Residential · Hot water tanks and on-demand heaters
Tankless water heater installation across Oakville
An on-demand heater fires a big burner only while a tap is open, pushing water through a wall-mounted heat exchanger.
- Typical stay: one full day
- On the dolly: unit, venting, gas fittings, service valves
- Your part: clear wall space near an outside wall
- Upkeep: periodic descaling through service valves
- Licensed plumbers · ask for details on the call
- Cause found and explained before work starts
- Oakville & Halton coverage
What this job involves
An on-demand heater fires a big burner only while a tap is open, pushing water through a wall-mounted heat exchanger. It gives back the floor space a tank used and keeps going through the longest shower, but it is not a drop-in swap. It wants enough gas, the right vent route, and a frank count of how many fixtures your household runs at once.
How the job goes
- Tally simultaneous fixtures and estimate the flow they need.
- Check meter capacity and gas line size against the unit’s input.
- Plan the vent through an outside wall with proper clearances.
- Hang the unit, connect gas and water, and fit isolation valves.
- Fire it up, test flow at several taps, and explain descaling.
Warning signs on your pipes
- The basement is cramped and the tank hogs floor space.
- The last person showering always gets the cold end.
- A renovation is a chance to rethink hot water.
- The existing tank needs replacing anyway.
- You want service valves set for easy flushing.
From the job notes
Halton’s lake water is moderately hard, and on-demand units are sensitive to scale on the exchanger.
Halton’s lake water is moderately hard, and on-demand units are sensitive to scale on the exchanger. Isolation valves that make periodic flushing easy are part of every install we do.
Gas sizing trips up many tankless projects. An on-demand burner can gulp several times what a tank burner does, so the pipe from the meter sometimes has to grow, and that is better known before the wall gets drilled.
What comes off the truck
| Tool or part | What it does on the job |
|---|---|
| Expansion tank and gauge | Sized against your street pressure on a closed system |
| Descaling kit | Flushes vinegar or descaler through a tankless heat exchanger |
Questions we hear
Will it lower my bills?
It trims standby losses. Whether it pays back depends on your use and the install cost, which we lay out honestly.
Two showers at once?
Many units manage it if sized properly, which is why we count fixtures before picking a model.
Related plumbing
- Running and leaking toilet repairflappers, fill valves, base leaks
- Faucet repair and replacementdrips, cartridges, new taps
- Burst pipe repairsplit copper, failed fittings
- Water pressure problemsany time
- Plumbing permitsbefore a renovation
- Port Creditlakeside Mississauga village
- Bronte Villageharbour village in the southwest
- River Oaks1990s family subdivision
Not sure which job fits your pipe? Call (365) 517-8536 and describe it.