Guide to Installing a Storage Water Heater

Installing a storage water heater is a project that a moderately skilled person can usually handle.  When installing a storage water heater, you need to carefully consider the type of unit, fuel source, location, necessary plumbing and electrical connections, and follow all safety precautions.

Choosing a storage water heater

First, determine whether you want a tankless or conventional storage water heater singapore, your fuel source tank capacity, energy efficiency rating, and physical size that will fit the installation location. Storage heaters are available in capacities between 20 and 100 gallons. Make sure to pick the appropriate capacity to meet your household’s peak hot water needs.

 Locating the water heater

The water heater should be located as close as possible to water and drain lines. It should be in an area with adequate space for servicing and airflow, either in a basement, garage, closet or utility area. The area needs to have a floor drain or catch pan with a drain line in case of leaks.

Water and drain connections

Turn off the home’s water supply and drain the old tank completely once the power/fuel source is disconnected. Place a bucket under the water lines before disconnecting anything in case water remains. Use copper pipes or recommended flex lines to connect the cold and hot water lines to the new unit, making sure to attach hot lines to hot and cold lines to cold inlet pipes.

Fuel supply connections

If using gas, ensure gas piping is the right size to supply sufficient fuel. Connect the approved gas flex line with a shutoff valve to the gas supply line. Use pipe joint compound on threads. Perform a leak test by coating connections with soapy solution to look for bubbles. If using an electric unit, ensure proper 230-volt receptacle and wiring size and connect per manufacturer instructions.

Filling the tank

Reopen the cold water supply valve and allow the tank to fill completely, venting all air from the unit using hot water faucets. Verify water flows freely. Check for any leaks in fittings, valves or pipes while the tank fills and pressurizes. Running water through a newly installed tank also helps remove soldering residue and sediment inside pipes.


Install carbon monoxide detectors if utilizing gas or related fuels. Ensure proper grounding of electric units and bonding if required. Verify proper ventilation is available. Keep all flammable items away from fuel-burning appliances. Enable emergency water shutoff and fuel/power supply shutoffs in case rapid shutdown is needed.

To summarize

Ensure that the project is meticulously planned, an ideal heater is selected and all safety precautions are adhered to. Water, fuel, and electrical connections should be paid close attention to.