Tankless water heater installation begins with removing the traditional water heater tank and replacing it with an electric or gas heating unit to heat water directly. Also known as ‘on-demand’ water heaters, tankless water heaters heat only the water needed as it travels through the heating unit to the tap for immediate use. Any time you aren’t using hot water, no energy is wasted on heating. On average, homeowners can save up to 35% of heating costs with a correctly installed tankless water heater. At GAP Plumbing, we can give you an endless supply of hot water when you need it while saving you money and helping you conserve water and energy.
Why do I want a Tankless Water Heater?
Tankless water heaters save money. The energy factor for a regular tanked water heater averages 0.60. Because tankless water heaters provide hot water only when needed thier energy factor ranges from 0.82 to 0.96.
Continuous hot water. Regular tanked water heaters store enormous amounts of water that it heats periodically throughout the day. As the water is being used, cold water is added to the tank, lowering the temperature of the already heated water. Tankless water heaters provide hot water on demand. If three people are showering and the washing machine is calling for hot water, no one experiences a drop in temperature.
Saves space. Traditional tank water heaters can take up to 16 square feet of valuable floor space. Tankless water heaters, however, are a fraction of the size and can be installed on virtually any wall, indoors or outdoors.
Longevity. Tankless water heaters have a typical life expectancy of up to 20 years—twice as long as a tank-style unit.
Go Green. Tankless water heaters are ENERGY STAR® approved by meeting the strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the Department of Energy.
What do I look for in a Tankless Water Heater?
Where in your house do you need hot water? Some homeowners prefer a single point-of-use tankless water heater for one appliance they don’t use every day, while others who live in smaller homes opt for whole-house tankless water heaters. Either way, it’s important to determine where in your home you want your new water heater located and how many gallons of water it is expected to handle daily. Our experienced Houston Tankless Water Heater technicians can help you determine what unit meets your needs.
What size of Tankless Water Heater do I need?
There are two parts to this equation:
Temperature of the water coming into the house.
Flow rate of your tub and shower valve.
It begins with the degree the water is at when coming out of the ground. The colder it is outside, the colder the water is coming into the house. In the summer Houston’s water temp is around 86 degrees, in the winter the water is about 58 degrees. The average American showers at 106 degrees. The goal is to reach 106 degrees in the summer and the winter. In the summer to reach 106 degrees, if the water temp is 86, you only need a 20 degree rise in temperature – this means the water can move faster through the tankless unit to achieve the goal while maintaining a higher water pressure.
In the winter to reach 106 degrees, with an average temperature of 58 degrees, you nee a 48 degree rise in temperature, meaning the water must move slower through the tankless unit, also meaning a lower water pressure. This is where flow rate or gallons per minute (GPM) comes into play.
Older tub and shower valves have a flow rate of 4 gallons per minute (GPM). New Federal law mandates that newer tub and shower valves have a flow rate of 2.5 GPM. There are other factors that are not considered in comparing tankless units such as, if you have galvanized or copper pipes, how much mineral build up has accumulated inside the pipe that is affecting the flow rate. If you are not sure, purchase a 5 gallon bucket and fill it up at the tub. How long did it take to fill? If it took 2 minutes then you are getting the 2.5 GPM, if it took less time, just over a minute, then your valve is rated at 4 GPM.
Just to reiterate: For water temperature we use an average of a 35 degree rise, and for flow rate we use an average of 4 GPM.
Call for a free estimate 281-435-0178
Products & Services
Drain stoppages and cleaning
Sewer jet cleaning and video line inspections
Leak detection and repair
Backflow prevention and installation, testing and repair
Plumbing fixture replacement
Valve repair and replacement
Piping repair and replacement
Natural or LP (propane) gas piping & appliance installation
Sewage and drainage lift stations (residential)
Recirculating pump repair and replacement
Solar water heating systems and components
Heat recovery unit connections
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Health and Safety Modifications
Service Area For Tankless Water Heaters: Entire Houston Area