House systems
The major systems that move water, air, heat, loads, electricity and waste through a house.
Appliance connections
Water, drain, power, exhaust and fuel connections serving household appliances.
Building structure
Foundations, beams, columns, bearing walls, floors and roof framing that carry loads.
Combustion and flues
Fuel-burning appliances, chimneys, vents and the air required for safe combustion.
Cooling and air conditioning
Equipment and ducts that remove heat and moisture from indoor air.
Domestic water supply
Pressurized pipes, valves, connectors and fixtures that deliver water through the house.
Drain, waste and vent system
The pipe network that carries wastewater while balancing pressure and blocking sewer gases.
Electrical distribution
Service equipment, panels, circuits, wiring, outlets, switches and protective devices.
Exterior wall envelope
Cladding, drainage planes, flashings, insulation and interior finishes that manage rain, air, heat and vapor.
Fire separation
Assemblies, penetrations, alarms and doors intended to slow fire and smoke movement.
Foundation and ground interface
Footings, foundation walls, slab edges, soil, grading and drainage where the structure meets the ground.
Insulation and air barrier
Thermal insulation and airtight layers that control heat flow and air leakage.
Roof drainage
Gutters, outlets, downspouts and discharge routes that move roof water away.
Roof envelope
The layered weather boundary formed by roof covering, underlay, flashings, penetrations and drainage.
Site drainage
Ground slope, drains, swales and discharge paths that manage water around the building.
Solar and energy storage
Solar arrays, inverters, batteries, cabling and roof interfaces.
Space heating
Boilers, furnaces, heat pumps, radiators, distribution pipes and controls that provide heat.
Ventilation and airflow
Natural and mechanical air exchange, pressure pathways, extract points, supply air and transfer routes.
Windows and doors
Glazing, frames, seals, flashing, thresholds and hardware within openings.
