tldr; Reddit has mixed feelings about the Carrier Infinity System Control, recognizing its top-tier efficiency and proprietary integration with Carrier systems, but noting compatibility issues with other brands and potentially high cost.
Check pricesScores based on sentiment analysis of topic-related comments
Best praise vs top criticism for Carrier Infinity System Control
“Unfortunately it seems no one here was willing to do some research. Op, your existing furnace only has the terminals for single stage heating and single stage cooling. You are opting for a two stage heat pump which needs two stage airflow to remotely work correctly. Plus your existing furnace doesnt have the terminals the support a legacy heat pump anyways, you'd be running your compressor heating on cooling speed. The heat pump is rated UP TO 18 SEER2. You dont have an AHRI matched system so your not getting 18seer2 on a psc motor. Can you pair a 2 stage system to a single stage furnace? Yes. Is it going to be awful and never run right? Yes. Get the furnace and ASHP changed out together. Also, carrier infinity is a wildly different animal on features, performance, and overall offerings. Its significantly more, which is where the 5k difference comes from. However its worth every penny if your looking for something to bring you true comfort.”
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6 Reddit opinions analyzed • Last updated 2/24/2026