Sanitär · Heizung · Lüftung · Umwelttechnik

Water, heat and air, engineered to work quietly for decades.

ASU Webranitz plans, installs and maintains the systems that keep buildings across Munich running — from a dripping tap to a full heating retrofit. Master-certified technicians, straight answers, work that lasts.

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20+
years in the trade
3,400+
installations completed
24/7
emergency response
Meisterbetrieb — certified master craftsmen Fully licensed & insured Serving Munich & surrounding districts Written, fixed-price quotes

A Munich trade business, run the way trade businesses should be run.

ASU Abwasser-Sanitär-Umwelttechnik Webranitz GmbH was built on a simple idea: the people who plan your plumbing should be the same people who show up to install it. No subcontractor handoffs, no vague estimates — just a local team of master-certified technicians who explain what's wrong, what it costs, and why.

We work on everything from a single leaking valve to complete heating and ventilation retrofits for apartment buildings, and we size every job the same way: correctly the first time.

  • Family-owned, based on Limesstraße in Munich
  • Every technician trained to German Meister standard
  • Materials sourced for a 20+ year service life

What we install, fix and maintain

Six core disciplines, one team. Every service below is handled in-house, start to finish.

Sanitary Installation

Bathroom and kitchen fit-outs, pipework, fixtures and fittings — planned and installed to code, with clean, precise finishing.

Heating Systems

Boiler installation, heat pump retrofits, underfloor heating and annual servicing — tuned for lower bills, not just compliance.

Ventilation & Air

Mechanical ventilation, heat recovery and air conditioning for homes and commercial spaces, sized for the room, not the brochure.

Drainage & Wastewater

Drain clearing, sewer camera inspection, pipe relining and wastewater system repair — including out-of-hours callouts.

24/7 Emergency Service

Burst pipe at 2am? We answer the phone ourselves and dispatch a technician — no call centre, no waiting until Monday.

Environmental Technology

Water treatment, rainwater harvesting and energy-efficient system upgrades for owners who plan a decade ahead.

Why building owners in Munich choose ASU

Fixed, written quotes

You get a price before we start, not an invoice full of surprises after.

One team, no subcontractors

The technician who scopes the job is the one who does the work.

Real emergency coverage

A live technician answers our emergency line, every day of the year.

Standards, not shortcuts

Every installation meets current DIN and VDI codes — documented.

Energy-conscious design

We size systems to actually lower running costs, not just pass inspection.

Local & accountable

Based in Munich, with a landline you can call back — not a booking app.

Tell us what's going on.

Send a few details about the job and we'll get back to you with next steps, usually within one business day. For active leaks or no heat, call the emergency line directly.