When Walter Mehrholz, founder of All Temp Heating & Air Conditioning Company, first opened his HVAC business back in 1938, most Chicagoans could not imagine a future of year ’round ideal indoor comfort. But here we are, 73 years later, enjoying the most advanced air conditioning to keep us cool during hot Chicago summers, and high-efficient furnaces to keep us warm and toasty when the icy Chicago winter winds blow.

Today, All Temp is Chicagoland’s most trusted company for residential indoor comfort equipment and service, and the largest, leading Bryant dealership in the country. From Evanston to Naperville, Chicago’s south suburbs to the North Shore, All Temp’s reputation for excellence and customer satisfaction continues to grow… by the hour. With more than 659,000,000 hours on the job, few Chicago companies can claim more experience. All Temp’s highly trained technicians have solved thousands of equipment problems—repaired thousands of furnaces and air conditioners–sold and installed a multitude of comfort equipment to keep Chicagoans in their comfort zone. The service, technology and savings behind the Bryant products they sell makes All Temp the #1 choice for home comfort quality.

Yet, some things have not changed in 73 years. The company is still a family-run business, today spearheaded by Walter’s grandson, Robbie Mehrholz. And the company still offers free in-home estimates and stands behind every single sale and service they provide to Chicagoans. For more information, and current sale prices on air conditioners, call 1-800-All-Temp.

Looking for the most reliable and recommended repair service for your furnace? Or, who to call for buying and installing a new furnace or a/c? Or, what company offers the best prices on the highest quality equipment? Fastest service? Serves your neighborhood? If you want unbiased answers from consumers in the Chicago and Chicago suburban area; people who are willing to share their real life experiences, you’ll find a wealth of helpful information on Review Sites on Yelp or Angies List or a number of other websites. For instance, All Temp Chicagoland Heating & Air Conditioning consistently receives high marks and thank yous from homeowners throughout the metro area. The company has been at the forefront of residential heating and cooling since 1938, and is one of the largest Bryant dealers in the country. Their techs are factory trained, their service staff is top rated and helpful, and they stand behind their work, and offer a best price guarantee. But the true test of this family business is measured by those who call All Temp and have used their services. And the All Temp name and high rating is supported by positive comments of consumers from Chicago to Deerfield to Naperville. Customer satisfaction isn’t just an advertising phrase. It’s a way of doing business. Of course, don’t believe what you read in a blog like this. Believe what your neighbors say on review sites. Their experience can save you from guessing, and likely save you money and headaches in the long run.

A typical single stage furnace has one level of heat. If your furnace is 100,000 btu’s, each and every time the furnace starts and runs, the heating level is at the maximum (and only) setting. This is a very good thing on the coldest day of the year as you will need every one of those btu’s to heat your home.

In the Chicago area, the size of a furnace is based on being able to keep the home 70 degrees when the outside temperature is 10 below zero. However, it rarely gets that cold and the rest of the season your furnace is starting and stopping in short “cycles”.
Think of it as a car that can only go full speed or stop. It is great on the highway but not so good for driving the kids to school or running errands.

Running the furnace at full speed during most of the heating season (when it’s not ten below zero) causes shorter run times as the home heats up rather quickly given the furnace is running at its maximum (and only) heat level. This can cause major temperature swings and contribute to not only a potential higher energy bill, but a home that can be quite uncomfortable.

A two stage furnace is like having a large furnace for those subzero days when you really need it and a smaller furnace for the rest of the season when the temperatures are more typical of Chicago winters. The first stage level is set at 60% (or 60,000 btu in this example) and the second stage level is the maximum btu of the furnace (100,000 btu in this example).
According to ASHRAE (the American Society of Heating ,Refrigeration, and Air Conditioning Engineers) a typical two stage furnace in the Chicago area only uses the high (maximum) level of heat 17% of the time. That means that a single stage furnace is producing too much heat 83% of the time!

Producing too much heat not only costs money in energy usage it creates extreme temperature swings contributing to an uneven and uncomfortable environment.

A two stage furnace installed by a quality contractor will provide a more evenly heated and efficient living space. On the first stage (lower heat level) the blower motor is set to run at a slower speed which helps to reduce the “blast’ of heat associated with single stage furnaces. This provides a more gentle flow of heat throughout the home. If needed, you still have the second stage at the ready for those below zero days.

Operating the furnace on its first stage (lower heat level)has some additional benefits as well. If you are using a whole house humidifier, you can increase your overall comfort as the humidifier only operates when the heat is on. In a two stage furnace, the lower heat level coupled with the lower fan speed will keep the heat on a little longer allowing the humidifier to run for longer periods of time.

If you are using an electronic or media filter system, this longer, slower, cycle allows more circulation throughout the home filtering the air in your home more effectively.

Lastly, the technology used in a two stage furnace is simple and inexpensive. It is fairly commonplace and should not be considered a tricky “gadget” that can go bad and cost a fortune to repair.