The Goodman GSZ13 is a relatively inexpensive and inefficient heat pump, with a single compressor. It earns energy efficiency ratings of 13 SEER (cooling) and 7.8 HSPF (heating).
The heating and cooling capacity for this model both range from 18,000 to 60,000 BTU/h (i.e. from 1.5 to 5 tons). Sound output ranges from 71 to 76 dB.
This model uses R-410A refrigerant (a.k.a. Puron). It thus compares favorably to the GSH13 (a Goodman model with similar efficiency), which uses R-22 (a type of refrigerant known for damaging the Earth’s ozone layer).
Goodman’s manual for the GSZ13 provides detailed information about the unit’s performance at different temperatures, so you can assess its likely operation in your climate.
I truly believe this is an above average pump, I haven't had any complaints whatsoever with it. The only negative thing I can think of was the price, which I wasn't entirely satisfied with (I ended up purchasing this particular model because there was a retail center selling Goodman nearby, which reduced the cost of transport and installation marginally). I've had the GSZ130301 for about 10 months now. It runs relatively quiet (I attribute that to its having been brand new and well-maintained ever since). I don't see any spots of rust or chipping / fading paint (this is essential, since Colorado sees extremes of both temperature and weather events – as well as a heck of a lot of snow). Overall, I'd certainly buy it again, but only at a much reduced price. I figure I could have saved about $100 if I'd gone with another, equally reputable brand, but was stuck with this one due to my company's remote location.
"Feel the Burn….For a Few Minutes"
I currently am renting a home from my in-laws. The house has quite a few issues, but some are worse than others. One of the lesser issues is the heating system. The house has a central heat system made by Goodman. It has been in the house for a few years. It works OK, the ducts put out lukewarm air on most days. It has to feel pretty cool outside in order for it to feel like there is significant heat coming out. Upstairs, the air is just not warm. The unit might do better on a smaller home, even though the company said it should be fine on a 4-5 bedroom house. I wouldn't recommend it to a friend.
"Amazing heat pump for the price!"
I have owned this heat pump for about two years now. For the price there is absolutely nothing better that you can get. It has worked perfectly during this time, requiring no repairs and very little maintenance, giving me exactly what I need while not driving up energy costs to astronomical proportions. I like to keep my house nice and toasty during those cold winds in the South this winter, and this does it with absolutely no problems. When I got this unit, I was replacing an older unit that drove my bills up during the winter months. I saw a drastic increase in my bill, which will pay for the unit itself in a short amount of time for me. As long as this unit continues performing like this for a few years to come, I will definitely be purchasing another model from Goodman to replace this when its eventual time comes to an end.
"Very poor equipment"
I bought two units in September of 2010. Within three months the coil on the downstairs unit had a leak. Now, as of July of 2015, the upstairs unit had to have the same coil replaced. And within a week of that the downstairs unit now has a problem as well. Might be the coil again. That would be three coils in about five years. From what I have read on this sight this seems to be pretty standard and Goodman is doing nothing about improving the facilities that make their parts. I feel Goodman should reimburse us for at least half of the installation charges when the problem is a recurring one. They make rather crappy stuff and do not care that the repair places charge thousands of dollars for service. The parts are rather inexpensive so Goodman doesn't (apparently) mind replacing them. It is the service charges that bankrupt us.
Roger J. Nunes
Purchased a renovated foreclosed home with a brand new Goodman heat pump and air handler. I learned the unit was installed in October 2014 and I purchased my home in March 2015. During that time the house was unoccupied because it was for sale. Goodman will extend the warranty from 5 years to 10 if you register within 60 days installation. Even though my situation is identical to a new home sale Goodman refused my extension two times. Their customer service is pathetically poor.
Reviewers on hvac-talk.com are dismissive of the GSZ13. They don�t like Goodman generally, and consider the GSZ13 to be overly inefficient and error-prone. They also suggest that the initially low cost will be overwhelmed by necessary maintenance. In general, they prefer Trane and other brands. (They remind consumers that Goodman and Amana are now the same company.)
Users at gardenweb.com seem to hold similar opinions, suggesting that consumers could pay a little more for their heat pump and get substantially better results.
Folks at doityourself.com are harsh in their reviews of the GSZ13 and anyone willing to install it, suggesting that these units are more trouble than they were worth. These reviewers generally prefer Lennox and Trane.
Goodman GSZ13 Model Numbers
The GSZ13 is available in different models which vary in efficiency and capacity.
SEER / HSPF
BTUs per Hour
13 / 8
13 / 8
13 / 8
13 / 8.4
This model has a 10-year limited parts warranty. It's only good for the original owner and at the original location. It does not cover damage due to bad installation, human intervention or natural disasters. If a part is broken, you can send it back to Goodman and they'll send you a new one (although you will pay for shipping).
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