The Best Indoor-Outdoor Gas Fireplaces

For builders and designers, the indoor-outdoor living trends present both an opportunity and a challenge: how do you create spaces that look stunning and feel restorative? The most elegant answer is the indoor-outdoor gas fireplace.

At its core, wellness design is about connection - to others, the outdoors and to yourself. Fire has always been one of the simplest, most powerful ways to create that feeling. It draws people in, encourages presence and slows the pace of a space. An indoor-outdoor fireplace like the see-through Primo II from Heat & Glo takes that instinctive appeal and expands it. By bridging two environments, it creates a physical and visual connection that encourages flow and continuity. From a design perspective, it dissolves barriers. And from a human perspective, it’s grounding.

Architects and builders are rethinking the way spaces interact. The once-clear separation between indoors and outdoors is softening, replaced by transitional zones that function beautifully in both directions. The continuity of line and material makes everything feel intentional. Use a consistent flooring material across the threshold, match finishes, and keep the hearth design minimal for the fire to take center stage. When done right, the result doesn’t feel like two spaces. It feels like one seamless experience.

Wellness is less of a trend and more of a true cultural reset. Homeowners are looking for comfort that adapts to the rhythms of everyday life. Gas fireplaces are perfectly suited for that. With reliable ignition, adjustable flame heights, and zone-heating capabilities, they bring steady warmth without the smoke or maintenance of wood. Builders love them because they’re efficient and predictable. Homeowners love them because they make it easy to extend patio season - or start the morning coffee ritual outside - even when the air is crisp.

Fire does more than warm a space. It changes how a space feels.

Studies in biophilic design show that natural elements reduce stress, enhance mood and even encourage social connection. That’s why spa-inspired bathrooms, living walls and outdoor lounges have become so popular: they appeal to a deep sense of calm and belonging. An indoor-outdoor fireplace taps into that same instinct. It provides light, movement and warmth in a way that feels deeply human.

Go back to HHT ProAdvantage.