Hart & Iliff Products

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:

  • Delivery of our exclusive Ultrablend Heating Oil.
  • Installation, repair and maintenance of all types of heating equipment.
  • Installation, repair and maintenance of domestic hot water making equipment, including solar thermal hot water making systems.
  • Installation, repair and maintenance of all types of central air conditioning equipment.
  • Installation, repair and maintenance of ventilation equipment.

Radiant Heat

Hart & Iliff is the local distributor and installer for Roth, a leading manufacturer of radiant heat systems. You may have seen Underfloor Radiant Heating Systems featured prominently on the television series “This Old House." Underfloor radiant heat is the most modern, comfortable and efficient type of heat available today.

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Radiant Heating Floor
Ultrablend Oil Tanker Truck

Ultrablend Heating Oil

Ultrablend® contains water inhibitors and stabilizers that help prevent formation of gums and sludge, keeping fuel lines and filters free from blockage. An EPA approved microbiocide (Registration No. 1 706-101 ) controls algae and microbiological growth.

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Roth Double Wall Safety Tanks

Roth Safety Tanks are manufactured in the United States using state of the art computerized technology, to ensure the highest quality standards.

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Roth Oil Tanks
Solar Thermal Heating on a roof

Solar Thermal Hot Water Heating

If it was possible to capture all of the energy generated by the sun we could meet the daily energy demands of the world. Solar hot water heating systems are a great way to collect some of this free energy, save money, and reduce pollution. Solar domestic hot water heating makes great economic sense since it can be used 12 months a year.

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Buderus G115WS Residential Oil Boiler

The Buderus G115WS is a residential oil-fired boiler designed with high output and high efficiency in mind. It delivers more heat for every dollar you spend on fuel, no matter if you install it in a new home or as a replacement for an existing unit.

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A Product image of Buderus Boiler
Peerless Residential Oil Boiler

Peerless Series WBV/WU Residential Oil Boiler

When the weather gets cold, keeping your family comfortable is a top priority, and yet, that comfort must be affordable.The appliance that heats your family's home has to be dependable as well as economical.

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Lochinvar Knight Condensing Gas Boiler

The Lochinvar Knight Condensing Boiler is the most innovative gas boiler on the market, with technology that ensures dependable warmth even on the coldest days, and very low energy bills. Every Knight boiler comes with a SMART SYSTEM control. This control is the most advanced boiler control available today.

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Lochinvar Gas Boiler
Riello Burners

Riello Burners

Flame retention technology was a major advance made in oil burners about 20 years ago. The Riello Burner is the most reliable state-of-the-art burner available today. The features and benefits of the Riello Flame Retention Burner are as follows:

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Central Air Conditioning

When shopping for an air conditioner, look for three things: the SEER, the Energy Star label and a brand you can trust.

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Carrier Central Air Conditioner
Split System Air Conditioning

Split System Air Conditioner Systems

June, July, and August are the time of the year that your air conditioning system gets a true workout. The hot, humid New Jersey summer is great for taking time at the shore, but the heat and humidity never take a day off. If the central air unit in your home isn't up to the task, or maybe there's one room in your house that just won't cool down, a split system air conditioning system (also known as ductless mini-splits) might be the solution.

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Unico/Spacepak High Velocity Heating/Air Condition

High velocity heating and cooling units actively circulate air throughout the room and the entire house, resulting in comfort that is uniform.

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Humidex System


As with many products offered by Hart & Iliff, our first experience with Humidex was to test one in my home. My basement is extremely humid and always had a damp, musty smell. Everything my family stored there would pick up the smell, including luggage, books and clothing.

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Ultra Low Sulfur Diesel (ULSD)

Hart & Iliff now offering premium quality Ultra Low Sulfur Diesel Fuel (ULSD) at our Newton facility on 4 Hampton Street. In addition, if you have your own diesel tank, we can make deliveries to your location.

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Ultra Low Sulpur Diesel

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What Our Customers are Saying

These are unsolicited comments received from Hart & Iliff customers.

"As always, Hart & Iliff service was fantastic. It seems as if all my problems are at night or on weekends. Hart & Iliff service techs respond promptly to fix the job the first time!"

"We have been so impressed with all the services you have provided us with! From the new tank to the Saturday evening emergency service - We have been incredibly happy! Thank you!!!"

"We are very pleased with the service you gave us in fixing our air conditioner. Each person who came to home was understanding and sympathetic to the situation at hand. The number of days and long hours the team worked during the one of the hottest summers on record, far exceeded our expectations. Thanks to all who worked to get our air conditioner back on-line."