Geothermal FAQs
Learn what to expect through transparent answers that provide confidence and clarity.
A: GSHPs are highly efficient-heating is 50-70% more efficient than traditional systems, and cooling is 20-40% more efficient, translating into significant utility savings.
A: Yes. GSHPs can handle space heating, cooling, and hot water. A desuperheater can preheat water, saving up to 50% on water heating bills.
A: A desuperheater uses waste heat to heat water—summer hot water is free from cooling mode, winter heating mode provides partial heating, and stand-alone units are available for year-round water heating.
A: Most components are underground; indoor units are similar in size to traditional HVAC units.
A: GSHPs are durable; underground pipes carry up to a 50-year warranty, and internal components are protected from weather.
A: GSHPs are very quiet with no outdoor fan noise.
A: Yes. No exposed equipment, open flames, or fuel tanks; safe for children and pets.
A: Warm air is distributed evenly (90–105 °F), eliminating hot/cold spots common with fossil fuel furnaces.
A: Ground loops combined with modern GSHP design make them the most efficient heating/cooling systems available.
A: Yes. Major components have warranties like conventional HVAC systems; plastic ground loops often have 50-year warranties.
A: Yes. Multiple units and loops can be installed for zoning and load balancing.
A: Lower operating and maintenance costs can recoup your investment in as little as three years; energy savings frequently exceed system payments.
A: Higher upfront cost than conventional systems, but energy savings quickly offset initial investment.
A: Electrical work, ductwork, water hook-ups, and home adaptations may be required. Installers can estimate these in advance.
A: Reduced peak load lowers fixed costs per customer and can reduce kilowatt costs.
A: Some utilities offer rebates or incentives; check your state programs.
A: Retrofits are easy; new installations may require ductwork. Professional installers handle drilling, trenching, and pipe fusion.
A: Not recommended. Proper installation requires licensed professionals for optimal performance.
A: Horizontal trenches: ~10 ft apart; vertical boreholes: 15–20 ft apart. Horizontal installation: 1–2 days; vertical: 1–2 days for drilling, total ~2 days.
A: Horizontal: simpler, lower cost, larger land needed. Vertical: higher efficiency, fewer pipes required, more expensive drilling.
A: Use reputable, IGSHPA-accredited installers with references.
A: Usually sized for cooling; 80–100% of heating load is typical. In cold climates, dual capacity units may be needed.
A: Properly designed systems are unaffected; pipe depths prevent soil movement.
A: All systems require backup; heat pumps handle most heating, with auxiliary heat as needed.
A: Usually yes; minor modifications may be needed.
A: No. Trenches (2–3 ft wide) or vertical loops cause minimal disruption; landscaping can be restored.
A: No; the system taps into constant ground temperature.
A: Yes, as dual-fuel systems using GSHP as primary heat and a furnace as backup.
A: GSHPs reduce costs regardless, but proper insulation and weatherization maximize savings.
A: Efficient operation lowers emissions, reduces fossil fuel use, and improves indoor air quality.
A: GSHPs eliminate COâ‚‚ emissions (~3 million tons), reduce toxic emissions, conserve energy, and provide cleaner indoor air using renewable ground heat.