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Business Details
50+ Years
experience
Emergency
services
Your Trusted Plumbing & Heating Experts in Waterloo
Established in 1966 by Franz Kastl and Paul Zuch, our company has served the Waterloo Region for over five decades. Initially catering to German contractors, we expanded to become a leading plumbing and heating specialist by the 1970s. Today, we operate as a full-service provider for plumbing and hydronic heating in new construction and renovation projects. Our team of licensed plumbing and gas technicians prioritizes knowledge, professionalism, and customer service excellence. We supply high-quality fixtures from industry-leading manufacturers, offering installation and service at competitive prices.

Our expertise spans residential and commercial applications, including radiant infloor heating, water treatment systems, and gas services. We partner with trusted brands like Viessmann and Uponor to deliver durable, efficient solutions tailored to client needs. Our commitment to quality extends to snow-melt systems, backflow prevention, and emergency 24/7 support. With decades of local experience, we serve homeowners, builders, and renovation companies with equal dedication. Our accessible customer service plan reflects our commitment to serving all clients, including those with disabilities.
Services
Radiant Infloor Heating New Home Construction Water Softener Installations Gas Services Drain Cleaning
Details
  • Year established: 1966
Highlights and features
  • We offer 50+ years of local plumbing and heating expertise.
  • Our licensed technicians specialize in hydronic heating systems.
  • We supply and install quality fixtures from leading manufacturers.
  • 24/7 emergency services available for urgent plumbing needs.
  • We prioritize accessible, customer-focused service for all clients.
Services
Radiant Infloor Heating
Specializing in Uponor radiant infloor systems, we install durable PEX tubing networks that distribute even heat beneath floors. Ideal for new builds or renovations, this solution eliminates dust circulation while working with tile, wood, or carpet surfaces. Our systems also support snow-melt applications for driveways and sidewalks.
Water Treatment
We supply and install R-Can CS Series water softeners to address regional water hardness issues. These systems reduce mineral buildup in appliances while improving laundry quality and skin comfort. Our technicians also offer reverse osmosis and iron filtration solutions tailored to household needs.
Gas Services
Our licensed technicians handle residential and commercial gas installations, including lines for appliances and replacement water heaters. We ensure safe, code-compliant connections for barbecues, stoves, and dryers while providing expert troubleshooting for existing systems.
Questions
What areas do you serve?
We primarily serve the Waterloo Region and surrounding areas in Ontario.
Do you offer emergency services?
Yes, we provide 24/7 emergency plumbing support for urgent needs.
What heating systems do you specialize in?
We specialize in hydronic (water-based) heating systems, including radiant infloor solutions.
Can you help with water softener installation?
Yes, we install R-Can CS Series water softeners and related filtration systems.
Are your technicians licensed?
All our plumbing and gas technicians hold valid industry licenses.
Reviews (5)
Liam O.
Sep 01, 2021 Report
We've dealt with K&Z numerous times for small wear and tear plumbing issues - faucets, taps, adapters, etc. They never cease to go above and beyond to help out and have sourced me parts for discontinued product lines. Most recently Dale was able to provide me a very proprietary gasket for a pex swivel adapter. Which saved me $$ as I would have needed someone onsite to do a repair. Thank for all your help Dale much appreciated!
Jeff B.
Jul 13, 2021 Report
While doing a backyard reno, other plumbers told me it is not possible to put a pool house washroom in my yard due to my finished basement. This company came in, had a look and said no problem. They gave me detailed information on how we can achieve this. All the work they did was amazing. The city inspector even commented on how nice of a job they did. I had them here several times to do work as they were needed in stages during the reno. I'd like to give a special mention to Kevin! He is extremely talented. What an absolute pleasure to deal with. He went above and beyond my expectations and always
Terry Pazuk
Feb 28, 2021 Report
From calling them on the phone to them showing up on time to quickly replace my water heater the whole process was great, seamless! Highly recommended 10/10!!!
Julia Chernushevich
Jan 12, 2021 Report
If I could give them more stars, I would. Called them for a quote on a new water heater, and they inquired about my current one - suggested we try to fix it. Had someone over within 30 minutes, who identified the problem and taught me all about my water heater so that next time I could troubleshoot it a bit better myself. Will definitely use these guys again. Thank you!
Donna H.
Oct 15, 2020 Report
From start to finish this team was outstanding. We had hydronic in-floor radiant heating put in two rooms in our 1960's home when we realized the renovations we wanted to do would not accommodate the current floor radiators for those rooms. Rod was quick to show up and did a safe site visit during the pandemic, and followed up with an impressive quote. I had some questions about the quote which were answered within 24 hours via email. Tim and his crew showed up as scheduled to do the work, spent the entire day here, and cleaned up when they were done. They were very professional and courteous and