Tankless Water Heater Temecula | Williams Mechanical Co
Thinking about converting from a tank water heater to tankless? Williams Mechanical Co installs and services Navien, Noritz, and Rinnai tankless units throughout Temecula. We handle the full gas line conversion, venting, and permitting — one call, one crew. Temecula's hard water averages 250 PPM calcium, so we also include a descaling plan with every install to protect your investment long-term.
Frequently Asked Questions
How much does it cost to convert to tankless in Temecula?
A full conversion including the Noritz EZTR40 — a Japanese-made all-in-one kit with venting included — runs around $5,000 installed. For homeowners wanting a premium option, we also install the Navien NPE. Free estimates and Wisetack financing available.
How long does a tankless conversion take in Temecula?
Most conversions are completed in one to two days. The Noritz EZTR40 is designed as an all-in-one replacement kit so we're not sourcing separate venting components — cleaner install, less time. And if you need hot water during the conversion, we offer rental water heaters so you're never without.
What if my furnace shares a vent with my water heater?
This is common in Temecula homes. When the furnace and water heater share a flue, the tankless unit needs its own dedicated vent run. In that case the Navien NPE is often the better choice since it uses a smaller PVC exhaust — and we'll give you an accurate quote once we see the existing setup. Shared venting situations can add to the overall cost.
Call (760) 908-8896 for a Free Estimate
Full tankless conversion from $5,000 — Noritz EZTR40 unit, venting, install included. Free estimates, Wisetack financing available.
Most tankless water heater conversions in Temecula take one to two days from start to finish. Our crew handles everything — gas line work, venting, installation, and cleanup. If you need hot water during the conversion, Williams Mechanical Co offers rental water heaters so your household is never without hot water. We show up on time, work clean, and leave the job site the way we found it.
Why Choose Williams Mechanical Co
Williams Mechanical Co is one of the few contractors in the Temecula area holding three active CSLB licenses — C36 Plumbing, C10 Electrical, and C20 HVAC. That means when your tankless conversion requires a gas line upgrade or an electrical panel update, we handle it in-house. No subcontractors, no coordination headaches. We are factory trained and authorized installers for Navien and Noritz, and we are veteran owned and operated. Wisetack financing is available for qualified customers.
Serving Riverside and San Diego
Temecula's water supply averages 250 PPM calcium hardness — one of the highest in San Diego County. That level of mineral buildup is tough on tankless units and requires descaling every six months to maintain efficiency. Homes in Wine Country and Harveston tend to be larger with higher hot water demand, making a properly sized high-output tankless unit critical. Williams Mechanical Co knows Temecula's water and knows how to spec the right system for your home.
Federal Tax Credit
Many high-efficiency tankless water heaters — including qualifying Navien and Noritz models — may be eligible for a federal energy efficiency tax credit of up to 30% under the Inflation Reduction Act. This could put up to $1,500 back in your pocket. We recommend consulting your tax professional to confirm eligibility for your specific installation and circumstances.
