3 calculators in this category
- Hydronic GPM Flow Rate CalculatorSensible heat rate equation, ASHRAE Handbook—FundamentalsEnter a heating or cooling load and the temperature drop you are designing around, and this calculator returns the flow the…
- Radiant Floor Loop Length CalculatorASHRAE Standard 55 floor-temperature limit; manufacturer loop-length tablesGive this calculator a zone area, a tube spacing and the zone's heat loss, and it returns the total PEX you need to buy, how…
- Boiler Size (BTU) CalculatorI=B=R ratings (Hydronics Institute); AHRI BTS-2000Boilers carry three different capacity numbers and they can differ by 40%. This calculator works through all of them in the…
Which one do you need?
- Hydronic GPM Flow Rate Calculator
- Calculate required hydronic flow in GPM from load and design temperature drop, with glycol correction. See flow per MBH and the delta-T at any flow you have.
- Radiant Floor Loop Length Calculator
- Work out PEX tubing length, number of loops, length per loop and flow per loop for a radiant floor zone from area, tube spacing, heat loss and design delta-T.
- Boiler Size (BTU) Calculator
- Size a hot water or steam boiler from heat loss and domestic hot water demand, with the I=B=R pickup factor and the input rating your efficiency needs.