Green Plumbing Layouts, Tankless Water Heaters and
Hot Water Demand Systems

A green plumbing layout will save you water, money and provide you with additional convenience whether you have a tankless water heater or a tank type when coupled with a hot water demand system.

Are tankless water heaters green? What about hot water demand systems? What is a green plumbing layout?

Green plumbing layouts - what are they and what can they do for you?

A Green Plumbing layout is when residential or other plumbing layouts are designed for maximum efficiency and minimum wasted energy and water. Most plumbing layouts are not planned, they just happen.

The blueprints do not show plumbing layouts, it's left up to the person doing the actual plumbing as to how the pipes are laid out. Often the person doing the piping is un-trained and their biggest concern is getting the job done quickly. As a result, the home owner must wait for hot water longer than necessary thus wasting water.

The cold water plumbing is not much of an issue. Generally people don't have to run the cold water down the drain to get cold water, it's already cold enough. The hot water is another story. The hot water side is where opportunity lies for going green.

Billions of gallons of wasted water

Hundreds of billions (yes billion with a "B") of gallons of water are run down the drain every year as the result of people waiting for their hot water.  Grundfos, RedyTemp, Metlund and other sources reveal a water savings of anywhere from 10,000 to 16,000 gallons per year for a typical family who installs a demand hot water system.

There are over 50 million single-family homes in the U.S. and many apartments, condos, and other residences that could benefit as well.  But just taking the 50 million homes and multiplying it times 10,000 gallons of water save per year results in a theoretical savings of 500,000,000,000 gallons of water per year.

Add in the potential savings due to apartments, condos, and multi-family housing and we are talking about trillions of gallons of water wastefully run down the drain in the U.S. alone.

Much of the time the water you use has been pumped from somewhere and possibly treated as well.  That takes energy, and generating energy usually causes the emission of green house gases, at least if it comes from a natural gas or coal burning plant.  Unless you have a septic system, your drain water probably ends up at a sewage treatment plant where more energy is consumed treating it.

For the cold water efficiency one has to rely on ones appliances since as noted earlier cold water in the cold water piping is generally not wasted.  However, the hot water side of the story is one of waste and inefficiency.

Hot water plumbing is where the problems lies

Since in many instances you purge the cooled off hot water from the hot water lines before you use the hot water, you want the hot water piping from the water heater to the fixtures to be as short as possible. Traditionally plumbing when done with rigid pipe tends to follow joists and walls, and is piped with 90 degree elbows and straight sections of pipe. 

This type of plumbing layout is wasteful of water and pipe. Make the pipe runs directly from the heater straight to the fixtures.  That minimizes the length of the pipe, and consequently the amount of water that needs to be purged before the hot water arrives.

Green Tankless Water Heaters

Consider the using point-of-use tankless water heaters if possible. This virtually eliminates the waste of water from purging and that long wait for hot water. Insulate your hot water piping.  You will get your hot water faster and the outlet temperature will be a little higher, so you use less hot and more cold when taking a shower.  Saves energy.

Whole house tankless water heaters are a mixed bag. You waste more water because tankless water heaters have to heat the water first since there isn't a tank full of hot water already waiting. But you save energy, since you don't have that full tank of hot water leaking heat into it's surroundings 24 hours a day.

Hot water demand systems are very green

If you do opt for a whole house tankless water heater then get yourself a hot water demand system.  Hot water demand systems such as the Metlund D'Mand System and the Chilipepper CP6000 eliminate the water being run down the drain while you wait, and they deliver your hot water to you faster, which is always nice. They are green water conservation products.

These pumps only run for a few moments until the water reaches the fixture and then they shut off. With so little running time they usually consume less than $1 or $2 per year in electricity costs.

By combining a tankless water heater and a hot water demand system you get the best of both green worlds, reduced energy consumption and heavy duty water savings. If you loop your plumbing from fixture to fixture, and then place the demand system at the end of the run, all of your sinks and fixtures will have fast hot water and no wastage. A great way for going green.

If you are planning on building a new home, or you are remodeling an older home, then consider green plumbing alternatives to the standard practices. Keep pipe runs as short as possible. Insulate the hot water pipes. If using a tankless water heater install a demand hot water system.

By implementing a green plumbing layout or strategy you can add convenience, save water, reduce energy consumption, reduce green house gas emissions, and make the world a better place for all of us.

Chilipepper Sales 1380 Greg St., # 221 Sparks Nevada,  89431  PH (775)-359-1223