What is the price difference between a gas insert and a gas log set in Calgary?

A gas insert typically costs $2,500-$5,500 installed in Calgary, while a gas log set runs $800-$2,500 installed — making gas log sets roughly $1,500-$3,000 less expensive. However, this price difference reflects fundamentally different products that serve different purposes in your existing masonry fireplace.

Gas inserts are complete sealed fireplace units that slide into your existing masonry firebox and transform it from an inefficient open fireplace (10-15% efficiency) into a high-efficiency heating appliance (70-85% efficiency). The insert includes its own firebox, glass doors, blower fan, and heat exchanger. Installation requires running a flexible aluminum or stainless steel liner up your existing chimney, connecting a gas line, and often installing a new chimney cap. You're essentially installing a new fireplace inside your old one. During Calgary's brutal winters when temperatures hit -25°C to -35°C, a quality gas insert can provide 25,000-40,000 BTU of meaningful supplemental heat that reduces your furnace load and provides comfortable zone heating.

Gas log sets are decorative burners that sit inside your existing open firebox and burn with the damper open, just like a wood fire. They provide the visual appeal of flames and glowing logs but minimal heat output — most of the heat goes up the chimney. Vented gas log sets operate exactly like wood fires, drawing room air for combustion and exhausting up the chimney. Installation is simpler: connect the gas line to the log set burner and ensure proper damper operation. No chimney liner modification is typically required.

The efficiency difference is dramatic in Calgary's climate. Gas inserts capture and circulate heat into your room, making them genuine heating appliances that provide value during our six-month heating season. Gas log sets are primarily decorative — you're paying ATCO Gas rates of $3.50-$5.00 per GJ to create ambiance while most heat escapes up the chimney. For Calgary homeowners who want both beauty and function from their fireplace, the extra cost of a gas insert pays for itself through heating efficiency over multiple winters.

Installation complexity also differs significantly. Gas log sets require a gas permit and licensed gas fitter for the gas line connection, but the existing chimney typically needs no modification. Gas inserts require the same gas permit plus chimney liner installation, which often means additional Safety Codes Officer inspection of the chimney system. If your existing masonry chimney has deteriorated mortar joints or a damaged clay liner — common in older Calgary homes after years of freeze-thaw cycles and chinook temperature swings — the insert installation may require chimney repair work that adds $1,500-$3,500 to the project cost.

Consider your goals and chimney condition. If you want occasional ambiance and your existing fireplace draws properly, a gas log set provides the flame experience at lower cost. If you want supplemental heating during Calgary winters and your chimney is in good condition, a gas insert delivers far more value despite the higher upfront investment. Have your chimney inspected before deciding — cracked liners or deteriorated mortar may influence which option makes financial sense for your specific situation.

Need help finding a fireplace installer to assess your existing fireplace and provide estimates? Calgary Fireplaces can match you with local contractors who specialize in both gas inserts and log set installations.