Humidifiers and Comfort – HVAC Healthy Living

Humidifiers and Comfort

Humidifiers and Comfort  – It’s winter time, and your skin and sinus’s are dry. Did you know that this condition not only extends to yourself and your health but also to your home? The furniture, doors, and other wood products in your home are all affected by the level of humidity.

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Humidifiers and Comfort
Ever notice in the winter time the doors don’t close just right inside your home? Ever get static-shock when you touch something or someone? This is caused by dry air. The solution is a humidifier. There are many types of humidifiers from portable to fixed. The prices for these humidifiers also vary. Naturally the fixed will cost more and you will most likely have to hire a contractor to install it, but the humidifier will definitely make a big difference not only for your health, but also for your home. (more…)

Commercial Boiler Stack with Economizer | HVAC Heating

Commercial Boiler Stack with EconomizerCommercial Boiler Stack with Economizer | HVAC Heating

Commercial Boiler Stack with Economizer – This is not a normal commercial boiler stack in this boiler room. It has a bypass stack for an commercial hot water economizer. All boilers have make-up water to make up for water lost in the systems especially for domestic hot water use. This hot water boiler system also served the domestic water needs for the local community where these boilers provided heat. Notice the dampers on the stacks (both the vertical and the horizontal stacks). These are controlled by a direct digital controller, located in the boiler room, and cause the hot gas to be diverted to an commercial hot water economizer instead of outside. Inside the boiler economizer were coils where the cold water supply water from the city was routed. This cold water supply was for domestic hot water use. Domestic hot water use is hot water for showers or the sinks for washing dishes or your hands. The water supplied from the city was typically fifty degrees Fahrenheit. After running through this cold supply water from the city through the boiler economizer the water was almost ninety degrees Fahrenheit. This system saved the organization money by using the heat from the gas stack gases. Instead of dumping it outside where it would be dissipated into the outside air it was routed through the commercial hot water economizer where it pre-heated the cold water supply for domestic hot water use. The commercial hot water economizer will help pay for itself and many other things by making the boiler room more efficient. (more…)

Gas Furnace Maintenance Agreements

Gas Furnace Maintenance Agreements - Gas Furnace Checklist and Tips for Periodic UpkeepGas Furnace Maintenance Agreements – In the commercial environment maintenance is a never ending cycle from winter to summer. In contrast the residential environment sometimes maintenance is neglected until there is a problem with either the heating or cooling system. Why wait for something to happen when there some simple things you can do to make sure your heating and cooling run at optimum levels by performing some basic maintenance on your heating and cooling system. For those who do not have the skills or time to perform the basics themselves then it is recommended that you subscribe to maintenance agreement through a professional HVAC company. Of course it always recommended that a professional do the work as they are most familiar with HVAC systems and can do the job quickly and efficiently as well spot things that could go wrong over the course of the heating or cooling season.
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Fan Maintenance Energy Savings

Fan Maintenance Energy Savings

Proper HVAC Fan Maintenance and Control can save Energy Dollars

Fan Maintenance Energy Savings – According to the Department of Energy fans consume nearly 80 billion kilowatts of energy per year. Optimizing how fans work functionally in mechanical applications can reduce energy use and save energy dollars for end users. Assuming the design engineer selected the proper fan and proper installation in well designed system what can a facility manager do to save energy dollars and increase performance by looking at the fan systems in their building(s)? To make a good evaluation you need to look at several different factors in fan operation.

  • Fan Control
  • Fan Performance
  • Installation
  • Ductwork
  • Fan Maintenance

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York Variable Frequency Drives VFDs | HVAC Control

York Variable Frequency Drives VFDs

York Variable Frequency Drives VFDs | HVAC Control

York Variable Frequency Drives VFDs | HVAC Control – Variable Frequency Drives or VFD’s have added a whole new dimension to energy efficiency and control. These drives, or VFD’s, are hooked up to two different York VAV air handlers that have two three phase motors a piece. Each air handler has a return fan and a supply fan. Two thirds down stream from the supply fan motor is a static pressure sensor (Pressure Transducer). This is connected back to a DDC controller which will regulate the speed of the fans based on the static pressure set point. Variable frequency drives, or VFD’s, allow the system to use only the amount of air that is needed for the VAV boxes. If demand for air flow is high the drives, VFD’s, ramp up and deliver more air. If the demand for air flow is low the drives, VFD’s, slow down so less air is delivered. This allows the system to use less energy and maintain comfort levels based on temperature set points.

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