Before you jump in let's have a look at the argument between tank and tankless water heaters and why to buy a tankless water heater.

Consider how much your water heating costs, is this predominetly keeping a full tank load of water up to a specific temperature? No matter how good the tank's covering is, it will still cool over time and the heater will cut in to take the water temperature back up. Costly?... I would think so! A huge waste or a resource?... That's a given!

Now, what time do you use hot water? Morning and Evening then, your tank will be cooler and will turn on the heating cycle so you have hot water for later. Under heavy demand a tank can run out of hot water as it heats too slowly to keep up with demand.

This heat up - cool down daily cycle could be costing you $50 or more each and every month.

The increasing cost of energy means we have to change the way we heat our water, whether it is domestic water or commercial usage is of little concern, unnecessary energy usage still costs and in tough financial conditions, nobody can afford to waste money unnecessarily.

The advantage of tankless water heaters is they only demand energy when you turn the hot faucet on, this means that your energy savings will pay for the tankless water heater in around 3-7 years. The less of hot water you use, the quicker you recover your outlay. If you are without a partner or family and only occasionally have showers at home, your energy bill will reflect your low consumption because tankless water heaters don't experience standby heat loss.

The operational life of a tankless water heater is much longer than a tank system. Most tankless water heaters will give you more than 20 trouble free years of operation and this is often double what a tank heater provides, provided water quality is good and the systen is well looked after and serviced.

If you specify the right tankless heater for your family needs, you'll never experience cold showers again. Some tankless heaters can run upto 4 showers at one time, depending on the input temperature of the water, so they can be sized to suit even the largest households.

When it comes to installation, tankless water heaters have significant advantages over large tank systems. They are wall mounted, small, light weight, can be fitted both indoors or outdoors and some can even be flush mounted between studs. With gas tankless water heaters, you can select for vertical or horizontal venting and the majority of tankless water heaters offer a wide choice of options, installation accessories and safety systems.

Tankless water heaters are well suited to a broad range of applications. They can be used in boats, mobile homes and RV's, radiant heating systems, for boosting solar heating in cloudy weather and when built into multiple configurations, can provide sufficient on demand hot water for appartment complexes and small, medium, even large commercial situations, like restaurants and gyms.

When thinking about all important energy efficiency, the tank water heaters are a poor 40% to 60% energy efficient, the remainder of the input is wasted either through the walls of the tank or up the flue. Tankless water heaters are 80% - 95% for nat gas or tank propane and up to 99% efficient when electric. You will also save up to 15%-20% on your energy bill following change over to tankless water heaters, simply because your water heater does not have to keep a load of water at a pre-defined temperature.

Tankless water heaters, when sized correctly, will provide for all your total hot water needs for a long time.