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EXPERIENCED heating contractor in Mifflinburg, PA

Klose H L & Sons Inc service van

Our company was established in 1939 by Esther and Herbert ”Brownie” Klose, and it became a family business when their sons wanted to join the company. This tradition has been kept to this day; our business is operated by Tim and his three sons. As a local heating and cooling contractor, we endeavor to keep the same values and commitment to our customers that ”Brownie” founded our company on.   

We strive to provide exceptional HVAC solutions to our valued customers, in Union County and the surrounding area. 

H. L. Klose & Sons, Inc is built on the referrals of our customers and our fast— dependable service. We specialize in residential heating and air conditioning.

We can handle all types of repairs or maintenance to oil burners and air conditioning systems. Yearly cleaning and servicing of cooling and heating systems. We also sell and install heating furnaces and air conditioning systems. 

We understand that you never know when your furnace or air conditioner will call it quits; usually, it happens outside of business hours. Therefore, we provide 24— hour service to our loyal customers. 

Man Working on Outdoor AC Unit


With nearly 80 years of experience in the industry, we are uniquely qualified to repair or replace any furnaces or air conditioning units. Our team is able to diagnose issues quickly and effectively to get your HVAC system back in working order as soon as possible

Dedicated Service

We've built a reputation as an industry leader in our field. We only use the highest quality parts when we install or repair air conditioners and furnaces. 


We believe in communicating with our customers, detailing exactly what is wrong and how we are going to fix it. There will be no surprises when you work with us.