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Tankless Gas Propane Water Heaters For Unlimited Hot Water - Gas Propane Tankless Water Heater By Bosch 

Special Propane - Gas Tankless Water Heaters Working  Without Electricity.

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                          Propane Unlimited Tankless Water Heater Operation - No Moving Parts
So, your hot water tank has sprung a leak and you want to know why I switched to a Tankless Propane Water Heater and am I happy with it.
 

I guess I first started thinking about Propane Tankless Water Heaters during my travels. I noticed in the U.K., Europe, Pacific Rim countries and many other parts of the world, that everyone uses Propane Tankless Unlimited Water Heaters. Common sense told me there had to be a reason.

Fuel costs have historically been higher in the rest of the world, resulting in more efficient water heating equipment. I learned that Propane Tankless Unlimited Water Heaters  are 25-30% more efficient than tank types which have to burn 25-30% longer just to keep the water in the tank hot. Also, because they have single or multiple flues running up the middle of the tank, when the burner is off cool air can travel through and draw significant heat back out of the stored water which is very wasteful and inefficient. My Propane Tankless Unlimited Water Heaters  has no tank to keep hot or to lose heat through, and the burner only comes on when hot water is needed. This is how I save 30% and contribute 30% less flue gas emissions to the environment.

I next found out that even though a Propane Tankless Unlimited Water Heaters costs more than the tank type water heater, they last 3 to 4 times longer. In North America we are used to throwing away the whole water heater every 5 to 7 years when it leaks. Propane Tankless Unlimited Water Heaters  are designed to be repaired - you never throw them out. This, to my mind, is investment and conservation smart.

I guess the clincher was the time we were traveling with the Murrays and one night we all had to share a small cottage - five adults and four kids. We had driven all day, we were hot and dusty and decided we could clean up and go out for supper. We had nine leisurely showers one after the other and never ran out of hot water - and yes, you guessed it, there was a Bosch Propane Tankless Unlimited Water Heaters mounted right on the wall of the kitchen unit. We just couldn't believe it!

I bought my Bosch Propane Tankless Unlimited Water Heaters when my tank heater failed, and its small size (31"H x 18"W x 9"D) and the fact that it uses no floor space was really helpful when we remodeled our kitchen. My friend Ron, who's a plumber, said it was just as easy to install as a tank type.

If you asked me if there were any negative factors, I would really have to say no, but there are two things you should be aware of. First, because the heaters are flow activated and operate on a pressure differential, it's very important to have a minimum of 30 psi water supply pressure. The other point is that while you can run a shower continuously and never run out of hot water, you can't run more than one shower or major appliance at the same time. However, this doesn't worry us as most homes, even with 2 or 3 bathrooms, rarely run baths or showers at the same time because of temperature fluctuations and the fact that with heavy demand, a tank type heater soon runs out of hot water and you have to wait for it to heat up again. Propane Tankless Unlimited Water Heaters never keep you waiting!

Are we happy with our Bosch Propane Tankless Unlimited Water Heaters ? We save up to 30% on our gas bill, conserve energy, save space, protect the environment, never run out of hot water and we have a smart, long term investment that is going to save us money for as long as we burn gas - you bet we are!




 Bosch 330PN

Low Volume Tankless Water Heater with Pilot Ignition. Ideal For Low Flow Camp or Cottage Use. This Handy Small And Compact Unlimited Water Heater is Also Popular In RV and Marine, Hot Tubs, Portable Bush Showers, Animal Grooming, Mobile Blind Cleaning Trucks, Mobile Food Service Trucks Etc.


  • Standing pilot ignition
  • 78% average efficiency
  • Mounts on wall for easy installation
  • Compact and lightweight
  • Modulating gas valve to control temperature
  • Pressure relief valve included
  • CSA approved
  • 15-year warranty
  • Piezo Igniter

Power Input
Natural Gas: 30,735 - 74,900 Btu
LP Gas: 30,735 - 74,900 Btu
Min. Flow To Activate 0.5 Gal Per Minute to Activate
Flow Rates 45°F rise @ 2.6 gpm
55°F rise @ 2.1 gpm
65°F rise @ 1.7 gpm
77°F rise @ 1.5 gpm
90°F rise @ 1.3 gpm
Energy Factor .64
Thermal Efficiency 78%
Dimensions 28.8" h x 12.2" w x 8.5" d
Weight 25 lbs.
Modulating Gas Valve yes
Ignition



Standing Pilot



              
Reg.$1299
Internet Special:
$1099



 Bosch 520PN - Not Available!!

Tankless Instant Hot Water Heater with Pilot Ignition. Ideal For Low Flow Camp or Cottage Use. This Handy Small And Compact Unlimited Water Heater is Also Popular In RV and Marine, Hot Tubs, Portable Bush Showers, Animal Grooming, Mobile Blind Cleaning Trucks, Mobile Food Service Trucks Etc.

  • Standing pilot ignition
  • 78% average efficiency
  • Endless hot water for one major application at a time
  • 5˝ double-wall type B vent – Natural draft.
  • Modulating gas valve ensures constant temperature at varying flow rates
  • Pressure relief valve included
  • Available in natural gas (NG) or liquid propane (LP)
    15-year warranty

Power Input
Natural Gas: 31000-117000 Btu
LP Gas: 31000-117000 Btu
Min. Flow To Activate 0.5 Gal Per Minute to Activate
Flow Rates 45°F rise @ 4.2 gpm
55°F rise @ 3.4 gpm
65°F rise @ 2.9 gpm
77°F rise @ 2.4 gpm
90°F rise @ 2.1 gpm
Energy Factor NG-.69, LP-.79
Thermal Efficiency 78%
Dimensions 25.75" h x 16.75" w x 8.5" d
Weight 33 lbs.
Modulating Gas Valve yes
Ignition
Optioanl Accessory



Standing Pilot
Power Vent For Horizontal Vent



      
          
Reg.$1299
Internet Special:
$1099



 Bosch 520HN - Not Available!!

Tankless Instant Hot Water Heater with Hydro-generated Ignition. Ideal For Low Flow Camp or Cottage Use. This Handy Small And Compact Unlimited Water Heater is Also Popular In RV and Marine, Hot Tubs, Portable Bush Showers, Animal Grooming, Mobile Blind Cleaning Trucks, Mobile Food Service Trucks Etc.


  • Hydro-Generated Ignition
  • 80% average efficiency
  • Endless hot water for one major application at a time
  • 5˝ double-wall type B vent – Natural draft.
  • Modulating gas valve ensures constant temperature at varying flow rates
  • Pressure relief valve included
  • Available in natural gas (NG) or liquid propane (LP)
    15-year warranty

Power Input
Natural Gas: 28000-117000 Btu
LP Gas: 28000-117000 Btu
Min. Flow To Activate 0.5 Gal Per Minute to Activate
Flow Rates 45°F rise @ 4.2 gpm
55°F rise @ 3.4 gpm
65°F rise @ 2.9 gpm
77°F rise @ 2.4 gpm
90°F rise @ 2.1 gpm
Energy Factor NG-.80, LP-.84
Thermal Efficiency 80%
Dimensions 29.75" h x 18.25" w x 8.75" d
Weight 40 lbs.
Modulating Gas Valve yes
Ignition
Optioanl Accessory



Hydro-generated
Power Vent For Horizontal Vent




      
          
Reg.$1399
Internet Special:
$1199

Tankless advantages

Tankless water heaters and Tankless Propane gas Water Heaters provide many advantages:

  • Long term energy savings: Though a tankless gas water heater typically costs more initially, it usually costs less to operate because of lower energy use—since it only heats water when required instead of continuously maintaining a tank of heated water. Even homes or buildings with high demand for hot water may realize some level of savings. If instant hot water at taps at limited hours is a priority, a recirculation system can be accommodated by using an aquastat and timer to decrease the added heat loss from the recirculation system. If the storage tank of an Propane Gas  heater is highly insulated, so that the outer surface of the tank is only slightly warmer than the ambient air, the savings with a tankless heater is less.
  • Unlimited hot water: Though flow rate determines the amount of hot water the Tankless gas Water Heater can produce, it can deliver it at that flow rate indefinitely. However, this can also be an ecological disadvantage, as running out of hot water limits use, but a tankless gas water heater provides no such limit.
  • Less physical space: Most tankless gas water heaters can be mounted on a wall or internally in a building's structure. This means less physical space must be dedicated to heating water. Even systems that can't be mounted on walls take up less space than a tank-type water heater.
  • Reduced risk of water damage: No stored water means there is no risk of water damage from a tank failure or rupture, though pipe or fitting failure remains possible.
  • Temperature compensation A temperature compensating valve tends to eliminate the issue where the temperature and pressure from tankless gas water heaters decrease during continuous use. Most new generation tankless gas water heaters stabilize water pressure and temperature by a bypass valve and a mixing valve incorporated in the unit. Modern tankless are not inversely proportional, because they regulate the amount of water they heat and discharge, and therefore stabilize water temperature by using a flow control valve. Temperature change, not flow speed, is the issue the water heater must address. The wider the temperature rise, the less flow from the unit—the smaller the temperature rise, the greater the flow. The flow control valve, in conjunction with thermistors, maintains a stable temperature throughout the use of the tankless gas water heater.
  • Safety Tankless gas Water Heaters precisely control water temperature, which means dangerous temperature levels and spikes are less likely.

Tankless water heaters—also called instantaneous, continuous flow, inline, flash, on-demand, or instant-on water heaters—are gaining in popularity. These high-power water heaters instantly heat water as it flows through the device, and do not retain any water internally except for what is in the heat exchanger coil. Copper heat exchanger are preferred in these units because of their high thermal conductivity and ease of fabrication.

Tankless heaters may be installed throughout a household at more than one point-of-use (POU), far from a central water heater, or larger centralized models may still be used to provide all the hot water requirements for an entire house. The main advantages of tankless water heaters are a plentiful continuous flow of hot water (as compared to a limited flow of continuously heated hot water from conventional tank water heaters), and potential energy savings under some conditions. The main disadvantage of these systems are their high initial costs (equipment and installation).

Operation

The tankless gas water heater is normally turned off, but is equipped with flow sensors which activate it when water travels through them. A negative feedback loop is used to bring water to the target temperature. The water circulates through a copper heat exchanger and is warmed by gas. Since there is no finite tank of hot water that can be depleted, the heater provides a continuous supply. To protect the units in acidic environments, durable coatings or other surface treatments are available. Acid-resistant coatings are capable of withstanding temperatures of 1000°C.


Common in Europe and Japan for 75 years, tankless water heaters are still fighting for market share in Canada. The rising cost of energy may give them the boost they need to replace conventional storage tanks.

Recently my gas water heater sprung a leak. It had been working away faithfully in the basement since before we bought the house 17 years ago. Since it’s a rental from the local gas utility, I called them and they installed a new unit. It didn’t occur to me to ask about installing a tankless water heater, and they didn’t suggest one.

Many communities and utility companies are now promoting tankless water heaters as a more energy efficient option than the conventional storage units used in most North American homes. Also known as demand or instantaneous water heaters, tankless units heat water only as it is required, eliminating the need to have 200 or more litres of water sitting in a heated tank, waiting to be used.

Information from Green Venture, a non-profit environmental group, and The City of Hamilton, Ontario says that most families use hot water for a cumulative total of about one hour per day. “The other 23 hours you purchase electricity or gas to heat water is unnecessary,” says Green Venture.

Having a constantly heated tank of water is like leaving your car running all night for the morning drive to work, suggests retailer Tankless Low Energy Systems of Whitby, Ontario. On its website (www.tanklesswaterheaters.ca), the company says that “most gas tank type water heaters lose 6 F degrees per hour because they have a flue sucking the BTUs out of the stored hot water.”

Green Venture says that heating water accounts for about 20 per cent of a household’s total energy use, and that tankless water heaters can save anywhere from five per cent to 70 per cent of the energy required to heat water. That equates to annual household energy savings of about 30 per cent, says Green Venture.

Tankless water heaters have several other advantages as well. They take up much less space than conventional tanks and can be hung on a wall. Problems with mineral or scale build-up are unlikely, because there is no water storage and they can be used with water softening systems. They are a proven technology, having been in use in Europe and Asia for more than 75 years. Finally, manufacturers say they last longer than storage water heaters.

So why do most of us stick with conventional hot water heaters?

Money. Tankless water heaters can cost up to three times as much as conventional heaters.
Until recently, there was also a question of whether tankless water heaters could handle the capacity required for whole-house installations. Many of the tankless heaters currently in use are small, supplemental units installed at the point of use, such as a remote bathroom or the laundry room.

Natural Resources Canada (NRCan) says that “depending on overall water usage, they may not have the capacity to supply an entire home with hot water. For this reason, they are often used as booster heaters to supplement another water heating system.”

However, in recent years, manufacturers have been making larger tankless units for whole-house applications. “A relatively new tankless technology – the low mass water heater – is capable of supplying much more hot water to the home,” says NRCan. “These systems are typically gas-fired with electronic ignition and power exhaust, which means they are also more efficient than conventional tankless heaters. They can be connected to an external storage tank, if necessary.”

To find out what size of water heater is right for your house, you’ll need to figure out how much water flow you need to meet your home’s peak hot water demands. A report from the U.S. Department of Energy says to list the number of hot water devices you expect to have open at any one time, and add up their flow rates.

Next, select a manufacturer that makes a unit that can handle that much flow.
“Most demand water heaters are rated for a variety of inlet water temperatures,” says the Department of Energy. “Choose the model of water heater that is closest to your needs.”

A report by Platts Research & Consulting (available on the B.C. Hydro website, www.bchydro.com) says that electric heating element and gas requirements for tankless water heaters are higher than for storage water heaters. A gas tankless heater uses more BTUs per hour, so it may require larger gas lines and vents. An electric unit may require 8- or 10-AWG copper wiring, says the Platts report.

One drawback to buying a tankless water heater could be that because they are not yet common in Canada, it may not be easy to find someone to install and maintain your unit.

However, tankless water heater manufacturers are convinced that storage units are on the way out, and that before long, we’ll all be saying, “No tanks”.






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