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A successful installation depends on getting the details right before the unit goes on the wall. These are the situations we encounter and resolve on every project.

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Wrong Tankless Unit Size for the Home

An undersized unit cannot keep up with simultaneous fixture demand and produces cold or lukewarm water during peak use. An oversized unit runs inefficiently at typical household flow rates and costs more than necessary. We calculate the correct size based on peak flow demand and winter temperature rise requirements before any unit is purchased or installed.

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Existing Gas Line Can't Support the Tankless Unit

Tankless water heaters draw significantly more gas than conventional tank heaters during operation. A 1/2-inch gas line that served the old tank may be too small to deliver adequate pressure to a high-BTU tankless unit, causing the burner to short-fire or throttle back under load. We assess the line diameter and supply pressure before the installation date and include any required upgrades in the project scope.

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No Clear Venting Path Through the Structure

Some installation locations do not have a straightforward path to the exterior for combustion air and exhaust. Interior walls, finished ceilings, and limited exterior access points can complicate venting design significantly. We plan the venting layout during the pre-installation assessment so the correct penetration points and pipe routing are identified before any cutting begins.

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Old Connections Don't Match the New Tankless Unit

When replacing a conventional tank heater, the existing gas, water, and venting connections are rarely in the correct location for a wall-mounted tankless unit. Rerouting water lines, capping or relocating the gas stub, and installing new exterior penetrations for venting are all standard parts of a proper tank-to-tankless conversion. We handle all of this as part of the installation project.

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Tankless Installation Done Without a Permit

A tankless water heater installation requires a permit and gas inspection in most Edmonton jurisdictions. Skipping this step can affect homeowner insurance coverage and create complications during a home sale. We manage the permit application and schedule the inspection as a standard part of every installation so homeowners do not have to navigate that process separately.

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Condensate Drainage Not Addressed

High-efficiency condensing tankless units produce acidic condensate that must be drained properly to prevent damage to the structure and comply with plumbing codes. Many installations require a condensate neutralizer kit and a dedicated drain connection that may not exist near the installation location. We identify condensate drainage requirements during the pre-install assessment and build the solution into the project.

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Tankless Underperforming After a DIY or Rushed Install

Tankless units installed without proper sizing, gas line verification, or venting design often underperform from the first use. Common symptoms include cold water sandwich effect, temperature fluctuations, frequent error codes, and burner shutdowns. We can assess an existing installation, identify what was not completed to specification, and correct the deficiencies to bring the system up to proper performance.

Tankless System Not Commissioned After Installation

A tankless unit that is connected but not properly commissioned may have incorrect temperature settings, unverified combustion quality, or untested safety functions. Commissioning is the final step that confirms the system is operating as designed under real load. We complete a full commissioning sequence on every installation before leaving the property, including output temperature verification and safety function testing.

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New Tankless Heater Won't Start After Installation

A tankless heater that will not start after a new installation almost always has a commissioning issue, such as an air lock in the water line, a gas pressure that has not been confirmed, or a flow sensor not registering adequate flow to trigger ignition. These are setup problems, not equipment failures. We test the full startup sequence before leaving the property on every installation.

Reviews

What Our Customers Say

★★★★★

Never running out of hot water again

We finally converted from our old tank and the difference is night and day. Four people showering back to back used to be a real problem and now nobody notices. Gas Services Edmonton sized the unit perfectly for our household.

★★★★★

Handled the whole conversion in one day

I expected the gas line and venting work to take longer than it did. The crew showed up in the morning and we had hot water again by early evening, all permits and inspection scheduling included.

★★★★☆

Great install, electrical upgrade added cost

We went electric since we don't have gas service and needed a panel upgrade we hadn't budgeted for. The team explained it clearly upfront so there were no surprises, just more than we initially expected to spend.

★★★★★

Honest about sizing for our household

I originally wanted a smaller unit to save money but the technician from Gas Services Edmonton explained why it would not keep up with our two bathrooms running at once. Glad we went with their recommendation instead.

★★★★★

Recirculation pump was worth the upgrade

Our water heater is far from the main bathroom and the added recirculation pump means we get hot water almost instantly now instead of waiting twenty seconds every time. Small extra cost, huge daily difference.

★★★★★

Smooth process from quote to inspection

Gas Services Edmonton handled every permit and the TSSA inspection without us having to lift a finger. The unit has run flawlessly since and our energy bill has already noticeably dropped.

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