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Hot Water Heater Replacement And Your High Efficiency Furnace
When you switch to a high efficiency gas furnace the question which usually arises is what to do about the hot water heater. High-efficiency hot water heaters are not readily available. Installing your new furnace may lead to the question of what to do with the hot water heater and you need a solution. Hot water heaters are commonly placed in the basement, right under the bathroom and kitchen, where the hot water is put to use. Changing from an electric hot water tank to a gas fuelled hot water tank often means that the new gas heater needs to be located near the chimney, and well away from the kitchen and bathroom. The consequence of this move is you will have to wait longer hot water to flow to the tap. An alternative is to get a side-wall vented gas hot water tank which does not need a chimney. When you do this the tank can stay in its location near the kitchen and bathroom.
A major problem may arise when you upgrade from an older low efficiency furnace to a new high-efficiency furnace, which is vented through a side wall. Only the hot water tank now is vented through the chimney. The heat from the hot water heater is not enough to warm up the chimney sufficiently on its own, and it may be necessary to reline the chimney to prevent corrosion. This can be expensive so it will be better, when using a chimney-less high efficiency furnace, to side-wall vent the hot water tank also, and seal up the old chimney. Unfortunately, side-wall vented hot water tanks are considerably more costly than thechimney vented type and are also usually more noisy.
Instantant hot water heaters, with no storage tank, are now being used more and more. These are a good option and are probably less costly to use
When replacing the furnace, you may want to look at integrated systems, that heat your house and your water and also provide ventilation. Devices known as “combo” units provide house and water heating fropm one device. New appliances which have advanced, integrated systems will provide required ventilation as well as space and water heating. For some replacements, these integrated appliances are your best choice.
At some point we will all have to replace our old low efficiency water heaters with newer types which save energy and money.
Hot water heating systems have changed over the last few years. The major choice used to be what size of tank to buy. Now energy-efficiency and tank size must be taken into consideration. We can now also consider a tankless water heater, which is a recent major technological breakthrough in water heating systems.These new systems create huge energy savings and can also save space.
Modern instant water heaters can provide an immediate supply of hot water on demand. They don't need a tank to store hot water. In addition, the life of an instant hot water heater is twice that of the traditional tank systems, because the risk of corrosion and rust-out is much lower.
With a gas fuelled unit, a gas burner heats the water. This may be either natural gas or propane. If you use natural gas you must have a gas line going to where the water heater is located. These heaters easily provide plenty of hot water for one major use at any time. This type of unit is a good replacement for the common 40-gallon hot water tank.
Electric models heat use an electrical element to heat the water. To run an electric tankless water heater, the heater must be wired through an electrical circuit breaker panel. Electric instant hot water heaters cost less to buy and to operate, but they usually have less capacity than a gas fired system. This may make them impractical for larger households which need considerable quantities of hot water frequently.
The capacity of an instant hot water heater is quoted as Gallons Per Minute (GPM) which is the maximum amount of hot water the heater will supply per minute. Commonly high-volume heaters have a GPM rating from 8 to 12.
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