Attention Job Seekers! NOW HIRING dedicated people to join the Althoff Industries Team! Read More
Your Browser Is Incompatible
You are seeing this message because we have detected you are using Internet Explorer 10 (or older) to browse our site. Unfortunately, this means that your browser is too old to display our site properly and that certain areas of the site may display incorrectly or not at all. Please upgrade to the latest version of Google Chrome, Mozilla Firefox, Internet Explorer, Microsoft Edge, or Apple Safari in order to view this site.
Part of being a family-owned and operated business means we want to be transparent to the Crystal Lake, IL community. Here, you’ll be able to find comprehensive videos packed with information about different topics our specialists are knowledgeable about.
Need extra help with your HVAC system? Or perhaps you’d like a bit more clarification on some details you’ve seen in one of our videos? Don’t hesitate to give our pros a call!
Hand It Off to Althoff!
After we get some info from you, we’ll set up a time to discuss your project in further detail.
5 Mistakes that Homeowners Make
2nd Step in Diagnosing a Cracked Heat Exchanger
First Step in Diagnosing a Bad Heat Exchanger
Other Ways a Heat Exchange Can Fail
What is a Heat Exchanger
Why a Crack In the Heat Exchanger is Dangerous
Do I need a service valve kit on tank-less?
What is a hot surface igniter?
What is a flame sensor?
What is a combustion analyzer?
What can I put down my garbage disposal?
Should I disconnect my garden hose from the spigot?
Tour of HVAC Service Technician Van | Crystal Lake, Illinois
Importance of Correct AC Refrigerant Levels
How Your HVAC Tech Detects an AC Refrigerant Leak
How to Check if Your AC Condensate Drain is Clogged
The Importance of HVAC Draft Gauge Measurement
How to Determine Correct Furnace Filter Direction
HVAC Static Pressure Testing
3 Essential HVAC Technician Tools for Accurate Diagnostics
2 Reasons to Measure Furnace Draft: Safety and Combustion Efficiency
Combustion Analysis and Draft Check for CO Safety
#1 Way to Improve Airflow in Residential Home
Crystal Lake Service Technicians: HVAC Problem Solvers