## Radiant Tube Heater Size Calculator

Square Footage | Approximate BTU Size |
---|---|

100 sq ft | 2,500 – 4,000 BTUs |

250 sq ft | 6,250 – 10,000 BTUs |

500 sq ft | 12,500 – 20,000 BTUs |

750 sq ft | 18,750 – 30,000 BTUs |

1,000 sq ft | 25,000 – 40,000 BTUs |

1,500 sq ft | 37,500 – 60,000 BTUs |

2,000 sq ft | 50,000 – 80,000 BTUs |

## FAQs

**How do you size a radiant tube heater?** Sizing a radiant tube heater depends on factors like the room’s insulation, desired temperature rise, and climate. A rough estimation is around 25-30 BTU per square foot for residential spaces and 30-40 BTU per square foot for commercial spaces.

**How many BTU tube heater do I need?** For a 1,000 square foot space, you might need around 25,000-30,000 BTUs.

**How many tube heaters do I need?** One tube heater may be sufficient for small spaces, but for larger areas, you may need multiple units spaced evenly to ensure even heating.

**How many BTU per square foot for radiant heat?** Approximately 25-40 BTU per square foot depending on factors like insulation and climate.

**How much radiant heat tubing do I need?** Estimate about 1.5 to 2 linear feet of tubing per square foot of space.

**How many square feet will a 1500 watt radiant heater heat?** A 1500 watt heater can generally heat a room of around 150-200 square feet.

**Do tube heaters cost a lot to run?** Tube heaters can be cost-effective due to their efficiency, but running costs depend on factors like energy prices and usage patterns.

**What size BTU heater do I need for 1000 sq ft?** For a 1,000 square foot area, you might need approximately 25,000-30,000 BTUs.

**How long will a 15000 BTU heater run on a 20 lb tank?** A 15,000 BTU heater can run for roughly 10-15 hours on a 20 lb propane tank.

**Can you leave a tubular heater on all the time?** It’s generally safe to leave tube heaters on continuously, but consider energy efficiency and safety precautions.

**Where is the best place to put a tube heater?** Mount tube heaters near the ceiling and parallel to the primary heat loss areas, ensuring even heat distribution.

**What is the life expectancy of a radiant tube heater?** Radiant tube heaters can last 20-30 years with proper maintenance.

**How many square feet will 100,000 BTU heat?** Around 2,500-4,000 square feet, depending on insulation and climate.

**How many BTU do I need to heat 1500 square feet?** For 1,500 square feet, estimate 37,500-60,000 BTUs.

**How do I calculate BTU for hydronic heating?** Calculate the BTU needed by multiplying the space’s square footage by the desired temperature rise (in degrees Fahrenheit) and then dividing by the heat loss factor for your area.

**How far apart should radiant tubing be?** Spacing between radiant tubing typically ranges from 6 to 12 inches, depending on the tubing size and heat requirements.

**What is the best tubing for radiant heat?** PEX (cross-linked polyethylene) tubing is commonly used for radiant heat systems due to its flexibility and durability.

**How to determine the correct tube size and spacing for your project?** Consult with a professional to perform a heat loss calculation and design a system that meets your specific needs.

**What size heater for 1500 sq ft?** For 1,500 square feet, consider a heater in the range of 37,500-60,000 BTUs.

**How many watts per square foot for radiant heat?** Estimate about 10-15 watts per square foot for radiant heating.

**How efficient are radiant tube heaters?** Radiant tube heaters are efficient because they directly heat objects and people, reducing heat loss compared to forced-air systems.

**Will a tube heater heat a room?** Yes, tube heaters are designed to heat rooms efficiently.

**Is underground heating worth it?** Underfloor heating can be worth it for comfort and energy savings, especially in well-insulated homes.

**How many square feet can a 12,000 BTU heater heat?** A 12,000 BTU heater can heat roughly 300-500 square feet.

**How many square feet will a 20,000 BTU heater heat?** A 20,000 BTU heater can heat approximately 500-800 square feet.

**How many square feet will a 150,000 BTU heater heat?** A 150,000 BTU heater can heat around 3,750-6,000 square feet.

**How long will a Mr. heater 30,000 BTU run on a 20 lb tank?** A 30,000 BTU Mr. heater can run for about 10-15 hours on a 20 lb propane tank.

**How long will a 20 lb propane tank last on a 30,000 BTU heater?** A 20 lb propane tank can last roughly 10-15 hours with a 30,000 BTU heater.

**How long will a 20 lb propane tank last on a 50,000 BTU heater?** A 20 lb propane tank can last approximately 6-10 hours with a 50,000 BTU heater.

**What is the surface temperature of a tubular heater?** Surface temperatures of tubular heaters vary but typically stay within safe operating ranges.

**What are the benefits of tubular heaters?** Tubular heaters offer efficient and localized heating, making them suitable for various applications.

**Can you mount a tube heater vertically?** Yes, tube heaters can be mounted vertically or horizontally depending on the design and manufacturer’s guidelines.

**Do tube heaters need to be vented?** Venting requirements depend on the specific type of tube heater, but many do not require venting.

**How safe are tube heaters?** Tube heaters are generally safe when installed and operated according to manufacturer instructions.

**How well do tube heaters work?** Tube heaters work well for targeted heating, offering efficiency and comfort.

**Can you leave a radiant heater on 24/7?** Leaving a radiant heater on continuously is generally safe but consider energy costs and safety precautions.

**What is the difference between radiant heat and tube heaters?** Radiant heat refers to the method of heating, while tube heaters are a specific type of radiant heater that uses tubes to distribute heat.

**What are the cons of radiant heaters?** Radiant heaters can be more expensive to install upfront compared to forced-air systems.

**How many square feet will 400,000 BTU heat?** Around 10,000-16,000 square feet, depending on insulation and climate.

**How many square feet can 80,000 BTU heat?** Approximately 2,000-3,200 square feet, depending on insulation and climate.

**Is 8,000 BTU too much for 150 square feet?** Yes, 8,000 BTUs would likely be excessive for a 150 square foot space.

**How many BTU do I need for 2,000 square feet?** For 2,000 square feet, estimate 50,000-80,000 BTUs.

**How many BTUs do I need for 1,200 square feet?** For 1,200 square feet, estimate 30,000-48,000 BTUs.

**What size boiler do I need for 2,000 square feet?** The boiler size depends on factors like insulation and desired temperature rise, but it’s typically in the range of 50,000-80,000 BTUs.

**How do you size radiant heat?** Sizing radiant heat involves calculating the heat loss of the space and determining the appropriate heat source capacity.

**What is the rule of thumb for BTU?** A common rule of thumb is to estimate 20-30 BTUs per square foot for residential heating.

**Do you use 1/2 or 3/4 PEX for radiant heat?** 3/4-inch PEX is often used for radiant heat systems, but 1/2-inch can work for smaller projects.

**What size PEX tubing should I use for radiant heat?** 3/4-inch PEX tubing is commonly used for radiant heat installations.

**Can you use PEX pipe for radiant heat?** Yes, PEX is a popular choice for radiant heat tubing.

**Can you use regular PEX for radiant heat?** Regular PEX can be used for radiant heat if it’s designed for such applications.

**How do you layout radiant tubing?** Radiant tubing should be evenly spaced and installed in a serpentine or spiral pattern to ensure even heat distribution.

**How do I know what size tube I need?** Consult with a professional to determine the appropriate tube size based on your heating requirements.

**How many zones do I need for radiant heat?** The number of zones in a radiant heat system depends on the size and layout of your space.

**How do I choose a tubing size?** Select the tubing size based on the heat load and design of your radiant heat system.

**How many square feet can a 1,500 watt heater heat?** A 1,500 watt heater can typically heat a room of around 150-200 square feet.

**How many square feet will a 50,000 BTU heater heat?** A 50,000 BTU heater can heat approximately 1,250-2,000 square feet.

**How many square feet can a 1,500 watt heater heat?** A 1,500 watt heater can heat about 150-200 square feet.

**How many square feet will 100,000 BTU heat?** Around 2,500-4,000 square feet, depending on insulation and climate.

**How many square feet will 30,000 BTU cover?** Approximately 750-1,200 square feet, depending on insulation and climate.

**How many BTU do I need to heat 800 square feet?** For 800 square feet, estimate 20,000-32,000 BTUs.

**How many watts does it take to heat 1,000 square feet?** Approximately 10,000-15,000 watts for electric heating.

**How many watts does it take to heat 250 square feet?** Around 2,500-3,750 watts for electric heating.

**Does radiant heat use a lot of electricity?** Radiant heat can be energy-efficient, but it depends on the heating source and usage patterns.

**What are the disadvantages of underground heating?** Disadvantages can include higher installation costs and limited control over heating zones.

**What are the pitfalls of underfloor heating?** Pitfalls can include the potential for uneven heating if not installed correctly and higher upfront costs.

**Are radiant tube heaters more efficient than forced air?** Radiant tube heaters are often more efficient because they directly heat objects and people, reducing heat loss.

**How efficient are radiant tube heaters?** Radiant tube heaters are generally highly efficient due to their direct heating method.

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