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Upgrade to a high-efficiency, on-demand (tankless) water heating system in your O’Fallon home or business. Our expert plumbing team installs compact, wall-mounted units that heat water only when needed — saving you energy and reducing monthly utility bills. With a tankless water heater, you get a continuous supply of hot water, longer system life, and less risk of leaks or water damage. Trust Alexander Plumbing to recommend the right size and model for your needs and deliver seamless, code-compliant installation. Contact us now for a free consultation and estimate.
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