Commercial vs residential plumbing key differences.
Scale: homes have 10-15 fixtures, commercial buildings have dozens.
Commercial operates under higher pressures with larger pipe sizes 50-150mm.
Includes booster pumps, grease traps, trade waste connections, mechanical plant rooms.
Regulations: trade waste agreements, backflow prevention, accessibility compliance AS 1428.1, fire services, TMV requirements.
Maintenance requires planned preventative programs.
Cost differences: blocked drain residential $150-$350 vs commercial $250-$600, hot water residential $1,200-$2,500 vs commercial $3,000-$15,000..