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HVAC is the home’s heating and cooling system.
In a forced-air heating system, the furnace feeds a main supply
duct. This branches off to other ducts that lead to the various
rooms of the house. Other ducts circulate cold air back to the furnace.
Ducts that service the upper floors of a house usually rise straight
up through the cavities of wall studs.
Some homes use a passive heating system, one that does not employ
the use of a fan. A hydronic system, for instance, uses hot water
or steam and a network of pipes to circulate heated water from a
boiler to heaters located throughout the house; whether baseboard,
convectors, or radiators.
When renovation projects alter the plumbing, wiring, or HVAC system
in any way, it is important to accurately map out each of these
systems when still in the planning stage. This can be a complex
process, as investigation of the course of pipes, wires, cables,
and ducts can be difficult to chart. Yet, knowing exactly what is
behind the surface of walls, floors, and ceilings – before
work begins – is essential.
Key points to remember before beginning any project that will alter
your house’s plumbing, electrical wiring, HVAC system, or
structure in any way:
- Accurately assess the structure and system of your house, and
draw up a detailed diagram.
- Draw up a detailed plan of your home renovation project.
- Show your plans to a local building inspector for approval.
- Obtain all necessary permits that may be required before work
begins.
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The Comprehensive
Guide to Home Renovations
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