Water Heater Repair & Installation · Merrick · ZIP 11520, 11566

Water Heater Repair & Installation in Merrick, NYSoft Water, Big Houses, Flood Basements

All Island Plumbing NY repairs and replaces gas and electric tank water heaters across Merrick (ZIP 11566, parts of 11520), Town of Hempstead. Call (516) 360-9493. We answer calls 24/7 and are open Monday through Saturday (closed Sunday).

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Smell gas? Leave the house first, then call the gas utility's emergency line or 911.

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Serving Nassau County and western Suffolk County, Long Island, NY
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Answering calls 24/7 · Open Mon–Sat, closed Sunday

Water heater work in Merrick comes down to house size, the water and, south of Sunrise Highway, where the heater sits relative to the flood line. See our Merrick page and the general water heater repair and installation page.

Sized for big houses

The Census Bureau's latest survey puts the median Merrick home at 7.5 rooms, with 55% having four or more bedrooms; the average owner household is 2.97 people. Big houses often have two or three full bathrooms, some far from the heater. If a distant shower takes a long time to run hot, that's usually the pipe run, not the tank. If the family runs out of hot water, we check for sediment and a failed dip tube first, then size a replacement to the bathrooms and the people.

Very soft water

Liberty Utilities' Merrick system draws from 16 wells in the Magothy aquifer. It adds caustic soda to raise the pH and a phosphate compound, Calciquest, to inhibit corrosion of plumbing and hold iron and manganese in solution; three wells have iron filters. Its report shows hardness of only 1.6 to 19.3 mg/L, so when a Merrick heater gives out, heavy scale is less likely to be the reason. We look at the fittings, the anode rod, the relief valve and the gas control before blaming the tank. A yearly flush still clears whatever sediment collects.

Oil houses and gas conversions

The survey shows 72% of homes heating with gas and 23% with fuel oil. In oil houses, the boiler often makes the hot water. Switching to gas usually means a separate gas tank heater with its own gas line and vent; National Grid's Natural Gas Conversions line is 1-877-696-4743. We install the heater and the gas piping. We don't service oil burners, and we don't sell or deliver oil.

Getting the heater above the water

Our overlay of FEMA's flood map puts about 49% of the hamlet's area in the high-risk zone. The NY Rising plan for Bellmore and Merrick proposed resilient design guidelines for homeowners covering mechanical systems and the placement of home appliances. For a water heater, that means height: in a basement that has flooded, we set the replacement on a stand where the venting and gas connection allow, so the burner and controls sit higher. A heater that has been in salt water stays off until it's checked and usually has to be replaced.

Using less hot water

Liberty's report notes that New York's environmental agency asked Long Island water suppliers to cut peak pumping by 15%, and suggests water-saving showerheads and faucets. Lower-flow fixtures also stretch a tank's hot water further.

More for Merrick and nearby

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Water heaters in nearby towns

Water heaters in Bellmore Water heaters in Freeport Water heaters in Wantagh All Nassau County areas

Questions

Water heaters in Merrick: FAQ

Our water is soft. Why did our heater fail early?

Very soft water leaves little scale, but anode rods, fittings and gas controls still wear out. We check what failed before replacing.

Our heater flooded in a storm. Can it be relit?

No. Keep it off. Flooded burners and gas valves are usually not safe to reuse.

Can a new heater go higher in the basement?

Often, on a stand, if the vent and gas line allow. In a flood-prone basement, we recommend it.

Sources:U.S. Census Bureau, ACS 2024 5-year (B25040) and B25010, B25018, B25041 from the Census Bureau summary file; Liberty Utilities New York, Merrick Operations District 2026 Consumer Confidence Report (wells, treatment, hardness, conservation); National Grid, Long Island phone numbers (Natural Gas Conversions); FEMA National Flood Hazard Layer overlaid on the Census 2020 Merrick CDP boundary (Atlas, Oct. 30, 2026); NY Rising Community Reconstruction Plan, Bellmore/Merrick (March 2014; resilient design guidelines).