Residences without a gas line or propane tank can likewise enjoy the advantages of on-demand hot water by setting up tankless units powered by electrical energy. These units, which heat water with thick copper rods, are quieter and about a third smaller than gas or propane tankless heaters. And due to the fact that they do not need vents, they can be set up practically anywhere, including under sinks and in little closets.

One disadvantage to electrical systems is its minimal output, which peaks at 36 kilowatts, or about 123,000 Btus. That may suffice to provide a whole house in locations with warm groundwater, however in chillier climates they’re much better suited to point-of-use service, where the need for hot water doesn’t get too high. Whichever type you select, it will require enough amperage at the main panel and heavy-gauge wires.
Also, electric heaters last just about half as long as gas units: Normal service warranties are three to 5 years. As soon as the heating elements fry, it generally costs about as much to replace the whole heater as it does to switch in brand-new components.
Tankless Water Heater in San Fernando Installation
What you and your plumbing technician need to evaluate prior to setup day:
1. GAS LINE: For the burner in a tankless heater to perform effectively, it needs to be connected to a gas-supply line that delivers sufficient volume at enough pressure. Oftentimes that indicates the diameter of the supply pipeline needs to be increased to 3⁄4 inch. And if the pressure fails, the gas company will have to adjust the regulator on the meter.
FYI: Some tankless systems, such as those made by Rheem, have the ability to work with a standard 1/2- inch gas line, supplied it isn’t longer than 24 feet.
2. VENTING: Noncondensing tankless gas heaters use stainless-steel vents that can withstand high exhaust heat. Condensing units have a cooler exhaust, and utilize less costly PVC pipes. A concentric vent, which has an exhaust pipe inside a larger air-intake pipeline, simplifies installation since only one hole requires to be cut in the wall.
FYI: Normally, vent runs have been limited to simply 10 feet. But more effective fans, like those in Rinnai’s Sensei series, now allow vents to add to 150 feet.
3. WATER HARDNESS: Scale deposits that form in a heat exchanger (or on electric heating elements) decrease heat transfer and constrict water circulation. Scale will not be an issue if you already have whole-house water-softening. However if your water isn’t being softened, and its firmness surpasses 120 milligrams per liter, then it’s worth buying a treatment system.
FYI: A dedicated, point-of-use cartridge like the TAC-ler water conditioner (Stiebel Eltron) changes firmness without including salt or other chemicals.
Outside Tankless Water Heater in San Fernando
Consider the benefits of hanging a heater outdoors, if your climate and regional codes allow.
Saves space: That’s one less appliance you have to make room for within.
Simple to set up: The built-in exhaust vent eliminates having to cut a huge hole (or 2) through the side of your home.
Easy to service: A plumbing professional can get to it at any time, whether you’re house or not. But remember …
Structure regulations: You may need consent from your local structure department to put it outside.
Cold weather: Internal heaters keep components toasty down to − 22-degrees F, but exposed pipes should be insulated and wrapped in heat tape that switches on instantly in freezing temperature levels. Frozen pipes are less of a concern south of the Mason-Dixon Line.
Tankless Water Heater: What You Need to Know Before You Buy in San Fernando
What to Understand About Tankless Water Heaters in San Fernando