How close can PEX be to water heater?

Asked By: Teolinda Mamoiti | Last Updated: 1st May, 2020
Category: home and garden home appliances
4/5 (21 Views . 13 Votes)
Does PEX Connect to Water Heaters? Unfortunately, PEX can't be directly connected to a water heater. First, you need to extend a pipe 18 inches from your water heater, and then you can connect the PEX to the pipe.

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Keeping this in view, can PEX be connected directly to a water heater?

PEX can't be directly connected to a water heater. First extend a pipe 18 in. from your water heater and connect the PEX supply to the pipe.

One may also ask, why is PEX plumbing bad? PEX failures Piping fails when the pipes are exposed to chlorine that is within the water, exposure to direct sunlight before its installation. Furthermore PEX pipe is vulnerable when it comes in contact with such solutions as petroleum products and oxygen. It can leach toxic chemicals from pipe material also.

In respect to this, why is PEX banned in California?

Church, executive director of the Plastic Pipe and Fittings Association. Uponor Wirsbo said its PEX pipe was introduced in California in 1990 and that the product helps solve problems in areas with aggressive soil conditions that copper pipe cannot solve.

Does PEX reduce water pressure?

Pex/plastic pipe have higher flow rates than copper. However pex fittings ID (inside diameter) is smaller than the pipe of the same size, so it actually does impede water flow.

38 Related Question Answers Found

How long do SharkBite fittings last?

How long can the SharkBite fittings last? SharkBite fittings and PEX pipe carry a 25-year warranty against any manufacturer's defect as long as the item has been installed in accordance with the installation instructions and complies with local code.

Is Blue PEX OK for hot water?

Red PEX pipe carries hot water. Blue PEX pipe carries cold water. White PEX pipe can be used for either hot or cold water.

Can SharkBite fittings be used on a water heater?

All SharkBite water heater connectors are approved for use on electric or gas water heaters with a flue vent. SharkBite offers braided and corrugated flexible water heater connectors with and without ball valves. Connectors with ball valves provide a shutoff on the supply side of the water heater.

Can I bury PEX pipe?

PEX tubing is approved for direct burial outdoors, a practice most often necessary when running a water supply line to a house. PEX, since it can expand, resists freezing more effectively than rigid pipe, but PEX can still burst if water freezes in a line. Embedding PEX in sand protects it from any rocks in the soil.

Are SharkBite fittings temporary?


Quick-connect and push-to-connect fittings are not permanent, but should only be reused for temporary installation. The lubricant on the collet of a SharkBite wears off after a while, and the O-ring of either fitting may stretch or wear out.

Can hot and cold PEX touch?

Plumbing 101: Hot and Cold Water Lines Should Not Touch. The picture above is of PEX hot and cold water lines that have been run through the framing and are touching each other the entire way. This has passed the rough plumbing inspection and is ready for insulation and drywall.

Which is better copper or PEX?

PEX doesn't degrade like copper, higher PSI rating freezing pipes will still burst, but PEX will be able to handle more freezing water than copper. PEX Tubing is much more resistant to freeze-breakage than copper or rigid plastic pipe. PEX is cheaper/easier to install and you generally don't need as many fittings.

What are the disadvantages of PEX?

PEX Plumbing Disadvantages
  • PEX may leach BPA and other toxic chemicals.
  • PEX is extremely sensitive to UV light.
  • PEX can be damaged by chemicals and pests.
  • PEX can't be installed in high heat areas.
  • PEX is semi-permeable, which means liquid can enter the pipe.

Does PEX meet code?

Although PEX tubing is approved by all major building codes and major model plumbing codes, it still has not received acceptance with local codes in some parts of the country. For example, PEX tubing has only recently been allowed for use in the state of California.

Which is better PEX crimp or clamp?


Crimping and clamping create equally reliable seals that will not leak when performed properly. Stainless steel clamp rings resist corrosion more effectively than copper crimp rings, which can be a major benefit in direct-burial applications. PEX clamps also tend to be easier to remove.

Does PEX leach chemicals into water?

They found that PEX pipes released more odors and leached more chemicals compared to polypropylene. To date, more than 150 contaminants have been found in water that flowed through PEX pipes in these and other studies. In some pipes, researchers have seen significant leaching even after 30 days of use.

What is the difference between PEX A and PEX B?

Flexibility - PEX-A is the most flexible, allowing for it to be fastened by cold expansion, which allows the end to be fluted prior to inserting the fitting. PEX B is not expandable and you should never expand the end of a PEX-B pipe. Kink-Resistance - PEX-A has the greatest resistance, PEX-B the lowest.

Is PEX OK for drinking water?

The inner pipe for drinking water is made of a plastic called cross-linked polyethylene (PEX). There are no health risks associated with drinking water from PEX pipes. A few types of PEX-pipe may cause prolonged undesirable taste and odour if the water remains in pipes over time.

What is the best type of PEX to use?


PEX-A, which has the most flexible tubing and best freeze- and kink resistance, is ideal for use with kitchen and bath fixtures. PEX-B is slightly less flexible and less freeze-resistant. Both types of tubing come in three colors—red, white, and blue—in diameters ranging from 1/4-inch to 3 inches.

Does PEX have BPA?

PEX is a form HDPE (high density polyethelene) also know as cross linked polyethylene tubing. The use of BPA in plastics has come under fire for its adverse health affects and although PEX does not contain BPA it contains a number of other chemicals.

How much can PEX pipe bend?

Flexible: PEX can be bent 90 degrees (right-angle) to a radius that correlates with pipe diameter. For 1/2-inch PEX pipe, the radius is 5 inches.