HVAC Archives - UnderhoodService
Cabin Air Filter Replacement

There are three major reasons to replace a cabin air filter in the winter.

10 Alternative Uses For A Smoke Machine

Don’t limit yourself to just checking emissions controls – use your smoke machine to check numerous vehicle systems.

Could Your A/C Recycling and Recovery Machine Be Overcharging?

The amount of refrigerant required by vehicle A/C systems has decreased during the past two decades.

Losing Your Cool: When Compressors Go Bad

A bad A/C compressor and a bad
explanation steered me to an
aftermarket solution.

R1234yf Refrigerant Service

It is not a question of if but when you’ll have to deal with R1234yf refrigerant. Here’s what to expect.

Testing A/C Or Heater Blower Motor Circuits

The heat eventually burns out the blower motor resistor, and, in many cases, causes the electrical connector to melt.

Ford F-150: Lack Of Heat In Low Temperatures

This condition may be due to deposits from the engine coolant becoming trapped in the heater core.

Prepare For R1234yf Now

Currently, there are approximately 35 million vehicles on the road with R1234yf in the HVAC system.

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.

HVAC Sensors: More Than Just Temperature

HVAC systems have come a long way in the past 15 years. While the basics of heating and cooling may be the same, the controllers and sensors have improved dramatically. No longer does a driver have to worry about dealing with fogged-up windows or bad smells driving behind a semi-truck.

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.

Dorman Introduces Aluminum Heater Hose Repair Kit

Dorman HVAC Heater Hose Connectors are made to resist brittleness, cracking and coolant leaks. The hose is designed to withstand extreme temperatures from the engine’s coolant for long-lasting durability. Additionally, the Y-connector material is upgraded from plastic to aluminum to prolong the service life of the part.