Well Drilling Services
Residential Well
We are the one stop shop for drilling your new well, digging the trench from the well to the house, installing the best Goulds pump system, and filtering any impurities so your new well will provide great water for years to come.
Commercial Well
We can drill your new well for whatever need you have. Whether it is for snowmaking, or process water for your company. We will listen to your plans and design the correct well system to meet your needs.
Public Well
As a certified water system operator and a licensed water well drilling company, Gilford Well Company can design, permit, and install a new public well system to meet all NHDES codes. We will make sure the well is placed in the proper location and keep you informed of all state and federal requirements.
Irrigation Well
Gilford Well Company is one of the oldest lawn irrigation installation and service companies in New Hampshire. We understand exactly what is needed from an irrigation well in order to keep your irrigation system operating at its best. Whether we are installing the irrigation or not, we can provide the best irrigation well for that system because of our irrigation knowledge.
Geothermal Well
We have been installing closed and open-looped geothermal systems for 20 years. We have worked with many of the local HVAC contractors to make sure your geothermal earth loop is as efficient as possible. Call us and we can help design the best system for your needs.
What is our Service area?
We are a licensed well drilling company and will drill your well anywhere in the State of New Hampshire using the most modern equipment available.
A Guarantee Second to None
Upon completion of a new well and pump installation, we guarantee to provide a clean (bacteria free) water test from the new well. If we cannot provide that we will find the problem or drill a new well.
24-Hour Emergency Service
Gilford Well backs up their products with a 24 hour, 7 day a week emergency service. Any time, day or night, we're only a phone call away.
More Information
See the Common Questions and Fact Sheets page for more information about residential wells, well pumps, filtration systems, and lawn irrigation systems.
Geothermal Heating & Cooling Systems
High Oil Prices Breaking Your Budget?
We can help! An environmentally-friendly geothermal heating system may be the answer to your high heating costs. According to the U.S. Environmental Protection Agency (EPA), geothermal systems are "the most energy-efficient, environmentally clean, and cost-effective space conditioning systems available today." These extremely high levels of efficiency are possible because a geothermal heat pump only uses electricity to move heat, not produce it.
How Do Geothermal Systems Work?
Water is circulated through the earth and acts as a heat transfer medium. In the winter, heat is transferred from the earth to your home, and in the summer, heat is transferred from your home to the earth.
Are there different types of geothermal systems?
Yes, there are essentially two types of geothermal systems used in New Hampshire, open-loop and closed-loop. Our trained professional can work with you to determine the best system for your needs.
  • Open-loop geothermal system includes a groundwater well (or wells), a water well pump, piping and a compressor [heat pump] installed in the structure. In this type of system, groundwater is used as the heat transfer fluid and is pumped out of the well, and circulated through the structure's heat pump where heat is extracted from or injected into the water. Then the heated/cooled water is re-injected into the same groundwater well from which it was withdrawn or a separate well dedicated to re-injection.
  • Closed-loop geothermal system. In these systems, an antifreeze solution is circulated through a continuous loop of plastic or copper pipe, which is installed in either a drilled well, horizontal trench or the bottom of a surface water body. Similar to the open-loop system, heat is either injected into or extracted from the antifreeze by the heat pump; after which, the fluid is re-circulated back into the loop of pipe installed in the ground.

More Information
See the Common Questions and Fact Sheets page for more information about geothermal heating and cooling systems.
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