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Heating

Average Gas Bill For 1-Bedroom Apartment: State-By-State Cost Analysis

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Gas for a 1-bedroom apartment shouldn’t cost all that much. We wanted to take a look at what is the typical gas bill for a 1-bedroom apartment. To calculate that as accurately as possible, we used the last released RECS data to estimate the average gas bill for a 1-bedroom apartment (US average, and state-by-state … Read more

Categories Heating Leave a comment

How Many Therms Of Gas Per Month Is Normal? (1000-3000+ Sq Ft Homes)

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December 2022 was brutal. The temperatures fell even below 0°F in places like New York and Chicago. That’s why people on forums started exchanging how many therms of gas per month they used. Needless to say, record high 200+ therms per month for 2000 sq ft 1960s houses were unusually common. That’s why we looked … Read more

Categories Heating, Power Consumption 5 Comments

Thermostat Says Heat On But No Heat? 14 Culprits To Check For Now

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thermostat heat on mode but no heat

“My thermostat says heat on but no heat. What’s the problem? How to get the heat back on?” This is one of the most frustrating thermostat issues in the winter. You do everything right; set the heat “ON” on the thermostat but no heat comes from the furnace. We will look into all 14 common … Read more

Categories Heating, Wiring Leave a comment

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 9 Comments

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 5 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. “Is 72 a good temperature for heat in the winter?” is a question that we get quite a lot. If you want to save some money on the heating bill you really want to figure out what temperature should you set … Read more

Categories Heating Leave a comment
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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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