How much does it cost to upgrade from a basic fireplace insert to one with a built-in thermostat in Ottawa?

The thermostat feature itself is rarely a separate upgrade cost — it's almost always bundled into the control package of mid-range and premium fireplace inserts rather than priced as a standalone add-on. What you're really choosing between is a basic insert with manual controls versus a more fully featured unit with an integrated thermostat, remote, and programmable settings, and that difference typically adds $300 to $800 to the unit price depending on the manufacturer and insert type.

For context, a standard gas insert in Ottawa runs $2,500 to $5,500 fully installed, with basic units at the lower end offering simple on/off wall switches or basic remotes, and mid-to-upper range units including thermostatic remotes or wall-mounted thermostats that let you set a target room temperature and have the fireplace cycle on and off to maintain it. The thermostatic control package — which usually includes a programmable remote, a wall thermostat receiver, and sometimes a timer function — is typically priced at $200 to $500 extra at the retail level, though some manufacturers include it as standard in their mid-grade lines.

Wood-burning inserts don't offer true thermostat control the way gas units do, since you can't electronically regulate a wood fire. Pellet inserts are the exception — they have the most sophisticated temperature control of any insert type, with built-in digital thermostats that automatically feed pellets to maintain a set temperature. A pellet insert with full thermostatic control in Ottawa runs $3,000 to $6,000 installed, and the thermostat functionality is essentially standard on most modern pellet units rather than an upgrade.

One practical consideration worth knowing: the thermostatic remote on a gas insert requires a millivolt-rated gas valve, which most modern direct-vent inserts already use. If you're retrofitting an older gas insert with a newer thermostatic control system, a TSSA-licensed gas fitter will need to verify compatibility — this is not a DIY project, and any modification to the gas valve or control system requires a licensed technician under Ontario law.

When you're comparing inserts, ask the dealer to show you the full control package included at each price point rather than treating the thermostat as a separate line item — you'll often find that stepping up one model tier gets you thermostatic control plus other meaningful upgrades like higher BTU output or a better blower system. If you're ready to get quotes on a specific insert, you can browse fireplace contractors through the Ottawa Construction Network directory at justynrookcontracting.com/directory to compare local installers who can walk you through the options in person.