
Heating Oil
Delivery and ServiceWe deliver BioHeat® and Kerosene. Our technicians are available to check all of your oil appliances as well.
Propane Gas
Delivery and ServiceWe've been providing exceptional propane gas service in New Hampshire and Maine for more than 80 years.
Heating and AC
Install and ServiceAt D.F. Richard Energy we sell and install all of the best major brands for your complete propane gas and oil energy needs.
Self-Cleaning No Maintenance Air Purification
D.F. Richard can help protect your home from mold, bacteria, viruses, and other pollutants with the iWave-R air purification system.
The iWave-R is a no-hassle, no-maintenance solution that can be installed right into your existing ducted HVAC system.
Learn More About The iWave-R
Service Areas
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Best of the Seacoast
Come see why we have been voted "Best of the Seacoast" for three years running!



Spring Preparation
Spring is finally here! There are many things you can do now to avoid problems and have a trouble-free spring. Here are a few suggestions.
- Schedule yearly preventative maintenance on your heating, cooling, and hot water equipment.
- Replace all air filters.
- Keep your home comfy upon your arrival by investing in a wireless thermostat. Monitor your home while your away.
- Clean your registers, vents, and baseboards to remove dust buildup and pet dander before you turn on your air conditioner.
- Keep access to outside equipment easy for maintenance. Avoid planting in these areas.
- Replace batteries in smoke detectors/CO2 detectors.


Email: [email protected]
Phone: 1-603-742-2020
Mail: PO Box 669, Dover NH 03821-0669
Office: 124 Broadway, Dover NH 03820
We are open from 8am — 4:00pm weekdays.
24/7 Emergency: 1-800-649-6457