A typical water heater replacement takes between 2 to 4 hours for standard tank units and 4 to 6 hours for tankless systems, depending on your home's existing plumbing configuration and the complexity of gas or electrical connections required.
The speed of your water heater replacement hinges on several factors, starting with the type of unit being installed. Traditional tank water heaters—the most common choice—can be swapped out relatively quickly because the connection points are standardized. Our technicians begin by shutting off the water supply and draining the existing tank, a process that typically takes 30 to 45 minutes depending on sediment buildup. Once the old unit is disconnected and removed, the new heater is positioned, secured to its pad, and connected to the incoming water line, outgoing hot water distribution, and either the gas line or electrical supply. This entire installation phase usually takes 1.5 to 2.5 hours for a standard replacement.
Tankless water heater installations require additional time because they demand more extensive modifications to your home's infrastructure. These units operate on-demand and require dedicated gas line sizing, proper venting through your roof or exterior wall, and electrical connections for the control panel. The venting installation alone can add 1 to 2 hours to the project, as our licensed technicians must ensure all connections meet code requirements and local building standards. We've completed hundreds of these installations across the region, and our familiarity with both Noritz and Generac tankless systems—as an authorized dealer for both brands—allows us to work efficiently while maintaining the highest installation standards.
What distinguishes our approach is how thoroughly we stock and prepare our service vans before every call. Every service truck carries the water heater unit, all necessary fittings, dielectric unions, expansion tanks, relief valves, and code-compliance materials. This means we're never making return trips or waiting for parts to arrive from a supplier. We've invested in this inventory model over our 19 years in business because we understand that water heater failures create genuine hardship—especially in homes with multiple bathrooms or young children. By arriving with the parts and materials most repairs require, we reduce delays and get your hot water restored, often the same day.
The timeline can vary slightly based on your home's age and condition. Older homes sometimes have corroded shut-off valves or undersized gas lines that require attention before installation. If we encounter these issues, we address them immediately rather than scheduling a callback. Our Master Plumber License (MPL-38162) certifies that our team understands these complications and can handle modifications safely and to code.
From the moment our truck arrives to the moment hot water flows through your taps again, expect a straightforward process: assessment, drainage, removal, installation, testing, and cleanup. Most homeowners are back to their normal routine the same day.
Blackmon Plumbing has been providing water heater replacement services throughout the region for nearly two decades, with licensed technicians and service vehicles stocked for most installations so your job gets done without unnecessary delays.