As plumbing evolves, tankless water heaters are becoming less of a ‘luxury appliance.’ Still,  they not for everyone. The draw of a tankless water heater is that they don’t hold a tank of hot water. Since a tankless water heater heats water at the time of the demand, there isn’t a huge tank of water to be maintained at a consistently hot temperature.

Tankless operation

Here are some things a homeowner should know before taking the purchase of a tankless water heater into consideration. The size of the heater should be determined by the number of people in the home and their habits. Because it heats water only at the time of demand, a small tankless water heater only offers hot water to one faucet. If multiple people want to take showers, or if the washing machine or dishwasher is on, someone is going to end up being mighty cold. Larger tankless water heaters offer more water but are more expensive.

Gas is a necessity

Tankless water heaters require gas service because of the nature of the way they heat up water. It just needs too much draw too fast for an electric one to make sense unless it’s only for one or two people.

The type of gas line in the home matters

Tankless heaters require a certain type of gas line. The typical line for a regular water heater tank is too small for a tankless water heater. 200-220k BTU's for average, a tankless uses 180-199k. When a home has a gas dryer, a gas furnace, and a gas range, the tankless water heater will have to ‘share’ the gas with them, and the smaller line will come up short. A larger gas line, or high-pressure gas line, will solve this problem.

The water quality matters.

Valley water is hard enough to affect the performance, so the home needs a filter or water softener for best results.

Venting

Because the burners for a tankless water heater are high-powered, they require special venting, both exhaust, and intake vents in a smaller space.

Installation

The installation of a tankless water heater is a skilled service. A savvy homeowner or even an untrained plumber will not have the skills necessary to install a tankless water heater.

Energy savings

Tankless use 30-50% less energy than tank units. Depending on the cost of the current water heater, this could offer substantial savings. However, the system requires yearly maintenance by an authorized service rep, a charge which, combined with the higher initial cost, should be considered.

Tankless water heaters can be installed in the wall or outside in warmer climates, as they can automatically warm themselves. In-wall or outdoor units can be a space saver. Venting can be done either through a roof or a wall, unlike traditional gas water heaters, which have to go through the roof. If you’re considering the purchase of a tankless water heater, understanding these pros and cons can help you make a more informed decision.

If you need a licensed, bonded, experienced plumber for plumbing installation and service in Chandler, Gilbert, Mesa, Queen Creek, Ahwatukee or San Tan Valley call Norfleet Family Plumbing Heating and Air at 480-681-1764.