Why your next water heater might not be a tank at all
In short: Switching to an instantaneous water heater can modernize your home's plumbing. This guide breaks down the technical requirements and logistical steps involved in replacing a traditional hot water tank with a modern tankless system.
The transition to a tankless system involves more than just swapping units; it often requires significant infrastructure upgrades. Because these heaters provide water on demand, they may necessitate a larger gas line run from the meter and a dedicated electrical outlet, which might require a licensed electrician.
Key installation steps include draining the old tank, drilling exterior holes for PVC fresh air intake and venting, and connecting copper piping. To facilitate constant hot water availability at all taps, a recirculation pump may be powered by fitting a cross-over valve onto the most distant plumbing unit.
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Sources
- Summary by Intellect · source: How to Install a Tankless Water Heater | Ask This Old House
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