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Tank & Tankless • All Brands • Same-Day Available

Water Heater Installation
in Wausau, Wisconsin

New water heater installation done right — code-compliant, properly vented, and sized for your household. Genrich Plumbing installs tank and tankless water heaters throughout Wausau and Marathon County.

Installation Services

Professional Water Heater Installation

Every installation includes proper venting, pressure relief valve setup, permit-ready documentation, and thorough testing.

Tank Water Heaters

40 to 80-gallon gas and electric tank water heaters installed to Wisconsin code. Brands: Rheem, American Standard, A.O. Smith, Bradford White.

  • Gas or electric
  • 40–80 gallon capacity
  • Proper venting & T&P valve
  • Old unit removal included
Tankless Water Heaters

On-demand endless hot water with 20–30% energy savings. Proper gas line sizing and venting for Wisconsin's cold climate.

  • Endless hot water
  • Gas line sizing verified
  • Proper venting installed
  • 15–20 year lifespan
Same-Day Replacement

Water heater failed? We stock common units and can typically complete replacement the same business day you call.

  • Same-day service available
  • Old unit disposal included
  • Permit-ready installation
  • Final inspection testing
61
Years Experience
5.0 ★
Google Rating
Free
Estimates Always
Master
Plumber
What Customers Say

5.0 Stars on Google

Trusted by Wausau families for over 61 years — backed by 40+ five-star reviews.

G
Gina T.
★★★★★

"Bob arrived that afternoon and got it all taken care of. Very friendly and helpful — same-day dishwasher installation that Home Depot couldn't handle. Would definitely hire again."

M
Mark R.
★★★★★

"Called Bob in the morning and he called right back. New water heater installed by noon. Very impressed with speed and professionalism. Fair pricing with no surprises on the bill."

S
Susan K.
★★★★★

"Have used Genrich Plumbing for many years. Bob and Ron are always professional, do quality work, and clean up after themselves. Both water heater and bathroom fixture work were perfect."

See All Reviews on Google
Common Questions

Frequently Asked Questions

General guideline: 40-gallon for 1–2 people, 50-gallon for 3–4 people, 80-gallon for 5+ people. Genrich Plumbing will assess your household usage and recommend the right capacity during the free estimate visit.

Most tank water heater replacements take 2–4 hours including removal of the old unit. Tankless installations may take 4–6 hours due to gas line and venting requirements.

Yes — Genrich Plumbing handles all permit requirements for water heater installation in Marathon County. Code-compliant installation protects your home insurance coverage and ensures safe operation.

Genrich installs Rheem, American Standard, A.O. Smith, and Bradford White — all excellent brands with strong warranties and service network. Bob will recommend the right brand and model for your budget and needs.

Need Water Heater Installation in Wausau?

Free estimates. Same-day callbacks. Licensed Master Plumber.

Get In Touch

Request a Free Estimate

Bob answers personally. Expect a same-day callback Mon–Fri 7 AM–7 PM.

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Contact Information
Address
5415 Roger Dr
Wausau, WI 54401
Business Hours
Mon–Fri: 7:00 AM – 7:00 PM
Closed weekends
★ 5.0 Google 61 Years Experience Master Plumber
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