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Correctly Sizing A Heat Pump

Sizing a heat pump can be a disaster for many beginners and experts alike. This guide will help to make sure you get it right.

TeddyPNeal10
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Correctly Sizing A Heat Pump

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  1. THE MOST IMPORTANT THING? NOT THE BRAND! IT’S THE SIZE! •  The most common mistake that we see are heat pumps The most common mistake that we see are heat pumps that grossly oversized for the space. that grossly oversized for the space. •  Larger heat pumps are more expensive (shocking right) Larger heat pumps are more expensive (shocking right) •  So the question becomes – how do we size a heat pump So the question becomes – how do we size a heat pump correctly? correctly?

  2. CORRECTLY SIZING A HEAT PUMP •  Heat pumps are available in sizes starting at 1.5 Heat pumps are available in sizes starting at 1.5 tonnes 5 5 tonnes tonnes. Moving up in half . Moving up in half tonne •  1 1 Tonne Tonne = 12,000 BTU = 12,000 BTU •  LoadCalc.net LoadCalc.net is a handy tool that will allow you to perform is a handy tool that will allow you to perform the calculation prior to the contractor. the calculation prior to the contractor. •  If a contractor refuses to do proper load calculations, find a If a contractor refuses to do proper load calculations, find a new contractor new contractor tonnes to to tonne increments increments

  3. WHY ARE HEAT PUMPS CONSISTENTLY OVERSIZED? •  The larger the heat pump the more expensive it is = more $$$$. The larger the heat pump the more expensive it is = more $$$$. I’m sure occasionally this is a problem, but more likely? I’m sure occasionally this is a problem, but more likely? •  Designing for extreme temperatures versus design temperatures. Designing for extreme temperatures versus design temperatures. •  The final reason – margin of error. Contractors sometimes err on The final reason – margin of error. Contractors sometimes err on the side of too large versus too small. They are working with the side of too large versus too small. They are working with numbers which don’t always translate to real life numbers which don’t always translate to real life

  4. THE ISSUE WITH OVERSIZED HEAT PUMPS •  The larger the heat pump the bigger the price tag. The The larger the heat pump the bigger the price tag. The difference isn’t HUGE but it’s still $300-$500 out of your difference isn’t HUGE but it’s still $300-$500 out of your pocket that would otherwise still be there! pocket that would otherwise still be there! •  Short Cycling. This is essentially when a heat pump is Short Cycling. This is essentially when a heat pump is constantly starting and stopping. It creates humidity issues constantly starting and stopping. It creates humidity issues which create comfort issues. Humid homes aren’t which create comfort issues. Humid homes aren’t comfortable, the purposes of a heat pump is to improve the comfortable, the purposes of a heat pump is to improve the level of comfort! level of comfort!

  5. THANK YOU! For more information please visit For more information please visit heatpumptalks.com heatpumptalks.com

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