Two tank brands sit in almost every oil-heated basement from Moncton to Sackville, and roughly $1,500 separates them. If an insurance letter just landed on your kitchen table saying the old tank has to go, the Granby vs Roth oil tank question is probably the next thing keeping you up at night.
Here’s the good news. There’s no wrong answer between these two. Both are well-built tanks that will keep your family warm through a February nor’easter. But there’s usually a right answer for your particular house, your budget, and your insurance company. This is the same honest comparison we walk homeowners through at kitchen tables across Greater Moncton every week.
Why the Granby vs Roth Oil Tank Question Comes Up So Often
Most tank replacements in Southeast New Brunswick don’t start with a homeowner deciding it’s time. They start with an insurance renewal letter. Insurers have tightened up on oil tanks over the past decade, and many now refuse to renew a policy on a tank older than 15 to 25 years, depending on the company and the tank type.
So you call around for quotes, and every quote comes back with one of two names on it. Granby, the steel tank builder from Quebec that’s been the standard in Atlantic Canada for generations. Or Roth, the German-designed double-wall tank that’s been winning over insurance companies year after year.
They solve the same problem in two very different ways. Granby builds a better version of the traditional welded steel tank. Roth threw out the traditional design entirely and built a plastic tank inside a steel bathtub. Which approach is right for you depends on your basement, your coastline, your insurer, and your wallet.
Not sure which one fits your situation? Call us at (506) 806-0900 and we’ll talk it through. The advice is free, and so is the written estimate.
Granby Tanks: Proven Steel at a Working Price
Granby has been building oil tanks in Saint-Paul-d’Abbotsford, Quebec since the 1950s, and there’s a decent chance the old tank in your basement right now is one of theirs. The standard residential model holds 910 litres, which is the familiar oval tank most of us grew up with.
A modern Granby is not the same tank your parents had, though. Today’s models use heavier gauge steel, better welds, and improved coatings. Granby also makes double-bottom tanks, sold under their 2-in-1 line, which add a second layer of steel under the belly of the tank where corrosion usually strikes first.
That last point matters, because steel tanks almost never rust from the outside in. They rust from the inside out. Condensation forms inside the tank, water sinks below the oil because it’s heavier, and that layer of water quietly eats the floor of the tank for years before anything shows. That’s why a steel tank can look mint on the outside and still fail. We cover the full timeline in our guide to how long oil tanks last.
Here’s what Granby gets you:
- Lower cost. A standard Granby runs $3,000 to $4,500 installed in the Moncton area, including removal of the old tank in most cases.
- Proven design. Techs know these tanks inside and out. Parts, gauges, and fittings are everywhere.
- Decent lifespan. A properly installed Granby in a dry basement typically gives you 15 to 25 years.
- Insurance acceptance. Nearly every insurer will happily cover a brand new Granby, especially a double-bottom model.
The trade-off is simple. It’s still steel, and steel plus water equals rust. The clock starts ticking the day it’s installed. Warranties on standard models are typically around 10 years, longer on double-bottom versions, so ask for the current warranty sheet before you sign anything.
Roth Tanks: Double-Wall Protection Insurers Love
Roth took a completely different approach. The inner tank is seamless, blow-moulded polyethylene, which cannot rust. Period. That inner tank sits inside a leak-proof galvanized steel outer shell that’s designed to catch and hold at least 110 percent of the tank’s contents if the inner tank ever fails.
That outer containment is the whole story. With a single-wall steel tank, a failure means oil on your basement floor, in your sump, maybe into the ground under your foundation. With a Roth, a failure means oil sitting safely in the outer shell while you call for service. An optical leak indicator shows you at a glance whether anything has ever escaped the inner tank.
The other things homeowners like:
- Long warranty. Roth backs its residential tanks with a 30-year limited warranty, and the warranty has historically included clean-up insurance coverage. Confirm the current terms with your installer.
- Compact footprint. Roth tanks are taller and narrower than the classic oval, which frees up basement space. The common residential sizes are 620, 1000, and 1500 litres.
- No internal corrosion worries. Polyethylene doesn’t care about condensation.
- Insurance leverage. Some insurers offer easier approvals, and occasionally better terms, for double-wall tanks. If your insurer is being difficult, a Roth often ends the conversation.
The trade-off is the price. Expect $4,500 to $5,500 installed in Greater Moncton, depending on size and how much piping needs to change. If you want the deeper dive on how containment tanks work, we wrote one here: double-wall oil tanks explained.
Granby vs Roth Oil Tank Costs: The Numbers Side by Side
Here’s the honest side-by-side, with typical installed prices we see across Moncton, Dieppe, Riverview, and the surrounding towns. All prices in Canadian dollars.
| Granby (steel) | Roth (double-wall) | |
|---|---|---|
| Typical installed cost | $3,000 to $4,500 | $4,500 to $5,500 |
| Construction | Welded steel, single wall or double bottom | Polyethylene inner tank, galvanized steel outer shell |
| Expected lifespan | 15 to 25 years | 30+ years |
| Typical warranty | About 10 years standard, longer on 2-in-1 models | 30-year limited warranty |
| Rust risk | Internal corrosion over time | Inner tank cannot rust |
| Secondary containment | No (double bottom helps but is not full containment) | Yes, holds 110% of contents |
| Footprint | Wide oval, needs more floor space | Tall and compact |
| Best for | Dry basements, tighter budgets, shorter ownership plans | Outdoor installs, coastal homes, strict insurers, long-term owners |
A fair installed quote should include draining and removing the old tank, the new tank and fittings, new oil line and filter as needed, permits where required, and transferring any usable oil. If a quote looks suspiciously cheap, something on that list is missing. Our oil tank replacement cost guide breaks down every line item.
Want a real number for your house instead of a range? Request a free written estimate and we’ll put it on paper, no pressure.
Three Local Calls, Three Different Answers
The best way to show how this decision actually plays out is with a few recent examples from around our service area.
Marc in Riverview got the classic renewal letter. His Granby was 26 years old, original to the house, and his insurer gave him 60 days. Marc’s plan was to sell within five years, and the basement was bone dry. We installed a new Granby 2-in-1 double-bottom tank for $2,950 all in. His insurer renewed without another word, and he didn’t spend Roth money on a house he’s leaving.
Diane in Shediac had the opposite situation. Her tank sits outside, 400 metres from the water, and the old steel tank was showing surface rust after only 14 years. Salt air is brutal on outdoor steel tanks along the Strait. She went with a Roth 1000L at $4,400 installed. With the polyethylene inner tank and galvanized shell, she’s done thinking about it for decades.
Kevin and Tanya in Memramcook were buying a house with oil heat, and the seller had no paperwork on the tank’s age. Their insurer flat-out refused to bind the policy on an undocumented tank. We swapped it for a Roth at $4,250 as a condition of closing, the insurer approved same week, and the deal went through. If you’re in that spot, read our piece on oil tank age and insurance before your closing date sneaks up.
Three houses, three budgets, three correct answers. That’s the honest truth about this comparison.
Our Honest Take: How to Choose
After enough of these kitchen table conversations, the decision usually comes down to four questions.
How long are you staying? If you’re selling within five to eight years, a new Granby satisfies the insurer, satisfies the buyer’s home inspector, and keeps $1,500 in your pocket. If this is your forever home, the Roth’s 30-year warranty means you’ll likely never buy another tank.
Where does the tank live? Indoor, dry basement, off the concrete on a proper stand? Steel does fine. Outdoor tank, coastal air in Shediac or Cap-Pelé, or a damp cellar? The Roth’s construction earns its price out there.
What does your insurer say? Call them before you order anything. Some companies are happy with any new tank. Others quietly favour double-wall containment, and a few will even adjust terms for it. Ten minutes on the phone can settle the whole debate for you.
What does your budget say? A working furnace with a safe new Granby beats an empty spot where a Roth should go. Don’t let perfect be the enemy of warm.
One caution, and we mean it. Tank replacement is not a DIY job in New Brunswick. Oil tank installations must follow the CSA B139 installation code, and the province regulates petroleum storage under the Petroleum Product Storage and Handling Regulation. Improper installs can void your warranty, your insurance, or both, and a botched oil line connection can put hundreds of litres of oil into your basement. In the U.S., the EPA’s storage tank program exists precisely because leaked heating oil is so expensive to clean up, and the physics don’t change at the border. Hire a licensed installer, whoever you hire.
If you find a wet spot, an oil smell, or a gauge that’s dropping faster than your usage, stop reading comparisons and get help now. Our emergency oil tank service line answers 24/7 at (506) 806-0900.
Otherwise, when you’re ready for numbers, we’ll quote both tanks for your house so you can compare real prices instead of internet ranges. Get your free written estimate here or learn more about our full oil tank replacement service in Moncton.
Frequently Asked Questions
Is a Roth tank worth the extra $1,000 to $1,500 over a Granby?
It depends on where the tank sits and how long you’re staying. For outdoor tanks, coastal homes, damp basements, or owners planning to stay 10+ years, the Roth’s rust-proof inner tank and 30-year warranty usually justify the premium. For a dry basement in a house you’ll sell within a few years, a new Granby double-bottom tank is the smarter spend.
How long do Granby and Roth oil tanks last in New Brunswick?
A properly installed Granby steel tank typically lasts 15 to 25 years indoors, less for outdoor tanks near salt air. Roth tanks carry a 30-year limited warranty and the polyethylene inner tank can’t rust, so they routinely outlast their steel cousins. In both cases, installation quality and moisture matter more than the badge on the tank.
Will my insurance company accept a new single-wall Granby tank?
Most insurers in New Brunswick will cover a brand new Granby without fuss, especially the 2-in-1 double-bottom models. That said, a handful of companies now prefer or require double-wall containment, so call your broker before ordering. Keep your installation certificate and warranty paperwork, because you’ll need them at every renewal.
Can I install a Granby or Roth oil tank myself?
No, and not just because we say so. New Brunswick regulates oil tank installations under provincial petroleum storage rules and the CSA B139 code, and insurers routinely deny claims on tanks that weren’t installed by a licensed professional. A DIY install risks your warranty, your coverage, and your basement. Get a licensed installer and get the paperwork.