HVAC System Service Archives - UnderhoodService
HVAC Heat Pumps

In theory, heat pumps can be three to four times more energy-efficient than conventional electric heaters.

Compressor Oil for R1234yf

Working on R-1234yf systems is not that different from the R-134a variety.

AC Condensers

The characteristics that make the parallel-flow condenser so efficient are among its major drawbacks as well.

Curing Springtime Air Conditioning Smells

Air conditioning scents can come from a host of things.

Toyota Tech Tip: Odors In The A/C System

Toyota vehicles may exhibit odors naturally occurring from the HVAC system and/or related environmental factors.

A/C Oil Service: Achieving Balance

HVAC systems often fail because the air conditioning compressor fails. Not following the proper service procedures or compressor oil recommendations could be factors that contribute to premature compressor failure.