Ending a water heater rental in Ottawa: buy out or return?

Many Ottawa houses, from the bungalows of Nepean to the newest streets in Stittsville, still pay a monthly rental on the water heater. Often it came with the house, the contract transferred with the deed, and the tank has been paid for several times over. At $30 to $55 a month, a rental costs $4,300 to $7,900 across the twelve or so years a tank lasts. An owned tank is installed for a fraction of that; an owned tankless unit for roughly the same as the rental total, and then it is yours. Getting out is a matter of reading the contract and planning the switch so the house is never without hot water.

Find out what you actually signed

Dig out the agreement, or phone the rental company and ask for the terms on the account. If you bought the house with the tank in it, you may never have signed anything, but the contract transferred and its exit clauses transferred with it. You are after four things:

• The buy-out price. Almost every rental contract has a schedule where the price to buy the tank falls each year with its age.
• The notice period for returning the tank.
• Any removal, disconnection or early-termination fee.
• The age and model of the tank. Ask while you are on the phone; it decides the next step.

Get the answers in writing before you do anything else.

Buy it, return it, or ride it out

• Tank under about six years old and the buy-out is a few hundred dollars: buy it. You keep a tank with life left and the payments stop that month.
• Tank between six and ten: usually return it rather than buy. Paying to own a tank that has four years left and then paying to replace it is the worst of both.
• Tank past ten: return it, and have the replacement installed the same day. A rental tank at that age is on borrowed time whether you own it or not.
• A tankless unit or a combination boiler in mind: return the tank and do the installation in one visit, so there is no gap in hot water.

What replacing it costs

Typical Ottawa-area installed prices in 2026: a 40 or 50 gallon power-vented gas tank $2,000 to $3,200; a tankless on-demand unit $4,200 to $6,000, with the gas line and venting it needs. Both carry a manufacturer warranty, typically six to twelve years on the tank or heat exchanger, and the installer labour warranty in writing. Against a $45 monthly rental, the owned tank pays for itself in about four years and the tankless in seven to nine, before counting the gas the tankless saves. These are typical ranges; the written quote is final.

Ottawa details that change the job

• Venting. A power-vented tank or a tankless unit vents in plastic pipe through the wall, like a high-efficiency furnace, and its termination needs to sit above the drift line and away from the furnace intake. A tank that vented up a chimney shared with an old furnace is a different conversation if that furnace has since been replaced; the chimney may be oversized for the tank alone.
• Cold inlet water. Ottawa's mains water arrives close to freezing in February. A tankless unit sized for a Toronto winter can fall short of its rated flow here; it is sized to the inlet temperature, not the brochure.
• Propane. In Manotick, North Gower and the rural edges, the replacement is a propane unit with the right orifices and regulator.
• Older homes with a boiler. A century home in Centretown or the Glebe heated by radiators can replace the rental tank with an indirect tank off the boiler, or with a combination boiler that does heating and hot water in one; see boilers and radiant heating.

The hand-over day

• Give the rental company the notice the contract requires and ask exactly how they want the tank returned. Some collect it; some ask that it be left tagged in the garage or at the curb.
• Book the installation for a date past the notice period. The new unit is on site before the old one is disconnected.
• We shut off, drain and disconnect the rental, cap the lines, install the owned unit, run or adjust the gas line and venting, test it and leave the old tank where the company asked.
• Confirm the account is closed and the next bill is the last. Keep the disconnection date in writing.

Traps

• The "upgrade" offer. When you call to cancel, you may be offered a new tank on a new rental. It restarts a contract that will outlive this tank too.
• A buy-out figure that quietly includes a removal fee for a tank you are keeping.
• A tankless quote without the larger gas line most tankless units need. Ask what size line the unit requires and whether it is in the price.
• Doing it in January without a plan. Hot water in Ottawa in winter is not optional; sequence the day.

To get started, send us the age and model of the rental tank and the buy-out figure the company gave you, and we will tell you which route makes sense and what an owned water heater would cost installed. If the furnace is also near the end, the two jobs share a visit and the venting is planned together; see how many winters does a furnace have in it?.