Installation & Replacement

Water Heater Installation & Replacement on Long Island

Same day water heater installation and replacement across Nassau and Suffolk. Tank swaps, gas-to-electric conversions, hybrid heat pump installs, and full code-compliant replacements. Family-owned since 1981.

Call Now (631) 898-5780

★★★★★

Most calls before noon are installed the same day.

Permits Pulled Old Unit Hauled Away Labor Warranty Included Nassau & Suffolk

When to Call Us

Signs You Need a New Water Heater on Long Island

Some calls are obvious (the floor is wet). Others sneak up. Here are the situations we get called for most often on Long Island.

▸Water around the base of the tank. Rust has eaten through. Replace today.
▸No hot water on a unit 10+ years old. Even if the cause is fixable, the rest of the tank is on borrowed time.
▸Rusty or brown hot water. The interior is corroding. The anode rod is gone.
▸Loud popping or rumbling. Hard-water sediment has cooked at the bottom. The unit is stressed and inefficient.
▸Repeated repair bills in the last 2 years. You are buying a new water heater on the installment plan.
▸You want to switch fuel or upgrade efficiency. Gas to electric, electric to hybrid heat pump, standard to power-vent.

Not sure where you fall? See our Repair vs Replace guide or call us. We'll tell you what we'd do if it were our house.

Water heater installation and replacement on Long Island by Domino Home Services

SAME DAY INSTALL

More About Our Long Island Water Heater Installation

Same Day Water Heater Installation & Replacement, Done Right

Water heater installation and replacement is what we do every day across Long Island. Our trucks are loaded with the most common tank sizes and the standard fittings needed for a clean install, which is how we deliver same day hot water heater replacement on most before-noon calls. Every install is permitted, code-compliant, and backed by a written labor warranty plus the full manufacturer warranty on the unit.

We install gas, electric, and hybrid heat pump tanks across all of Nassau and Suffolk Counties. Common situations include tank-for-tank emergency replacements when an old unit has rusted through, planned upgrades when a 12-year-old unit is on borrowed time, and fuel conversions when a homeowner is moving from oil to gas or from gas to high-efficiency hybrid heat pump. If you are not sure whether a repair or full water heater replacement is the right call, we will give you a straight answer over the phone.

Our Install Process

Our Water Heater Installation Process

Every water heater installation and replacement we do on Long Island runs through the same four-step process. Boringly consistent, the way it should be.

Phone Diagnosis

Tell us the symptoms, age of unit, and basement conditions. We give a real price range over the phone in 3 minutes.

Truck Rolls

The new unit and all standard fittings are already on the truck. Tech texts a 1-hour arrival window.

Old Unit Out

Drained, disconnected, hauled to the truck. Floor protection laid before any work starts.

New Unit In

Mounted, connected, gas tested, water leak tested, and fired up. Code-compliant venting and combustion air on every job.

What's Included

What's Included in Every Water Heater Install

There are no surprise add-ons. What we quote on the phone is what you pay, unless we find something during the install we have to discuss with you first.

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The Unit Itself

Brand-new tank or tankless from one of our 5 trusted brands. Manufacturer warranty registered in your name on install day.

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Standard Fittings & Labor

All standard supply lines, valves, T&P discharge piping, fittings, expansion tank if required by code, and the labor to install.

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Permit & Haul-Away

Permit pulled with your town. Old unit drained, hauled away, recycled. No second trip, no leaving the box on the curb.

Types of Installs

Water Heater Installation Types We Do Every Week

Long Island homes have wildly different basements, utility closets, and gas line setups. Older village houses, post-war ranches, modern colonials — each one has quirks. Here is the water heater installation work we do most often across both counties.

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Gas Tank Replacement

The bread and butter: tank-for-tank gas water heater swaps. 40, 50, 75, and 80 gallon. Standard vent through chimney or power-vent through the wall.

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Electric Tank Replacement

Straight swaps and gas-to-electric conversions. Common in older village homes and condos where gas service is limited.

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Hybrid Heat Pump

The most efficient option, eligible for PSEG-LI rebates and the 30% federal tax credit. Requires basement or garage with enough air volume. See rebates →

About permits and code: We pull a permit with your town on every install and meet Nassau and Suffolk plumbing code. Some homeowners ask why we bother. Two reasons: it is the law, and it protects your homeowners insurance and your home's value at resale.