Tankless Water Heater Repair & Replacement in Ottawa
No hot water? Error code flashing? Water turning cold halfway through your shower?
Climate Keepers provides tankless water heater repair, replacement, installation, and maintenance throughout Ottawa and the surrounding area. Our licensed and insured technicians inspect your system, identify the fault, explain whether repair or replacement makes more sense. We test the flow, temperature, and controls before restoring your hot water.


Tankless Water Heater Experts in Ottawa
Routine tankless water heater servicing helps prevent scale buildup, restricted flow, blocked filters, worn parts, and control faults from interrupting your hot water. At Climate Keepers, we clean, test, and repair the affected components, and explain when a new unit would cost less than ongoing repairs.
With 15 years of experience, 24/7 emergency availability, and licensed, insured, ESA-registered technicians, you can trust us to keep your home supplied with reliable hot water.
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Emergency Tankless Water Heater Service in Ottawa
Don’t let losing hot water disrupt showers, laundry, dishes, and your entire daily routine. Climate Keepers provides 24/7 emergency water heater repair in Ottawa when your tankless system unexpectedly stops working. Call us directly for the fastest assistance, especially if your unit is leaking, overheating, repeatedly shutting down, showing a persistent fault, or producing no hot water.
Common Tankless Water Heater Problems We Fix
Tankless water heaters rely on several components working together. Request tankless water heater service in Ottawa from Climate Keepers if you notice any of the following:


Repair or Replace? We’ll Help You Decide
A breakdown doesn’t necessarily mean you need a new unit. Many tankless water heater problems can be resolved with proper maintenance or by replacing a serviceable component.
Tankless water heater repair in Ottawa may make sense when:
- The problem involves a sensor, filter, igniter, valve, or control.
- Your unit is relatively new.
- Replacement parts are available.
- Your heat exchanger is in good condition.
- Your system has been well maintained.
- The repair cost is reasonable.
You may get more value from tankless water heater replacement in Ottawa when:
- Your heat exchanger is damaged.
- Your unit needs frequent repairs.
- Parts are expensive or unavailable.
- Your unit cannot meet your hot water demand.
- Your household’s hot water demand has increased.
After inspecting your tankless water heater, our team will explain your options clearly and help you choose the repair or replacement that makes the most sense for your home.
Tankless Water Heater Replacement & Upgrade Options
A new tankless system can free up floor space and reduce standby energy use. Climate Keepers can replace an older unit or help you upgrade from a conventional hot water tank.
We size your new tankless system to supply enough hot water for all the fixtures you might use at the same time – for example, your washing machine, dishwasher, kitchen sink, and shower.
We consider the following as part of our tankless water heater installations in Ottawa:
- Fixtures used at the same time and the required flow rate
- Incoming water temperature
- Gas or electrical capacity
- Venting, air intake, and installation location
- Current and future hot water demand
We remove your old unit, connect the water lines, gas or electrical supply, venting, and condensate drain, then test the flow, temperature, and controls to ensure safe operation. We also provide conventional water heater replacement in Ottawa when a storage tank is the more practical choice for your home.

Our Tankless Water Heater Service Process
- 01. Prompt Scheduling & Arrival
We arrange your service visit, gather details about the symptoms or error code, and arrive prepared to inspect your tankless system. - 02. Complete System Inspection
Our technicians check your unit’s heat exchanger, inlet filter, water flow, ignition or heating components, controls, venting, connections, and gas or electrical supply. - 03. Diagnosis, Options & Pricing
We identify the source of the problem and explain whether tankless heater service, repair, or replacement is the most cost-effective option. - 04. Maintenance, Repair or Installation
With your approval, we complete the approved maintenance, repair, or replacement, from flushing the heat exchanger and replacing failed parts to installing a new tankless water heater. - 05. Hot Water & Safety Testing
We test the flow, temperature, controls, ignition, venting, and connections, check for leaks, and clean the work area before leaving.
Areas We Serve
Climate Keepers provides tankless water heater repair, replacement, installation, and maintenance near you. We serve Ottawa and surrounding communities, including Kanata, Nepean, Barrhaven, Carp, Almonte, Arnprior, Renfrew, and other nearby towns.
- Arnprior
- Renfrew
- Almonte
- Carleton Place
- Carp
- Stittsville
- Kanata
- Bells Corners
- Nepean
- Barrhaven
- Ottawa
Bee Ready for Reliable Hot Water
No hot water, recurring error codes, or inconsistent temperatures – and unsure what to do next? Time for Plan Bee. Call Climate Keepers at 613-974-2899 or book online. Our technician will inspect your unit, explain the next step, and when you’re ready, repair or replace your unit, or install a new tankless water heater

BEE Informed
FAQ
Ready for Comfier Living? Let’s Talk
Tell us what’s going on with your home comfort, and we’ll get back to you as soon as we can – no pressure, no hard sell.
We’ll get back to you as soon as possible – if it’s an emergency, please call us directly for the fastest response