Hot Water – Residential Hot Water Conservation Products

Hot Water Conservation Is Harder Than Cold Water Conservation

Water conservation products for cold water conservation are prolific. There are low flow fixtures; actually these are now mandatory in most areas, low flow shower heads, water conserving appliances, low flow toilets and other flow restricting devices.

There are also things like dual-flush toilets, toilet dams, drip irrigation systems, and all sorts of other water conservation products.

A lot of these conservation devices do not really provide conservation for those individuals who are already practicing good water habits. For instance, low flow kitchen faucets only save water when someone leaves the water running based on time. Filling the sink takes the same amount of water no mater how slow the flow is. The same is true with filling a pitcher of water.

Water conserving appliances often need the user to use special cycles, which are often not used.

Most of these water conservation products do not address one of the largest wasters of water in the home… the hot water plumbing layout. Long pipe make for long delays in getting hot water. Low flow fixtures make the problem worse by slowing down the hot water.

Slow hot water loses more heat energy to the piping as it moves toward the fixture, thus the wait becomes even longer and more water gets run down the drain. So what can we do?

Water Heater Pumps

There are a class of water heater pumps known as hot water demand pumps. These are small pumps that mount under the sink furthest from your water heater. When you want hot water you demand it by pressing a start button. When you push the button it starts the pump which pumps the hot water from the water heater to your fixture at high speed.

When hot water reaches the pump, an electronic controller shuts the pump off. Now when you turn on the faucet you get instant hot water and no water was run down the drain.

The pump uses the cold water line to return the cooled down hot water that was left in the piping from the last use back to the water heater inlet. They use very little energy to operate since they run for a very short time and only when hot water is demanded by the user. Typically they consume about $2.00 per year in electricity for a family of four.

Solar Water Heaters

Demand hot water systems work fine with all types of solar systems. Some types of solar systems have longer than normal hot water distribution lines and demand hot water systems are particularly good for those types of systems. It’s not what type of fuel you use free or not, it’s how long the distribution piping and how long a wait it is before you get hot water. The longer you have to wait, the more water you are running down the drain.

Tankless Hot Water Heaters

Demand hot water pumps work great with tankless hot water heaters as long as the demand system pump has enough power to turn on the water heater. Tankless water heaters take 10 to 20 seconds longer to get hot water to the fixtures than a tank type water heater. This makes the demand system that much more valuable with tankless units.

Hot water conservation with a demand system not only provides significant water savings, but it does it in a way that adds the convenience of fast hot water. This makes it much more likely that the user will actually use it, and water conservation will actually take place.

Recent Article: Residential Hot Water Conservation

Solar hot water

Tankless water heater Installation

Hot Water Recirculation

Hot Water Recirculation Systems for Slow Hot Water Problems

I discovered a hot water recirculation system I had not seen before while surfing the web today, it’s called the Astro Express Hot Water Re-circulation System and it’s made by Armstrong. The system seems to be very similar if not identical to the Grundfos Comfort system. It has a pump at the water heater and a temperature controlled valve under one or more sinks.

The pump is called the “ASTRO 20 BU-T CIRCULATOR”, and the valve is called the the “ASTRO EXPRESS VALVE”. Not much special about the pump, it’s a standard hot water circulating pump with very little power… with 1/25 of a horsepower. The valve takes four hoses and is both temperature controlled and apparently adjustable.

The pump is much too small to operate a tankless water heater, so if you don’t have a tank type water heater then this device will not work for you.

I just wrote a review of the system and published it as an article on my website. Astro Express Hot Water Recirculation System

It is a warm-water circulating system that will increase the energy used and eliminate the ability to obtain “cold” water from your fixture without first purging the warm water from the cold water line. It is in the same class as the Grundfos Comfort system, the Laing Autocirc1, the RedyTemp, and others.

The Astro express system allows you to place more than one valve in the system in case you have a branched plumbing layout that has separate long pipe runs.

The pump has a built in timer so you can reduce the energy wastage by leaving the pump off during periods that you would not expect to be using hot water like when you are asleep or when no one is home during the day.

Well that’s all I have for the Astro Express Hot Water Recirculation System.

Instant Hot Water! – Home Improvement Idea

There are a lot of home improvement ideas floating around out there, and every one has his own opinion of what a good home improvement idea is. Well I think instant hot water from your fixtures is a great idea! It will save you not only time, but thousands of gallons of water, and it can save you energy too.

Saving water and energy means you are reducing your carbon footprint and taking steps to going green. Help yourself and help our planet at the same time.

Probably most people don’t think about plumbing when they think about home improvement projects. After all, the plumbing layout has been already implemented and so changing the plumbing system into a green system by improving the plumbing layout is an unlikely project.

However, fast hot water is easy to obtain by using a hot water demand system.

Few would argue that it’s no fun standing there waiting for the hot water to arrive at the fixture. You stand there and watch the water run down the drain. But you don’t have to; you can install a hot water demand system in a single afternoon. Demand hot water system pumps can be obtained for less than $200, making it a fast and inexpensive home improvement idea or do-it-yourself project.

A demand hot water system delivers the hot water from your existing water heater at a higher flow rate than your faucet can deliver. That way the hot water gets to the fixture more quickly reducing your wait time.

More importantly, you don’t run water down the drain while you wait. When you turn on the fixture you get instant hot water. The demand pump connects between your hot and cold water lines under the furthest sink from your water heater. When you want hot water you “demand” it by pressing a button.

The pump starts up and send hot water to the fixture in seconds, returning the cooled off hot water that was in the hot water pipes back to the water heater through the existing cold water lines. When hot water reaches the pump, it shuts off. Now when your turn the spigot you get instant hot water.

Some models of demand hot water systems connect up to your plumbing with faucet supply hoses just like the ones already under your sink.

Hot water demand systems can also operate with tankless water heaters unlike traditional hot water recirculation systems. Just make sure the demand hot water system you purchase is powerful enough to turn on your tankless water heater. Some models like the Metlund S-50T and S-70T don’t have much power, and won’t turn on many models of tankless water heaters.
These quick hot water systems, at least the demand systems, use very little electricity since they run for such a short time, and only when you demand it. Typically they consume less than $2.00 per year in electricity costs.

With all the benefits of saved time, saved water, saved energy and reduced carbon foot print and the small initial investment, a hot water demand system should be in nearly every home. Don’t wait any longer, install a hot water demand system today and get instant hot water when you turn on your fixture – a great home improvement idea!