Same Day Hot Water Heater Replacement Long Island

40+

Years on Long Island

10,000+

Homes Served

24/7

Real Person on Phone

4.9★

Customer Rating

Long Island Water Heater Specialists

Domino Home Services is Long Island's go-to family-owned water heater company. We install gas tank water heaters, electric hot water heaters, hybrid heat pump water heaters, and Navien and Rinnai tankless units across Nassau and Suffolk County, with same day or next day install on most calls. Every install includes the permit, code-compliant venting (atmospheric flue, power vent, or condensing PVC), a new T&P valve, expansion tank where required, sediment trap on gas connections, fresh anode rod, a registered manufacturer warranty, and our 1-year labor warranty. Phones answered 24/7 by a real person.

Our Services

Long Island Water Heater Services Under One Roof

Same day installation, replacement, emergency repair, and tankless conversions across Nassau and Suffolk. Pick what you need, or call and we'll route you right.

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Installation & Replacement

Same day tank-for-tank swaps, gas-to-electric conversions, hybrid heat pump installs. Permits pulled, code-compliant, old unit hauled away.

Water heater install →

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Tankless Replacement

Navien and Rinnai tankless water heaters. Tank-to-tankless conversions including gas line upsizing and venting upgrades.

Tankless replacement →

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Emergency Repair

No hot water, leaking tank, burst water heater, pilot won't stay lit, rumbling unit. Diagnose first, fix or replace second.

Emergency repair →

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Water Heater Types

Gas, electric, hybrid heat pump, indirect, power vent. Compare types and pick the one that fits your home.

Compare types →

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Water Heater Sizes

40, 50, 75, or 80 gallon? Tankless GPM? Family sizing guide for typical Long Island homes.

Sizing guide →

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Water Heater Brands

Rheem, Bradford White, AO Smith, Navien, Rinnai. The five brands we trust on Long Island homes.

See brands →

About Domino Home Services

Long Island's Same Day Water Heater Company Since 1981

Domino Home Services is a family-owned water heater specialist on Long Island. Three generations, four decades, one phone number. Our techs roll out of Hauppauge every morning with trucks loaded for same day or next day water heater replacement across Nassau and Suffolk Counties.

We focus on water heaters and nothing else. Tank, tankless, gas, electric, hybrid heat pump. New installs, emergency replacements, and warranty service. The narrow focus is how we keep the trucks stocked right and the response times tight.

More about us →

Domino Home Services water heater service vans on Long Island since 1981

EST.1981

Pay Monthly · Wisetack

Replace Today. Pay Monthly. No Hidden Fees.

Don't let an unexpected water heater failure blow up your budget. Spread the cost across simple monthly payments with Wisetack financing through Domino Home Services. Soft credit pull, no impact to your score, approval in about 30 seconds.

APRs from 0% $500 – $25,000 3 to 60 month terms No prepayment penalty No origination fees

See Financing Details → Open Wisetack Calculator

0%

Starting APR for Qualified Buyers

Approval check30 sec

Credit impactNone

Payment optionsUp to 6

Phone applicationYes

Same Day Service to 130+ Long Island Towns

From the North Shore to the Hamptons, we cover Nassau and Suffolk County water heater replacement and repair every day. A sampling of the towns we run trucks to this week:

Huntington Smithtown Babylon Brookhaven Hempstead Levittown Garden City Massapequa Bay Shore Commack Patchogue Lindenhurst Ronkonkoma Port Jefferson Stony Brook Hauppauge Mineola Oyster Bay

See All Service Areas →

How It Works

From Phone Call to Hot Water

Every Domino water heater install runs through the same four steps. Boringly consistent. The way it should be.

1

You Call

A real person picks up 24/7. Tell us the symptoms and age of unit. We give a real price range in 3 minutes.

2

Truck Rolls

Loaded with the common 40, 50, and 75 gallon tanks plus standard fittings. Tech texts on the way.

3

We Install

Permits pulled, code met, work area covered. Old unit hauled away. Most jobs done in 2 to 3 hours.

4

Hot Water

Written labor warranty, manufacturer warranty registered in your name, financing if you want it.

Customer Reviews

What Long Island Homeowners Say

A few recent reviews. We answer for our work, every job.

★★★★★

"Called at 9am with a leaking tank. New unit installed and hot water back on by 1pm. The tech walked me through everything. Honest pricing, no surprises."

Mike R. · Huntington

★★★★★

"Switched from a 12-year-old tank to a Navien tankless. The crew handled the gas line upsize and the wall vent. Whole job done in one day. Couldn't be happier."

Sarah K. · Smithtown

★★★★★

"Family business that acts like one. They told me a repair on my old unit didn't make sense and put in a new heat pump that's already saving on my bill. PSEG rebate paperwork was already filed when they left."

Anthony D. · Levittown

Save More

Long Island Water Heater Rebates & Tax Credits

The right water heater install can pick up serious savings from PSEG Long Island, National Grid, and the federal heat pump tax credit. We file the paperwork on your behalf.

PSEG-LI

Heat Pump Water Heater Rebate

Up to substantial rebates for Energy Star certified heat pump water heaters on Long Island.

See programs → National Grid

High-Efficiency Gas Rebate

Qualifying high-efficiency gas and tankless water heaters on the National Grid network.

See programs → Federal

Federal 30% Tax Credit

Heat pump water heaters earn a 30% tax credit (capped) under the Inflation Reduction Act.

See programs →

Decide Smart

Buying Guides Written by the Techs

Plain-language guides on the questions Long Island homeowners actually ask us before a water heater install.

Decision Guide

Repair vs Replace

Three questions that decide whether your water heater is worth fixing or replacing.

Read → Buying Guide

Tank vs Tankless

Which water heater format is right for your Long Island home.

Read → Local

Hard Water on Long Island

Why LI water heaters fail early and what to do about it.

Read →

FAQs

Long Island Water Heater Questions

A handful of the questions we get every day. See the full FAQ page →

Do you really install water heaters the same day on Long Island?

Yes. Most calls placed before noon get a brand new water heater installed the same day. Trucks roll out of our Hauppauge depot loaded with the common 40, 50, and 75 gallon tanks plus standard fittings. Same day or next day install across Nassau and Suffolk.

How much does water heater replacement cost on Long Island?

It depends on water heater type, tank size, venting setup, and any code corrections needed. We give a real price range over the phone in 3 minutes after a few quick questions. No bait pricing. Replacement cost details →

Do you offer financing?

Yes. Wisetack financing: $500 to $25,000, APRs from 0%, terms 3 to 60 months, no prepayment penalty, no origination fees, soft credit pull only. Most decisions in 30 seconds. Financing details →

What areas of Long Island do you serve?

All of Nassau County and Suffolk County. From Manhasset to Montauk and everywhere in between. See all 130+ towns →

Are you licensed and insured?

Yes. Fully licensed and insured. Permits pulled on every install, all work meets Nassau or Suffolk plumbing code. Family-owned since 1981.

Same Day Hot Water Heater Replacement on Long Island

Long Island Water Heater Services Under One Roof

Installation & Replacement

Tankless Replacement

Emergency Repair

Water Heater Types

Water Heater Sizes

Water Heater Brands

Long Island's Same Day Water Heater Company Since 1981

Replace Today. Pay Monthly. No Hidden Fees.

Same Day Service to 130+ Long Island Towns

From Phone Call to Hot Water

You Call

Truck Rolls

We Install

Hot Water

What Long Island Homeowners Say

Long Island Water Heater Rebates & Tax Credits

Heat Pump Water Heater Rebate

High-Efficiency Gas Rebate

Federal 30% Tax Credit

Buying Guides Written by the Techs

Repair vs Replace

Tank vs Tankless

Hard Water on Long Island

Long Island Water Heater Questions