I have called two contractors to get a price for replacing equipment. One says a Manual J is a waste of time, the other says it has to be done. How can a customer decide if contractors disagree?

What’s the best type of HVAC equipment for my location?

A new filter from the store will work in my HVAC system, won’t it?

A more efficient filter saves energy, right?

Installing a more efficient filter will always result in better filtration, right?

Will a longer-life filter outlast my current filter?

Why is lowering airflow in a HVAC system a problem?

How can I know for sure if a new filter will work in my HVAC system?

Who can you call for filter upgrades?