Water heaters
Tankless water heaters
A tankless water heater heats water as it flows, so it doesn't run out, but it needs a larger gas line, its own venting and a unit rated for your elevation. Installed correctly and descaled regularly, it can outlast a tank heater.
- Licensed Colorado plumbers
- The problem explained before work starts
- Price agreed before the job begins
About tankless water heaters
Tankless is popular in Front Range remodels because it frees floor space and ends the 'last shower is cold' problem. The catch is the install: most homes need a gas line upgrade, and high-altitude derating means a unit has to be sized with your elevation in mind.
Existing tankless units need periodic descaling, and error codes often point to venting, gas supply or a dirty inlet screen.
Tankless water heaters at a glance
- Urgency
- Usually plannable
- Area
- the Denver metro & Northern Colorado
- Who does the work
- An independent, licensed Colorado plumber
- Permit
- Often required for replacements, repipes, sewer, water and gas line work
- Typical steps
- Load and gas check → Plan venting → Install and permit → Maintenance
- Availability
- Call now to check plumber availability
Signs you need tankless water heaters
- Running out of hot water with a tank heater
- Needing floor space in a small utility room
- A tankless unit showing error codes
- Water temperature swinging during a shower
- No descaling in several years
How the job usually goes
- 1
Load and gas check
The plumber calculates flow demand and confirms the gas meter and line can supply the unit.
- 2
Plan venting
Vent route and termination are planned to meet the manufacturer and local code.
- 3
Install and permit
Gas, water, venting and condensate lines are installed and inspected.
- 4
Maintenance
Existing units are flushed with descaler and the inlet filter cleaned.
What affects the cost
Every job is priced by the plumber after they see it. These are the things that move the price most. Ask for the price before work starts.
- Unit size and altitude rating
- Gas line upgrade
- Vent route length
- Condensate drain
- Removing the old tank
Tankless water heaters questions
Do tankless water heaters work at high altitude?
How often should a tankless heater be descaled?
Will a tankless heater work with my existing gas line?
How long does a tankless water heater last?
Do tankless water heaters give unlimited hot water?
Can a tankless heater use the old water heater vent?
Why does my tankless heater show an error code?
Tankless water heaters near you, by town
Related
Related plumbing services
Water heater replacement
A leaking tank or a heater past about 10 years old is usually replaced rather than repaired.
Learn moreWater heater repair
If a gas water heater has no hot water, the pilot, thermocouple or gas valve is the usual cause; on an electric heater it's usually an element or thermostat.
Learn more
Gas line repair & installation
If you smell gas, leave the house, then call your gas utility's emergency line or 911 from outside.
Learn moreGuides
Read before you call
Water heaters
No hot water? What to check first
On a gas water heater, check that the pilot is lit and the gas valve is on. On an electric heater, check the breaker and the high-limit reset button. If the pilot won't stay lit, the breaker trips again, or you smell gas, stop and call a plumber.
Costs & planning
Repair or replace your water heater?
Repair when a replaceable part failed on a heater under about 8 years old. Replace when the tank itself leaks, the heater is past 10 to 12 years, or repairs keep adding up. A leaking tank can't be repaired.
Water where it shouldn't be? Start with a call.
Tell us what's going on and your ZIP code. You'll be connected with a licensed plumber who serves your area.
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