British Columbia Cost Guides · Langley
How Much Does Tankless Water Heater Installation Cost in Langley, BC?
Typical cost in Langley
$5,300
$3,550 low · $7,150 high
All-in installed price: unit, gas & venting, labour & permit · Updated July 2026
Installing a tankless water heater in Langley costs $3,550 to $7,150 installed, and most homeowners pay around $5,300 for a gas condensing unit. The numbers below are all-in installed costs — unit, gas hookup, venting, labour, and permit. A like-for-like tankless swap sits lowest; converting off a tank adds new gas-line and venting work plus old-tank removal, which pushes those jobs to the top of the range.
In Langley's detached homes and townhouses a tankless is usually a clean job — garage or utility-room install, short vent, gas often already sized. The rural properties are the different animal: many run on private wells with hard, iron-heavy water that scales a heat exchanger fast, so a softener or descaling plan belongs in the conversation before you buy.
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By the PlumbingCosts.ca team — we track published contractor rates, supplier pricing, and permit fees across Canada because you deserve to know a fair price before anyone's in your basement.
Price by Job Type in Langley
| Job | Low | Average | High |
|---|---|---|---|
| Mid-range gas condensing | $3,900 | $5,100 | $6,650 |
| Premium gas condensing (Navien, Rinnai) | $4,400 | $5,900 | $7,650 |
| Converting from a tank (adds gas-line + venting) | $4,600 | $6,100 | $8,150 |
| Electric point-of-use (single fixture) | $350 | $700 | $1,450 |
What's in the Price — and What Isn't
In the price
- The unit itself — a gas condensing model from a name like Navien, Rinnai, or Bosch
- Wall mounting and the bracket
- Gas connection to the existing line
- Venting to the exterior — stainless for non-condensing, PVC or polypropylene for condensing
- A condensate drain on condensing units, plus isolation (service) valves for descaling
- The gas permit and final inspection
- Commissioning: firing the unit, setting flow and temperature, and combustion and CO testing
Costs extra
- Upsizing the gas line or meter if the existing one can't feed the burner (+$500–1,800)
- Electrical work if a new circuit or outlet is needed for ignition and controls (+$200–600)
- Removing and hauling the old tank on a conversion (+$150–300)
- A water softener, which hard-water homes need to protect the heat exchanger (+$1,500–3,000)
- Drywall or finishing if venting or gas runs open up a wall
The number that actually matters in a tankless quote is the heat-exchanger warranty. A 15-year exchanger on a premium unit is worth more than a $200 discount on a 10-year one.
Calculate Your Estimate
What Moves the Price
- Gas line and meter capacity
- A whole-home unit burns 150,000–199,000 BTU, roughly four times a tank. A ½″ line often has to be upsized to ¾″ and the meter checked — $500–1,800 when it comes up short.
- Venting type
- Condensing units vent through PVC or polypropylene; non-condensing units need stainless. A fresh vent run to an exterior wall adds $400–1,200.
- Electrical for ignition and controls
- Even a gas unit needs power for the igniter, fan, and display. A new circuit or nearby outlet runs $200–600.
- Water hardness
- Hard water scales the heat exchanger quickly. Plan on yearly descaling, and budget $1,500–3,000 if you add a softener to protect the warranty.
- Unit tier
- A builder-grade condensing unit and a premium Navien or Rinnai can differ $800–2,000 before labour — usually in the length of the heat-exchanger warranty.
- Conversion vs tankless swap
- Replacing an existing tankless is mostly labour. Converting from a tank adds gas-line, venting, and removal work — often $1,500–3,000 more.
Where a typical $5,300 job goes:
- Materials
- 55% · ~$2,915
- Labour
- 42% · ~$2,226
- Permit & disposal
- 3% · ~$159
How the Job Actually Goes
-
Sizing and gas-line assessment
The installer works out your peak flow demand in litres per minute, picks a unit to match, and confirms the gas line and meter can actually feed it. Undersize the gas and the unit throttles; undersize the flow and showers go cold mid-rinse.
Included in the quote
-
Remove the old unit (conversions)
On a switch from a tank, the old unit is drained, disconnected, and hauled away, and the wall is prepped for a mounted heater. A tankless-to-tankless swap skips this step entirely.
Old-tank removal $150–300 when converting
-
Mount and connect
The unit is hung on the wall and tied into gas, water, venting, and — on condensing models — a condensate drain. Isolation valves go on the water lines so future descaling is a quick hookup.
$1,200–2,500 of the labour and materials
-
Commission and test
The gasfitter fires the unit, sets the output temperature and flow, then verifies combustion, checks for CO, and leak-tests every gas joint. This is the step a DIY install can't safely finish.
Included
-
Permit inspection
The gas permit is closed out — through Technical Safety BC in most of the province, or the municipal program in cities that run their own.
Gas permit about $31–$164 by city, more where a municipal plumbing permit also applies
Do It Yourself or Hire a Pro?
Doing it yourself
- A small electric point-of-use unit under a single sink is genuinely DIY — 120V or 240V, no gas, no venting
- You choose the unit and fit it on your own schedule
- A whole-home gas tankless is off-limits: BC law puts gas work in the hands of a licensed gasfitter
- Venting, gas-line sizing, and condensate all have to be right — get one wrong and you either starve the burner or spill combustion gases indoors
- An unpermitted install can void both the manufacturer warranty and your home insurance
- Combustion and CO checks at start-up need instruments most homeowners don't own
Hiring a licensed pro
- Gas sizing, venting, and condensate done to code, with combustion and CO verified at commissioning
- Permit pulled and inspection passed — the paperwork that keeps insurance valid
- The manufacturer warranty stays intact, and you get workmanship coverage on top
- The installer sizes the unit to your real flow demand so you neither over- nor under-buy
- Materials carry the bill — the unit alone can be $1,500–3,000 before labour
- A conversion can run one to two days, not an afternoon
Our take: For a gas tankless there's no DIY path — a licensed gasfitter is the law in BC, and the venting and combustion work is more involved than a straight tank swap. The one exception is a small electric point-of-use heater feeding a single fixture.
Signs It's Time to Replace
- You keep running out of hot water — a big household, back-to-back showers, or a soaker tub outruns a 40-gallon tank
- Your current tank is near the end and you'd rather not be back shopping for another one within a decade
- You want the floor space back — a tankless unit hangs on the wall and frees up the footprint a tank ate
- Your gas bills are high and you're staying in the house long enough for the efficiency to pay back — condensing units run above 90%
- Honest catch: the upfront cost is 2–3× a tank, and hard water means regular descaling to hold the warranty — weigh both before switching
How to Keep the Cost Down
- Don't count on a rebate for a gas tankless — BC's water-heater rebates are for electric heat-pump models, not gas. If you're open to one, as of July 2026 CleanBC Better Homes and BC Hydro each offer up to $1,000 (up to $3,500 income-qualified through CleanBC)
- Right-size the unit to your peak flow — an oversized tankless costs more up front and gains you nothing
- Descale on schedule, yearly in most of BC and more often on hard Interior water — it protects the heat-exchanger warranty and the unit's 20-year life
- Bundle any gas-line upsizing with other gas work — running a fireplace or range line in the same visit spreads the call-out
- Compare the heat-exchanger warranty, not just the sticker price — a longer exchanger warranty is worth more than a small discount
Langley Notes: Permits, Homes, Rates
Gas permits route through Technical Safety BC, where a contractor's permit for a water-heater swap runs $116 (2026); plumbing permits go through the Township or City of Langley depending on your address.
On acreage the well water is the deciding factor for a tankless — without softening, the heat exchanger scales quickly and the manufacturer can push back on a warranty claim, so budget the descaling valves or a softener up front.
Slightly above BC average, below core Metro Vancouver.
Questions to Ask Before You Hire
- Are you a licensed gasfitter registered with Technical Safety BC, and does your quote include pulling the gas permit?
- Is gas-line upsizing part of this price, or a change order if my line turns out too small?
- What venting are you running — stainless for a non-condensing unit, or PVC/polypropylene for condensing?
- How long is the heat-exchanger warranty on this unit, and what voids it?
- Do you offer annual descaling, and are service valves installed so a flush is quick?
While the Plumber Is There
Call-out time is a big share of any bill — if one of these applies to your home, pricing it in the same visit usually beats a separate appointment.
Still weighing a tank? A standard replacement is a third of the price up front — worth pricing side by side before you commit to going tankless.
Hard water is what kills tankless heat exchangers. On Interior or valley water, a softener is the difference between a 20-year unit and a warranty fight — cheapest to plumb in during the install.
The hidden cost in most tankless jobs: a high-BTU unit often needs the gas line upsized. Getting the line assessed up front keeps it from becoming a surprise change order.
Common Questions
Tankless Water Heater Installation Costs Across British Columbia
| City | Typical range | Average |
|---|---|---|
| Abbotsford | $3,450–$6,850 | $5,100 |
| Burnaby | $3,800–$7,550 | $5,600 |
| Chilliwack | $3,350–$6,700 | $5,000 |
| Coquitlam | $3,700–$7,350 | $5,450 |
| Delta | $3,650–$7,300 | $5,400 |
| Kamloops | $3,350–$6,650 | $4,950 |
| Kelowna | $3,500–$7,000 | $5,200 |
| Langley (this page) | $3,550–$7,150 | $5,300 |
| Maple Ridge | $3,550–$7,150 | $5,300 |
| Nanaimo | $3,400–$6,800 | $5,050 |
| New Westminster | $3,700–$7,400 | $5,500 |
| North Vancouver | $3,900–$7,750 | $5,750 |
| Port Coquitlam | $3,650–$7,300 | $5,400 |
| Port Moody | $3,700–$7,350 | $5,450 |
| Prince George | $3,300–$6,600 | $4,900 |
| Richmond | $3,800–$7,550 | $5,600 |
| Saanich | $3,700–$7,350 | $5,450 |
| Surrey | $3,700–$7,350 | $5,450 |
| Vancouver | $3,900–$7,850 | $5,800 |
| Victoria | $3,700–$7,400 | $5,500 |
| West Vancouver | $4,000–$8,000 | $5,950 |