Every water heater service Long Island homeowners actually need, under one family-owned roof since 1981. Installation, replacement, emergency repair, tankless conversions, and brand-specific expertise — one number, real techs, same day when you call early.
Call Now (631) 898-5780Six core water heater services, dispatched from our Hauppauge depot daily. Pick the one closest to your situation or call and we will route you to the right one.
Same day tank-for-tank swaps, gas-to-electric conversions, hybrid heat pump installs, and full code-compliant replacements with permits pulled.
Installation & replacement →Wall-mounted, on-demand water heating. Navien, Rinnai, and tank-to-tankless conversions including gas line and venting upgrades.
Tankless replacement →No hot water, leaking tank, burst water heater, pilot won't stay lit, rumbling unit. We diagnose first and tell you straight whether repair or replace makes sense.
Emergency repair →Gas, electric, hybrid heat pump, indirect, power vent. Pros, cons, and which one fits your home, your utility setup, and your hot water demand.
Compare types →30, 40, 50, 75, 80 gallons. Tankless GPM ratings. Family sizing guide that matches LI home layouts and hot water habits.
Sizing guide →Rheem, Bradford White, AO Smith, Navien, and Rinnai. The brands we install every week and the warranty terms that come with each.
See brands →Domino Home Services has been providing water heater services to Long Island homeowners since 1981. Our techs roll out of our Hauppauge depot every day with stocked trucks, ready for same day hot water heater replacement, repair, or tankless conversion calls. Because we are a single-focus company, we know the housing stock, the utility setups, and the common quirks of Long Island homes inside and out, from village pre-war houses to post-war ranches to modern colonials.
Whether you have an active water heater emergency, a tank that is nearing the end of its life, or a home renovation that calls for an upgrade to tankless, the water heater services on this page cover every path forward. Phones are answered 24/7 by a real person.
You'll get the same boring, reliable process whether your water heater is leaking, refusing to fire, or just plain old.
A real Domino company member picks up. We ask a few questions, give a price range, and book a time.
Trucks roll out of Hauppauge already loaded with the common tank sizes. Tech texts on the way.
Permits pulled, code met, work area covered. Old unit hauled away. Most jobs done in 2 to 3 hours.
Written warranty, payment options, and hot water before the day ends.
Common sizes already on the truck. Most before-noon calls get installed the same day.
Permits pulled on every job. Meets Nassau and Suffolk plumbing code. Backed by labor warranty.
Three generations on Long Island. Same family, same number, same reputation we will not put at risk.