Murray Stacy asked:


Noise pollution caused by rooftop and ground-level HVAC equipment including chillers, boilers, and air handlers has become one of the most annoying as well as dangerous environmental problems in cities worldwide. As urban noise increases and residential growth multiplies, residents and communities are demanding better noise reduction solutions for heating, ventilation and air conditioning equipment. Outdoor community noise problems caused by commercial and industrial HVAC systems may require an acoustically engineered Sound Barrier Wall.

Sound barrier walls have been used extensively for years in the transportation and industrial fields. A sound barrier wall is an exterior structure, normally made of masonry or earth, designed to protect sensitive land uses, such as residential areas from noise pollution. These noise pollution abatement products are now being used to help eliminate unwanted noise from HVAC systems as well.

Traditional material for noise barrier walls for HVAC systems has been reflective products. Reflective products, like concrete or brick, simply redirect the unwanted sound waves in other directions, and can actually increase noise by unintentionally reflecting sound waves. There is a better solution. Absorptive sound enclosures and architectural screens actually absorb the unwanted sound waves, minimizing the risk of unintentional reflected noise. Absorptive sound walls reduce reflections and are able to maintain the effectiveness of the barrier. Therefore, the overall noise level is reduced. The advanced materials found in absorptive barrier walls present a much more effective noise barrier solution. There are different solutions for this problem such as the LSE System, an absorptive sound barrier created by Sound Fighter Systems, that actually absorbs the sound waves that hit it, thereby eliminating unwanted noise.

So, if you are facing problems with noisy HVAC equipment an absorptive sound barrier wall is obviously the most effective noise mitigation solution available for this very demanding application. Absorptive walls outperform and outlast all other noise reduction products. Plus, many systems such as the LSE System are an aesthetically pleasing HVAC sound wall with the added benefit of noise pollution reduction.



Scented Candles To Spice Up Your Home

digitalmonarch asked:


I just bought a 2004 Saab 9-3 Linear (4 Door) for my fiancee and it looks like one of the bulbs behind the HVAC is burned out. At night the bottom left hand side (the area around the temp knob) is not lit, and it’s rather annoying. Autozone couldn’t tell me which bulb to buy or how to get behind the panel to access the dead bulb. Can anyone tell me if there is an easy way to get back there?
Also - I would like to do the work myself and not involve the dealer if possible. Thanks!

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Peter G asked:


I am installing a new HVAC system in a house that has never had one. I have a 220 volt stove and about 10 open slots in my breaker panel. What do I need and how do I run wire for a new box for the HVAC?
I have done some minor 100 electrical work. If I wanted to pay a contractor to do it, I would not be asking this question. Please do not awnser, call a contractor.

Heat Pump Prices

Amy Nutt. asked:


One of the primary functions of any home is to provide you and your family with protection from the extreme elements. While we often think of this in terms of protecting us against the wind, rain, snow and worse sorts of precipitation, protection against extreme temperatures is also important. Most homes these days have some sort of HVAC (heating, ventilation and air conditioning) system. There’s nothing worse than having your HVAC system break down when you most need it.

That’s why preventative maintenance of HVAC systems is extremely important. A lot of people make the mistake of just letting their systems run until the break down, but by that point it usually costs a small fortune to fix. You are much better off either learning how to perform your own maintenance, or hiring a contractor to perform routine maintenance.

Chances are that your HVAC system will break down someday. Having regular checks will both reduce the chances of having a major and expensive malfunction, ensure that you can get it fixed before anything goes wrong. It can be frustrating to spend a few days in the blistering heat or bitter cold waiting for a repair technician to make it to your home. It’s much better to stay on top of things and head them off before they cause problems.

There are certain aspects of HVAC maintenance, such as refilling coolant, which can only be done by a licensed technician. For that reason it’s often much simpler and more convenient to have a technician just do a regular checkup every spring and fall. There are also certain things to look out for that might help you determine when to a call a repair technician.

For example, you should always pay close attention to the sounds that your HVAC unit makes. It should run relatively smoothly, with no banging or rattling or other abnormal noises. Another thing to look out for is strange smells that may emanate from your HVAC system. It can help to try and pinpoint where the smell is coming from so you can point it out to the technician. Of course, the surest sign that something is wrong with your system is if it isn’t heating or cooling properly. If you see any of these symptoms you should schedule maintenance.

If you want to do something yourself to help keep your HVAC system running smoothly, then the simplest thing to do is to clean it. If you have an outdoor unit, then leaves and dirt can frequently get stuck in or around it. It’s simple enough to brush them out and use a garden house to spray off any caked on grime, but of course you should be very careful. If you want to have a more thorough cleaning of the internals of the unit, you should call a trained service person.

An HVAC technician should be able to detect any potential problems in your system and fix them before your whole unit breaks. It may seem expensive, but it can save a lot of money in the long run.



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Alvin C asked:


In the HVAC equipment like chillers, ahu and fcu, SMBH and TMBH are always mentioned in the schedule. How is the calculation for this parameter?

Pellet Stove Comparisons

td2320 asked:


My existing HVAC system has insulated ductboard and I need to know what type of connection pipe should be used to connect my furnace into the ductboard? Part 2: Can you use crimped galvanized pipe without taking apart the ductboard?

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