ThermoMate 5.28GPM Condensing Tankless Water Heater 114KBTU 0.86 UEF Natural Gas
✅ Dual heat exchanger (stainless steel + oxygen-free copper) captures waste heat, saving you 15% energy vs non-condensing units. 0.86 UEF, real efficiency. ✅ Two showers at once? Yes. At 65°F inlet, get 105°F at 2 GPM each. No cold shocks. Smart chip adjusts power 20,000x/sec, keeping temp within ±1°F. ✅ Freeze protection down to 41°F – ceramic heating cores auto-activate, no burst pipes. 8 built-in safety protections. ✅ 3.5″ LED touchscreen shows real-time flow, fan speed, flame status, and error codes. DIY-friendly with standard 3/4″ NPT water & 1/2″ NPT gas connectors. Compact 21″H x 13″W – fits in a closet. ⚠️ Condensate water is mildly acidic. Use a neutralizer kit (sold separately) to protect drains – standard for condensing units.