A single stage furnace will deliver the same amount of heat and airflow no matter what the temperature is outside. A 2-stage furnace with a 2-stage thermostat will begin in first stage (low burner, low airflow) and only go to second stage if the indoor temperature drops during first stage. This makes the furnace run longer, providing greater air circulation, temperature distribution, and air filtration. This also provides a more consistent indoor environment.

There are 2 main reasons for purchasing a variable-speed, 2-stage gas furnace: comfort and energy savings. Comfort: a 2-stage variable speed gas furnace distributes the air around your house more evenly, which results in better heating or cooling distribution. These types of furnaces make much less noise, which means less white noise in the background. Less noise, better heat distribution = more comfort. See similar questions...

Along with the reasons for purchasing a furnace with a variable speed blower system, consumers are now buying a modulating gas furnace because it offers the maximum efficiency (95%) throughout the entire modulating range. Modulating means the furnace raises and lowers the heat output of your furnace automatically, from 30% to 100%, and anywhere in between. See similar questions...

The efficiency ratings of furnaces is measured in AFUE as a percentage. AFUE stands for Annual Fuel Utilization Efficiency, and it's what furnace manufacturers use to inform us of the efficiency of their equipment. Standard efficiency gas furnaces have efficiency rating of 60% to 70%. Mid-efficiency gas furnaces have an AFUE rating of around 80%. High-efficiency gas furnaces (aka condensing gas furnaces) have efficiency ratings in excess of 90%. See similar questions...

Natural gas furnaces do burn more cleanly, a real advantage over oil because your chimney will never need cleaning, and there's no power burner and no jet to plug up as with an oil furnace. There could be several reasons, such as quality of the unit or its installation, loose sheet metal, incorrect fan speed, or improper furnace sizing. A physical inspection by a professional heating contractor should reveal the source of the noise in most cases. See similar questions...

One of the most common questions a Certified Loan Broker answers is, “should I choose a fixed or adjustable rate mortgage (ARM)?” The answer depends on many different factors including your income at the time of qualifying, the lender you are working with, current market conditions and how long you plan to stay in the house. Lets talk about your income first. Many first time buyers who are in the beginning stages of their careers will choose an adjustable rate over a fixed rate. See similar questions...

Variable speed air handling equipment runs at very low speeds, which keeps the air circulating against the cooling coil and removes much more moisture than conventional systems. At these low speeds, the variable speed motor uses much less electricity than conventional motors. Humidity is a problem in many areas. The best way to control excessive humidity is to have a system that runs longer at lower speeds. See similar questions...

This means that you can adjust the speed to any speed within the limitations of the engine and gearbox. Most mowers have either high or low or they have 1 through 5 gears. These units must go the speed of the gear you're in or you must manually change the shifter. This can make maneuvering a lot of work. With Swisher it is as easy as pushing down or letting off of the pedal with your foot. This is just one more reason why the Swisher Zero-Turn Radius has been sold for over 45 years. See similar questions...

Enter the pump data as a polynomial in the Pump Specifications window and then set the pump speed directly. No entry is assumed to be 100% speed. If you enter something other than 100%, AFT Fathom uses the affinity laws to adjust the curve. See similar questions...

Enter the fan data as a polynomial in the Compressor/Fan Specifications window and then set the fan speed directly. No entry is assumed to be 100% speed. If you enter something other than 100%, AFT Arrow uses the affinity laws to adjust the curve. See similar questions...

Session variables are stored in a structure, so you can use StructDelete <cfset variables.Result = StructDelete(session, "YourSessionVarName")> See similar questions...

Stage of cancer refers to the approximate size of a tumor. Prostate cancer staging is based primarily on DRE. Most men with prostate cancer have normal prostate examinations. This is referred to as stage T1c disease. A small abnormal area on DRE known as a prostate nodule is classified as T2a, a larger nodule as T2b. Patients with large nodules felt to represent tumor that has grown beyond the confines of the prostate or beyond the capsule have stage T3 disease. See similar questions...

Dual-stage, multi-stage or variable output are terms used to describe the operation of the air bag inflators in your air bag system that cause the air bag to fill. For dual stage or multi-stage inflators, the inflators may go off in two or more stages (steps) to tailor the amount of pressure in the frontal air bag during a crash. For a variable output inflator, the inflator can tailor the output across a range of inflation pressures. See similar questions...

For ordinary web browsing it will mean that the pages load far more quickly - the other meaning of WWW (World Wide Wait) becomes a thing of the past. File downloads will be faster as well. A 1MB file should download in seconds instead of over 3 minutes. It also enables watching movies and listening to internet radio stations in high quality. Connected Communities Broadband is symmetrical in the sense that upload (to the internet) and download (from the internet) speeds are the same. See similar questions...

Multi-speed fan can be thought of as a single speed fan able to operate at different speeds and thus producing different airflow. Variable speed fan is a more complicated animal: as a multi-speed fan, it will have more than one possible operating speed, but unlike multi-speed fan, the variable speed fan will take active measures to keep the airflow at the specified level. So, while multi-speed is just multi-speed, variable speed is multi-capacity. See similar questions...

Variable speed fans operate on a simple principle: they are able to spin at different speeds depending on the heating and cooling needs of your home. Usually, they operate at lower speeds, delivering a steady, reliable stream of warm or cool air to your home. This helps control humidity levels, utility costs and system noise. See similar questions...

Many parts require several finishing operations, e.g. scraping and polishing. Generally, scraping is done at low speed to avoid chatter and gouging the part. Polishing is done at higher speeds. Instead of having to switch pulleys or change gears in between operations, with the electronic, infinitely variable speed control you can change speeds with the turn of a knob. See similar questions...

EMS improves the quality of the power supplied to a VFD or VSD. EMS will make these drives last longer. EMS must be installed upstream of the VFD or VSD, or it will have adverse effect on the See similar questions...

Dunno. Maybe it's because when I started getting interested in ss mtb's, you pretty much had to cobble them together youself. Or maybe it's because of Frank Zappa's "Joe's Garage". Could have something to do with "Garage Band" from the Clash. Mebbe it's because in Northern California, all we have is carports and I'm jealous. Might be all those things and more. See similar questions...