Carrier 25HNA Infinity Heat Pumps

Carrier 25HNA Infinity Heat Pump Overview

The Carrier 25HNA Infinity heat pump series is available in one- or two-stage units. As a two-stage unit, operation mostly occurs in the lower stage for cost savings. The Infinity heat pump series is designed to partner with the Infinity series furnace enabling the utilization of hybrid heat. Carrier's hybrid heat involves a duel-fuel system in which the system optimizes the efficiencies of fuel sources by switching between electricity and gas. With up to 19 SEER and a 9.5 HSPF heating efficiency, the Carrier 25HNA Infinity series has earned the Energy Star rating.

To minimize noise production during operation while maintaining maximum air flow, the Infinity series employs the Silencer System II, which includes forward swept fan blades among other noise reduction features. The unit produces 69 dB during operation, which is about as loud as the average vacuum cleaner.

The 25HNA utilizes the Infinity Control System for temperature programming and enhanced diagnostics for easy repair. The unit is manufactured with a steel louver coil guard and is made of heavy-gauge galvanized steel for weather protection and durability. The exterior is coated with a baked-on powder coat paint.

Questions about this model?

Consumer Reviews of Carrier 25HNA Infinity


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #4 of 9 Carrier Heat Pump
  • 14.29% of customers recommended

Read Reviews of Other Carrier Products

Find ratings and reviews for Carrier Air Conditioners, Boilers and more

Read Reviews

Top 10 Heat Pumps

See who made our list of the best Heat Pumps of 2022.

See the Top Products

Find a Certified Heating & Cooling Professional In Your Area

Contact a top-rated local expert to help with all of your home's HVAC needs.

Carrier 25HNA Infinity Heat Pump Reviews

Showing 11-15 of 28 reviews


1.0 rating
Very Unsatisfied

I had 2 units installed in 2006. Both units needed new control boards and OAT sensors this year. They were not under warranty, according to Carrier. What crap! Furthermore, I had to get the blower fan in the furnace changed last year on one of them and the other this year; again, not under warranty! My older Yorks worked fine for 15 years plus. I changed them under the advice of my contractor; yes, they are apparently higher efficiency but compromised by early failure. The next failure, I will change back to York! Very disappointing! I hope this helps somebody out there!

G. Rossi

Montreal, Canada

"Not flawless but not as bad as everyone is saying"

4.0 rating
Somewhat Satisfied

I have a 4 ton unit and a 3 ton unit that were installed in 2006. We run them hard. I have the heat strips locked out until 15 degrees. Without heat strips, at 0 degrees, we run about 68 degrees in the house at night, not bad for a heat pump. I am not an HVAC tech but I am technical minded. I set the compressors to reverse in the defrost mode using the quiet mode. I think this reduces stress on the compressors because they are no longer screaming when they reverse. I had the control board go out on one of the outside units and it should be under warranty, but you can find used boards fairly cheap. I did a little board swapping and isolated the failing board. It was $100 for a used board. The programmability is great. I was able to add a Honeywell steam humidifier myself and the Infinity thermostat controls it and considers the outside temp so the windows don't sweat. I really like the feature that locks out the 'high" mode for reducing energy use. I like being able to see the outside temperature and easily display what is happening at the moment (compressor, fan, humidifier operational status) Knowing the static pressure is nice, too. Keep in mind that these new systems have lots of bells and whistles so you cannot compare them to units sold 20 years ago. Electronics outdoors are going to get abused. My 16 SEER 3 ton has always made a loud noise in the winter that seems to be something to do with the flow of Purion. It starts loud and then gets quieter. No one could figure it out but it is manageable.

M. Dayton

Richmond, VA

"Absolutely sucks"

1.0 rating
Very Unsatisfied

We had a Carrier unit installed in our home to replace the old Trane unit and it had lasted about 15 years. We have had nothing but trouble out of our Carrier and we have had even worse luck getting a service tech to my house to work on it. I am very unsatisfied with the sales and service of the whole thing.

gary lee

Butler, AL

"Don't buy a Carrier — Carrier does not stand by its product."

1.0 rating
Very Unsatisfied

We purchased an Infinity system in 2008. The compressor died in November, 2014. The company wants plenty to repair it. The installer gets to keep the profit they made, and so does Carrier. However, we will need to pay additional costs if we want to keep the heat pump. This company has known about the default with the Bristol compressor for quite some time. Clearly, they hope that it does not break until the warranty period is further along, then the cost to replace is less for Carrier and higher for the consumer. Do not buy this product. It is faulty, and the company is very unethical about how they deal with the consumer.


Lacey, WA

"Carrier heat pump 25HNH536 with FE4ANF002"

2.0 rating
Somewhat Unsatisfied

The unit is very quiet when running. It is sturdy and beautiful. However, the outside unit and the fan coil fe4anf002 produce significant humming noise at all times, nonstop, when not operating. The unit is only 9 months old. When I told the dealer about the humming noise, he checked it and changed the fan coil transformer, but that did not solve the problem. The humming of the inside unit is very noticeable at night, even with the furnace room door closed.

Papa I Kebe

Indianapolis, IN

Other 25HNA Infinity Reviews

Comments on other internet review forums are mixed regarding the Infinity series and Carrier products in general. Some sites consider infinity heat pumps to be very reliable and of high quality. However, there are numerous complaints on that include issues ranging from costly defects with the Infinity�s compressor to difficulty with assistance provided by Carrier customer service.

Carrier 25HNA Infinity Model Numbers

The 25HNA Infinity is available in different models which vary in efficiency and capacity.

Model Number SEER / HSPF BTUs per Hour
25HNA924A31 19 / 9.2 0
25HNA936A30 18.2 / 9.5 0
25HNA948A30 16.8 / 9.3 0

25HNA Infinity Warranty

With proper and timely product registration, the Carrier 25HNA heat pump series has a 10-year parts limited warranty. Labor costs are not covered by the warranty. If the product is not registered within 90 days, the coverage is reduced to 5 years, although optional extended warranties are available.

HVAC Brands

Learn more about your home's heating and cooling system with our guides, how-to's, FAQ's, tips and more.

Ready to get a quote from an HVAC contractor?

Let us know what type of service you need and we can connect you with a certified local HVAC contractor.

Please enter a valid name

Please enter a valid phone number

Please enter a valid zip code

There are no dealers in this zip code.

Please enter a valid email address

Please select repair or replace

Please select heating, cooling or both