Luhrsen Lake Superior Stone Fireplace

Posted in Fireplace, Heater Love, masonry fireplace, PriorFire Firebox, Rosin Firebox, Stone Fireplace

The stone for this project was hand picked by the Luhrsens at various locations along Lake Superior.  We designed a Rosin Style 36″x36″ PriorFire Firebox into this fireplace because this is one of the most efficient open hearth fireboxes that


Cook Lake 48″ PriorFire Fireplace Retrofit

Posted in Fireplace, masonry fireplace, PriorFire Firebox, Restoration, Rosin Firebox

We upgraded the inefficient existing fireplace that the homeowners originally had to a much more efficient PriorFire/Rosin style firebox.  We also relined the chimney with a smaller 9″ flexible stainless steel chimney and insulated the extra space between the new


Mt. Horeb SR-22 Bell Heater with black oven. Tulikivi Harmaja & 36×36″ PriorFire Fireplace.

Posted in Bakeoven, Black Oven, Cooking, Double Bell Heater, Fireplace, Heater Love, masonry fireplace, Masonry Heater, Masonry heater core, Masonry Heater Door, PriorFire Firebox, Rosin Firebox, Russian Bell Masonry Heater, SR-22 Core, Stone Fireplace, Stone masonry heater

Here are some updated final photo’s from the project down by Mt. Horeb WI.  We built one of our SR-22 masonry heating systems with a black oven and double bell heating chambers.  We also built a 36″x36″ PriorFire/Rosin style fireplace


Simensen 36″ Rosin Fireplace finished with Fieldstone & Slate

Posted in Fireplace, masonry fireplace, Rosin Firebox, Taconite stone, Uncategorized


Rosenbloom 36″ Rosin fireplace. Corinthian Granite and massive hearth.

Posted in Fireplace, masonry fireplace, Rosin Firebox, Rumford, Stone Fireplace, Uncategorized

This fireplace has a 36″ Rosin Style firebox so it only requires a chimney ~50% of the standard Rumford style firebox.  Along with the curved aerodynamic nature of the firebox the resulting efficiency is about 60% greater than the typical