
Rough-in
The carrier goes in before the wall does
An in-wall carrier has to be plumb, braced and set to the finished floor height while the bay is still open. Get it wrong and the fix is a demolition job.
Racine, Wisconsin. Family owned since 1978.
Family owned in Racine. Roughly 200 new homes a year, plus service, remodel, commercial and industrial process piping. Every job runs under a Wisconsin licensed journeyman.
1951 Grove Ave, Racine
The company began on new residential construction and grew into a plumbing contractor that covers residential, commercial and industrial work, service and repair, and design build projects. Kohler lists Karlsen in its own Find a Pro directory, which puts the fifty years on somebody else's record and not just ours.
We are members of the Racine, Kenosha Builders Association, and our plumbers belong to Plumbers & Steamfitters Local 118. Seniors and veterans get 5% off service work.

The whole shop
Sixteen people, one address, and the van that turns up at your house.
The covered-up work
A plumbing company is judged on the part nobody photographs. Here is some of it, before it disappeared.
Six divisions, one shop
Service trucks, remodel crews, new construction, multi-family, commercial and industrial. Same office, same licence, same phone number.

Service trucks
Water heaters, sump pumps, backflow testing, burst and frozen lines, and the drains a plunger will not move. OEM repair parts on the truck, jetters and cameras in the shop.
Service and repair details
Remodel plumbingFrom a fixture swap to a bathroom or kitchen that moves to a different wall. Home additions and light commercial included.Remodel plumbing
New home constructionAround 200 new homes a year for builders and general contractors, custom and package alike, roughed in to the builder's schedule.New home construction
Multi-familyTwo-family homes up to multiple unit condominiums and apartments, on plan and spec or design build.Multi-family
Commercial plumbingTenant improvements, additions and ground-up buildings for schools, health care, municipal buildings, food processing plants and stores.Commercial
Industrial plumbingNew plant lines, equipment upgrades and extra process line runs, fitted around a plant that has to keep running.IndustrialThree jobs, told by the people who paid for them
Water heater, two outside spigots, broken supply-line hangers
"Roughly 3 hours later everything was installed and updated. That was the best $2400 dollars I've spent on my house in a long time."
The gentleman who did the work made it exactly the way I would have done if I had his skill and abilities. Everything was seamless from the quote, scheduling the job, and the technician calling before he arrived. Karlsen Plumbing is the only place I'll call for future work.
Mike Gibbs on Google
Emergency call that did not need to be one
"The owner was very open and honest stating that he'd hate to see someone spend the money if not necessary."
They booked her in first thing Monday. Simon found the problem and repaired it quickly, and the bill came in under what she expected.
Ash Jarrett on Google
A tub faucet that leaked twice
"You responded same day I called & replaced defective new part successfully. No charge for the second call."
Scott had replaced the broken part inside the faucet. The replacement part itself failed a week later, so the second visit was ours to pay for, not hers.
Maddy on Google
Why the licence takes five years
Every journeyman plumber at Karlsen completed a five year apprenticeship: day school in the classroom, evening classes, and hours on the job beside other licensed plumbers. Each apprentice is required to attend 800 hours of class. After that, the training does not stop. We run monthly continuing education so the crews know the products and the equipment that are actually being specified now.
Before you call

Racine and Southeast Wisconsin
Karlsen Plumbing, 1951 Grove Ave, Racine. Call the shop and you get people who have been doing this here since 1978.