Northern Metro Chicago Hot Water Systems


After your heating and AC system, your hot water heater is the most important appliance in your home. At Ultimate HVAC, we have provided full water heater service for metro Chicago for decades. Whether you need a new efficient water heater, or need water heater repair we have the NATE certified and licensed professionals that can help.

Ultimate HVAC is your local tank water heater service expert.

Considering a New Water Heater?

You now have the choice of traditional tanks, heat pump water heaters, or tankless hot water systems. We feature AO Smith electric and gas-fired tank water heaters and heat pump water heaters and Navien® tankless water heaters.

Ultimate HVAC is your local ductless mini-split repair specialist.

A. O. Smith Electric or Gas Fired Tanks

A. O. Smith’s selection of residential and commercial water heaters is unmatched for quality and diversity. Anywhere hot water is needed, A. O. Smith can provide an energy-efficient solution with maximum value during and for years after installation. If your existing tank system fails, we stock direct replacement systems that often can be installed in your Skokie, IL area home or business in the same day. Conventional water heaters are often the lowest installed cost choice for replacing an existing system.

Hybrid Heat Pump Water Heaters

Higher efficiency water heaters include higher performance gas fired tanks, hybrid heat pump water heaters and gas tankless water heaters. Hybrid heat pump water heaters from AO Smith extract heat from ambient air and utilize it to heat your domestic hot water. They use only a third of the energy of a traditional electric tank water heater.


Professional Licensed Water Heater Installations

We offer 24 /7 water heater service and replacement. Our licensed and NATE certified plumbing staff can help you choose the right water heater for your application and budget, and get it installed quickly and professionally.

We feature gas tankless water heaters from Navien®. To find out if a tankless water heater is right for your click here.


Water Heater Repair

If your home or business has a water heater problem, we're here to help 24 / 7. We have the experience and parts inventory necessary to service all major types and brands of water heaters. We will quickly diagnose the problem and provide you with a comprehensive, fair estimate.

A.O. Smith tank water heater
A.O. Smith

We carry A.O. Smith tank water heaters.

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.

Factory Trained

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

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.

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