Backflow prevention
RPZ and double-check devices: DEP-approved plan, installation, the yearly test, the report to DEP.
Water heaters & hot water
Sizing, tank or tankless, venting, recirculation, mixing valves. Homes and commercial.
01 · The problem
An undersized heater runs out at the dinner rush. An oversized one short-cycles and dies early. A recirculation loop without a check valve heats the cold line. The failures are all design failures.
02 · The system
Sizing from the fixture count and the recovery the building actually needs. Venting per the appliance listing. Thermostatic mixing where the code requires it. Dielectric unions where copper meets steel.
03 · The fix
Heater set, piped and vented; power and fuel hookups listed in the scope, so nobody assumes the other trade has them. Recirculation pump and check valve. Expansion tank on the cold supply wherever a check valve, pressure-reducing valve or backflow preventer feeds the heater (NYC Plumbing Code 607.3). Relief line full size through an air gap, ending within 6 inches of the floor (504.6). Tested, documented.
What is included
- Tank and tankless water heaters, gas and electric
- Recirculation pumps and loops
- Thermostatic mixing valves, expansion tanks
- Venting and combustion-air review
- Replacement of failed units with the system corrected, not copied
Where
New York City: Brooklyn, Queens, Manhattan, the Bronx and Staten Island. PlumbHub LLC is a plumbing project contractor. Permitted plumbing work in New York City is filed, supervised and signed off by the New York City Licensed Master Plumber engaged for each project.
Related
Other systems
Repairs & leaks
Leaks, valves, toilets, faucets, low pressure, burst pipes. Found, then fixed.
Repiping in copper & cast iron
Failed galvanized, old stacks, corroded risers. Replaced in phases in occupied buildings.
Tell us what it does. We tell you why.
Call or text with the symptom, or send photos and the layout for an estimate.