Trutankless

Why We Install Trutankless in Phoenix

Trutankless lives in a narrow but real corner of the Phoenix water heater market. Most homes here have a gas line at the heater, and for those homes a gas tankless (or a Bradford White tank) is the right call. Trutankless is the answer when the gas line isn't there, or when running one would cost more than the heater itself.

The homes where Trutankless makes sense in Phoenix tend to fall into a few categories. Fully-solar homes where the goal is to align every electrical load with the panels' production curve. ADUs and casitas where the existing structure has electrical service but no gas stub. All-electric homes where the homeowner has decided not to add gas. Detached additions where the gas main is on the other side of the property. Older homes where the gas line to the heater location is undersized for tankless and replacing it is impractical. Newer builds in HOAs that restrict gas appliance additions. In all of these cases, the question is "electric tankless or electric tank," and the choice between Trutankless and a generic electric tankless is mostly about build quality and service support over the long haul.

Solar homes deserve a closer look because the case is structural, not just preference. A tank water heater holds 40 or 50 gallons hot all day whether anyone is using hot water or not, which means it draws power overnight and during shoulder hours when the panels aren't producing. A Trutankless only draws when you're actually running hot water, so the load matches the production curve instead of fighting it. For homeowners who built or retrofitted around solar and want every kilowatt the panels produce to do useful work, electric tankless is the cleanest residential answer in the category, and Trutankless is the build we install in it.

When Trutankless doesn't make sense: a typical Phoenix home with an existing gas line to the heater. In that scenario, a gas tankless (Navien) or a gas tank (Bradford White) costs less to install, costs less to operate, and recovers faster on heavy demand. We'll tell you so before quoting the Trutankless. Honest fit matters more than a sale.

The Trutankless Gen3

The Gen3 is the model we install. Before any conversation about flow rates or temperature rise, the gating question on every Trutankless install is electrical service, and that's where most of the deal-breakers live. Electric tankless water heaters draw substantial current when they run. The Gen3 is sized for whole-house demand in a residential setting, which means it needs significant breaker capacity and a panel with the headroom to support it.

In practice, that usually means a 200 amp service panel with enough open breaker space and load budget to add the heater on its own dedicated circuits. Older Phoenix homes on 100 or 125 amp service almost always need a panel upgrade first. Even on 200 amp panels, we run a load calculation before we quote the heater install, because the panel is about more than its main breaker rating: the existing AC, electric range, electric dryer, EV charger, and any other large loads all factor in. A panel that looks fine on paper sometimes doesn't have the headroom once the math is honest.

This is the part of a Trutankless project most homeowners don't think about until late in the process, and we'd rather surface it on the first visit than on the day of install. Sometimes the answer is the panel works as-is. Sometimes it's a subpanel or load management. Sometimes it's a full panel upgrade and we coordinate with an electrician. We'll tell you which one applies before you commit.

Sizing for Phoenix is the other technical piece. Inlet water in Phoenix runs warm most of the year, which is good for tankless capacity, but winter inlet temperatures drop noticeably and the heater has to work harder to hit the same outlet temperature. We size the Gen3 against winter inlet rather than summer, which is the failure mode on under-sized tankless installs (the unit performs all summer and falls short in January).