solutions without

the fluff?

You’re in the right place.


Welcome to Jack Kiefer Heating & Air, LLC. We combine

HVAC expertise with straightforward answers so you can

get the complete comfort you deserve.

HVAC Services

Expert Heating and Cooling Services

As a full-service heating and cooling company, folks throughout the Greater Fox Cities rely on us for HVAC repair, maintenance, and installation. What keeps them coming back is the trust, friendliness, and fair pricing we deliver each day.


Having cooling issues in the summer months can be frustrating. You can rely on our Certified technicians to keep your home cool during the winter months.


Our experts can help with the installation, repairs, and maintainance so that you can enjoy those long hot showers! 


Indoor Air Quality

Protect the health of your family members by ensuring a clean air in you home through our Indoor Air Quality services. 


Don’t wait until your budget allows for new heating and cooling. Financing options are available.


Ensuring maximum comfort through our heating services! We offer full-service repairs, maintenance and Installation. 

Focus On Energy Rebate

This is the time to take advantage of incentives available. There are two incentive tiers available for eligible customers. Click to learn more

HVAC in the Community

Rebuilding Together, Fox Valley

At Jack Kiefer, we believe the Fox Cities are a great place to work and call home. In appreciation, every Friday we go beyond HVAC services, to give back to the community.

Our Mission & Values

Equal parts professional and down to earth.

Our certified HVAC technicians are armed with the know-how to give you valuable, honest advice about your individual situation and needs. Delivering quality work and earning your trust as a licensed and insured HVAC provider is why we’re here.

Trusted HVAC Contractors

Jack Kiefer left the “big guys” who overcharge and under-deliver because he believes in truthfulness and earning trust with every customer.

Fair HVAC Pricing

Our prices are aligned with the industry, but if you don’t need something, we won’t sell it to you.

There When You Need Us

There’s no advanced warning when it comes to a heating or cooling failure; that’s why we’re a call away with 24/7 emergency service.

Your Satisfaction is Our Promise

Some may meet your needs when it comes to HVAC servicing—we think it’s more important to exceed your expectations.


 Hear from Our Heating & Air Customers

“Was real pleased and impressed with Jack when he replaced our furnace. I got several quotes on the project but went with Jack because he seemed straightforward. Jack was flexible with timing and put the furnace in a week earlier than we planned. Jack put the furnace in, in just four hours. I would recommend Jack for anyone’s heating or cooling needs.”

- Greg S.

“Mr. Kiefer is an exceptional person. Very small job, cleaning dryer vent and reconnecting venting as they came loose.  In spite of that, I received top-notch service. Knowing that I was grieving the recent loss of my husband, he would not accept any payment from me:  ‘I was only here 15 minutes. It wouldn't be right.’” 

-Mrs. “Dale” L.

“Awesome work, Glad to have an honest local business you can count on to get the job done.”

-Jeff S.

“He did things at a fair price and did exactly what he said he would. He was very responsive to our needs and was able to explain what he was doing and how things worked. We are very happy with Jack's work and his prices. We recommend him to anyone that needs service on their heating.”

- Charles H.

“When starting up our central air last week we ran into an issue where we knew it wasn't working. We called Jack, he came out quickly the next day and unfortunately gave us the news that we'd need a new unit. He is extremely professional and kind. He gave us an extremely reasonable price and had us up and running a few days later with a new unit. Jack is very responsive to his customers needs, and does great quality work. I would definitely recommend him to anyone looking for repairs or maintenance with their heating and cooling needs.”

-Kelc M.