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Hot water

Gas Water Heater Replacement in Mississauga

Replacing a gas water heater is partly plumbing, partly gas fitting and partly venting. All three must be right for the unit to be safe.

  • Water seeping from the tank seams or base
  • Rust in the hot water and on the tank jacket
  • The unit is beyond about twelve years and repairs are mounting
  • Hot water no longer meets the household's demand
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Written note every visit.Cause, fix and parts, dated and left with you.
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  • Licensed plumbers.
  • Written job notes.
  • Phone answered day and night.
  • All of Mississauga.

Signs it is time

  • Water seeping from the tank seams or base
  • Rust in the hot water and on the tank jacket
  • The unit is beyond about twelve years and repairs are mounting
  • Hot water no longer meets the household's demand

Our guide on when to replace a water heater explains the decision in more detail.

How we do the work

  1. Size the new unit from the number of bathrooms and the peak demand of the household.
  2. Choose the venting. Atmospheric units share a chimney; power-vented units exhaust through the wall with plastic pipe.
  3. Shut off and drain the old tank, then disconnect gas, water and vent.
  4. Install the new unit with a new relief valve discharge, sediment trap and shut-offs.
  5. Test for gas leaks and draft before leaving.
  6. Remove the old tank for proper disposal.
The orphaned chimney. Once a high-efficiency furnace replaces the old one, the water heater may be left venting by itself up a chimney sized for two. That arrangement may need a liner or a power-vented heater.

Mississauga homes and this job

Most Mississauga homes heat water with natural gas supplied by Enbridge. Some households own their tanks; many rent them. Before replacing a rented unit, review the rental contract for buy-out and removal terms. Where demand is high or space is short, an electric or tankless unit may suit better.

What affects the cost

  • Tank capacity and recovery rate
  • Atmospheric versus power-vented models
  • Venting changes, gas line extensions and an expansion tank

Aerators clogged by sediment after a tank change are common; our note on cleaning an aerator helps restore flow. A burst pipe near the tank is a separate repair that we can handle on the same visit.

On site, in order

Water heater work

  1. 1Shut fuel and water, open a hot tap, drain the tank
  2. 2Disconnect, cap and carry the old unit out
  3. 3Set the new heater level on a drip pan
  4. 4Fill, purge air, fire it up and check every joint

On every job

  • Drop cloths down before any tool comes out
  • Water or fuel shut and tagged while we work
  • Every joint we made checked dry before we pack up
  • Old parts shown to you, then hauled away

A call-out, start to finish

  1. 1Call and describe the fixture, floor and symptom
  2. 2We arrive, lay drop cloths and shut the water where needed
  3. 3Trap pulled, line cabled or camera run to find the cause
  4. 4Fix explained, then cut, joined or replaced
  5. 5Water run through, joints checked, written note left

Answers our Mississauga crew gives most

How much of the day does a swap take?

A straight swap fills a morning or afternoon; venting changes add time.

Do I need a permit?

Gas appliance installation is regulated work reserved for licensed gas technicians, with permits where they apply.

Can a rented tank become my own?

Yes, subject to your rental contract terms. Check buy-out and removal conditions first.

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