{"title":"Kozy Heat Inserts","description":"Our full Kozy Heat gas insert lineup — 10% off in-store during the Holiday Sale (Nov 2 – Dec 5, 2026).","products":[{"product_id":"kozy-heat-chaska","title":"Chaska","description":"\u003ch2\u003eChaska Gas Fireplace Insert Series\u003c\/h2\u003e\n\u003cp\u003eThe Kozy Heat Chaska series turns an existing masonry or factory-built wood fireplace into a clean, efficient direct vent gas insert. The Chaska keeps the location, surround, and proportions of the original fireplace and adds the cleanliness and control of modern gas operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSizing and specs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eChaska 25: 26,000 BTU\/hr NG (25,500 LP), steady-state efficiency ~78%. Kozy Heat's smallest gas insert, designed for compact existing fireboxes\u003c\/li\u003e\n\u003cli\u003eChaska 29: 30,000 BTU\/hr NG\/LP (log), 25,500 (glass), 28,500 (millivolt). Steady-state efficiency 72%–74%. Available with traditional log set or glass media, plus a millivolt ignition option\u003c\/li\u003e\n\u003cli\u003eChaska 34: 34,000 BTU\/hr NG\/LP, steady-state efficiency 77%–79%. Available with log or glass media\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor dedicated millivolt ignition on a wider unit, see the Chaska 335S. Each Chaska insert includes electronic ignition (IPI on most variants), ceramic glass, fan kit, and refractory brick lining. Customize with media options (log, glass, rock), screen front choices (nine styles available), and shroud options.\u003c\/p\u003e\n\u003cp\u003eThe Chaska series is part of the Kozy Heat collection at Custom Fireside.\u003c\/p\u003e","brand":"Kozy Heat","offers":[{"title":"25 \/ Log \/ IPI","offer_id":53828341498224,"sku":"CSK-25","price":0.0,"currency_code":"USD","in_stock":false},{"title":"29 \/ Log \/ IPI","offer_id":53922760360304,"sku":"CSK-29-L","price":0.0,"currency_code":"USD","in_stock":false},{"title":"29 \/ Glass \/ IPI","offer_id":53922760393072,"sku":"CSK-29-G","price":0.0,"currency_code":"USD","in_stock":false},{"title":"29 \/ Log \/ Millivolt","offer_id":53922760425840,"sku":"CSK-29-MV","price":0.0,"currency_code":"USD","in_stock":false},{"title":"34 \/ Log \/ IPI","offer_id":53922760458608,"sku":"CSK-34-L","price":0.0,"currency_code":"USD","in_stock":false},{"title":"34 \/ Glass \/ IPI","offer_id":53922760491376,"sku":"CSK-34-G","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/8430\/6544\/files\/Chaska29-Rock-Room-Mirror-e1760551198210-1024x775.jpg?v=1779394056"},{"product_id":"kozy-heat-chaska-335s","title":"Chaska 335S","description":"\u003ch2\u003eChaska 335S Gas Fireplace Insert\u003c\/h2\u003e\n\u003cp\u003eThe Kozy Heat Chaska 335S gas fireplace insert turns an existing masonry fireplace into a clean, efficient heat source. The 335S uses a millivolt valve system that operates without electricity, providing power-outage reliability that pure-electronic systems can't match.\u003c\/p\u003e\n\u003cp\u003eThe 335S delivers 36,500 BTU\/hr input with an 80% efficiency rating - one of the most efficient inserts in Kozy Heat's lineup. Customize with nine screen front options, three media options (traditional log, rock and glass, or rock media), and a range of refractory linings.\u003c\/p\u003e\n\u003cp\u003eThe Chaska 335S is part of the Kozy Heat collection at Custom Fireside.\u003c\/p\u003e","brand":"Kozy Heat","offers":[{"title":"Default Title","offer_id":51876861935984,"sku":"CSK-335S","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/8430\/6544\/files\/Chaska335S-MissionFront.jpg?v=1744266413"},{"product_id":"kozy-heat-nordik-insert","title":"Nordik Insert","description":"\u003ch2\u003eNordik Insert Series - Modern Gas Inserts\u003c\/h2\u003e\n\u003cp\u003eThe Kozy Heat Nordik Insert series brings the brand's EVO Elevated Burner technology to a gas insert format. Designed to transform an existing masonry or factory-built wood-burning fireplace, the Nordik Insert delivers a cutting-edge flame display in a familiar location.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTwo sizes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNordik 29i: compact insert, fits most existing fireboxes\u003c\/li\u003e\n\u003cli\u003eNordik 34i: larger insert, ~40,000 BTU\/hr, designed for spacious living areas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBoth inserts are compatible with Roosevelt 34 fronts, shrouds, and interior panels, ensuring seamless visual integration with existing decor or Chaska-style aesthetics.\u003c\/p\u003e\n\u003cp\u003eThe Nordik Insert series is part of the Kozy Heat collection at Custom Fireside.\u003c\/p\u003e","brand":"Kozy Heat","offers":[{"title":"29","offer_id":53828342219120,"sku":"NDK-29-i","price":0.0,"currency_code":"USD","in_stock":false},{"title":"34","offer_id":53922760294768,"sku":"NDK-34-i","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/8430\/6544\/files\/Nordik-34i-Chicago-Antique-Room.jpg?v=1744266411"}],"url":"https:\/\/customfireside.com\/collections\/kozy-heat-inserts.oembed","provider":"Custom Fireside","version":"1.0","type":"link"}