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Weil McLain Ultra Series 3 Gas Boiler Review




The Weil McLain Ultra Series 3 Gas Boiler is a Modulating Condensing Boiler and was introduced in July, 2008 offering consumers one of the highest efficiency gas boilers available. Weil McLain was founded in 1881 and is an industry leader in the comfort heating industry. Weil McLain has its headquarters in Michigan City, Indiana and has a manufacturing facility in Eden, North Carolina. Weil McLain has over 700 employees around the world. The Weil McLain Ultra Series 3 Gas Fired Mod-Con Boiler is the culmination of 128 years of experience in the comfort heating industry. The Ultra Series 3 has good looks and good efficiency to go along with it.

The Weil McLain Ultra Series 3 Modulating Condensing Gas Boiler Comes in five models that range from 80 MBH to 310 MBH all with 20 – 100% modulation and have efficiencies in the range of 92 – 93% AFUE. The Weil McLain Ultra Series 3 is a Low NOx burner which means it puts out very low levels of Nitrogen Oxides which is a major component of photochemical smog, causing NOx emissions to be regulated in some parts of the country. The Modulating Burner burns between 20 and 100% using only as much fuel as you need to provide heat to your home. The Condensing Boiler design soaks so much heat out of the flue gases that were previously unused in older designs that the steam in the flue gases condenses back into water making these ultra high efficiencies possible. When the Ultra 3 is used in low temperature applications like radiant heating efficiencies as high as 98% AFUE may be realized. This gives the Ultra 3 Modulating Condensing Gas Boiler a minimum AFUE Efficiency of 92 – 93% and qualifies the Ultra to carry the Energy Star Seal. This makes the Weil McLain Ultra 3 eligible for rebates of $50 – $200 under the Appliance Stimulus Package as well as grants under the Weatherization Assistance Program of up to $6500, it also qualifies for a $1500 Energy Tax Credit making this fall a very good time to have an energy efficient gas boiler installed in your home. In addition to saving money on your heating costs you can save the environment with the Weil McLain Ultra 3 Low NOx Boiler. The Ultra 3 is certified to meet the Low NOx requirements of the South Coast Air Quality Management District.


The Weil McLain Ultra Series 3 Gas Boiler features a stainless steel burner assembly, aluminum boiler for better heat transfer, 30 PSI relief valve, drain valve, direct spark ignition, variable speed blower, venture mixing system with air silencer, negative pressure regulated gas valve, 50 VA transformer, dual scale T & P Gauge, sensors for outlet water, inlet water, outside temperature, flue gas temperature, and system temperature. Also provided is a Taco circulator pump, side wall vent air termination kit, power switch, service receptacle, condensate trap with drain tee assembly, and a propane conversion orifice on some models.

The Weil McLain Ultra Series 3 also features a unique control module referred to as the U – Control Module. The U – Control Module features a 3.5” LCD screen where the functions of your boiler can be read including service scheduling, proper function, service alerts to tell technicians problems The U – Control Module also provides temperature management giving you the chance to have one boiler with up to 3 different temperature set points for operating zones with different temperature requirements. The U – Control Module provides low water cut out, system temperature sensing and outdoor temperature sensing and reset to automatically compensate for changing seasons and maximum efficiency along with many other features.

The Weil McLain Ultra Series 3 Modulating Condensing Gas Boiler is an excellent choice to upgrade your heating system and there is no time like this fall with the unique combination of Rebates, Grants, and Tax Credits to make upgrading affordable.