Selling to the HVAC industry is definitely one of my passions
Difficulty: Moderately Easy Instructions
Things You'll Require:
Calculator
1 Turn off power to the HVAC unit. This is located on the side regarding the unit plus yous generally a regular switch. Switch it to the "off" place.
2 Open the door of the HVAC unit. Sometimes they lift off; other times you'll want to require a screwdriver, loosen upwards a few screws, and then pull the door off.
3 Take your flashlight also look by the unit tag. This is usually a sticker and can be found either on the inside of the unit or on the again of the door you took away. It will include all the data about the HVAC unit. See reference 1 for a picture of a sample HVAC unit tag.
4 Locate where the tag express "BTU input." This is how numerous BTUs the unit utilizes also remains how HVAC units are sized. However, the BTU input remains not the similar as the BTU yield. BTU yield is equally important because it's the way several BTUs go into heating the residence. The difference among BTU input and BTU output is determined out of the efficiency of your HVAC unit.
5 Calculate the BTU output. To create this, determine the efficiency of your HVAC unit. This should also be stated somewhere on the tag or elsewhere on the unit. If it isn't, rough estimating is easy. If your unit vents to the chimney for a metal pipe, it's roughly 80 percent productive. If it practices only or two PVC pipes also vents to the exterior regarding your home, it's roughly 90 percent efficient. Multiply the BTU input by the efficiency of your unit to get your BTU output. (e.g. Your BTU input is labeled seeing that 75,000 BTU. Your HVAC unit is 80 percent efficient. 75,000 times 0.80 equals 60,000 BTU. This would be your BTU yield.)
6 Replace your HVAC unit's cover and turn the power to the unit again on.
Tips & Warnings
Some units may maintain the BTU output listed on the apparatus tag. This is not common although will save you a bit about math if it is listed.
You want to figure out the BTU output because when any BTU necessity remains figured out for any building, the BTU yield is the final number that is established. Next, depending on the unit's effectiveness that you are purchasing, you need to transform to BTU input to purchase the unit. (e.g. Your building wishes 85,000 BTU to heat it. You want a 90 percent efficient unit. You acquire 85,000 and divide it by 90 percent. You conclusion awake along with 94,444 BTU. This amount remains the BTU input you are looking for. You'll probably need to round up to 100,000 and purchase a 100,000 BTU HVAC unit.)
Always turn the strength away to the HVAC unit before taking the cover off. Parts of the unit have 120 volts about electricity that is is live at all times, even when the unit isn't operating.
