Water Heater
Tank, tankless, and hybrid heat-pump water heaters installed to Texas code with proper venting.
Materials
What we install vs. what corner-cutters use.
Tank brand
Rheem or Bradford White with 6–12 year warranty.
Bottom-shelf big-box brand with 3-year warranty.
Why it matters: Better tanks have thicker steel and better anodes.
Tankless
Rinnai/Navien/Rheem with proper gas resize and Cat III vent.
Undersized gas line and B-vent (wrong material).
Why it matters: Wrong gas or vent kills tankless units in 2–3 years.
Expansion
Thermal expansion tank pre-charged to your static pressure.
No expansion tank.
Why it matters: Without expansion, thermal cycling shortens tank life and can trigger the T&P.
Process
A predictable path — with real durations.
Assessment
1 hourConfirm capacity needs, gas/electric supply, venting path.
Old unit removal
1 hourDrain and haul-off.
New unit install
3–6 hoursSet unit, connect water/gas/electric/vent.
Expansion, T&P, condensate
1 hourInstall expansion tank, route T&P and condensate to safe location.
Startup & test
30 minFire, purge air, test all fixtures, walkthrough.
Why us
Why homeowners pick Modern Builders for water heater.
Wrong install kills water heaters early. We check the gas line size, size the flue, install expansion tanks, and route T&P valves to a safe spill location — every time. Tankless installs get a full gas line assessment. Most existing 1/2" gas lines can't feed a 200,000 BTU tankless — we upsize to 3/4" or 1" if needed. Skipping that step causes the unit to short-cycle and fail in 2–3 years. Condensate drains on high-efficiency units are neutralized before they discharge, so they don't eat your slab or PVC.
FAQs
Answers before you ask.
Tank or tankless?+
Tankless if you have gas, want endless hot water, and don't mind higher upfront. Tank if simplicity is priority or your gas can't be upsized practically.
How long do they last?+
Tanks: 8–12 years. Tankless: 15–20 years with annual descaling. Hybrid: 12–15.
Do I need a permit?+
Yes — Texas requires permitting on all water heater replacements. We handle it.
What size do I need?+
2–3 people: 40 gal tank or 6 GPM tankless. 4–5 people: 50 gal or 8 GPM. 6+: 75 gal or 10 GPM.
Related reading
Go deeper before you decide.
Get a quote — we do it right.
Fixed-price proposals, real timelines, no corners cut. Tell us about your water heater project.
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