Tank or tankless water heater — which is better in Las Vegas?
Choose a tank if upfront cost matters most or you're selling within a few years — $1,800–$3,200 installed with an 8–12 year life here. Choose tankless if you want endless hot water, need the floor space, and will commit to annual descaling: $4,500–$7,500 installed with about a 20-year life.
The hard-water factor
Las Vegas water at 16–17 grains per gallon is the deciding variable most comparisons ignore. Scale is the leading cause of premature tankless failure locally. A tankless unit that gets flushed once a year will outlive two tanks. One that never gets flushed can fail inside five years.
Payback
Tankless uses roughly 20–30% less energy for water heating. On typical valley usage that is a modest monthly saving — real, but not the reason to switch on its own. The reasons that hold up are endless hot water, recovered space, and the longer service life.
Tank vs tankless in the Las Vegas Valley
| Tank | Tankless | |
|---|---|---|
| Installed cost | $1,800 – $3,200 | $4,500 – $7,500 |
| Expected life here | 8 – 12 years | ~20 years with descaling |
| Maintenance | Annual flush | Annual descaling (required) |
| Hot water supply | Limited by tank size | Continuous |
| Space used | Closet or garage footprint | Wall-mounted |
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More on this: Tankless Water Heaters in Las Vegas