Keep on-demand hot water working its best
Tankless heaters don’t behave like tank models — they heat water on the fly as it passes through, so trouble tends to appear as temperature swings, flow trouble, error codes, or fading performance.
We handle repair, installation, maintenance, and descaling. If your tankless unit needs help, call (386) 353-9386.
Tankless problems we solve
Most tankless trouble announces itself through temperature, flow, or error codes.
No hot water
Ignition failure, power trouble, flow problems, scale inside the heat exchanger, a clogged inlet filter, or a failing sensor can all cut off hot water. We find out why it stopped heating before recommending repair or replacement.
Water goes hot and cold
Hot, then cold, then hot again usually traces to scale on the heat exchanger, unsteady flow, demand that outstrips the unit, or a worn internal component.
Low hot water flow
A tankless unit must sense enough flow to fire. Weak hot-water flow often means mineral buildup, a blocked inlet filter, a fixture restriction, or a unit sized below the home’s demand.
Error codes
Most modern units flash a code when something goes wrong. The code narrows the search, but it still takes diagnosis to confirm — and codes that keep returning deserve attention.
Scale buildup
In hard-water country this is the number-one tankless headache. Minerals bake onto the heat exchanger and internal passages, dragging down efficiency, swinging temperatures, cutting flow, throwing codes, or shutting the unit off.
See Water Filtration & Softener →Shuts off during use
A unit that quits mid-shower may have a flow fault, heavy scale, or a sensor on its way out. When it keeps happening, schedule service before a small fault turns into a dead unit.
Water around the unit
Dampness or drips can trace back to a valve, fitting, connection, condensate drain, or a neighboring pipe. If the wet spot keeps growing, call — and look into leak detection when water is hiding.
See Leak Detection →Repair, installation, and maintenance
What your unit needs depends on its age, condition, setup, and symptoms.
Tankless repair
Reading error codes, testing performance, tracing flow trouble, dealing with scale, and repairing worn or failed components.
Tankless installation
Tankless installation starts with sizing: the unit has to match the property’s hot-water demand, fixture count, fuel or power supply, and daily habits. An undersized unit falters the moment several fixtures run together.
Tankless replacement
When an older unit keeps failing, carries serious scale damage, repeats error codes, or needs repairs that cost more than it’s worth, replacement is the honest answer — based on its condition, never pressure.
Maintenance & descaling
Because water heats while rushing through narrow passages, hard water coats them with scale. Descaling flushes that buildup out; how often it’s needed depends on your water, your usage, and the unit itself.
Signs your tankless unit needs attention
A tankless unit usually gives warning before it quits for good.
Hot water turns cold mid-use
When hot water fades halfway through a shower or sink session, the unit may be losing the battle with flow, scale, or demand.
Hot water takes longer
Hot water arriving later than it used to is an early sign the unit wants maintenance or repair.
Flow feels weaker
Thinning hot-water flow can mean buildup, a clogged filter, restricted fixtures, or internal wear slowing the unit down.
Error codes keep showing
One error that clears on its own is one thing — codes that keep returning are the unit telling you something is wrong.
The unit can’t keep up
If the unit handled your routine fine before and now lags, scale, worn parts, or a change in demand may be behind it.
Water near the unit
Dampness, drips, or water pooling under the unit need checking — the source may be a fitting, valve, drain connection, or a nearby pipe.
Tankless or tank water heaters
Tankless doesn’t suit every property — plenty of homes are better off with a tank heater.
When tankless makes sense
Save space, skip the storage tank, heat on demand.
When a tank may be better
Simpler setup, lower upfront cost.
Hard water and tankless systems
Because tankless units are so sensitive to scale, the local water here matters a lot.
Hard water symptoms
Hard water leaves minerals behind wherever it heats up. In a tankless unit, those deposits coat the heat exchanger and choke internal flow passages.
Why scale matters
Scale forces the unit to labor: flow drops, temperatures swing, codes trip, and service comes due sooner. Left alone, a minor layer becomes a major failure.
Descaling protects performance
Scheduled descaling clears mineral buildup before it causes real damage. The right interval depends on the unit, how much water you use, and your water quality — a softener can stretch it further.
Coastal humidity & wear
Warm, humid, salt-laced coastal air wears on components, fittings, valves, and connections. Spotting rust, leaks, and performance drift early keeps small trouble small.