAC technician determines you need all-new ductwork, you can expect to pay anywhere from $1,000 to $7,000 (CAD 1,385 to CAD 9,698).

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What Are the Cost Savings With a Modulating Furnace?

If you compare the initial costs of a high-efficiency modulating furnace with the cost of installing more basic units, you can quickly see you'll spend more. Basic units have average purchase and installation costs totaling around $3,800 (CAD 5,625).

Exact cost savings can vary between models, but modulating furnaces are estimated to save buyers approximately $30 (CAD 41) in heating costs per month. If you consider an average lifespan of 20 years, you may save $7,000 (CAD 9,631) or more total with a modulating furnace, bringing total cost of ownership to a more even level.

However, for many people, the benefit of a modulating furnace comes down to comfort, so it's important to consider your preferences and how much value you put on them when choosing heating and cooling options for your home.

All CAD conversions are based on the exchange rate on the date of publication.