How to Calculate the Furnace Tonnage
- Measure the square footage of every room and hallway in your house.
- Add your findings to determine your house’s total square footage.
- Multiple the total square footage by 35 to determine the BTU capacity your furnace needs.
- Divide the result by 12,000 to figure out the tonnage requirement for the furnace.
Does tonnage have anything to do with how much a furnace weights?
Tonnage doesn’t have anything to do with how much a furnace weighs. Tonnage is actually a useful measure of the amount of heat the furnace can put out. To explain more, we’ll have to go into some numbers … The smaller unit of heat measure used in HVAC installation is the BTU, or British Thermal Unit.
How many tons of electricity does a furnace use?
Tonnage varies widely. For example, commercial HVAC systems are often in excess of 50 or even 100 tons of power. Under 25 tons is consider a “light commercial” system. For single-family homes, such as the one you’re probably looking to heat, most furnaces will be between 1 to 5 tons.
How does the furnace sizing calculator work?
The basic principles the furnace sizing calculator is based on are: Larger homes need more BTU than smaller homes (directly proportional to square footage). Homes in colder climates (Region 5) need to generate more heat than holmes in warmer climates (Region 1).
What size Furnace do I need for my home?
(Example 3) Furnace size for a 3,000 square foot home range from 105,000 BTU to 180,000 BTU, depending on the climate zone you’re in. Here is a table with calculated 3,000 sq ft furnace sizes for all 5 regions:
How many ton is 80000 BTU furnace?
It's also run-tested for heating and combination heating/cooling applications. ^^Specifications Depth: 28"Width: 17-1/2"Height: 33-3/8"BTU Input: 80,000BTU Output: 64,000Tons: 2.5 to 4.0^^Ordering There is a minimum order of 1 each for this Goodman gas furnace.
How many tons is a 100 000 BTU furnace?
100000 BTU 92% AFUE 5 Ton Single-Stage Multi-Position 3/4 hp Natural or Propane Furnace.
How do you tell the size of a furnace?
The size of a furnace is based on how much heat it can produce in an hour, as measured in BTUs, or British thermal units. A BTU is the energy required to heat a pound of water by one degree Fahrenheit. The higher the BTU rating a furnace has, the more warmth it can provide.
How do you tell the tonnage of a model number?
Find the model number. Within this string of letters and numerals, you should find an even, two-digit number. The possibilities on residential units range from 18 to 60. Divide the number by 12 (which represents 12,000 Btu/hr, or one ton of cooling capacity) to get your AC unit's tonnage.
How many tons is a 75000 BTU furnace?
75000 BTU 80% AFUE 6.5 Ton Single-Stage Upflow and Horizontal 1 hp Natural or Propane Furnace.
Is it better to undersize or oversize a furnace?
Even a slightly undersized furnace will accomplish the job the majority of the time. Taking things down a few sizes will more than likely solve some of your common heating problems like too high of a utility bill while half of your house is blazing and the other half is an icebox.
How big of a house can a 60000 BTU furnace heat?
A mid-sized home of 2,000 square feet would need approximately 50,000 to 60,000 Btu to heat it properly. With a less efficient furnace operating at 80 percent efficiency this would require a 60,000- to 72,000-Btu furnace.
How many BTU do I need for a 2000 sq ft house?
An average 2,000-square foot home will need between 80,000 and 115,000 BTUs to heat efficiently.
How many BTU do I need for a 1500 square foot house?
between 45,000 to 90,000 BTUsA 1,500-square-foot home will require between 45,000 to 90,000 BTUs. A 1,800-square-foot home will require between 55,000 to 110,000 BTUs. A 2,100-square-foot home will require between 65,000 to 125,000 BTUs.
How do you calculate HVAC tonnage?
To estimate your AC tonnage needs, multiply the number of square feet you're cooling times 25. This equals the total number of BTUs you need to adequately cool your space. Next, divide that number by 12,000 to determine the tonnage capability you need in your new air conditioning unit.
What size is my carrier furnace?
You can determine the size in tons of your Carrier HVAC system by examining the model number on the data sticker at the side of the a/c condenser (outdoor unit). Look for the 7th and 8th digits, or maybe 8th and 9th digits, of the model number.
How big of an air conditioner do I need for a 2000 square foot house?
If your home is 2000 square feet, you can calculate your HVAC needs the same as you would for a 1600 square foot home. Assuming one ton of cooling capacity can cool 400 square feet of your home, you'll need about 5.0 tons of air conditioning capacity. Multiply this by 12,000 BTUs, and you'll get 60,000 BTUs.
How many BTU is a 5 ton furnace?
This Goodman system provides 5 Ton of cooling, 80,000 BTU of heating, and acheives 16 SEER. These features make it a perfect choice for your next system.
How many BTU is a 4 ton furnace?
4 tons is 48,000 BTU: 8 tons = 48,000 x 2, or 96,000 BTU.
How many BTUs is a 5 ton unit?
60,000 BTUBasically, 1 ton equals 12,000 BTU. For example, 48,000 BTU equals 4 tons, and 60,000 BTU equals 5 tons.
How many tons is a 110000 BTU furnace?
4 Tons4 Tons. The AirQuest EAM4X48L21A is rated for up to 4 tons of heating and cooling.
Why Does HVAC Tonnage Matter?
HVAC tonnage is one of the most important calculations in the entire industry. If you install a unit that is too small for the space it’s meant to heat or cool, you likely won’t reach your desired temperatures even with the unit essentially staying on constantly in an effort to keep up with the too-large area.
What Size HVAC Unit Do You Need?
The general rule in the heating and cooling industry is that one ton will heat or cool approximately 400 square feet of space. So, a 2-ton HVAC unit is actually quite small and would be too small for any space under 1,000 square feet. A 1200 square foot home would require no less than a 3-ton unit to heat and cool effectively throughout the house.
What is the meaning of "tonnage" in heating?
Tonnage Is Heating Power. Tonnage doesn’t have anything to do with how much a furnace weighs. Tonnage is actually a useful measure of the amount of heat the furnace can put out. To explain more, we’ll have to go into some numbers ….
What factors are considered when installing a furnace?
The installers consider factors such as the home’s square footage, the volume of rooms, the amount of people who live there, heat from lights, heat coming through windows, and insulation. When they’re done, they’ll know the exact tonnage for your new furnace.
What is the BTU unit used for HVAC?
The smaller unit of heat measure used in HVAC installation is the BTU, or British Thermal Unit. One BTU is the amount of heat necessary to change a pound of water by one degree—adding heat to warm it or removing heat to cool it.
How many BTUs are in a ton?
Since BTUs are such as small amount, tons are used for greater convenience. One ton is equal to 12,000 BTUs. Why is it called a ton? Because it’s the amount of heat necessary to melt one ton of ice.
How much power does a commercial HVAC system use?
For example, commercial HVAC systems are often in excess of 50 or even 100 tons of power. Under 25 tons is consider a “light commercial” system. For single-family homes, such as the one you’re probably looking to heat, most furnaces will be between 1 to 5 tons. This isn’t something you want to guess. Matching the tonnage of a furnace ...
What Is AC Tonnage, And Why Does It Matter?
AC tonnage, ton of air conditioning, or AC tons, is the size of your air conditioner. However, it does not refer to the air conditioner’s physical size but rather its cooling capacity.
What Factors Determine The Size of The AC Unit To Install?
The size, or tonnage, of an AC unit is determined through various factors outlined in the Manual J Calculation (or load calculation). Alternatively, it can be estimated on square footage alone. However, unlike the load calculation, it only provides an approximation.
Why Should You Size New And Replacement Air Conditioners?
Sizing a central air conditioner or heat pump for your home is a critical step in the selection process. If it is too small, your home will never be cooled adequately, it will run constantly, your indoor air quality will suffer, and your electricity bill will skyrocket. On the flip side, an oversized AC unit presents issues too.
What Are The Negative Effects Of An Oversized AC?
Getting an oversized AC unit for your home might sound like a good idea at first. Bigger is better, right? In this case, it is not.
What size of furnace do you need?
Knowing how to determine the furnace BTU size for your home will help you avoid wasting time and money by purchasing a furnace that is not powerful enough, or too powerful and expensive, that you end up returning it to the store for a replacement. Besides, the furnace's installation is quite a complex procedure that we want to get it right the first time.
How does a furnace work?
A furnace is a heating appliance that can either be powered using fuel or electricity to produce heat using a heat exchanger. As the heat exchanger increases in temperature, a blower fan moves the hot air towards the air duct to distribute the heated air around the house.
What is BTU in heating?
BTU, or the British Thermal Unit, is a unit of heat used for an appliance's cooling or heating capacity . One BTU is the heat energy needed to raise the temperature of one pound of water by 1°F. That means the higher the temperature difference we need, the higher BTU our equipment should be. When we consider how much power we need from a cooling or heating appliance, we need to know how much BTUs per hour, or BTU/h, it can provide.
How efficient is a furnace?
Once you've done the above steps, you will then see what size of furnace you need. Like any other appliances that convert electricity to other forms of energy, furnaces also have various efficiency levels. Old furnaces can be as little as 70% efficient, and newer ones can be higher than 90%.
Does heat index affect furnace size?
The location's heat index can also affect our choice of furnace size. A room shaded by surrounding trees most of the time might need a larger furnace than a room that already gets heated by the sun during the day. Keeping all these things in mind can be pretty confusing.
Do you need a furnace in a hot or cool climate?
In a place with a cool climate throughout the year, you will need a much powerful furnace than in a hot place wherein the environment can help heat the room. A larger room would also need a larger size of furnace to accommodate the entire area.
Does a furnace need more BTU?
It takes 1 BTU to increase the temperature of one pound of water by 1°F. Therefore, heating more water, or a larger room area, would then require more BTUs.
How efficient is a furnace?
Example; if your home furnace is rated at 100,000 BTU/h input, and 80,000 BTU/h output, when you divide 80,000 BTU (output) by 100,000 BTU (Input), your result is 0.8 (move the decimal two places to the left) or 80% efficient.
How many tons is a trane unit?
Therefore, simply divide 180 by 12 (12,000 reduced accordingly) to discover this is a 15 ton unit.
What is BTU in model numbers?
Most manufacturers’ model numbers incorporate the BTU equivalent into their unit model numbers, or reference the tonn age. It’s not an exact science, but understanding tonnage designations provides an educated guess when working with unfamiliar model numbers.
How much energy is needed to melt a ton of ice?
Divide 286,000 (amount of energy to melt a ton of ice), by 24 (hours in a day), the result is 11,917 BTU’s of energy per hour to melt the ton of ice.
Do manufacturers include tonnage in their unit number?
Other manufacturers incorporate the tonnage directly into their unit number. However, they usually don’t include the precise tonnage. My thought; because of the 2.5, 7.5 and 12.5 ton units which if expressed with whole numbers would cause confusion. Most all manufacturers when referencing tonnage round up. Example:
Is a heating unit a ton?
Heating units are not measured in tons as A/C units. Heating capacity is referred to in 1000`s of BTU output per hour of operation.