1. The first one is from Natural Gas Energy Equivalent.The second one is from British And American. WebWith our smart calculator you can easily convert between the two weight units thmand BTU. WebJust insert the BTUs in the equation, and you can calculate the number of cubic feet of natural gas that contains 200,000 BTU of heat content like this: Cubic Feet (200,000 BTU) = 200,000 BTU / 1037 = 192.86 Cubic Feet Of Natural Gas. Please read AddThis Privacy for more information. Solve Now. The grams to cups calculator converts between cups and grams. BTUs/hr; Gas Fireplace (trendy) 25,000 35,000 BTUs/hr; Generator (standby). The natural gasoline equipment calculator is an estimate fee of home equipment. The BTU per square foot heating rule of thumb varies widely based on your climate and the size of the house or space you want to heat. This calculator can only gauge rough estimates. Multiply that by 100,000 to get the price per hour youll pay to run the furnace: about 87 cents. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Whether you want to measure the volume of the gas, or the heat and energy produced, we have it all for you. WebGas calculator - equation. Natural gas has roughly 1,050 BTUs per cubic foot (0.028 cubic meters). A 3-year-old home inside a newly developed community most likely deserves a good rating. Break down the home into rectangles. Natural gas contains 36,303 BTUs per cubic meter (35.3 cubic feet). It really helps other visitors to estimate the cost of a new HVAC unit. Calculator + Chart (Natural Gas), Average Gas Bill For 1-Bedroom Apartment: State-By-State Cost Analysis, Average Electricity Bill For 4 Person Household (Survey Analysis), How Many kWh Per Day Is Normal? Perhaps the windows have been replaced, but youre unsure of their quality. WebGas calculator - equation Cost to operate = usage (hours or load) x (BTUs/100,000) x price per therm OR Cost to Operate = usage (hours or load) x therms x price per therm Conversion table 1 BTU = 0.293 watt hours 100,000 BTU = 1 therm 3,413 BTU = 1 kilowatt hour Common BTU ratings Boilers: 100,000 - 200,000 BTUs/hr* These are quick answers. Your house was built in 2005 with a good insulation. We have prepared a natural gas unit chart just for you. A furnace or space heater that is too small wont adequately heat your home on the coldest winter days. 1 Cubic Foot (CF) = approx 1000 BTUs; 1 CFH = 1 MBH; The specific gravity of natural gas varies from 0.55 to 1.0. How is natural gas usage calculated? These brief instructions give details for providing accurate inputs into the sizing calculator. >Use the Pick HVAC Gas Furnace Sizing Calculator for most accurate results. Webnatural gas M3* natural gas MCF* steam pounds ton-hour gasoline gallons diesel gallons propane gallon kerosene gallons fuel oil #2 gallon fuel oil #6 gallon coal tons wood cord *The fuel content of the volume of natural gas can vary. 1 MJ/m3 = 26.83 BTU/SCF (British thermal unit / cubic foot) The heat content of natural gas might be different in various countries. It is approximately the energy needed to heat one pound of water by 1 degree Fahrenheit. We assumed 102,000 Btu/CCF in our calculations. Decide mathematic question. To find the desired change in temperature to input into the calculator, find the difference between the unaltered outdoor temperature and the desired temperature. If one MCF costs $9.00: Divide the price per MCF by 1,028,000 to get the price per BTU: $0.00000875486. Why does this matter? SG = particular gravity of herbal gasoline For herbal gasoline the nominal BTU/cf varies from approximately 900 to 1100 BTU/cf. If you need to convert normal cubic meter of natural gas to another compatible unit, please pick the >Use this Furnace Sizing Tableto check your results compared with the most common results. W2 Wire Thermostat Wiring (2nd Stage), Thermostat Wire Color Codes For 3-8 Wire Thermostats (Color-By-Color), How Many Therms Of Gas Per Month Is Normal? Manufacturers list their furnaces by input how many BTUs of heat does this furnace create? Propane, C 3 H 8. WebThis Natural Gas conversion calculator is a unit conversion tool dedicated to the units used in measuring natural gas. A simple rectangle is easiest. Free time to spend with your family and friends. Choose your length and size from the drop down menus below. 200,000 BTU is equal to 192.86 CF of natural gas. WebIn warmer climates, multiply this number by 10 - 15. The British Thermal Unit, or BTU, is an energy unit. How many square feet will 30,000 BTU heat? (State-By-State Chart), How To Convert Therms To kWh? How many BTU are you piping into the house? Natural gas contains 36,303 BTUs per cubic meter (35.3 cubic feet). Web1 Cubic Foot of Natural Gas: 1000 BTU IT: 1 British Thermal Unit (International Table): Most common use of term BTU in everyday language. The Greenhouse Gas Equivalencies Calculator uses the eGRID U.S. national annual average CO 2 Therms and Mcf of natural gas. How is natural gas usage calculated? Our goal is to help you determine the right size furnace/heater for your heating requirements. Computing BTUH: Technical Note: You can calculate your gas-fired equipments BTUs per hour of gas usage. 3. You should choose Average Sun Exposure and Zone 5 based on the Climate Zone Map and Sun Exposure Map. The basic unit to measure it is cubic feet, but there are many other units that help us measure the volume and energy produced. Here is the full CFM to BTU conversion chart for natural gas: As you can see, this chart illustrates well how many BTU you get from CFH of natural gas. The downstream pressure in a houseline after the meter/regulator is in general in the range of 7 to 11 inches Water Column, or about 1/4 psi. On average, this represents WebBtu to cfh conversion natural gas calculator. For natural gas the nominal BTU/cf varies from about 900 to 1100 BTU/cf. Lets say the main body is 47 x 32, as in the example above. Further on, you will also find calculated conversion charts for CFH to BTU for both fuels: Here you just insert the CFH of natural gas, and the calculator will automatically convert that volumetric flow to BTUs: Here is how you can use this calculator to convert cubic feet of natural gas per hour to BTU: Lets say that your home meter reads 85 CFH. You can get more accurate answers thourgh our BTU heating calculator. Jan 2023 Heating Costs Update: Due to unprecedented recent increase in cost of all heating fuel types, average cost of Natural Gas has increased by as much as $0.50 per Therm, Heating Oil is around $5/gallon & Propane has gone up by $0.90/gallon. In more moderate climates, multiply by 20 - 30. Propane BTU Calculator: How Much Propane Does a Heater Use? You can choose between 20 different popular kitchen ingredients or directly type in the product density. 2. Decreasing efficiency over the life of the heater or air conditioner. For example, 600 CFH of natural gas is equal to 622,200 BTU. *The fuel content of the volume of natural gas can vary. In general it is common to set. If you already bought a specific size furnace and want to know the square footage it can heat, this furnace sizing by btu to square footage Table can give you all common answers : The aboved table is also calculated based on the 96 AFUE. Sun Exposure: Climate and the trees around your home factor into this box. Standard Boilers? On average, this represents It can be difficult to tell. 9 British Thermal Units to Cubic Feet Of Natural Gas = 0.009. Homes in more extreme climates are subject to larger fluctuations in temperature, which typically results in higher BTU usage. WebCFH to BTU Calculator for natural gas, accompanied by a Natural Gas CFH To BTU Chart converting flows from 1 CFH to 1000 CFH to BTUs (1037 BTU to 1,037,000 263+ PhD Experts 3 Years in business Energy Conversion Calculator. Generator Size (kW) Natural gas has roughly 1,050 BTUs per cubic foot (0.028 cubic meters). If you need to convert standard cubic foot of natural gas to another compatible unit, please pick the Youre here for the bottom line what size furnace (gas, propane or oil) do I need. This chart is based on low pressure natural gas (14" W.C.) with a dynamic pressure drop of no more than .30" W.C. in thousands. In order to estimate your generator size requirement, please enter the square footage of your home, then select which appliances you would like to run during a power outage. DC Wire Gauge Calculator: What Gauge Wire (12V, 24V, 48V)? If you already bought a specific size space heater or furnace and want to know the square footage it can heat, here are the quick answers: For example, a 30,000 BTU space heater will heat 1,000 square feet in Florida, which is in hot climate. Check out 185 similar conversion calculators. To convert 1 cu ft nat gas to BTU use direct conversion formula below. A BTU describes the energy content or heat value of fuels. 95% furnace:95% of heat is transferred, and 5% is lost. Deal with math equations. It was developed by the International Code Council / International Energy Conservation Code and adopted by the US Department of Energys Office of Energy Efficiency & Renewable Energy. Note Input: 60,000 120,000 BTU/h If you look at the PDF document, you see that there are four models 60,000, 80,000, 100,000 and 120,000 BTUs Input. Its generally better to go slightly bigger rather than a little too small. How to use it? Math equations can be difficult to deal with, but with practice, they can become easier. Energy required to raise the temperature of 1lb of water by 1F. BTUH = BTUs per hour . Add the sections for a total of 2,000. *The fuel content of the volume of natural gas can vary. Contact us at 877-847-0050 or email sales@TotalHomeSupply.com Total Home Supply Download PDF of Natural Gas Fuel Consumption Chart. 96 cubic feet (ft3) of natural gas is equal to 2.688 cubic meters (m3) of natural gas. As a general rule of thumb, a temperature between 70 and 80F is a comfortable temperature for most people. How Many Furnace Btu Per Square Foot Do I Need? The maximum allowable BTU/Hr will be visible where the two lines intersect. Math equations can be difficult to deal with, but with practice, they can become easier. WebBTU (Natural Gas) = CFH Of Natural Gas 1037 BTU (Propane) = CFH Of Propane 2517 As we can see, to calculate BTU from the CFH of natural gas, we have to multiply CFHs by 1037. If one MCF costs $9.00: Divide the price per MCF by 1,028,000 to get the price per BTU: $0.00000875486. Cooling Btu Calculator: How Many Btu Cooling Do I Need? Convert emissions or energy data into concrete terms you can understand such as the annual CO 2 emissions of cars, households, and power plants.. Multiply that by 100,000 to get the price per hour youll pay to run the furnace: about 87 cents. Free time to spend with your family and friends. Heating Annual Cost Calculator: Oil vs Gas vs Propane vs Electric 2023, Propane VS Electric Heat Calculator (Running Cost & Savings Comparison), kW To BTU Converter Calculator: How Many BTU in a kW. Try to place the air conditioner condenser on the shadiest side of the house (typically north or east). WebHow to calculate the BTU capacity of LP or natural gas fired equipment, heaters, or appliances. For example, in Hungary, the heat value of natural gas has an average of 34.12 MJ/M3. Energy Conversion Calculator. And in cold climates multiply the square foot number by 30 - 40. Conversion table. In general it is common to set. Sometimes there is no indication in the furnaces model name; other times the information is right there. Natural Gas - Pipe Sizing Calculator - Calculate capacities and dimensions of natural gas pipe lines. For example, if the cost for natural gas is $17.50 per 1,000 cubic feet, then divide by 10 and enter 1.75 as the price per therm. Typical values are in the range 0.6 - 0.7. This is straightforward. 800 British Thermal Units to Cubic Feet Of Natural Gas = 0.8. Cookies are only used in the browser to improve user experience. AddThis use cookies for handling links to social media. Shortly: it shows how much energy (in megajoule) is released while combusting 1 cubic meter of natural gas. 9 British Thermal Units to Cubic Feet Of Natural Gas = 0.009. BTU stands for British Thermal Units. The calculation is instantaneous. The deeper the color, the more sunny the climate. %. It is approximately the energy needed to heat one pound of water by 1 degree Fahrenheit. The quick answer is60,000-80,000 BTUsbased on different climate zones. For instance, if you are converting a rate of 500,000 BTUs per hour: 500,000 100,000 = 5 Thirdly, if you have a furnace salesperson in to give you a quote, youll be able to knowledgeably discuss furnace sizing with them, so you will feel in charge of the process rather than wondering what they are talking about! Since the energy in natural gas is equivalent to the gas's volume, you can freely convert between BTUs per hour and cubic feet per minute (CFM). WebHeating BTU Calculator Room Dimensions (in feet) Length: Width: Ceiling Height: Insulation: Lowest Outside Temperature: Btu/Hr Required: Vent Free Heaters Vented Heaters Gas Unit Heaters Not sure which unit is right for you? Average 1-6 Person Home kWh Usage, Gas Vs Electric Water Heater Monthly Cost Comparison (State-By-State), Water Heating Costs For 1,2,3,4,5,6 Family Homes (State-By-State Analysis), Electric Water Heating Cost, kWh Usage Per Month (State-By-State RECS Analysis), What Is W2 Wire On Thermostat? explains how BTUs apply to air conditioners and, to some extent, heat pumps. The image below shows how much attic insulation your home should have. The BTU content in solid fuel on the other hand can vary widely. Measure the length x width of each. 1 cu ft nat gas = 995.33571001887 BTU. Natural Gas - Pipe Sizing Calculator - Calculate capacities and dimensions of natural gas pipe lines. The capacity of a 100 ft natural gas pipe with a nominal diameter 0.5 inches (actual ID 0.622 in) and 0.5 inches WC pressure drop can be calculated as, k = [((0.622 in))5/(1 + 3.6 / (0.622 in) + 0.03 (0.622 in))]1/2, q = 3550 0.117 ((0.5 in) / ((100 ft) 0.60) )1/2. WebThis page features online conversion from standard cubic foot of natural gas to British Thermal Unit.These units belong to different measurement systems. Webenergy content in natural gas 1000 Btu/ft 3 (37.26 MJ/m 3) steel pipes schedule 40; For natural gas the nominal BTU/ft 3 varies from about 900 to 1100 BTU/ft 3. Poor:Your home is older, and its a little drafty around windows and doors. OK, weve taken the time to input data for common home sizes, climates, etc. This will NEVER affect our opinion of a product or service! Furnaces rarely run for an hour straight, but thats how they are rated. If you still dont know how to figure btu for furnace, just leave a comment below. as the decimal separator. 10 British Thermal Units to Cubic Feet Of Natural Gas = 0.01. Remember that Output is the essential number once you have determined how many BTUs furnace you need. Home Size: Enter the square footage of your home. WebSG = specific gravity of natural gas. Generally, newer homes have better insulating ability than older homes due to technological advances as well as stricter building codes. 2. It is an exact measurement that can be applied to most heating equipment. And there is an addition or extension that is 25 x 20, or 500 square feet. 600 British Thermal Units to Cubic Feet Of Natural Gas = 0.6. The first one is from Natural Gas Energy Equivalent.The second one is from British And American. For instance, heating a home in Alaska during winter, or cooling a home during a Houston summer will require more BTUs than heating or cooling a home in Honolulu, where temperatures tend to stay around 80F year-round. - free apps for offline use on mobile devices. Thermostats placed in dead spots can inaccurately manage the temperatures of homes. If needed use the dot "." WebFuels like oil and natural gas can have minor differences in their BTU content but it's a negligible amount. Use the Pick HVAC Gas Furnace Sizing Calculator, and when you get estimates from furnace contractors in your area, youll have a very clear understanding of what to expect. Cubic meters or m3 is the unit of measuring the volume of natural gas. In general it is common to set. WebNatural Gas Unit Conversion Calculator. To get this number in units of BTU, you would multiply it by 1000000, which would give you a total of 35300 BTU in an m 3 of gas. Plus, we give you an estimated furnace sizebecause manufacturers produce furnaces in increments of 10,000 to 20,000 BTU. NOTE: Gas consumption data is merely for estimating purposes. We assumed 102,000 Btu/CCF in our calculations. WebOne cubic foot (0.028 cubic meters) of natural gas contains about 1,050 BTUs or 1,037 BTUs (US EIA) One cubic meter (35.3 cubic feet) of natural gas contains about 36,303 BTUs How many BTUs are in a gallon of LP gas or propane? Following that, we do the math for readers that prefer a quick, accurate answer to what size furnace do I need?. Use the content above to get the most accurate gas furnace sizing calculator available anywhere. The second half of that sentence is a mouthful wood-burning combi boilers heat water but that hot water doesnt flow directly into your hot water pipes. Multiply that by 100,000 to get the price per hour youll pay to run the furnace: about 87 cents. WebIn warmer climates, multiply this number by 10 - 15. How Many BTU Do Furnaces Make? WebIf the price for natural gas is based on $ per 1,000 cubic feet, divide that number by 10 to enter above. WebConvert 1 Cubic Foot Of Natural Gas to BTU (cu ft nat gas to BTU) with our conversion calculator and conversion tables. Webnatural gas M3* natural gas MCF* steam pounds ton-hour gasoline gallons diesel gallons propane gallon kerosene gallons fuel oil #2 gallon fuel oil #6 gallon coal tons wood cord *The fuel content of the volume of natural gas can vary. Just slider the slider to 175 and you get the result: 175 CFH of propane is equal to 440,475 BTU. It is now code, so if your home doesnt have it, vapor barrier/wrap will have to be installed the next time you replace the siding. Many air heating applications use steam or hot water coils to heat the air. Sample Name: All values should be entered as mole %, unless otherwise noted. Make sure only one gas appliance is on and keep an eye on the gas meter to see how long it takes to utilize one cubic foot of gas. Since the energy in natural gas is equivalent to the gas's volume, you can freely convert between BTUs per hour and cubic feet per minute (CFM). Should I Replace 80 Furnace with An More Efficient 95 Furnace? Home Size: Enter the square footage of your home. Typical values are in the range 0.6 - 0.7. %. For exact measurements, you have two options that will work well enough. WebFUEL QUALITY CALCULATOR. WebWith our smart calculator you can easily convert between the two weight units thmand BTU. Average:The home was built between about 1990 and 2010, and not much has been done to it. For example, if youre trying to heat 1000 square feet in a cold climate, 30,000 - 40,000 BTUs will add significant warm air to your home. 1 BTU = 0.293 watt hours; 100,000 BTU = 1 therm; 3,413 BTU = 1 kilowatt hour; Common BTU ratings. If you dont know it, the information might be found on a blueprint or house drawing, in closing Furnace Input/Output:This is a confusing topic that weve alluded to in the content above. Make sure only one gas appliance is on and keep an eye on the gas meter to see how long it takes to utilize one cubic foot of gas. When deciding on the proper input for the "insulation condition" field in the calculator, use generalized assumptions. PICKHVAC Terms of Use: Some of the products seen on our site are delivered through a relationship with outside suppliers like Networx.com, Google, and others. 1 Tankless Water Heater Breaker Size Calculator: What Size Breaker? Homeowners tend to think in terms of output how many BTUs do I need for a warm house on the coldest day of winter? For most consumers in Canada, theres a natural gas meter on the outside Lets start with this very useful map. Solve Now. 80% furnace:80% of the heat is transferred into ductwork while 20% is wasted out the exhaust vent. Calculate heating BTU needed in four easy steps. Rene has worked 10 years in the HVAC field and now is the Senior Comfort Specialist for PICKHVAC. Now you may convert between the units in a jiffy without relying on tools. WebNatural gas conversion calculator cubic feet Btu megajoules cubic meters 1 cubic foot = 1,039 Btu ( based on U.S. average for natural gas delivered to consumers in 2021, preliminary) Crude oil conversion calculator barrels Btu megajoules liters 1 barrel = 42 U.S. gallons = 5,691,000 Btu ( based on U.S. production in 2021, preliminary) WebBtu to cfh conversion natural gas calculator. Home Size: Enter the square footage of your home. WebBTU (Natural Gas) = CFH Of Natural Gas 1037 BTU (Propane) = CFH Of Propane 2517 As we can see, to calculate BTU from the CFH of natural gas, we have to multiply CFHs by 1037. WebHeating BTU Calculator Room Dimensions (in feet) Length: Width: Ceiling Height: Insulation: Lowest Outside Temperature: Btu/Hr Required: Vent Free Heaters Vented Heaters Gas Unit Heaters Not sure which unit is right for you? Multiply each components percentage by its heating value to find the total heating value of the natural gas sample. Energy Conversion Calculator. Tankless Water Heater Wire Size Calculator: What Gauge Wire (AWG)? WebThe calculator provides indicative conversion of gas consumption in cubic metres to kilowatt-hours and other units. The Greenhouse Gas Equivalencies calculator allows you to convert emissions or energy data to the equivalent amount of carbon dioxide (CO 2) emissions from using that New Furnace Replacement and Installation Cost, Adequately heated in even the most extreme cold, Sized to not waste energy or equipment costs by buying a furnace that is too big. 1. 600 British Thermal Units to Cubic Feet Of Natural Gas = 0.6. Windows normally have poorer thermal resistance than walls. Thats pretty straightforward. 1 ft 0.028 m, 1 m 35.315 ft. The best way to think about this factor is for us to describe each option: First, the home was built after 2010, and youre sure it has a wrap like Tyvek or similar. The most common sizes are from about 70,000 to 120,000 BTU/h. If youre living in New York, a 75,000 BTU furnace would only heat a 1,500 sq ft home. Carbon dioxide emissions per therm are determined by converting million British thermal units (mmbtu) to therms, then multiplying the carbon coefficient times the fraction oxidized times the ratio of the WebOne cubic foot (0.028 cubic meters) of natural gas contains about 1,050 BTUs or 1,037 BTUs (US EIA) One cubic meter (35.3 cubic feet) of natural gas contains about 36,303 BTUs How many BTUs are in a gallon of LP gas or propane? The amount of energy that is needed to either cool or heat one pound of liquid water one degree Fahrenheit at It is approximately the energy needed to heat one pound of water by 1 degree Fahrenheit. Not only will placing it in a shadier area result in greater efficiency, but it will extend the life of the equipment. It is a unit to measure the heat energy produced by fuels, in WebThe British Thermal Unit, or BTU, is an energy unit. You also can convert 1 Cubic Foot Of Natural Gas to other energy units. Turn on more accessible mode. ** Enter the price of electricity in dollars. BTU is often used as a point of reference for comparing different fuels. Using our rounded safe number of 1000 BTU per cubic foot on natural gas the required flow rate for this new unit heater would be 1000 CFH (100,000 1000) Heating Air with Natural Gas . Cost of electricity has gone up by $0.02 $0.13 per kWh. Natural gas is one of the most widely used fuels worldwide, and has many units of measurement based on what we're using it for. If it is unheated, then dont. Here is the promised propane CFM to BTU conversion chart: You can just read off the chart how many BTU will certain flow (CFH) of propane generate at 100% efficiency. Use the content above to get the most accurate gas furnace sizing calculator available anywhere. PickHVAC is also a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. WebNatural Gas Unit Conversion Calculator. Natural Gas - Pipe Sizing Calculator - Calculate capacities and dimensions of natural gas pipe lines. How Many Square Feet Will 4,000 80,000 BTU Heat? Its also called vapor barrier. Slide the slider to 85 and you get the result automatically: 85 CFM of natural gas is equal to 88,145 BTU. If its a two-story with that footprint, double the calculation to 3,000 square feet. How Much Does 500 Watts Cost Per Hour? Use our calculator for the most accurate results the kind of results youd get by spending $300+ for a Manual J Load Test administered in your home by a licensed HVAC technician. wood cord. Divide the energy transfer rate in BTUs per hour by 100,000, which is the number of BTUs in a therm. Approximately 1.05505585262 x 10 3 Ethane,C 2 H 6. 2. And in cold climates multiply the square foot number by 30 - 40. To convert 1 cu ft nat gas to BTU use direct conversion formula below. You might also want to consider this question: How much sun does your climate get? WebGas calculator - equation. If your 3,000 square foot home in Nebraska needs 225,000 BTUs of heat to keep it warm, you might need to divide the space up and use a 140,000 BTU furnace for the main 2,000 square feet of the house and a second 90,000 BTU furnace for the bedroom wing, upper floor or other section of the home. This Table is designed for homeowners unsure about whether they got it right.. BTUH = BTUs per hour . WebThe British Thermal Unit, or BTU, is an energy unit. Because you want to know how much heat gets into your ductwork. In more moderate climates, multiply by 20 - 30. Calculating square feet:If you are unsure of your homes square footage, you can locate it on a blueprint/house drawing or in closing documents. See local cost of 30,000 BTU Heating Unit. If you dont know it, the information might be found on a blueprint or house drawing, in closing The amount of energy that is needed to either cool or heat one pound of liquid water one degree Fahrenheit at The answer is in the documents, often a PDF file that lists Input and Output in separate columns. Computing BTUH: Technical Note: You can calculate your gas-fired equipments BTUs per hour of gas usage. 1 ft 1,037 Btu. BTU stands for British Thermal Units. We have also prepared a natural gas unit chart just for your convenience, alongside which we will be talking about various units to measure natural gas. The conversion factor between cubic feet and cubic meters is: The conversion between the BTU and ft is based on: The steps to convert from ft3 to BTU are: BTU stands for British Thermal Units. We don't save this data. There are no mid-80% AFUEfurnaces. The capacity of a low pressure natural gas (less than 1 psi, 6.9 kPa) pipe line with a small pressure loss can be calculated with the Spitzglass formula, For natural gas the nominal BTU/cf varies from about 900 to 1100 BTU/cf. The BTU content in solid fuel on the other hand can vary widely. To help you out we have created two useful resources for this: The energy density (BTUs per CFH) for natural gas and propane are not the same; hence 2 calculators and 2 charts. What size furnace do I need for a 1,000 square foot home? If your goal is an efficient furnace that cuts energy costs, and youre used to wearing an extra layer in winter, use Zone 4 for your calculation.
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