Cook County Gas Boiler Installation Services


Hydronic heating has been a popular and reliable winter heating choice for more than a century in Skokie, IL and surrounding towns. Ultimate HVAC installs both Weil McLean® and Navien boiler installations in both residential and commercial settings.

Weil McLain Boilers: US Made Quality

Weil McLain Boilers

Ultimate HVAC features Weil McLain® boilers for both existing system replacement, and as a great choice in new construction. Weil McLain® offers both traditional cast iron gas boiler for both water and steam distribution, and modern stainless steel condensing gas boilers.

Our experienced heating techs can evaluate your system needs, and recommend the prefect system to meet your needs. Configuration choices include:

  • Fuel Type: Gas or oil boilers
  • Distribution Type: Traditional water or steam heat distribution
  • System Mounting: Traditional floor, or space saving wall mounted boilers
  • Heat Exchanger: Traditional cast iron or stainless steel heat exchangers
  • Efficiency: Gas fired efficiencies from 80% to 96% AFUE
  • Venting: Traditional chimney venting, or high efficiency plastic venting
  • Domestic Hot Water: Indirect hot water tanks or ultra-modern combi boiler systems

Gas Boiler Rebates

Nicor Gas, our local natural gas utility, offers attractive rebates of up to $350 for replacing your existing older gas furnace with a new 95%+ AFUE natural gas boiler. Click for the details.

Navien® Boilers: Highest Technology

Navien Boilers

Since 2006 Navien® has become one of the fastest growing companies in the home comfort sector and is now a leader in condensing technology, providing combi-boilers and condensing boilers. Naviens products possess state-of-the-art technology, high efficiency and reliable quality.

All Navien® boilers feature:

  • EnergyStar: 95% AFUE efficiency
  • Stainless Steel Heat Exhangers: resists corrosion better than copper or cast iron for longer life.
  • High Turndown Ratios: The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive combi-boiler cycling and enhances temperature control for DHW.
  • Low Noise Levels: Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running Navien® combi-boilers.
  • Multiple Venting Options: Low exhaust gas temperatures allow use of PVC, CPVC, polypropylene (rigid and flexible) and stainless steel venting reducing installation time and costs.
  • NaviLink™ Wi-Fi Control System: The NaviLink™ Wi-Fi control system provides access to your heating system from anywhere in the world

Combi Boilers feature both efficient heating, and instantaneous tankless domestic hot water in one compact design. Combi Boiler Also Include:

  • High Flow Rates: Separate stainless steel flat plate heat exchanger for DHW creates one of the highest flow rate for any combi‑boiler in the industry.
Navien Boiler

Click the Navien and Weil McLain logos above to learn more about the boilers we carry.

Boiler installation services

Professional Boiler Installations

Our licensed and experienced heating technicians will evaluate your application, careful determine the proper boiler, and help you decide what technology will best meet the needs of your application and your budget.

Boiler Repair Services

Boiler Repair Service

If you need emergency service, or if your existing hydronic system need a pre-season tune-up, or Ultimate HVAC can help. We offer complete boiler service regardless technology or brand. Click here for the details.

Locally Owned

Ultimate HVAC is local owned and has decades of experience providing boiler installation and repairs for Skokie area homeowners and businesses.

Guarantee Peace of Mind

Ultimate HVAC is committed to your needs and satisfaction regarding 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.
Licensed and Insured: Ultimate HVAC is licensed and insured to do furnace, boiler, air conditioning, and water heating work throughout Cooke County.

Factory Trained

We have completed manufacturer training and are a Weil McLain® and Navien® dealer.

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