At Comfort Pro, we like to ensure our customers are well-informed on their purchase decision before any charges are made. Geothermal systems are among the most energy efficient HVAC units on the market. No other unit comes close to geothermal in actual monthly savings immediately after installation. But all homeowners have questions about it before their purchase, so we’ve compiled some frequently asked questions (FAQ) about geothermal for your convenience! If you have any question not answered here, feel free to contact us at any time.

Geothermal heat pumps are an HVAC system that uses coils installed underground that use the Earth’s natural, constant temperature to heat and cool your home. See the image at the top of the page for a diagram of the average installation.
Geothermal systems are the most energy efficient form of heating and cooling your home on the market today. On average, they are 400% more efficient than your average oil or gas furnace.
Glad you asked! We outlined this answer in this blog post.
Very similarly to heating, but in reverse. Instead of pulling the heat from the Earth and circulating it to your home, the system pulls the heat out of the air in your home and circulates it back to the Earth via underground loops.
The cost of a system varies on the size of your yard and home, and whether you get a vertical or horizontal installation. On average, they cost around $20,000-25,000 to install.
About 70% of your heating bill and 40% of your cooling bill. The average PA home costs about 8 cents per kWh. Your heating bill would be about 70% less, meaning around 2.4 cents per kWh for heating and 4.8 cents per kWh for cooling. This will come out to saving you hundreds of dollars per year on your energy bills.
Absolutely! Tax incentives, grants, and loans are all available. There is currently a federal tax credit for 30% of the installation cost available among the many financing options out there. Check out our blog post on savings here.
Generally, yes. The well can be used to your benefit too, assuming it provides water. Wells that don’t supply enough water for viable use in your home may still provide enough for an open loop geothermal system to use to transport the energy. If you rely on your well for water exclusively or nearly exclusively, it may be too difficult to install around. Although other options are available, such as vertical loops.
Open loop systems use a water source, like a pond or well to heat and cool your home. Closed loop systems use anti-freeze solutions which circulate through the loops underground to transfer the temperatures from the ground source to the geothermal heat pump system.
Yes. Ductwork can remain in-place. Minor adjustments may be made, but nothing drastic. Every HVAC system can be replaced with a geothermal heat pump; however, some are more difficult than others.
Yes! According to Energy Environmental (, replacing 100,000 3-ton conventional HVAC systems with 3-ton geothermal heat pumps “would be the equivalent of removing 58,700 cars from our highways or planting more than 120,000 acres of trees.”
It depends on the system and your home. We will lay likely between 1500-3000 feet of pipe depending on the size of your home. Closed horizontal loop systems (the cheapest to install) are usually about 500 feet in length and 2 feet wide. The hole we dig is usually only a couple feet wide and about 6-10 feet deep. If we install a vertical loop system, the holes are not long, but go very deep. Depths varies based on the home’s size.
Generally, no. Unlike traditional methods, geothermal heating and cooling is fairly stable. Because the pipes are built to last, there are generally no leaks. They never move, so there’s no chance of damage in this respect. However, earthquakes can affect the loops. Pennsylvania residents are unlikely to experience these issues. One of the benefits of geothermal systems is the lack of maintenance; however, nothing is “maintenance-free.” We outlined the few things you should do to ensure your system’s long lifespan here.
Yes. We can install a vertical loop which requires very little yard space. We can come take a look and give you a rough estimate on what it will cost and how the process works, if you’d like. Just contact us.
Yes, it is reliant on electricity. However, geothermal heat pumps use significantly less electricity than traditional units.
In short: very well! Statistically, here’s your answer: one of the most efficient central A/C and air source heat pump in 2015 is the 12,000 capacity LG LSU/LSN Series, which costs about $86 per year to operate. Similarly, a 24,000 capacity open loop ClimateMaster Trilogy 45 Q-Mode Series system costs about $94 per year to operate and has twice the life expectancy and virtually no maintenance compared to the LG units. The geothermal system is twice the capacity, twice the life expectancy, and about 95% less maintenance for similar operating costs.
You are not currently required to have any training or licenses in the geothermal installation industry; however, you do have to be licensed for HVAC installations. For this reason, it’s absolutely vital that you choose someone with experience installing these systems. Otherwise, you put yourself at risk of losing thousands of dollars for a faulty system. If you’re in the Reading, PA or surrounding areas, Comfort Pro is an experienced geothermal installer and we’d be happy to talk with you. Contact us at any time online or by phone at 610-926-4200.