Tankless Water Heater Cost in Markham — 2026 Price Guide in Markham

Real 2026 pricing for tankless water heater in Markham — no bait numbers, no 'starting from' games. Below you'll see what drives the price, what a fair quote looks like, and the red flags that mean you're being overcharged. Tankless water heaters give homeowners in Markham endless hot water, real energy savings, and a fraction of the mechanical-room footprint of an old tank. That efficiency comes at a price: these units need proper install sizing, annual descaling, and real service knowledge when something goes wrong. We install, service, and repair every major tankless brand — Rinnai, Navien, Noritz, Rheem — and quote the job before we swing a wrench.

Why tankless water heater cost in markham — 2026 price guide matters in Markham

Our tankless water heater cost in markham — 2026 price guide process

1. 1

   Sizing Assessment

   We measure your peak demand — showers, kitchen, laundry — and pick a unit that hits it in the coldest month of the year in Markham, not the average one.

2. 2

   Install Or Descale

   New installs include venting, gas line sizing, and condensate drainage done to code. Existing units get a full descale on the annual visit.

3. 3

   Combustion And Flow Check

   Every service call ends with a combustion reading and a flow test at multiple fixtures.

4. 4

   Repair When Needed

   Flame-sensing, ignition, flow-sensor, and control-board faults are the common failures, and we carry all of them on the truck.

5. 5

   Documentation

   Every install and service call comes with a written report and warranty paperwork.

Common findings in Markham

• Scale buildup on heat exchangers in hard-water areas
• Undersized gas lines starving the burner at peak demand
• Failed flow sensors causing intermittent cold sandwiches
• Corroded flame rods from long service intervals

What you get

FAQ