About Us

Hart & Iliff was founded in 1889 by two brothers-in-law, Nathan H. Hart and Louis S. Iliff. The company initially sold feed and grain, coal and building materials. Eventually Hart & Iliff branched out into selling heating oil and installing/servicing heating and air conditioning equipment. After a number of years operating as partners, Louis Iliff bought out Nathan Hart. The business was run by the Iliff family continually until 1971 when it was purchased by Albert & Florence Brand.

Our Personal Guarantee

For over 130 years we have built our business by consistently doing what is right for our customers. We guarantee your satisfaction with all of our products and services.

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Who We Serve

Hart & Iliff has provided top quality products and services to the residents of Sussex, Northern Morris and Northern Warren Counties since 1889. Our products and services include:

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What Our Clients Are Saying

"Your response to a service call has been outstanding. Your technicians are first class and know their trade."

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Frequently Asked Questions

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What Our Customers are Saying

These are unsolicited comments received from Hart & Iliff customers.

"Your technician is an outstanding representative of your company. He is thorough and complete and does a super job!"

"Your response to a service call has been outstanding. Your technicians are first class and know their trade."

"Very pleased since I have been with Hart & Iliff. Was with a previous company for 20 years and never felt as comfortable as I am now, with your service."