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Kastl & Zuch

Hydronic Heating

Boilers & Hydronic Heating

We are one of the K-W region's leading specialists in hydronic heating. Whether you need maintenance on an existing boiler or a full system replacement, our technicians are trained to diagnose and replace any residential or light commercial boiler.

Why we specify Viessmann

When we quote a new boiler, we recommend the Viessmann Group. Viessmann is one of the world's leading manufacturers of heating and renewable energy systems, and the build quality on the Vitodens and 100/200-W series matches the lifespan our customers expect from a 60-year company.

Service we cover

Annual maintenance, combustion analysis, expansion tank replacement, circulator and zone valve service, controls upgrades, indirect tank pairings, and full system design for new construction and renovations. We also retrofit forced-air homes to hydronic where the slab and envelope make sense.

When to replace

If your boiler is over 20 years old, costing more in service than it saves in fuel, or short-cycling on warm shoulder days, it is usually past its useful life. We will quote a replacement against your real fuel bills, not against a manufacturer's brochure.

FAQ

Common questions

  • Do you service boilers we did not install?

    Yes. We service every major residential boiler brand sold in southern Ontario, regardless of who installed it.

  • How long does a boiler replacement take?

    A like-for-like replacement is usually one to two days. A conversion from atmospheric to high-efficiency condensing typically runs two to three days because of venting and condensate work.

  • Do you offer financing?

    We work with the standard manufacturer rebate and lender programs available through Viessmann and the Enbridge Home Efficiency Rebate. Call for current options.

Talk to a technician

Need a quote, a service call, or a second opinion?

We answer the phone. We pull permits. We stand behind our work, same as we have since 1966.