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Heating

Heating Cost Per Square Foot Calculator ($0.00049836 Average)

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How much does heating costs per square foot? If you know the average heating cost per square foot, you can calculate the total heating cost for your house. Of course, the exact heating costs per sq foot depending on several factors. The two most important ones are: Heating needs. In the US, you would need … Read more

Categories Heating Leave a comment

How Does A Heat Pump Work? Step-By-Step Heating, Cooling Explained

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How do heat pumps work? All heat pumps have the same basic principle of operation. Air-source heat pumps use outdoor air as a heat sink, geothermal heat pumps use the ground as a heat sink. Here we will, in the simplest terms, answer this key question: “What is a heat pump and how does it … Read more

Categories Cooling, Heating 1 Comment

How Much Gas Does A Pilot Light Use? (Per Hour, Day, Month, Year)

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Electronic ignition systems have replaced pilot lights for one simple reason: Pilot lights are expensive to run. Running pilot light 24/7 can result in 5,000+ cubic feet of natural gas or 50+ gallons of propane being used every year. How much gas does a pilot light use? Quite a lot, actually. According to Wikipedia, “In … Read more

Categories Heating Leave a comment

Furnace VS Heat Pump: Which Is Better? (14 Differences + Cost Calculators)

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Furnace or heat pump? Which one is better? Some people might have furnaces and heat pumps confused; thinking they might even be the same thing. That’s wrong; heat pumps and furnaces are vastly different. We will look at all the 14 key differences between furnaces and heat pumps. You will find a table of these … Read more

Categories Heating 2 Comments

How Long Does A Propane Tank Last On A Patio Heater? (7.57-37.86h)

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If you have a patio heater, it’s probably powered by propane. 20 lb propane tanks are the most common ones; some outdoor patio heaters can also have 30 lb tanks. We will calculate how long does a propane tank last on a patio heater. To properly estimate how many hours will a 20 lb propane … Read more

Categories Heating 2 Comments

How Long Will A 20 lb Propane Tank Last At 50,000 BTU? (6.31h to 8.41h)

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A 20 lb propane tank is used for all sorts of propane-powered heaters. This includes patio heaters, generators, propane grills, and so on. Something like a propane heater can produce 50,000 BTU of heating output. Based on the propane BTU content, we can calculate how long will a 20 lb propane tank last at 50,000 … Read more

Categories Heating 1 Comment

What Temperature Should I Set My Thermostat In The Winter? (72°F?)

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Not too cold, not too hot. That is the perfect winter thermostat temperature setting. However, if you want to save some money on the heating bill you really want to figure out what temperature should you set a thermostat in winter. Is the perfect winter thermostat setting 68°F, 70°F, 72°F, 74°F or 76°F? Here’s the … Read more

Categories Heating Leave a comment

Heating BTU Calculator: How Many BTUs Of Heat Per Sq Ft?

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Question: How many BTUs do I need to heat 1,500 sq ft? How many square feet will 30,000 BTU heat? Example: To heat 1,500 sq ft home, you will need anywhere between 45,000 BTU and 90,000 BTU. These kinds of questions are very common when planning your heating needs. Adequately estimating how many BTUs you … Read more

Categories Heating 16 Comments

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HVAC metrics:

SEER = (1 × EER100% + 42 × EER75% + 45 × EER50% + 12 × EER25%)/100

EER = BTUcooling/W

HSPF = BTUheating/W

COP = Q (useful heat)/W (input work)

ACH = CFM x 60/Area x Heightceiling

Total Heat (BTU/hr.) = 4.5 x CFM x Δh (std. air)

Sensible Heat (BTU/hr) = 1.1 x CFM x Δt (std. air)

Latent Heat (BTU/hr) = 0.69 x CFM x Δgr. (std. air)

1 HP = 746 Watts

1 kW = 3413 BTU

 

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