Water heaters announce their retirement two ways in Austin: the slow way (rusty water, popping sounds, a pilot that quits weekly) and the 6am way (a garage lake and a cold shower). Either way, the next call matters — installation quality determines whether the replacement lasts eight years or fifteen in Central Texas's famously punishing hard water, and quotes for identical jobs vary by four figures across the metro. So we did the sorting in advance: seven outfits with real water-heater track records, what the work should cost in 2026, and the fastest route to a licensed installer with the full price quoted up front.
This is editorial research, not advertising: no company paid to appear here, and none were contacted for placement. Beaver A.C. & Plumbing is a referral service, not a contractor, so we're deliberately unranked and excluded. Ratings drift week to week, so we describe durable reputations rather than quoting stars that stale by the month. Verify current reviews and the license on your paperwork before hiring anyone — including anyone we match you with.
The specialist: a five-star-caliber shop whose entire identity is water heaters, softeners, and water quality — which in Austin's mineral-heavy supply is the whole battlefield. For tankless conversions especially, the shop that thinks about scale prevention before the sale is the shop whose installs age well.
The 4.9-star-caliber standing from 2026 metro rankings applies to their bread-and-butter work, and heater replacement is exactly that: high-volume, review-driven, strongest across Austin and the northern suburbs.
Pure-play residential plumbing with free estimates and same-day appointments — the posture that matters most on the 6am-garage-lake version of this purchase. Heaters at volume, no HVAC distractions, metro-wide.
The suburban rankings' consistent top-lister, with responsive scheduling and clean residential installs — the reliable middle path between boutique and fleet for a straightforward tank swap.
The polished-process fleet: standardized flat-rate pricing, tracked techs, real project management. On heater installs the process discipline shows up as correct code work — expansion tanks, pans, venting — without negotiation.
The multi-trade heavyweight (4.7-caliber across thousands of reviews, per Best Pick Reports) whose electrical bench matters here more than people expect: heat-pump water heaters and electric conversions often need circuit work, and one crew holding both licenses collapses the project.
The all-brands institution with the 100% satisfaction guarantee — and in water heaters, all-brands means the recommendation follows your house (gas line size, vent path, closet dimensions) rather than a distributor agreement.
| Company | Focus | Known for | Service area |
|---|---|---|---|
| Cold Is On The Right | Heaters & softeners | 5-star-caliber treatment focus | Austin & west metro |
| Proven Plumbing & Air | Plumbing + HVAC | 4.9-star-caliber 2026 standing | Austin & north suburbs |
| Reliant Plumbing | Residential plumbing | Free estimates, same-day | Austin metro & suburbs |
| Daniel's Plumbing & AC | Plumbing + HVAC | Top-listed suburban rankings | Austin metro & suburbs |
| Radiant Plumbing & AC | Multi-trade | Decades-established process fleet | Austin metro & Hill Country |
| Stan's | Full-service multi-trade | 4.7/5, thousands of reviews | Greater Austin metro |
| Fox Service Company | Plumbing, HVAC & electrical | All-brands; satisfaction guarantee | Austin metro |
Tell us tank or tankless and when it died. Beaver matches Austin homeowners with a licensed, vetted installer — free, full price quoted before any work starts.
Conventional tank replacement: $1,500–$3,500 installed for the common 40–50 gallon swap, with fuel type, capacity, and code catch-up as the levers. Code catch-up is the honest wildcard: if your old install predates current requirements, expect line items for expansion tanks, drain pans, sediment traps, venting corrections, and seismic-style strapping — legitimate, required, and the reason two quotes for "the same job" differ. Tankless conversion: commonly $3,500–$6,500+, driven by gas-line upsizing and vent routing; the unit is often the cheapest line on the invoice. Heat-pump water heaters: the rising third option — higher upfront, dramatically cheaper to run, and often incentive-eligible; they want space, condensate drainage, and sometimes circuit work, which is where the multi-trade shops earn their slot. Permits: required in Austin and its neighbors, and a contractor who suggests skipping one is volunteering you for inspection trouble at resale.
Central Texas water is the silent line item on every heater invoice. Scale blankets tank elements and floors, shortening the brochure's 12–15 year lifespan to a local reality of 8–12; on tankless units it chokes heat exchangers into error codes and service calls. The countermeasures, in escalating order: annual flushes (cheap, routinely skipped, worth years), descale service for tankless (typically annual in our water), and a softener — the upgrade that pays for itself in appliance lifespans and is close to mandatory alongside any tankless conversion, since manufacturers effectively price it into their warranty terms. If your last heater died young, it probably didn't die of old age; it died of minerals, and the treatment conversation is how the next one avoids the same fate.
The competence checklist, visible from the kitchen: old unit drained and hauled without redecorating your garage in rust water; new unit set level on a code-compliant pan with the drain routed somewhere sane; expansion tank installed and properly pressurized (ask them to show you — good installers enjoy the question); gas connections leak-tested with more than a sniff, or electric connections torqued and labeled; venting verified for draft, not assumed; temperature set to a scald-aware 120°-ish and demonstrated; and the permit paperwork plus warranty registration in your hand at the end. A tank swap runs 2–4 hours; tankless conversions run most of a day. Crews that finish a conversion by lunch skipped something you'll meet again in year two.
Incentive footnote: heat-pump water heaters have carried meaningful federal incentives in recent cycles, and Austin's utility programs have periodically sweetened electric conversions. The installer who knows the current landscape cold — numbers, not vibes — is showing you the freshness of the rest of their expertise; ask every bidder and grade accordingly.
Water heaters are the most reactively purchased appliance in the house — and the most predictable. If yours is past year eight in Austin water, showing rust at the drain valve, or popping like popcorn (that's sediment boiling), you are in the replacement window now, on your schedule, with three comparable quotes and a calm decision about tank versus tankless versus heat-pump. The alternative is the same purchase at emergency pacing with a wet garage and zero leverage. Our Austin plumber shortlist covers the broader trade; for this specific purchase, the shortlist above plus one planned weekend beats every version of the 6am story. Or skip the calls entirely — one form to Beaver, and a licensed, vetted installer arrives with the full price already in writing.