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ASI's Green HVAC News - Future Technologies
HVAC Sales, Services, Repairs, Installations and Consumer InformationGreen HVAC Technologies of the future
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As with many other technologies the costs for the latest and greatest gadget reduces as technologies catch up and as a result of competition in the marketplace.
Some of these technologies today include variable speed air handlers and furnaces and while the term variable speed is used loosely in this author's opinion, the cost savings are real and the added comfort from less noise and drafts is also very real. While two stage gas and modulating gas valves have been around for awhile the concept has advantages for comfort and not so much for energy savings because it still takes the same amount of heat to heat a space no matter what you do to the heat source itself.
However when you combine that variable speed furnace with the modulating gas valve suddenly there is an advantage for energy savings from the electric motor, the reduce fire rates of the modulating gas valve allow for the furnace to run at lower speeds when the space is under reduced demand for heat. Do not be confused, the variable speed furnaces today will slowly speed up to several preset speeds and will normally run at those preset speeds for the duration of the heating or cooling cycle and slowly ramp back down and turn off.
This is actually necessary for the system to operate properly and is nearly unavoidable in the heating cycle and more so for the air conditioning cycle with today's technology. Well, at least for now.
The technology exists today that allows for full modulation of all the components, heating, air conditioning and fan speeds all linked together to run a variable rates. These technologies are somewhat new and are gaining ground in the commercial world. Variable speed water chillers have surged into nearly all new facilities except the smallest, but that is now also taking the next step in gaining the full variable rates available from the equipment with the development of what is known as primary variable flow where the water pump is fully variable directly with the water chiller. Normally the chiller required a set specific flow of water at all times just like the residential systems require the same set air flow or fan speeds for their operation to work correctly.The next generation of residential heating and air conditioning systems will follow this trend, while it could take a decade or more to become cost effective the concept where the entire heating and cooling system on a home is fully variable will be common place one day, whether it be a gas furnace with air conditioning or a heat pump and even a geo-thermal heat pump with their fans and blowers all running at variable rates together for the maximum energy savings from the equipment while operating fully optimized for the actual demand or load at any given time.
ASI's HVAC and Home Improvement Articles HVAC Contractor Air Conditioning Refrigerant Rip Off One of the more common things we see are air conditioning systems that have been overcharged with refrigerant. This common rip off is usually done when you call for a simple maintenance service and they... HVAC Heating Air Conditioning Capacitor Rip Off Another common practice by dishonest contractors is to replace a simple small part that many times is not necessary. The capacitor is one of those parts that is relatively inexpensive... The Geo-Thermal System Explained in a Nut Shell Geothermal is by far the highest efficiency heating and cooling system available today. While the systems require up to three times more investment upfront than a conventional heating and cooling system... Ameri-Serv, Inc. Heating and Cooling News Ameri-Serv Inc Helping the Treasure Valley Community Ameri-Serv, Inc. Heating and Cooling has successfully helped dozens of Treasure Valley Families with thousands of dollars worth of free maintenance services and repairs through this holiday... |
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ASI's Heating Related Articles
  If
your Gas Furnace is an older gas furnace (usually 10 plus years old) it
may have a standing pilot light like a water heater, if this is the
case carefully follow the instructions on the furnace to light the
pilot. Some models have an intermittent pilot light or spark ignition
and you can usually hear the the system try to light the pilot flame
with a spark .. |
  Maintaining
your gas heating furnace system is important both to help make the
system last longer and to help keep the operating costs as low as
possible. All furnaces should be cleaned and inspected annually and
there are some things you can do yourself to save money but everyone
should call a qualified technician to inspect the system every fall as
well as to make any necessary repairs. |
  The
first thing that must happen is that the control thermostat must
provide a voltage signal to the furnace heating unit. The thermostat can
be most understood as simply a switch that turns a low voltage 24 volt
power on and off to the respective terminals. In the case of the
thermostat calling for heat the thermostat switches on the .. |
  Homeowners
can help prevent failure of their oil or gas furnace heat exchanger by
simply maintaining their system regularly. This includes having an
annual inspection of the system which should always including cleaning
of the blower and cabinet. More importantly the homeowner needs to make
sure that they maintain and clean or change their system air filters |
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