Water Heater Services
For homes and businesses
Overview
A tankless water heater heats water only when you need it, so there is no large tank to keep hot and no waiting for it to refill. It saves space and can be a more efficient way to heat water.
DU 40 Heating and Cooling installs tankless water heaters, converts homes from tank systems and keeps existing units running smoothly with repairs and maintenance.
What we do
Correctly sized units installed for reliable hot water on demand.
Switch from a bulky tank to a compact wall-mounted unit.
Diagnosis of temperature swings, error codes and ignition problems.
Removes mineral buildup to protect performance and efficiency.
Inspection, cleaning and checks that extend the life of your unit.
We match the unit to your household or business hot water demand.
Warning signs
Water runs lukewarm or takes too long to heat.
Hot water suddenly turns cold mid-shower.
The display shows warnings or the unit shuts down.
Flow from hot taps is weaker than it should be.
Clicking, rumbling or humming during use.
Your tank heater runs out of hot water too quickly.
How it works
Why DU 40
Prompt help when your hot water stops.
Clear quotes with no surprises on the invoice.
Trained professionals for installs and repairs.
Clean installs and a tidy finish.
Customer stories
Robert Hughes
Emily Foster
Olivia Grant
FAQ
When you open a hot tap, water flows through the unit and is heated instantly, so there is no tank of stored hot water to keep warm.
A correctly sized tankless unit provides a continuous supply. Very high demand from several taps at once can exceed a unit’s capacity, which is why sizing matters.
We recommend a service and descale once a year, or more often in areas with hard water.
Yes. We assess your gas or electric supply, venting and space, then handle the full conversion.
Tankless heaters are compact and usually wall-mounted, freeing up the floor space a tank would take.
Yes. We install and service tankless water heaters for homes, rental properties and commercial spaces.
Other services
DU 40 Heating & Cooling provides dependable furnace, AC and heat pump services for homes and businesses. From fast repairs to new installations, we keep your space comfortable in every season.
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