BEST BANG FOR THE BUCK: Mr. Heater F232000 MH9BX Buddy Propane Radiant Heater. My neighbor priced it out and the replicas cost about $1,000 per window. im thinking of installing 3 base board heaters that do 5,600 btu ea. Hot Water Heater Pressure Relief Valve Keeps Opening. . Use the left column to find the distance of your fire feature to the fuel source (distance in feet), Use the top row to find the size of your gas pipe (1/2 1-1/2), Find the approximate number of BTUs available (in thousands), CONSULT WITH A LOCAL GAS PROFESSIONAL TO DETERMINE ACCURATE BTU AVAILABILITY, Use this chart as a guideline ONLY. I burn wood, it smells good! Of course over time it breaks down and rots, it needs to be painted regularly and yet no one manufactures any other sized cladding other than 4 that would make the home more energy efficient and we are not allowed to use 4 cladding like the cement cellulose products that are available and last a long, long time. Many gas stations, grocery stores, and home improvement stores operate bottle swap stations where an empty tank can be exchanged for a full one. Mr. Heater Vent Free Heaters come in radiant or blue flame indoor safe wall-mountable heaters that run off of either propane or natural gas. Therefore, if you continuously run your heater, you'll consume 1/3 gallon of propane per hour. All the places I've worked at least in Maine soft copper is no problem. Now that you understand the importance of volume (BTUs), lets talk pressure. background-color: #333; If youre happy with that heating output, you should get the same-BTU gas fireplace. Hello! I dont like it hot, I prefer to layer and my place is very well insulated. . If you need additional advice, you can give us some insight into how big a home you need to heat and where, and well do our best to help you out with the heating BTU calculation. Given all the different options available for heaters -- space, vented, gas, console, and more -- narrowing down the choices can be a great way to ensure that you are choosing the best option. As long as theyre large enough to heat an entire space, theyre a very convenient option. Hi James, heating to such a higher temp (120F) depends heavily on insulation. air), Latent Heat (BTU/hr) = 0.69 x CFM x gr. In short, no one would bat an eye if you have a 60k furnace in Minessota (1,560 sq ft house, built in 1953 = subpar insulation, to top it off). If you're referring to a pre-assembled, listed flexible connector which comes in lengths up to 6', then the answer is clearly no. Depending on the particular product, some propane heaters do need ventilation while others do not. - One Cubic foot of LP gas - 2516 BTU This chart refers to low-pressure LP, after regulation. All it takes is a bit of know-how and calculation. The specified BTU heating capacity (60,000 BTU for example) is always the output. Vented heaters, on the other hand, are much more invasive. To help you figure out which climate zone you should input into the heating BTU calculator, you can use this map by Office of Energy Efficiency & Renewable Energy: With this information, you can use the Heating BTU Calculator to get a basic idea of how many BTUs you need to heat your home. CFB180, CFBT290, CFBO140). Then how do I calculate which size furnace to buy if it is an 80% efficient furnace? -Alex It is a 3 unit apartment house and I live in one unit and rent the other 2, the total living space is just under 3K square feet. However, if they decide to use a flexible line, most lines are 36 long, so it makes sense to try and keep the gas stub within 36 from the key valve location, Instruct the contractor to keep the gas stub as low as possible to make room for electronic ignition, or in the case that the plate sets fairly low, On some builds, the plate sits only 8 off the ground, For optimal regulation for burners over 250K BTUs, contact a local propane supplier, For regulators 250K BTUs or lower, purchase our, From the tank, propane is HIGH PRESSURE, so it must be regulated down, because the burners are low pressure, For longer gas lines, we often use a high pressure (10psi) regulator at the tank end, and a 2nd stage regulator on the other end of the line to bring the pressure to 11-13wc, A standard 20lb/5 gallon BBQ propane tank can be used for burner systems 180K BTUs and under, Burn time varies from 6-12 hours, depending on how hot you run it, Results may vary, and it is common for the fuel to freeze up with burners 180K BTUs and up. Windows, doors and insulation play a huge role in the final number. Due to BTU loss through exhaust gases, heater runs at approx. The next step is to figure out the cost. NEC 310.16 Table: Copper And Aluminum Wire Ampacity Chart, NEC 310.12 Table: Wire Sizes For 100-400 Amp Services (83% Rule), kWh To Therms Calculator + Conversion Chart (1 kWh = 0.03412 Therms), MMBTU To Therms Calculator + Chart (1 MMBTU = 10 Therms), Therms To MMBTU Calculator + Chart (1 Therm = 1/10 MMBTU), AWG To Circular Mils Chart (For 4/0 AWG To 20 AWG). This unit accepts small 1-pound bottles of propane, though an adapter hose will hook it to a standard-size propane tank. Example: A 60,000 BTU 80% efficient (80 AFUE) furnace will produce 60,000 BTU output. Got that, but is that per hour, day, week, once I get the temp there and just to maintain? A joule is the force it takes to move one newton the distance of one meter. This is the normalpressurethat household naturalgasis delivered. For medium-size spaces, Mr. Heaters F260550 Big Maxx Natural Gas Unit Heater can answer the call. width: 100%; Now, if you use kerosene and would like to estimate your heating costs, heres a way how you can do that: 1 gallon of kerosene contains 131,890 BTUs of energy. natural gas - What size black iron pipe should I use for a 45,000 BTU Even though the standard key valve inlet is 3/4, you may need a larger gas line to span long distances. Get the Dyna-Glo gas garage heater at Amazon, The Home Depot, or Lowes. Natural Gas - Pipe Sizing Calculator - Engineering ToolBox From there, you can figure out how many hours a day, week, or month you might use the heater. I was interested in how much energy I would use if I kept my vacant apartment set at 50 degrees versus 70 degrees. Hope this makes sense now. This chart refers to low-pressure LP, after regulation. ), Its not required that the burner attaches to the plate/pan. I replaced the heating units in each apartment with Rinnai gas heaters that at that time were the most energy efficient. CTS - Copper Tubing Size. This portable garage heaters ventless design means it can be used indoors or out, and the near-100 percent efficiency means it wont waste precious fuel. Proper Line Sizing - Tarantin Industries If you are adding appliances to an existing system and are finding that the line size may be too small, install a 2 PSI regulator with Maxitrol regulators at the appliance. Ive found a Trenton 24,000 BTU/hr, will this be adequate to heat my place. In addition to his professional life, Tom enjoys getting outside on his mountain bike, camping, beekeeping, and fishing. 30,000 BTU Blue Flame Vent Free Heater for use with natural gas Even convection heat warms indoor spaces up to 1,000 sq ft Can be wall mounted or free standing, feet and hardware included State Restriction: CA Example: How many BTU do I need to heat 1,500 square feet? TheCrossfire burnersby Warming Trends are extremely efficient and utilize the BTUs incredibly well. Users can position freestanding heaters anywhere theyd like, allowing them to focus heat generation in a particular area. In general it is common to set. I would run soft copper for propane, flared ends of course. 0000015811 00000 n This says i need about 16,700 btu to heat that size area. Determine the number of appliances you have that use natural gas. There are many methods to mount a plate/pan inside your fire feature. Kerosene cost per gallon can vary quite a bit; lets say $2.00/gallon is the average. margin: 6px 0; It has a variable output switch that allows the user to control the temperature. PDF Gas Pipe Size and BTU Supply Chart - How to Hardscape In general it is common to set. When sizing the gas line make sure you add 5 feet per elbow to the total length. Sadly, this kind of thing happens. Furthermore, we narrowed our search to include the three heating methods: forced air, convection, and radiant. The propane company said they usually just hook up to a 3/4" black pipe on the exterior. You can find this information in the owners manual. Sizing of Low Pressure Pipes vs. Capacity - Sizing low pressure natural gas pipe lines - Metric units. 14 Culprits To Check For Now, MMBTU To MMSCFD Calculator For Natural Gas + Chart, 8 Best Infrared Heaters For Indoors, Patios, Garages (With ECO Thermostats), AGM Battery Voltage Charts: 12V, 24V Deep Cycle Battery Voltage, Lead-Acid Battery Voltage Chart For 6V, 12V, 24V, 48V Batteries, Natural Gas MMSCFD To MMBTU/Day Calculator + Chart. 0000023994 00000 n The main purpose of the plate or pan is to hold in the media (lava rock, glass, etc). Mounted units arent going anywhere, which has benefits and drawbacks. The issue is that the post is using BTU and BTUh interchangeably which they are not. 3 of them should do the trick. The amount of gas used by your gas range is measured in cubic feet per hour (cfh). Get in touch with a professional to determine your pressure at the delivery location. The Bob Vila team distills need-to-know information into project tutorials, maintenance guides, tool 101s, and more. Portable electric heaters are lightweight and usually include carrying handles to supply heat wherever needed, while wall-mounted options are semipermanent and easy to install for continuous heat. air). A pipes expandable pressure is inversely proportional to its thickness-to-diameter ratio. You can use this information alongside a gas piping table to determine the diameter . On top of that, we will solve a few heating BTU examples below, and if you dont find an answer, you can use the comment section and well try to help you out. Tankless water heaters can be a great solution to provide hot water; however, most tankless water heaters have a BTU capacity ranging from 140,000 to 200,000 or more, which makes a tankless water heater one of the largest single appliances on a typical gas system. The three main types of gas garage heaters are forced air, convection, and radiant. For an attached one- or two-car garage, a 30,000-BTU unit is often more than suitable. Realistically, however, when the set temperature is met, the heating output of your furnace will fall to 20-60% and you will see a reduction of this cost. The propane company said they usually just hook up to a 3/4" black pipe on the exterior. The reason for this has to do with several things including pipe size, total service line distance and appliance BTU demand. . However, ventless propane heaters are much easier to install than vented ones. Whether youre passing the colder months with hobbies in your workshop, or your must-do repairs simply cant wait for warmer days, time in the garage is better when youre comfortable. What everybody should bat an eye at is 40k furnace for this house. 0000015398 00000 n 0000011931 00000 n Continuing with our last example, lets say well be running the heater for eight hours a day. Serving Northern Maine HVAC & Controls. .change .bar1 { However, when youre operating your propane heater at full power, you are using the maximum energy that is listed for your particular heater. . Note the energy content of the fuel. For example, lets say you only have 150K BTUs available, but you want to purchase a 180K BTU burner. 0000005158 00000 n Using this formula, you can create an accurate estimate of how much propane gas you need to power your wall-mounted heater. This calculation does not allow for what temperature you are trying to reach. Hi Morgan, warehouses are a different matter. margin-left: 10px; Watch the video, read the charts and make sure your Fire Pit works great! *Free Shipping: Applies to most orders over $99 in the continental U.S. with the following exceptions: **Shipping to Canada:You may be charged additional border fees and taxes when you receive your product. The type of pipe used to transport natural gas is also a factor in determining how much pressure is lost throughout its length. They also use a substantial amount of heat through their ducts, making them less efficient. Apply for a Home Depot Consumer Card. I live in Minnesota and was recently sold a 40,000 BTU 2 Stage 96% eff. Because each appliance uses a certain amount of gas, having multiple instruments can add up quickly. Thank you for your patience as we strive to ship your fire gear as fast as possible. Practically, the best test for how many BTU of heating you need is just to try a heater out. The United States is divided into 7 main climate zones or regions. From there, you can figure out how many hours a day, week, or month you might use the heater. Recessing it to be more shallow can give it a proud look; where all the parts stick up high and make a statement. Talk about cars using energy but no one seems to care much about older homes. Approx what size BTU heater will I need? How Many Square Feet Will 40,000 BTU Heat? (Example), How Many BTU Of Heat Do You Need Per Square Foot? A 30,000 BTU heater requires one gallon of propane for every three hours. 1 Cubic Foot (CF) = approx 1000 BTUs; . This can be a big benefit, particularly when using a smaller heater in a big space. Those numbers can jump considerably if the space is poorly insulated. This makes ventilation more important. Gerri. 0000006023 00000 n Gas Pipe Line Calculation Sizing USING CPC PIPE SIZING TABLE (PROPANE) . If not, youll need to open up a wall and run a duct between the wall joists and ceiling beams. When a small, temporary fix for a large garage or shop wont cut it, check out Mr. Heaters F260560 Big Maxx Natural Gas Unit Heater. (std. Before jumping into the Line Sizing Chart, here is a key for you to refer to in order to translate any abbreviations you do not know: NPS - Nominal Pipe Size. Mr. Heater 30,000 BTU Vent Free Natural Gas Heater, Mr. Heater F232000 MH9BX Buddy Propane Radiant Heater, Mr. Heater F260560 Big Maxx Natural Gas Unit Heater. Is there a chart that will tell us how many BTUS are needed for a 5degree day compared to a 30 degree day in order maintain a set temp of say 70 degrees. padding-left: 5px; 0000036590 00000 n . For example, if you have four appliances and your home is 2000 square feet, you would need a 1/2-inch gas line. It also comes with a propane conversion kit, allowing users to swap it over to propane fuel if thats their preference. For example, a 3/8-inch pipe of 10 feet will exert a water column pressure of 95. A propane heater is a valuable and versatile investment that can heat your house or warm your mobile home or camper. 666,6 sq ft. 500 sq ft. 1000 sq ft. Now you can answer how many square feet will a 5,000 BTU heat. Just not sure if this makes a difference. As you can see below there is a chart for copper tubing size and a chart for iron pipe size with the BTU ratings for the length and diameter of the line. 0000003326 00000 n We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. In some cases, however, its helpful to convert one unit to another for easier comparison. All are efficient, but there are scenarios where one might be better than another. To adequately determine the heat load needed (in BTU or kW), you should consult a local hands-on HVAC expert; they do special Manual J calculations when it comes to warehouses. Smaller garages wont need as much firepower. ----- each size. For everybody who is not an HVAC expert, its important to get a glimpse of how many BTUs per square foot should be used for heating. Our mission is to help everyone find the perfect product, whether it is for home improvement or for electronic gadgets. Water Columnis the term used to measure pressure. The Buddy Propane Radiant Heater from Mr. Heater Buddy has the power to heat a small space, the safety features to run safely, and an affordable price tag. Even infrared heat warms indoor spaces up to 1,000 sq ft. Can be wall mounted or free standing. In fact, the cost to heat a propane-fueled home is much less than a home heated by electric heat. Shop Dyna-Glo 30000-BTU Wall-Mount Indoor Liquid Propane Vent-Free Radiant Heater in the Gas Space Heaters department at Lowe's.com. For natural gas the nominal BTU/ft 3 varies from about 900 to 1100 BTU/ft 3. Together with her husband, she has been spending the last several years lovingly renovating her grandparents former home, making it their own and learning a lot about life along the way. Propane also burns cleanly, but its more readily available by the bottle than natural gas. A 500lb tank would provide roughly 358 hours of burn time. Get the Mr. Heater 30,000 BTU gas garage heater at Appliances Connection, Tractor Supply Co., or Northern Tool+Equipment. A 30,000 BTU heater requires one gallon of propane for every three hours. These kinds of questions are very common when planning your heating needs. Not arguing your point here, but the web page is only giving consumers a rough estimate, which is the best anyone can do on their own before taking your advice to get a more accurate calculation by a service which unfortunately are not always honest. Gas Line Size for a Gas Stove | Hunker reznor model udx gas-fired unit heaters are available in 14 sizes ranging from 30000 to 400000 btuh gas input. If you live near the Canadian border Climate Zone 7 (very cold climate), youll need 90,000 BTU. This calculation is similar to how you would, link to How To Organize A Bathroom Closet. Also, adjust the temperature to keep your home comfortable and your heating bills low. Below is a collection of some of the most commonly asked questions about gas garage heaters along with the answers to clear them up. The following is a list of some of the best products on the market. 0000044897 00000 n Sizing of Low Pressure Pipes vs. Capacity - Sizing low pressure natural gas pipe lines - Metric units. I live in zone 5, my house is 1100 sf. They bring the line to the outside connection, provide the 2 stage regulator, and do a leak test. I think all home should be brought up to some sort of energy standards. He has been involved in the trades for over 15 years as both a contractor and a commercial building mechanic. Now, assume your home has a 300-pound propane tank. The cost to operate a propane wall heater is about $0.80 per hour. A natural gas supply burns cleanly, and an abundant amount is available. To help reduce the risk of accidents, many of the best gas garage heaters have safety features, such as child safety locks that make it difficult for a child to light a heater inadvertently. We store towels, medicine, toiletry supplies, first-aid gear, massage devices, facial steamers, spare Painting your garage is a great way to improve the look of the space and make the walls easier to clean. To convert the BTU input rate into cfh, simply divide the BTUs by 1,000. Not all ceiling-mounted units are large and in charge. With a 30,000 BTU heater, you will need one gallon of propane every three hours. Mr. Heater Big Maxx Natural Gas Garage/Workshop Unit Heater 80,000 My question is do i need 1 heater that will do 16,700 btu per hr. A long run (50 ft. and over) from the propane tank to a house with a total load being over 1,000,000 BTU would most likely benefit from a two stage system because an integral twin stage will not supply the propane . With that being said, there are a number of factors that may alter that number. UTY 30,000 BTU Natural Gas Wall Heater, Propane Heater for Indoor Use - Dual Fuel, Vent-Free, with Free Standing Base Legs, White. Very localized heat, such as above a workbench, might only require 5,000 BTUs. Please add products to your cart and enter your address at checkout to see detailed shipping costs. These home and garden experts then thoroughly research, vet, and recommend products that support homeowners, renters, DIYers, and professionals in their to-do lists. The capacity of Pipe (BTU x 1000) at psiCopper: The capacity of Pipe(BTU x 1000) at psiIron Pipe:Pipe Size(in)Pipe Length(ft.)10Pipe Length(ft.)20Pipe Length(ft.)40Pipe Length(ft.)80Pipe Length(ft.)150Pipe Length(ft.)3001/22351601107555353/44903402301601158019256404403002151451 1/4190013059006204403001 1/22850196013459256604502549037702590178012708702 1/2874060104130284020201390315455106207300502035702450431525216701489010230728050105570303920026940185201318090606923506347043620299802134014665818975013041089630616004384030135. Shopping for the best gas garage heater just got a little easier. You may experience unwanted noise. Multiply the tank size in pounds by the BTUs in one pound of propane, so 21,500 x 300=6,450,000. This guide will help you choose the best gas garage heater for your shop or garage. One megajoule is equal to 1,000,000 joules. Heavier than air, so it sinks down. Flexible Gas Line (24'' Min.) Find out how much natural gas you use daily (in cubic feet). It wont ignite in the air unless the temperature is at least 900 degrees Fahrenheit. hb``a``g```f@@q1- ITd_H2E Dyna-Glo BFSS30LPT-2P 30,000 BTU Liquid Propane Blue Flame Thermostatic Vent Free Wall Heater, White 4.5 (309) $25592$270.56 Now that you understand how much natural gas your appliances are using and how long the pipe must be, you can determine the diameter of your fuel line. Based on Climate Zone, you know how many BTU of heat you need per square foot. link to What Kind Of Paint For Garage Walls. Generates 30,000 BTU/hr, and heats up to 1,000 sq ft. Blue flame technology works by convecting heat to warm the air, similar to a central heating system. Be sure to keep the top shopping considerations in mind while comparing these products. .change .bar2 {opacity: 0;} A 30,000 BTU propane heater does not consume too much energy or propane while in use. Heating BTU Calculator: How Many BTUs Per Square Foot? - LearnMetrics Mr. Heater Vent Free Heaters come in radiant or blue flame indoor safe wall-mountable heaters that run off of either propane or natural gas. height: 5px; Each method has a different kind of heat output in the room that some find more effective than others. Im replacing my pellet stove with a freestanding gas fireplace. Pleasant Hearth 30,000 BTU Dual Fuel Intermediate Vent Free Gas Stove Hello Gerri, BTU-wise it would be best for the replacement freestanding gas fireplace to have about the same BTUs as the pellet stove. On average, it can heat about a 110 sq ft room. All things considered, propane is one of the safer chemicals used for home heating. 1 BTU is enough heat to raise the temperature of 1 pound of water by 1F. Its important to note that some heating methods are not appropriate for small, poorly ventilated spaces, which is why we have both natural gas and propane garage heaters available for specific needs. Is the basement area included? } trailer <]/Prev 90932/XRefStm 1494>> startxref 0 %%EOF 1348 0 obj <>stream Use our free heating BTU calculator! Amazon.com: 30000 Btu Natural Gas Heater *Make sure the BTUs from your line can supply at least 60-70% of what the burner is rated at. 0000001701 00000 n Love goe your map lists places in a Zone 8, most of interior Alaska, but then the calculator, nor the rest of the page, doesnt have data for zone 8, only 7. Keep in mind, the burner sits 3 high from plate to the tip of the jet, Use a jig-saw with metal blade, or a grinder wheel with cutoff, Its 3/16 aluminum and your cut doesnt need to look pretty, Use concrete board to extend the size of the plate, Kit Includes: (1) 36 L x 3/4 Diameter Flex Line + (2) 3/4 Flared Fittings + 3/4 Key Valve + 3 and 12 Key + 1/2 x 2 Nipple, Kit Includes: (2) 36 L x 3/4 Diameter Flex Lines + (4) 3/4 Flared Fittings + 3/4 Key Valve + 3 and 12 Key + (2) 3/4 x 3 Nipple + (2) 3/4 Tee + (1) 3/4 x 1/2 MM Reducer Fitting, If the walls of your fire pit are 6 or thicker, you may need this accessory, Closes the gap from the key valve to the decorative faceplate (escutcheon), Can also be made onsite with hard pipe or sprinkler pipe, 18 square inches on opposing sides (for cross-breeze), To light, turn your fuel valve (most commonly a key valve supplied by us) to a low volume, Use a lighter or match to ignite the flame manually, Gradually turn up the key valve so that the other jets light, Spark rod must be within very close proximity to a jet on the burner, To light, turn the key valve (separate product) to get gas flow going and press button until spark ignites the fuel, Without a mounting bracket, the button most commonly mounts to a metal fire pit, The bracket allows for more mounting options, Should be combined with a Key Valve/Flex line kit, Comes pre-installed under the burner plate for easy drop-in installation, Can be used with any type of electrical switch, timer, remote, or home automation, Turns fire on/off, does not adjust flame height, Great for lighting in damp or windy conditions, Standard Capacity Version: Up to 290K BTUs, Pilot assembly comes pre-mounted to the plate, Only available with burner and plate combo orders or the Venture Series. For example, an L shaped home will have the same heating load as a square shaped home but the square shaped home has 33% more internal sq footage. (Per Hour, Month, Year), How Much Does It Cost To Run An Electric Heater? You will need a more significant line if you use a lot of natural gas daily. Installing mounted units often requires specialized brackets that attach to the ceiling or wall. Were just going to tell you our favorite way to do things because well, it has worked well so far! Well, with pellet stove installed, you pretty much know how well does it heat the space up. air), Sensible Heat (BTU/hr) = 1.1 x CFM x t (std. Most commonly they are rated at 250K BTUs, Using angled couplings can reduce the volume/flow of fuel, Adding a 90 degree angle in your line adds the equivalent of 5 feet of distance, Running different sized lines over various distances is acceptable, but for maximum fuel volume, run larger lines over long distances, Number of appliances, whether its a dedicated line or not; all these factors play a role in volume and pressure, Most commonly the gas stub is positioned underneath the fire feature so that you dont see it, It can be off-center or on-center, depending on the size of your fire feature, You may want to go off-center if youre using electronic ignition, The key valve is generally located on the side of the fire pit, so if it makes sense for your build, place the gas stub off-center to reduce the distance of gas stub to key valve, Most often, the plumber will use hard pipe to connect from the gas stub to the key valve. It is important when installing a gas line that you size it correctly for the application. But, poorly running heaters dont burn as efficiently and can cause unsafe CO buildup. Natural Gas Piping - Sizing vs. Capacity - Sizing natural gas pipes - pressures above 5 psi (35 kPa). Obviously, if you live in colder climate, a 40,000 BTU heater will heat an area below 1,000 sq ft. The goal here is to get a rough estimate; a guestimate at best. (1500 Watt), BTU/h To Horsepower Calculator + BTU/h To HP Chart (To 72,000 BTU/h), Horsepower To BTU/Min: Convert HP To BTU Per Minute (Calc + Chart), HP To BTU/hr: Horsepower To BTU For A/C (Calculator + Chart). The one thing about these old houses that you need to keep in mind is that the raw wood started out life as a 44 and after over 100 plus years is now about a 33 or less so that limits heat gain. The Big Maxx requires 8 feet of clearance under it, so it comes with the necessary brackets for mounting to the ceiling. As the calculations have shown, your family and the HVAC guy is in the right here. As the host of beloved and groundbreaking TV series, including This Old House and Bob Vilas Home Again, he popularized and became synonymous with do it yourself home improvement. Mr Heater 30000 BTU Vent Free Blue Flame Propane Gas Wall or Floor Indoor Heater with Thermostat for Spaces up to 750 Square Feet, (2 Pack) 16 Mr. Heater, Corporation Mr. Heater, 30,000 BTU Vent Free Blue Flame Propane Heater, MHVFB30LPT (Bundle) 104 $29999 FREE delivery Feb 15 - 17 SunStar Natural Gas Heater Infrared Ceramic, 30000 Btu $49760