Retrofit or replacement
Swapping one tankless for another is simple. Converting from a tank means new venting and often a larger gas line, and that is where conversion quotes vary.
Tankless Water Heaters
Tankless Water Heaters in Denver, CO
Thinking about going tankless in Denver, CO? Elite Rooter installs, services, and maintains tankless water heaters. You get endless hot water in a smaller footprint, and a well-maintained unit outlasts a tank. We size the unit to your home, handle gas and venting to code, and service every major brand.
Common signs
Signs you may need tankless water heater service
One symptom can be minor. Several together usually point to a larger issue.
- You keep running out of hot water with a tank unit
- You want the space a wall-mounted unit frees up
- Your current tankless shows error codes or runs lukewarm
- An existing tankless is overdue for descaling
What we handle
We match the repair to what is actually happening inside the system.
Explore Tankless Water Heaters company-wide.
Tankless installation
Sized to your fixtures and gas supply, vented and permitted to code. The unit hangs on a wall and frees the floor space a tank occupied, which closets and garages appreciate.
Repair and error-code diagnosis
We service every major brand and carry the common failure parts. Tankless units tell on themselves: the error code plus combustion readings usually name the problem before anything is disassembled.
Descaling and maintenance
Hard water scales heat exchangers; periodic descaling keeps efficiency up and failures down. Descaling is a service-port flush, roughly annual in hard water, and it is the difference between a 20-year unit and a 12-year one.
Honest tank-vs-tankless advice
Tankless isn't right for every home, so we price both and let you decide. Tankless wins on endless hot water, lifespan, and space. A standard tank still wins on upfront cost and simplicity. Which one wins for you depends on your house and habits, and we will actually tell you.
Pricing factors
Tankless Water Heaters Costs
Tankless pricing has two honest parts: the unit, and whether your home's gas, venting, and water lines are ready for it.
Gas supply sizing
A tankless burner draws several times the gas of a tank heater when running. If the existing line is undersized, upsizing it is part of the real price.
Flow demand
The unit is sized to simultaneous use: two showers and a dishwasher at once needs more capacity than a one-bathroom house.
Water quality prep
In hard-water areas a scale filter or conditioner protects the heat exchanger, and skipping it shows up later as a descaling habit or a warranty argument.
Offer details
Offers for Denver
Call to confirm availability, eligibility, and terms for the service address.
Water Heater Installation as low as $95/month
Financing is available on qualifying jobs. See financing options.
Google reviews
Denver Customer Reviews
Felix F.Westminster Google Business Profile
★★★★★
Google review · 2026-05-25View Westminster Google Business ProfileThe techs were knowledgeable, timely and friendly. Lewis specifically was great and provided knowledge beyond just the water heater replacement. Both the wife and I were psyched. We will refer and return!
Courtney B.Westminster Google Business Profile
★★★★★
Google review · 2025-04-17View Westminster Google Business ProfileI called Elite Rooter with a problem with my tankless hot water heater... Within 5 minutes, Kevin had my hot water heater running and back to its normal function! I will definitely be using Elite Rooter from here on out. Thanks so much!
Archie W.Westminster Google Business Profile
★★★★★
Google review · 2025-04-10View Westminster Google Business ProfileElite Rooter- Professionalism personified! Ease in reporting our problem. Asked questions that got right to the point. Short period of time waiting for dispatch. Carlos is tha dude! Knew his stuff. made sure I completely understood the repair process. Handled the water heater install with expertise. Was very thorough and respected my home. Pleasant demeanor. Would recommend to anyone!
Elite Rooter local coverage
Denver, CO
Service availability varies by address. Call with your Denver address to confirm coverage before booking.
(720) 460-9944See local details on the Denver plumbing page.
The McNichols Civic Center Building stands at the northwest corner of Civic Center Park on Colfax Avenue.
Driving route to Civic Center Park From our Westminster office to this local reference point. We come to your service address.
More local service areas: Lakewood, CO · Aurora, CO
Our people and our work
Elite Rooter in the field
Scroll to see our team, equipment, and plumbing work.
Water heater service 
Water lines and pipework 
Tools for the job The people behind the work
Questions before booking
Frequently asked questions
Do you offer tankless water heaters in Denver?
Coverage depends on the exact address. Share the Denver service address when you call or book so the team can check it.
Do tankless water heaters need maintenance?
Periodic descaling keeps a tankless unit efficient, especially in areas with hard water, and we service the major tankless brands.
Is a tankless water heater worth it?
If your household runs out of hot water or you're replacing an aging tank anyway, often yes: longer lifespan and endless hot water. We'll give you real numbers for your home rather than a generic pitch.
Will a tankless really give me endless hot water?
Endless in duration, limited in simultaneous flow. A properly sized unit will run a shower indefinitely, but three showers at once can outrun a small one. Sizing to your real usage is the whole game.
Schedule service
Elite Rooter Denver
(720) 460-9944 · Mon-Fri 6am-6pm, Sat 7am-4pm · PC.0004173