Understanding HVAC Pump Ratings
One of the critical parts of your HVAC system is its pump. Though called heat pumps, they also control humidity and air conditioning. Heat pumps move heat and hence use less energy compared with central air conditioners and furnaces.
Your selection of a good heat pump is crucial. There are various ratings you will come across when shopping your one from a pump supplier. These ratings affect the efficiency and energy use of your heat pump. Here is an expert guide for understanding these ratings.
Energy Efficiency Ratio (EER)
EER refers to a measure of your HVAC’s efficiency at a specific level. A high EER rating means that your unit uses less energy to generate the same cooling output. The seasonal energy efficiency ratio measures the cooling efficiency of your system over a whole season and not a single temperature.
The current minimum SEER rating is 14, and each increase in this indicates that the pump uses 10 % less energy to cool your interiors.
Heating Season Performance Ratio (HSPF)
The HSPF rating of your pump measures the power consumption of your heat pump over a whole season. An HSPF rating of 1, for instance, means your system generates one watt of heat for every watt of energy it consumes.
The current minimum HSPF rating differs depending on the type of heat pump you buy. Air source heat pumps have a minimum rating of 8.2, while geothermal heat pumps have a rating of 10.
This rating, like HSPF, measures your system’s power consumption. Unlike HSPF however, it measures this efficiency at single outside temperatures. The current COP minimum rating is 3.1–4.1.
Apart from relying on ratings, ensure you get an adequately sized heat pump. An oversized or undersized heat pump will increase your energy costs and lead to uncomfortable interiors. It is advisable to get an HVAC pump expert to advise you on the ideal size and rating for your home or office.