Welcome back to our series on common terms in the HVAC industry! Last week, we discussed the meaning and importance of SEER ratings. We mentioned that an air conditioner’s SEER rating is especially important for naturally hot climates like Arizona, New Mexico, and Texas. But if you live in a mild climate like states in the Northwest, you should know the meaning of an equally-important HVAC term: the “Heating Season Performance Factor,” otherwise known as a unit’s HSPF rating.
When it comes to weather, places like Western Oregon and Western Washington tend to sit right in the middle of things. This area’s periods of hot summer weather are less intense and usually won’t last as long as the Southwest’s, where air conditioning may even be needed year-round. And unlike the Midwest, whose winters last longer and are very cold, Northwest winters are relatively mild. This makes the Northwest an ideal location to install and utilize heat pumps, which perform heating and cooling operations within a single unit depending upon the demands of the weather.
That being said, cooler weather is definitely more prevalent in this area, which makes the HSPF rating potentially more important to consider than the unit’s SEER rating when shopping for a heat pump system. After all, if you expect your heat pump to be warming your home far more often than you expect it to be cooling your home, its HSPF rating could make a greater difference on your utility bills than the unit’s SEER rating.
HSPF is also more important than SEER in the Northwest if you plan on claiming tax credits for purchasing and installing a heat pump system in your home. Oregon’s residential energy tax credit applications for both ductless and traditional air-source heat pumps both currently require the system in question to have a minimum HSPF rating of at least 9.0. In contrast, neither of the applications have a minimum SEER requirement. In an area where summer seems to speed by in the blink of an eye, it’s easy to see why focusing on maximizing your system’s heating efficiency would lead to bigger energy savings.
For those who can’t or aren’t interested in claiming tax credits after purchasing a heat pump system, it’s still a good idea to take a look at the system’s HSPF ratings to anticipate how much energy it will use during heating season. Keep in mind that the lowest HSPF rating available on the market is 7.7, but that trusted HVAC sources like energyvanguard.com recommend buying a heat pump with an HSPF rating of 8.0 or higher if you anticipate your system operating in heating mode the majority of the time.
And of course, just like a professionally, properly installed air conditioner will typically perform truer to its advertized SEER rating, your heat pump is more likely to live up to its advertized HSPF rating if it’s installed by a trained and licensed mechanical contractor like Home Comfort. We’ll help you choose and install the perfect heat pump system for your home.
Energyvanguard.com, “Know Your Terms – Heat Pump Efficiency Ratings SEER & HSPF”Works Cited
www.oregon.gov, “Heat Pump Systems”
www.oregon.gov, “2013 Residential Energy Tax Credit Rates”