Sunny knows EPA 608, the R-454B transition, equipment fault codes across every major brand, and service procedures — hands-free, in any language.
EPA regulations, refrigerant handling, equipment diagnostics, combustion analysis, load calculation basics — all hands-free, all in the language your tech speaks.
Certification requirements, refrigerant handling rules, venting prohibition, leak rate requirements, recordkeeping, and recovery procedures by system type.
R-22 to R-410A to R-454B transition guidance. A2L flammability requirements, detector needs, charge-by-weight procedures, and retrofit options for legacy systems.
Equipment fault codes across Carrier, Trane, Lennox, Goodman, Daikin, Rheem, York, Mitsubishi, and LG. Most likely cause first — not a list of 12 possibilities.
Superheat method for fixed orifice systems, subcooling for TXV systems. Target values, what deviations indicate, and TXV hunting diagnosis.
Gas furnace ignition systems, heat exchanger inspection, combustion analysis, gas valve diagnosis, and venting requirements by efficiency rating and BTU.
Thermostat wiring, low voltage circuit diagnosis, communicating systems — Carrier Infinity, Trane ComfortLink, Lennox iComfort, Ecobee, and Nest compatibility.
The industry is mid-transition and every tech needs to know where each refrigerant stands. Sunny has the full crossref, the A2L safety requirements, and the service procedures for every refrigerant your team will encounter.
Ask Sunny about any refrigerant — status, handling, crossref.
14-day free trial on all plans. No setup fee. Cancel anytime.
EPA 608, refrigerant crossref, fault codes, combustion basics. Standard mode.
Add ordering mode for supplier parts lookup and preferred brand routing.
Engineer mode for load calcs, system design, and ASHRAE compliance.
Per shop, per month. Every team member included. 14-day free trial on all plans.
14-day free trial. Works on any tablet. No setup fee.