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Weil Maclain S3 Boiler

Ultra Gas S3 CT Gas Boiler

Weil Maclain S3 Boiler

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Product Features


Boiler Intelligence for Every Heating Need
Optimal Efficiency for Multiple Temperatures
Quick System Presets to Match any Application
Seamless Multiple Boiler Control


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

Customer Feedback

What Customers Say About our Services Oved by number of customers throughout GTA!

We have been thinking about changing our 25 years old Ac for quite some time. Finally, last month we decided to change. We come to know about cosmopolitan through Lennox website.We got a very reasonable quote from cosmopolitan. Installation was done by the installer Dave. Very professional workmanship definitely deserves to be recommended.
Nadia & Norman A
If you need someone to repair your furnace or air conditioner call Cosmopolitan. We did and were very happy at the response and the cost a lot less than I had thought it might be. Greg gave me some good maintenance advice as well. We will call them from now on to do our pre season check and maintenance. It'll be well worth it.
Heather K. & Peter C.

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