How to calculate a heat pump balance point
Find the outdoor temperature where heat pump output meets building heat loss, using a load line, capacity at temperature, and a worked crossing.
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Mukarram Haroon
Mukarram Haroon founded HVAC Bench and edits its technical reference library, including the engineering guides published under this byline.
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- Role
- Founder and editor
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- 30
About
Mukarram Haroon founded HVAC Bench and oversees what the site publishes, including the engineering guides in this section. Technical claims still trace back to the manufacturer documentation and published standards named on each page, the same discipline the rest of the site holds to.
How pages are researched and checked is set out in the editorial policy, and the sourcing rules are in sources and methodology.
Recent pages
How to choose HVAC design temperatures
Why load calculations use annual percentile temperatures rather than record extremes, what each percentile costs in hours of exceedance, and when to move one.
Open the referenceHow to size for sensible and latent cooling load
How to split a cooling load into its sensible and latent parts, read a coil's sensible heat ratio, and avoid oversizing the part that removes moisture.
Open the referenceHow to calculate duct friction rate
How to derive a duct system's design friction rate from equipment static pressure and total effective length, with a worked example and the errors that undersize a system.
Open the referenceHow to size a geothermal ground loop
The inputs that set vertical bore length for a closed-loop ground source heat pump, why soil thermal conductivity has to be measured, and what a rule of thumb per ton leaves out.
Open the referenceHow to calculate VRF piping capacity derate
How equivalent piping length and vertical separation reduce VRF system capacity, why altitude derating is separate, and where selection software gets the inputs.
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