Your technicians are always helpful and courteous. So are the ladies (and the boss) in the office. I am proud for my neighbors to see the H & I professional service techs in the clean H & I vans when they are parked by my house. The purpose of this website is to provide our customers, friends and prospects with as much useful information as possible.

In addition to Hart & Iliff's products and services, this website contains information which is relevant to your home comfort needs. Much of this information is contained in articles from our award winning quarterly newsletter Comfort Line.

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Who We Are

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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.

What Our Clients are Saying

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Your technicians are always helpful and courteous. So are the ladies (and the boss) in the office. I am proud for my neighbors to see the H & I professional service techs in the clean H & I vans when they are parked by my house. The installation has exceeded my expectations and I am grateful for your recommendation.

Frequently Asked Questions

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All fuels are rated based on their heat content. The unit of measure is a British Thermal Unit (BTU), which is the amount of energy needed to raise one pound of water one degree. Heating oil contains 140,000 BTUs per gallon, whereas propane contains only 91,300 BTUs per gallon. Therefore, it takes 1.53 gallons of propane to provide the same amount of heat as one gallon of heating oil.

HVAC Services

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All of Hart & Iliff's Heating / Cooling Technicians are Certified New Jersey Master HVACR Technicians or Apprentices with hundreds of hours of training and years of experience. Our Master HVACR Contractor License number is 19HC00083800. 1. Installation, maintenance and repair of all types of heating equipment including oil gas and electric.

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