(908) 995-4825  
760 Frenchtown Road, PO Box 619, Milford, NJ 08848-0619
JD Stem, Master HVACR Contractor Lic. #4246 • PA HIC #PA032216

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Contact Us

Fill out this quick contact form to get in touch with Stem Brothers. Need something more specific? Get in touch with us on our general contact form here.

NOTE: If you are having a heat emergency, please call the office immediately. Do not use e-mail to alert us to an emergency. Thank you!


Click on the question below to see the answer.


Q: How many days do I have to pay my bill?

A: You have 15 days to pay your bill. If it is paid within 7 days you will receive your 5¢ a gallon discount on all products except gasoline.

Q: How do I know how much to pay after a delivery if I am not home?

A: Our driver will leave you a copy of your bill on the door for you. You will then see the amount of gallons delivered, the price per gallon, and the discount, if paid within seven days and if applicable.

Q: How does automatic delivery work and will it cost me more?

A: We use a degree day system to monitor your usage so you never run out. There is no additional charge for this service.

Q: Do you offer any payment plans?

A: Yes, we offer an Easy Payment Plan that begins in July. We also offer a Price Protection Plan (CAP). Please call our office for details.

Q: What happens if my heat is not working in the middle of the night?

A: Emergency service is available. Just give us a call and one our service technicians will be ready to handle any problem you may be having. 7 days a week, 24 hours a day and 365 days a year.

Q: What Fuels do you deliver?

A: We deliver Bioheat® Fuel, kerosene, propane gas, clear biodiesel fuel, dyed biodiesel fuel and 87, 89 and 93 octane gasoline.

Q: How often should my furnace be cleaned?

A: It is HIGHLY recommended that Oil and Kerosene furnaces be cleaned and serviced annually.

Q: Is propane gas clean and efficient?

A: Yes, Propane is both clean and efficient. Propane has long been recognized as the "green" energy. By using this energy, homeowners can help cut emissions and protect the environment.

  • Propane, on average, costs about half as much per BTU as electricity.
  • Propane burns hotter and more evenly than many other fuels.
  • Propane appliances have a shorter energy savings payback period.
Q: Is oil heat safe?

A: Unlike gaseous fuels, Bioheat® Fuel will not support combustion (flame) unless the temperature is about 140 degrees Fahrenheit. There is not enough fuel vapor to cause an explosion or fire.

Q: Can I arrange to have my bill automatically charged to my credit card?

A: Yes. Please call our office for further details.

Q: What is your primary marketplace?

A: Stem Brothers was founded in Milford, NJ, more than 60 years ago but has grown to serve all of Hunterdon County, including the county seat, Flemington, NJ. In addition to Flemington and Raritan Township we reach all other Hunterdon County communities as well as parts of Warren County, including Alpha and Phillipsburg. We also deliver and service customers in parts of Bucks County, Pennsylvania.

Q: What is your fastest growing area?

A: Without doubt our quickest and greatest growth has been in the Flemington and Raritan Township area. We enjoy continued growth throughout our region but have found Flemington to be especially receptive to our quality service and superior products.

Q: What products does Stem Brothers handle?

A: Until recently the quick and simple answer would have been heating oil, propane, diesel, kerosene and gasoline. Recently we became the first and only distributor in our marketplace to include Bioheat® Fuel and biodiesel to our product list. In fact, we have completely replaced heating oil and diesel with Bioheat® Fuel and biodiesel.

Q: Are there customer benefits to using Bioheat® Fuel or biodiesel?

A: Yes, there are many benefits. Some would argue that the greatest benefit from using Bioheat® Fuel and biodiesel is the reduced carbon impact upon our environment. We think that's very important too, but we also know there are tangible benefits to our customers. Cleaner burning fuel, such as Bioheat® Fuel, equates to improved efficiency, as well as a continuously maintained clean fuel system operation. Fuel pumps, whether for heating oil or diesel, benefit from the added lubricity of Bioheat® Fuel and biodiesel, not to mention it is a renewable product that reduces our dependency on foreign oil.

Q: Where can I purchase Bioheat® Fuel?

A: Only at Stem Brothers, Inc., if you are within our service area.

Q: How can I purchase biodiesel?

A: If you have storage and pumping facility at your business, home or farm, we deliver. It is also available at our Citgo stations in Milford and Frenchtown. Biodiesel is also available at the Shammy Shine Car Wash Citgo station in Flemington, NJ.

Q: How much more will Bioheat® Fuel or biodiesel cost me?

A: While it is a superior product the answer is Stem Brothers does not charge additional for Bioheat® Fuel or biodiesel. Retail pricing is primarily a function of competition and Stem Brothers is favorably positioned when it comes to retail pricing for all of our products. That would include Bioheat® Fuel, biodiesel, kerosene, propane and gasoline.

Q: What about installation and service?

A: Stem Brothers handles new installations, maintenance and repair with an in-house staff. If you are a Stem Brothers customer with a service matter, we are on-call 24 hours a day, seven days a week. Our pledge to our customers is prompt response by qualified service personnel 24/7.

Q: If I live in Flemington or Clinton do I pay more for my Bioheat® Fuel than the customer that lives in Milford?

A: No, our price for Bioheat® Fuel and other products is consistent throughout our marketplace. We offer the same quality products, and 24/7 friendly service whether you live in Milford, Clinton, Frenchtown, Flemington, Alpha, Phillipsburg or any of the other dozens of communities we serve.

Q: Am I able to order Bioheat® Fuel online?

A: Yes, Bioheat® Fuel and propane may be ordered online at www.stembrothers.com but you should be aware that an order placed online will be processed during normal business hours and confirmed by our staff before delivery. Please allow 48 hours.

Q: What other Stem Brothers activity is there in Flemington, NJ?

A: Stem Brothers is proud to be the primary sponsor of the Hunterdon Land Trust Alliance's seasonal "Farmer's Market" at Dvoor Farms on Route 12, Flemington.

Q: In addition to the introduction of Bioheat® Fuel and biodiesel into the market place have you launched other new initiatives recently?

A: The CAP program provides our customer the opportunity to purchase price protection to "CAP" the price of heating oil or propane for the coming heating season. It's like buying peace of mind knowing that the amount you've budgeted for energy is not going to exceed that price.

Q: Are there other customer purchasing programs?

A: We also have an EZ Pay budget plan and a CAP budget plan; customers pay a monthly price based on previous usage. In this manner the customer pays a little each month instead of facing a larger invoice upon delivery of their Bioheat® Fuel or propane.