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HVAC Metrics And Calculators

Convert PSI To MPa: PSI To Megapascal Calculator + Chart

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In many cases when working with pressure, you will have to convert PSI to MPa. Here we will learn how to convert PSI to MPa (MPa are much bigger units). To help everybody out, we have designed simple-to-use PSI to MPa calculator (insert PSI, get MPa)ย and included the PSI to MPa conversion chart for 0.1 … Read more

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Convert hPa To PSI: Hectopascal To PSI Calculator + Chart

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hPa to PSI is a less common conversion of pressure units. We will learn how to convert hPa (hectopascals) to PSI units. To help you out, we have also created a hPa to PSI calculator (insert hPa, get PSI) and included a conversion chart ranging from 0.01 hPa to 10,000 hPa. Here is what we … Read more

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Convert GPa To PSI: Giga Pascals To PSI Calculator + Conversion Chart

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Compared to Pa and even PSI, GPa is a really big unit of pressure. We will show you how to convert GPa to PSI (gigapascals to pounds per square inch). You can do it manually, or use our GPa to PSI calculator (insert GPa, get PSI) and GPa to PSI conversion chart with 0.0001 GPa … Read more

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Convert kPa To PSI: Kilo Pascals To PSI Calculator + Conversion Chart

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kPa and PSI are quite comparable units of pressure. We will look into how you can easily convert kPa to PSI. Specifically, you can use our kPA to PSI calculator (insert kPa, get PSI) and conversion chart with the conversion of kPa to PSI ranging from 0.001 kPa to 1,000,000 kPa. First of all, let’s … Read more

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Convert MPa To PSI: Mega Pascal To PSI Calculator + Conversion Chart

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When using pressure units, we usually use either MPa or PSI. That is because Pa (Pascal) is a very small unit compared to PSI. To help everybody convert MPa to PSI, we have designed a simple-to-use MPa to PSI calculator (insert MPA, get PSI) as well as a conversion chart with 0.01 MPa to 100,000 … Read more

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Convert PSI To Pa: PSI To Pascal Calculator + Conversion Chart

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PSI is a much bigger unit of pressure than Pascal. In many cases, we will have to convert PSI to Pa. To help everybody out, we have designed a very simple-to-use PSI to Pa calculator (insert PSI, get PA) and included a conversion chart with as little as 0.0001 PSI to 1000000 PSI converted to … Read more

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Convert Pa To PSI: Pascal To PSI Calculator + Conversion Chart

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Pascals and PSI are both units of pressure. We are going to show you how you can convert Pa to PSI. For easier conversion, you will find both Pa to PSI calculator (insert Pa, get PSI) as well as a chart with 1 Pa to 10,000,000,000 Pa converted to PSI. Let’s look at what Pa … Read more

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Convert HSPF To COP: Calculating COP From HSPF Rating (Heat Pumps)

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The energy efficiency of heat pumps is expressed in COP (Coefficient Of Performance). On the heat pump’s specs sheets and EnergyGuide labels, however, you will only see HSPF (Heating Seasonal Performance Factor). Because HSPF directly depends on COP, we can easily convert HSPF to COP. Below, you will find these two very useful resources if … Read more

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HSPF5 Vs HSPF4: Why 2 Heat Pump Efficiencies On Specs Sheets?

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If you open heat pump specs sheets, you will see the HSPF5 rating and HSPF4 rating. Obviously, we want to know what is the heat pump HSPF rating – denoting the heating energy efficiency – but this HSPF5 vs HSPF4 rating might give us a pause. Let’s explain what both HSPF5 and HSPF4 ratings are … Read more

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How Many Watts In A 12 Volt Battery? (Calculator + Chart)

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A lot of people have asked us to determine how many watts are in a 12-volt battery. 12-volt battery wattage is very simple to solve, and we will show you how. On top of that, you can use: ‘How Many Watts In A 12V Battery’ Calculator found below. Basically, you just insert the battery capacity … Read more

Categories HVAC Metrics And Calculators 4 Comments
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Relevant HVAC Certificates:

energy efficiency guide

HVAC metrics:

SEER = (1 ร— EER100% + 42 ร— EER75% + 45 ร— EER50% + 12 ร— 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 ฮ”h (std. air)

Sensible Heat (BTU/hr) = 1.1 x CFM x ฮ”t (std. air)

Latent Heat (BTU/hr) = 0.69 x CFM x ฮ”gr. (std. air)

1 HP = 746 Watts

1 kW = 3413 BTU

 

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