How often should I replace my filter?

Every house is different but a good rule of thumb is if your filter is 1″ wide, check or replace monthly.  If your filter is 4″ wide, check or replace every 9 to 12 months.


Which direction should the arrow point on the filter?

The arrow dictates which direction the air should flow through the filter.  Therefore, the arrow should point toward the furnace.


Should I cover my air-conditioner in the winter?

It’s not necessary but if you decide to do so, only cover the top of it.


What should I set my thermostat for?

Again, every house is different.  However, most people are comfortable in the winter setting their house between 68 and 72 degrees.  In the summer, most people find comfort between 75-80 degrees.


What is the average life of a furnace?

A well-installed, quality system should last 15-20 years.  In that time it’s not uncommon to have a few repairs but with regular maintenance, your system should have a good life.


How often should I have my furnace maintained?

Manufacturers are pretty much in agreement that routine maintenance should be done on a yearly basis.   This is especially important as the system gets older.






Rudy Uttke & Sons (or Uttke Heating) is a full service heating and cooling company who has been providing exceptional service to the Milwaukee area for over 70 years. At Uttke Heating, we are proud to say that our technicians have the expertise to service all makes and models of air conditioning and gas / hot water heat and ductless and Mini-split systems. Uttke Heating also sells and installs air-conditioning and furnaces with reputable names.


Uttke Heating will provide you with efficient and responsive service as you need it, whether it is a scheduled maintenance appointment or an emergency repair call. Our technicians are experienced, skilled and understand how important it is to deliver you the best service that you deserve. As a company, we strive to give each and every one of our customers respect and we would be honored to add your name to our long list of satisfied customers.


In addition to sales, installation and service for furnaces and air-conditioning systems, Rudy Uttke & Sons offers several other services that many homeowners need on an annual basis.

Schedule an Appointment Today!

Schedule an appointment by clicking the button below or by calling us Monday through Friday, 8:00AM to 5:00PM at 414-483-2159.