About This Service
Define Replacement, Insert or New Installation
A factory-built replacement, an insert and a new masonry fireplace are different construction projects. Name the intended system in the estimate, even when finished examples look alike. Reuse of existing parts must be assessed for that project rather than assumed from the appearance of the old facing.
Resolve the Venting Route Early
For a vented fireplace, establish the route and compatible components while selecting the appliance. A nearby chimney is not evidence of a suitable connection. Twin identifies what remains to be confirmed; the selected product instructions and applicable project requirements determine the installation arrangement.
Check the Receiving Fireplace for an Insert
A fireplace insert needs a suitable receiving fireplace and a compatible connection. Its decorative front does not establish either condition. Assessment should identify existing damage, venting requirements and access constraints, with additional preparation listed separately from the appliance itself.
Review the Depth Behind the Face
A wall opening may appear wide enough while lacking the depth or surrounding arrangement the product requires. The complete installation envelope should be checked from the actual instructions. A shallow decorative face does not establish what is needed behind the finished wall.
Confirm the Product Before Enclosure
The delivered model and required components should correspond to the agreed project. If they differ, resolve the scope before the unit is enclosed by finishes. A last-minute substitution can create work that the original opening or connection plan did not cover.









