Skokie, IL Professional Tankless Service


Tankless water heaters have become increasingly popular in Cook County, IL. Many area companies install tankless water heaters but very few have experience and depth of service experience for tankless water heater applications in area homes and businesses that comes from Ultimate HVAC!

Navien tankless water heater
Navien Tankless Water Heaters

Click the Navien logo above to learn more about the tankless water heaters we carry.

Ultimate HVAC is your local tank water heater service expert.

Ultimate HVAC offers emergency service for all brand and models of tankless water heaters including Rinnai, Navien, Bosch, Noritz, Rheem and more. Tankless water heaters offer great efficiency and unlimited hot water for Skokie area homes or businesses. However they are technically advanced. Properly servicing tankless water heaters, regardless of brand, require extensive training, parts support, and years of experience. Tankless water heater service problems include:

  • Scale build-up: Causing reduced water flow, efficiency, and capacity
  • Inlet Water Filters Inlet water filters can become obstructed reducing water pressure and water flow'
  • Improper Venting: Block or obstructed air inlet or venting typically caused by heavy snow or improper installation
  • Gas Supply: Intermittent flame failures cause by gas pressure problems

  • Condensate Issues: Higher efficiency tankless units produce condensation. This water needs to be removed from the unit and system venting properly

  • Changes in Hot Water Quality: Changes wait times for hot water or fluctuating outlet water temperatures

  • Noise: Tankless water heaters are usually quiet. New noises or louder operation would indicate a service issue.

With our years of experience at Ultimate HVAC we know how great a properly installed and serviced tankless water heater can be. Almost all problems with tankless water heaters (or other modern HVAC equipment) are caused by improper installation, poor water quality, or improper maintenance. Take advantage of our expertise to help you enjoy many years of great tankless performance.

If you considering a new tankless water heater let us know. We'll help you determine if a new tankless system is right for you.

Comfort Club Tankless Water Heater Maintenance Plan

We offer home and business owners our Comfort Club tankless water heater maintenance program. With it we will ensure that your tankless water heater, regardless of brand, is maintained perfectly for decades of efficient endless hot water.

Water heater service and installation

Conventional and Tankless Water Heater Installations

Ultimate HVAC offers service and installation for traditional water heaters. Click here for more information.

For more information about our tankless water heater installation services featuring NavienĀ®, click here.

Locally Owned

Ultimate HVAC is local owned and has decades of experience providing water heater installation and service for Skokie area homeowners and businesses.

Guarantee Peace of Mind

Ultimate HVAC is committed to your needs and satisfaction regarding water heating, HVAC or indoor air quality.

Accredited A+ Rated BBB Member: Ultimate HVAC has been an Accredited Better Business Bureau member since 2017, and we are more than proud of our A+ BBB rating!
NATE certified: Nate Certified heating and cooling contractor.
EPA Certified: Ultimate HVAC is EPA refrigeration and air conditioning certified.
Licensed and Insured: Ultimate HVAC is licensed and insured to do furnace, boiler, air conditioning, and water heating work throughout Cook County.

Factory Trained

We have completed manufacturer training and are NavienĀ® and A. O. Smith dealers.

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