New hot water heater water smells like plastic

New hot water heater water smells like plastic. If you have a gas water heater, you must thoroughly inspect and repair any leakage you discover.

Leaking gas is not only dangerous, but it can also be harmful to your health.

Find out why your water heater is emitting a burning plastic odor and how to deal with it. If an electrical problem causes the smell, you should have the electrical wiring checked and repaired by an expert.

New hot water heater water smells like plasticnew hot water heater water smells like plastic 2022

This is very common to have a burning plastic odor. If it does, though, you must check it for probable system flaws.

Some of the causes why your water heater smells like burnt plastic are listed below.

Excess dust

Trash and dust accumulate in your water heater. The dust particles in the house come from the air.

Whenever you switch on your hot water system after a lengthy period, dust and debris burn, emitting an odd odor.

This odor is powerful enough to make you suspect your water heater’s proper operation. You may be tempted to phone the fire department, but resist the urge.

Rather, check the water heater to determine the source of the issue and relax. In most circumstances, this problem will go away on its own. Therefore you won’t have to do anything.

Wiring issuewiring issue

Because of the burning wires, your water heater is likely to smell like burning plastic or rubber if the wiring is incorrect.

Switch off the switches that provide electrical energy to your water heater to start fixing the issue.

To set the electrical problem, contact a licensed electrician. Do not attempt to repair this issue because the bad wire will need to be replaced entirely.

Corroded Anode Rod

The water heater is built of metal that can rust if exposed to water. To address this issue, manufacturers install magnesium rods in all water heaters.

On the other hand, the magnesium rod corrodes quicker than the water heater, discharging electrons into the tank that protects the water heater from rusting.

There will come a moment when you would need to change the anode rod. During this time, you will notice a weird odor that smells like a rotten egg.

Burning insulationburning insulation

The scent of burning rubber or plastic is every day when insulation is burned. This might happen as a result of improperly placed insulation or outdated insulation.

Water heaters usually have a packed insulation coating on the outside to keep it from getting too hot to hold.

This insulation, however, should never come into direct contact with flames. If the insulation is exposed to fire, this will burn and emit a burning rubber or plastic odour.

Examine your heater to see if it’s the source of the odor of burning plastic or rubber. If that’s the case, remove your water heater’s base cover to inspect the burner section.

Air Pressure issue

Whenever the water heater’s air pressure is too low, a stench akin to burnt plastic will issue from the heater’s position. This unit’s exhaust pipes expel the vapor generated by boiling water in the heater. air pressure issue

The air pressure in your hot water system must be utilized appropriately for the exhaust to perform correctly. If you don’t do this, a few of the vapor generated will be trapped inside the heater, giving your home a burnt rubber or plastic odor. 

You can change your old water heater with an elevated water heater that avoids most of the problems listed above. 


The new hot water heater water smells like plastic. As we all are aware of heaters and they are indispensable for us in winter.

If your heater smells like plastic, you can check its wiring or check the burning insulation process.

In this article, we have given you the best reasons and fixes for the new water heater that smells like plastic.

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