The water heater is one of the smallest appliances in the basement and one of the most common questions after a home inspection. How old is it? Is it owned or rented? Will it need replacing soon? Is the venting safe? During a home inspection in Richmond Hill, Ajax or Oshawa, I look at the tank or tankless unit, its venting, its gas or electrical connection and its safety valve, and I tell you plainly what I see. This post covers the questions I’d ask about a water heater before you firm up an offer, and what the answers usually mean. Your inspector is Yama Nehan, a Certified and Registered Home Inspector with about 15 years of home inspection experience and a construction engineering degree from George Brown (Building Renovations). He is also a licensed contractor with about 20 years of construction experience and the owner of Nehan Construction, and that practical construction experience is one of the main reasons clients pick him. Yama Nehan is the only one trusted to do the inspections himself. Home inspections start from $499; the final price depends on the property. Call 647-704-7100 or book an inspection online.
Key takeaways
- Many water heaters in Ontario homes are rented, not owned. Find out which before closing, because a rental contract usually moves to the new owner.
- Age matters. The label or serial number usually shows when the unit was made, and an older tank is worth budgeting for.
- Venting is the safety question. A tank that used to share a chimney with an old furnace can be left venting poorly after the furnace is upgraded.
- The relief valve and its discharge pipe should be in place and pointed safely toward the floor.
- A home inspection is visual and non-invasive. I don’t drain or dismantle the unit, and I report what I can see and safely operate.
- Inspection-first: Golden Home Inspections reports on condition and does not use the inspection to sell repairs.
Tank vs tankless vs power-vented: what am I looking at?
| Conventional gas tank (chimney-vented) | Power-vented gas tank | Tankless (on-demand) | |
|---|---|---|---|
| How it vents | Into a chimney or metal flue, using natural draft | A fan pushes exhaust out through plastic pipe in a side wall | Usually through a side wall with its own vent pipe |
| Where I see it most | Older homes in Oshawa, Ajax and older parts of Richmond Hill | Homes where the furnace was upgraded to high efficiency, and many newer subdivisions | Renovated homes and some newer builds |
| What I check | Draft hood, flue connection, chimney condition where visible, signs of spillage | Vent pipe slope and joints, exterior termination clearances, fan operation | Venting, gas and water connections, signs of leaks, any visible scale |
| Common issue | Rust or scorching at the draft hood from poor draft | Vent termination blocked by snow or too close to a window or door | Not descaled, or no service history |
9 water heater questions to ask your home inspector
1. Is the water heater owned or rented?
This one isn’t something I can tell from looking at the tank, but it’s often the first thing buyers wish they’d asked. Rental tanks are very common in the GTA, and the rental agreement usually transfers to you when you buy. Ask through your agent for the rental company, the monthly cost and the buyout terms, and make sure the agreement of purchase and sale says how the water heater is being handled. A sticker on the tank often names the company, which I’ll note and photograph.
2. How old is it?
I read the label and, where the date isn’t printed, the serial number, which often encodes the year it was made. Many tank water heaters last somewhere around 10 to 15 years, depending on water quality, maintenance and how hard they work. If the tank is near or past that range, I’ll say so, so you can budget for a replacement or ask the seller about it.
3. Is there any rust, leaking or water on the floor?
I look at the bottom of the tank, the fittings at the top, the drain valve and the floor around it. Rust at the base or a damp floor can mean the tank itself is failing, which usually means replacement, not repair. Corroded fittings at the top are more often a connection issue. A drain pan under the tank is a good sign, especially in a finished basement.
4. Is the venting safe?
This is the question I care about most on a gas water heater. A situation we often see: the old furnace was replaced with a high-efficiency model that vents out the side wall, and the water heater was left alone, venting by itself into a chimney that was sized for both appliances. A tank in that position can draft poorly. I look for scorch marks or rust at the draft hood, the condition of the flue pipe and its connections, and the chimney where I can see it. Anything that suggests spillage gets a clear recommendation for a licensed gas technician to assess it.
5. Is the relief valve in place and piped properly?
Every tank should have a temperature and pressure relief valve, with a discharge pipe running down toward the floor so that hot water released under pressure doesn’t spray at someone. I check that the valve is there, that the pipe is connected and the right material, and that it isn’t capped, kinked or cut off short. I don’t trip the valve on older tanks, because a valve that hasn’t moved in years can stick open and start leaking.
6. How is it connected to gas or power?
On a gas unit, I look for a shutoff valve near the appliance, visible gas line condition and a sediment trap where one is expected. On an electric unit, I look at the visible wiring and the disconnect. Loose, unsupported or improvised connections get noted.
7. Where does the power-vent pipe come out outside?
For power-vented units, I walk outside to the vent termination. It should be clear of snow, plants and debris, and not right beside an opening window, a door or the gas meter. In winter in Richmond Hill, Ajax and Oshawa, a buried or iced-up vent is one of the most common reasons a power-vented tank shuts itself off.
8. For a tankless unit, has it been serviced?
Tankless heaters are efficient, but GTA water tends to leave scale inside them over time. I check the venting, the gas and water connections and any visible leaks. Ask the seller when it was last descaled or serviced, and whether there are records. A unit with no service history isn’t automatically a problem, but it’s worth knowing.
9. Does it look sized for the house?
I note the tank’s capacity on the label. A small tank in a large home, or a home with a basement apartment sharing one heater, can mean running out of hot water. That’s not a defect, but it’s useful information if you’re planning a family, a rental unit or a renovation.
Water heater checklist for buyers in Richmond Hill, Ajax and Oshawa
- Owned or rented? Get the rental company, monthly cost and buyout terms in writing.
- Age from the label or serial number
- Rust, leaks or water at the base, fittings and floor
- Venting: draft hood, flue, chimney or side-wall vent, and signs of spillage
- Relief valve present with a proper discharge pipe
- Gas shutoff or electrical disconnect and visible connections
- Outdoor vent termination clear and well placed
- Service records, especially for tankless units
- Capacity versus the size of the household and any second unit
Choose your home inspector carefully and ask about their certifications, their experience and what the report will include. You should get a clear written report with photos, and Golden Home Inspections sends reports within 24 hours. For more, see what a home inspection includes in Ontario, home inspection in Richmond Hill, home inspector in Ajax and home inspection in Oshawa. If the inspection turns up issues, read what to do if a home inspection finds problems.
FAQ
Does a home inspector check the water heater?
Yes. I look at the unit’s visible condition, age, venting, relief valve, gas or electrical connection and signs of leaks, and I run hot water at fixtures to confirm it’s working. I don’t drain or take apart the unit.
Can a home inspector tell if a water heater is rented?
Sometimes there’s a sticker naming a rental company, and I’ll note it. The only reliable answer comes from the seller and the rental company, so ask through your agent before closing.
Is an old water heater a reason not to buy a house?
Not on its own. It’s a predictable cost you can plan for or raise with the seller. Unsafe venting or an active leak is more urgent, and I’ll flag those clearly in the report.
How much does a home inspection cost in Richmond Hill, Ajax or Oshawa?
Home inspections start from $499, and the final price depends on the property, including its size, age and type. Condo inspections start from $399. Call 647-704-7100 for a quote.
How do I book?
Call 647-704-7100, email contact@goldenhomeinspections.ca, or book your home inspection online. Golden Home Inspections is based in Toronto, Ontario, and inspects homes across Richmond Hill, Ajax, Oshawa, Toronto, Mississauga, Brampton, Oakville, Vaughan, Markham, Pickering, Whitby and the rest of the west, east and north GTA. Hours are 9 AM to 8 PM, seven days a week.
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