A ground-source heat pump moves heat rather than generating it. In winter, a fluid circulating through a buried loop field absorbs heat from the ground, which stays at a stable 50-55°F below the frost line, and transfers it indoors. In summer, the process reverses, pulling heat out of the building and depositing it into the ground. Because the system is moving heat rather than burning fuel, it delivers more BTUs of heating or cooling per unit of electricity consumed than a conventional furnace or air conditioner. That ratio, the coefficient of performance, is what drives the long-term utility savings ground-source systems are known for.
Denver’s elevation introduces a variable that most HVAC load calculators don’t account for by default. At roughly 5,280 feet, air density is lower, which affects how heat moves through ductwork and how the refrigerant circuit performs. A system sized using sea-level assumptions can fall short of its rated BTU output on the coldest nights, when you need it most. Every enquiry we arrange starts with a load calculation that applies altitude derating, so the unit specified is sized for Denver’s actual conditions, not a national average.
The loop field is the part of the system buried in or submerged under your property, and its configuration depends on what your lot can accommodate. Vertical loops require drilling 150-400 feet per ton of capacity and suit urban and suburban lots where land area is limited. Horizontal loops are trenched at 4-6 feet depth and work well where acreage allows. Pond or lake loops submerge coiled pipe in a qualifying water body, avoiding the cost of drilling. Each option has different soil, water, and land requirements, and the right choice is determined by your specific site, not a default preference.