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Understanding Commercial Boiler AFUE and Thermal Efficiency Rating

Jan 21, 2021


When you purchase a new boiler, you may see several different energy-efficiency ratings in the documentation. The first is the Annual Fuel Utilization Efficiency (AFUE). The second is the thermal efficiency rating, and the third is turndown ratio. Your boiler’s AFUE rating indicates the fuel efficiency of the boiler while the thermal efficiency rating refers to how efficiently your boiler transfers heat to the water. The turndown ratio indicated how scalable the boiler is in relation to the needed heating load. The good news is that we can explain the meanings of these designators and help you choose the best boiler for your building and your budget.

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The Primary Cause of Boiler Inefficiency

Dec 27, 2018

Boiler inefficiency can cost your business hundreds if not thousands of dollars each winter. Thankfully, there is one thing you can check immediately and have repaired, if needed, to help you keep your heating bills low this season.

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Why Old Radiators Overheat and What to Do About It

Dec 19, 2018

Have you noticed hot and cold areas in your apartment complex? Most older radiators contain valves that only have two settings, including open and closed. Thankfully, there are ways to improve your steam boiler's efficiency and the comfort of your Chicago multi-family building.

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Energy Efficient Boiler Retrofits with Hydronic Controls

Nov 28, 2018

Does your multifamily building in Chicago have a steam or water boiler that supplies your winter heat? If it does, you may benefit from having hydronic heating controls installed. Installing hydronic heating controls can help keep your residents comfortable and eliminate hot and cold areas in your building.

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2 Main HVAC Maintenance Concerns for a Multi-Unit Property

Sep 26, 2018

When it comes to maintaining your heating and cooling units, there are two primary systems. The first system is the heating unit. The second concern is the control unit. These two items need to be maintained on a regular basis in order to keep your residents comfortable all year long.

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Handling Emergencies with Mechanical Equipment Insurance

Aug 16, 2018

When it comes to making sure your Chicago facility is prepared for an emergency, it pays to have mechanical equipment insurance. Insurance products are designed to protect you against extreme and unforeseen financial losses due to sudden catastrophes.

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FAQ: Are Condensing Boilers More Efficient than Non Condensing Boilers?

Oct 19, 2017

When it comes to providing your building with reliable heat, it can be difficult to choose between the traditional non condensing boiler and the newer condensing boilers. In general, if you need the highest possible energy-efficiency rating, you should choose a condensing boiler. If cost to install is your primary determining factor, you may want to install a non condensing boiler.

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The Expense of Boiler Preventive Maintenance vs. Emergency Service

Jan 17, 2017

When it comes to keeping the boiler in your Chicago residential high-rise functional, do you schedule regular boiler preventive maintenance or do you wait for the boiler to completely fail before calling for HVAC emergency service? Both have their benefits and drawbacks. The biggest one being cost.

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Are Your HVAC Boiler Sub Components Leading to Efficiency Loss?

Jan 12, 2017

How reliable and energy efficient is your current HVAC boiler system? If all you’ve done this year is turn on the system and check that heat is being produced, your system may not be operating as efficiently as it could be operating. This is because all of the components of your boiler work together to heat water and pump that water or steam through your boilers pipes to your radiators.

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