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COMPANY PROFILE
Tankless Technology
Advertises tankless water heater installation.
Tankless Technology is an independent business that advertises water heater work. It is not our employee or partner and does not receive requests from Ember & Tank. We haven’t verified its license, insurance or workmanship.
- Tankless
- Repair
- Website
- tanklesstechnology.com ↗
- Water heater page
- Services page ↗
- Service areas they list
- Aurora, Batavia, Bloomingdale, Carol Stream, Downers Grove, Glen Ellyn, Glendale Heights, Hinsdale, Lombard, Naperville, Oakbrook, West Chicago, Westmont, Wheaton, Winfield Source ↗
- Information checked
- September 30, 2026
What Tankless Technology says about itself
- Tankless water heater specialist offering residential and commercial tankless installation and technical service; free estimates Source ↗
- Residential installation portfolio page Source ↗
The company’s own statements, not verified by Ember & Tank.
What the reviews say
Water heater replacement & service
Reviewers praised knowledgeable tankless servicing at prices below other quotes, help getting a manufacturer warranty replacement installed the same day, and a crew that worked late to finish a difficult conversion.
On Yelp, one reviewer (2017) said the company did not replace a leaking tankless unit under an extended labor warranty for days and they paid another shop $450, and another (2023) said two months of follow-up on a unit the company had installed left it unresolved; no company responses were captured.
See all 5 sources and details
Selected reviews · Checked September 30, 2026. Five of ten Yelp reviews (2017-2025) on the company's Glen Ellyn Yelp listing; BBB and Angi were not checked in detail. Not a complete history.
Yelp review
Mike O. · Jan 25, 2024
The reviewer said the owner diagnosed error codes on an 11-year-old tankless unit, got the manufacturer to authorize a warranty replacement, and installed an upgraded unit the same day for less than their original install cost.
Yelp review
Paul D. · Mar 8, 2024
The reviewer said the owner descaled their Rinnai tankless heater and replaced two worn electrodes for about half of another provider's quote.
Yelp review
W L. · Apr 11, 2021
The reviewer said the company gave an estimate within 24 hours of their 20-year-old tank failing and completed a difficult tank-to-tankless conversion within 48 hours, working until 11:30 pm.
Yelp review
Richard M. · Jan 12, 2017
The reviewer said a Rheem tankless heater bought with an extended labor warranty leaked; the manufacturer approved a replacement, but after many calls the owner said he was busy and could not source a unit, so they paid another shop $450 and went three days without hot water.
Yelp review
Brenda D. · Nov 29, 2023
The reviewer said a tankless unit the company had installed for the home's previous owners did not work properly, and after two months of chasing parts they were told it was a plumbing or user issue, so they hired another company.
Ask before booking: Ask how quickly the company commits to return for a warranty failure, and what happens if the replacement unit cannot be sourced locally.
Photos Tankless Technology publishes
Local guides that list Tankless Technology
Places the company says it serves on its own website. Check that it covers your address.
Before you book
- Ask for the license number and check it: IDPH plumber license verification ↗
- Get the exact model, the heater warranty and the labor warranty in writing
- Ask who gets the permit and books the inspection
- Compare the full installed price with another written quote