Category
Career, Work & Trades
Professional know-how, including field references for HVAC and refrigeration technicians.
HVAC and refrigerationCertificationCareer planning
Solutions
- How to ask for a pay rise (and what to do if the answer is no)How to prepare for a pay rise conversation: research your role's pay, gather evidence of results, pick the right moment and know your next step if it's no.
Guides and answers
- Superheat vs. subcooling: what they mean and when to use eachSuperheat and subcooling explained for HVAC technicians: how to calculate each, and why fixed-orifice systems charge by superheat and TXV systems by subcooling.
- How to read a refrigerant PT chartHow a pressure-temperature chart works, how to use it for superheat and subcooling, and why blends with glide use bubble and dew points.
- EPA 608 certification: types, what's tested and how to prepareWhat EPA Section 608 technician certification is, the Core and Type I, II, III and Universal sections, and a practical way to study for the exam.
Apps that can help
Each guide above works without any app. These are tools we make for the same jobs, and their pages list exactly what they do and cost.
