Helix VLT - Vertical Laser Tube


  • Innovative. Efficient. Dependable. Dunkirk.
  • The new Helix VLT features an EnergyStar rating of 96%. 
  • The VLT's high efficiency along with Sealed Combustion and Outdoor Temperature Reset add up to BIG savings!

Q95M-200 Modulating


  • Dunkirk's Q95M-200 gas-fired, modulating condensing boiler was the first boiler to achieve a 95% AFUE rating. 
  • This boiler is perfect for heating equipment replacement jobs where you’re looking for high efficiency.

DXL Series


  • Up to 83.5% AFUE Gas Fired Hot Water Boiler.
  • Dependable Cast Iron Heat Exchanger by using similar materials instead of less expensive gaskets the boiler maintains a water tight seal over time.

ECO Wall Mount Gas Boiler


  • Class-leading 70,000, 110,000, and 155,000 BTUH models
  • Exceeds Energy Star requirements at 95% AFUE efficiency rating
  • Durable stainless steel fire tube heat exchanger
  • Streamlined design configurable for installation
  • Display can be mounted on the boiler or wall (up to 2’ away)
  • Components positioned for fast and easy service
  • Multiple vent configurations and material options
  • Optional accessories to match virtually any installation

Ultra 94.1% Efficient


  • Gas fired water boiler with cast aluminum heat exchanger
  • Venturi mixing body mixes air and gas providing higher efficiency
  • Designed to operate in low temperature condensing applications
  • Outdoor reset and domestic hot water priority standard
  • Negative regulated gas valve precisely delivers gas to the boiler
  • U-Control gives you the power for easy set-up and maintenance
  • Modulates with 5 to 1 turn-down ratio
  • Variable speed motor matches combustion output to heating needs
  • High grade stainless steel burner features quiet operation, high efficiency, and cleaner combustion for low NOx applications



  • Leading High Efficiency Cast Iron Boiler at 91% AFUE
  • Low maintenance durable design
  • Easy setup with streamlined controls
  • Worry free operation

CGa - Gold Series


  • High-Efficiency​
  • Easy to Service​
  • Quality Material​
  • Residential and Light Commercial

15B Series II


  • Quality Heat Exchanger Design - The 15B Series II features a robust cast iron heat exchanger for longer boile life. The sections are connected with cast iron push nipples, which expand and contract at the same rate as the sections ensuring a water tight seal. Available in a full range of sizes from 45 MBH up to 295 MBH Input capacity.
  • Efficiency - The 15B Series II provices an annual fuel utilization efficiency of 82% as certified by the US Department of Energy testing standard.

Radiant HeatING


Uponor Radiant Floor Heating Systems for the Home

Uponor, formerly Wirsbo, was the first to bring PEX radiant floor heating to North America more than 40 years ago. Today, Uponor radiant floor heating systems are bringing the energy-efficient luxury of radiant floor heating to the masses for a simple, affordable solution to home comfort.In an Uponor radiant floor heating system, warm water flows through flexible, durable crosslinked polyethylene (PEX) tubing that is embedded under the floor. The warmth radiates up from the floor to warm objects and people in a room. It is the purest form of human thermal comfort.

Radiant vs. Forced Air

The water in a radiant system has a capacity to transport energy 3,500 times greater than air, so it can heat (and even cool) using less energy than a forced-air system. This amounts to greater comfort at a lower thermostat setting, which provides lower energy bills. In fact, more people are comfortable with radiant floor heating at a lower thermostat setting than with forced-air heating at a higher thermostat setting.


24 Hour Emergency Service Available

To get a free estimate, or for emergency service, please contact us at your convenience. We look forward to serving you!

Assured Air, LTD.

8440 Archer Avenue, Willow Springs, Illinois 60480,

(708) 839-5760


Monday - Friday: 8:30am - 5pm

Saturday:  9am - 1pm or by appointment

Sunday: Closed

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