🎮 4X Control Universal Replacement SmartZone Controller Review

I had a 20 year old Carrier Zone controller that was on its last legs. I bought this Ecojay SmartZone 4X controller to replace my old one when I upgraded the furnace and chill condenser. Before I bought any EcoJay product, I called to make sure it would work with my gear. I got a slow, long, thorough discussion and decided to buy it. After my new HVAC equipment was installed, I installed the zone controller. The product does exactly what the sales literature says it will. I've been using it for

I suspected that my zone card had failed. I wasn't 100% sure. So I waited and put off buying it because it was expensive. Eventually I gave in to my instinct and ordered it. The next night the old zone panel was completely out of order. There is no heating for two days. This board arrived a day early and I was so excited! I was already quite familiar with my old zone board given the problems we had over the years. Still almost 20 years old. Stove switch turned off. I photographed where and how…

Two years ago I had to replace the oven and get a two stage unit with 'single stage compatibility' as my old Honeywell EMM3 zone panel required. During a one-bit negative cold snap, the oven began to trip its protection limit circuitry (the second stage ran too long for one zone). Replaced Honeywell with Ecojay and all issues have been resolved. Between the supply air temperature sensor and "hold in first stage when multiple zones don't need heat” the firing performance is at a new level. The…