Roberto Mendoza
Role: Licensed HVAC Technician
Roberto Mendoza is a licensed master HVAC technician with 20 years of hands-on field experience. He has installed, repaired, and replaced over 5,000 heating and cooling systems — from central air units to heat pumps to ductless mini-splits — and he knows exactly how each system impacts a household’s utility bill.
Roberto’s specialty is diagnosing the HVAC problems that cause unexplained bill spikes: short cycling, duct leaks, undersized units, and efficiency degradation. He writes from the field, translating two decades of service calls into actionable advice homeowners can use before calling a pro.
Expertise
- HVAC system diagnosis and troubleshooting
- Heating and cooling efficiency (SEER, AFUE, HSPF ratings)
- Heat pump installation and optimization
- Duct system design and leak detection
- AC short cycling, freezing, and capacity issues
- Furnace and heating system efficiency
Credentials
- EPA Section 608 Universal Certification
- NATE-Certified HVAC Technician (Installation + Service)
- 20 years of field experience as a master technician
- Licensed in 6 states (IL, IN, MI, OH, WI, KY)
- Member of Air Conditioning Contractors of America (ACCA)
What Roberto Writes About
Roberto writes our HVAC, heating, and cooling guides — the articles that help you understand how your heating and cooling system affects your utility bills and what to do when something goes wrong.