Tankless water heaters or on-demand water heaters provide users with a constant supply of hot water at any given time by passing cold water through a heating element which in turn produces ready to use hot water at the turn of the tap.
Hence, tankless water heating systems typically utilize less energy over a longer period of time as compared to tank-type water heating systems as no additional energy is needed to maintain the water temperature. However, several factors need to be taken into account when one is considering a tankless water heating system.
1- Gas lines
As tank-less type water heating systems provide hot water on-demand, a larger 3/4" gas line is required as compared to the 1/2" gas line typically used by tank-type systems. If you are looking to convert to a tankless system, a new gas line will need to be run to the gas meter, thus incurring additional costs.
2- Installing electrical outlets
Another factor that you should take into account when considering tankless system is, the fact that a dedicated electrical outlet will need to be installed. True to their namesake, an on-demand water heating system produces hot water at the turn of the tap which means that the system would need to utilize a significantly larger amount of electricity.
Consequently, a dedicated electrical outlet will need to be installed by a qualified electrician which in turn can prove to be quite costly.
3- Exhaust system
When deciding upon either a tankless or tank-type water heating system, one needs to consider the fact that both systems utilize entirely different venting systems. Thus, when one is converting to a tankless type water heating system, the contractor will need to design and retrofit a new venting system.
Not only does this incur additional costs, but it also may mean that new openings will need to be made.
4- Additional costs and high retail price
While a cheaper energy bill can prove to be an attractive proposition, one also needs to take into account the fact that tankless water heating systems can be quite expensive.
For example, a tankless water heater is typically triple the price of a storage-based water heater. Along with this, the costs of installing additional wiring, retrofitting additional components and running new gas lines can override any savings that you may gain in the long-run.
5- Required Pre-filters & Maintenance
While a tankless water heating system may be able to provide hot water instantaneously, the high temperatures produced makes the system much more vulnerable to mineral build-up from hard water. On the long-term, this causes the water heater to degrade in efficiency which results in higher energy costs and reduced water heater lifespan.
Consequently, all tankless water heater manufacturers require a pre-filter to be installed in order to prevent mineral buildup. This filter will need to be constantly changed to guarantee effectiveness.
While tankless water heaters may have plenty of benefits, it would be more prudent to consult with the experts at Large Plumbing. With their years of experience in the construction and plumbing industry, the friendly experts at Large Plumbing will be glad to help you choose the right water heating system for your home.