Keep your hot water running the way it should

Tankless Water Heater Repair in Delta, Surrey, Richmond and White Rock

Tankless water heaters are a great fit for many homes because they heat water only when you need it. When they are working well, you get steady hot water, save space, and avoid keeping a full tank hot all day. But like any hard-working system, they still need regular care.

If your tankless water heater is slow to heat, showing an error code, shutting off, making noise, or giving you inconsistent water temperatures, Acorn Service Group can help. Our trained technicians service and repair tankless water heaters in Tsawwassen, Ladner, North Delta, Richmond, White Rock, Surrey, and nearby communities.

Tankless Water Heater Repair

We take the time to find the problem before we recommend a repair. Common tankless water heater issues can include:

  • Mineral buildup inside the unit
  • Dirty or clogged filters
  • Ignition trouble
  • Venting concerns
  • Sensor faults
  • Low water flow
  • Parts that are starting to wear out

Once we find the issue, we will review your options, explain what we found, and provide an upfront estimate before the work begins.

Annual maintenance protects your investment

Tankless systems work hard, especially in busy homes. Annual maintenance helps keep water flowing, protects the heat exchanger, and can lower the chance of a no-hot-water call when you need it most.

Regular maintenance may also be needed to keep your manufacturer warranty valid. Many tankless water heater brands require proof of service if there is ever a warranty claim. If the unit has not been flushed or maintained as recommended, some repairs may not be covered. Keeping up with yearly service is a simple way to protect your system, your comfort, and your warranty.

During a tankless water heater maintenance visit, we may:

  • Flush the system to help remove scale buildup
  • Clean the inlet water filter
  • Check for active or stored error codes
  • Inspect venting and air intake
  • Check gas and water connections
  • Test the unit for safe operation
  • Look for early signs of wear

If we see anything that needs attention, we will talk it through with you in plain language.

Why homeowners choose Acorn Service Group

Acorn Service Group has been helping local homeowners with heating, cooling, plumbing, and hot water needs since 1999. Our team lives and works in the same communities we serve, including Tsawwassen, Ladner, North Delta, Richmond, White Rock, and Surrey.

When you call Acorn, you can expect clear advice, respectful service, and work done by trained technicians. We show up ready to help, take care inside your home, and clean up before we leave. Our goal is not just to fix the issue today. It is to help you feel confident about your home’s hot water system for the long term.

Whether you need a repair now or want to book regular maintenance, we are here to help you get reliable hot water again.

Time for a service? Book an appointment online or give us a call.

Tankless Water Heater FAQs

How often should I service my tankless water heater?
Most tankless water heaters should be serviced once a year. Larger homes or multi-residential buildings with hard water or heavy hot water use may need service more often.
Is maintenance required for my tankless water heater warranty?
Many manufacturers require regular maintenance to keep warranty coverage valid. We keep detailed records for our customers to help with warranty claims if parts need to be replaced.
Why does my tankless water heater have inconsistent water temperature?
This can happen because of scale buildup, a dirty filter, low water flow, a sensor issue, or a problem with the gas supply. A service visit can help find the cause.
Do tankless water heaters need to be flushed?
Yes. Flushing helps remove mineral buildup inside the unit. This helps protect the heat exchanger and keeps the system working properly.
How long does tankless water heater maintenance take?
Most tankless water heater maintenance visits can be completed in 1 to 2 hours. The time needed depends on the unit, the amount of buildup, and whether any issues are found during the service.
Save On Plumbing

Offers & Discounts

$50
OFF

First service call

New customers save $50 on their first plumbing service.
$180

Storm Sump Pump Service Special

Protect your home with professional storm sump pump service and maintenance from Acorn. 
$100
OFF

New Water Heater Install

Save on a qualifying hot water tank installation.
Offers cannot be combined with other discounts & one time use. Valid during regular business hours in our service area. Some restrictions apply. Ask our team for details.