High-efficiency Units
High-efficiency Units | HVAC Unit Replacement | Heating and Air Conditioning | Knoxville
When Knoxville’s humid summers and chilly winters push your old system to its limits, HEP’s high-efficiency units step in to restore total comfort and slash utility bills. Our factory-trained technicians analyze your home’s load requirements, remove outdated equipment, and install cutting-edge models engineered for quiet operation, precise temperature control, and Energy Star–certified savings. From courteous arrival to meticulous cleanup, you’ll feel the HEP difference every step of the way.
Choose us for HVAC unit replacement and tap into flexible financing, robust warranties, and 24/7 emergency support—all from a local team that’s been serving East Tennessee families for decades. Schedule your free in-home consultation today and discover how effortlessly high-efficiency heating and air can fit into your life.
FAQs
What qualifies as a “high-efficiency” HVAC unit in Knoxville, and how is it measured?
High-efficiency HVAC systems are typically defined by a Seasonal Energy Efficiency Ratio (SEER2) of 16 or higher for air conditioners and a Heating Seasonal Performance Factor (HSPF2) above 8.2 for heat pumps. These ratings indicate how much cooling or heating you get for each unit of electricity consumed. Because Knoxville experiences both hot, humid summers and chilly winters, choosing equipment that meets or exceeds ENERGY STAR® guidelines and the latest DOE SEER2 standards ensures lower operating costs and optimal comfort year-round.
How much can I expect to save on energy bills after replacing my old unit with a high-efficiency system?
Savings vary with the age and condition of your current equipment, home insulation, and thermostat habits. In most Knoxville homes, upgrading from a 10-SEER air conditioner to a modern 18-SEER2 system can cut cooling costs by 35–45%. Switching from an 80% AFUE furnace to a 97% AFUE gas furnace or to a dual-fuel heat pump can reduce heating costs 15–30%. Over a typical 15-year lifespan, that often equals $3,000–$6,000 in utility savings, more than offsetting the higher upfront investment.
Are there rebates or tax incentives available in Knoxville for high-efficiency HVAC replacements?
Yes. The Knoxville Utilities Board (KUB) partners with the Tennessee Valley Authority (TVA) to offer EnergyRight rebates—currently $150–$400 for qualifying heat pumps and $250–$500 for dual-fuel systems. Federal tax credits under the Inflation Reduction Act provide up to 30% of equipment and installation costs (capped at $600 for air conditioners and $2,000 for heat pumps or furnaces) when the unit meets ENERGY STAR® requirements. A certified load calculation and AHRI-matched system documentation are required to claim these incentives.
Will a new high-efficiency unit work with my existing ductwork, or will that need replacement too?
Most homes can keep their current ductwork, but high-efficiency systems deliver higher airflow and tighter temperature control, so the ducts must be properly sized, sealed, and insulated. During our in-home assessment we perform a Manual D duct analysis; if leaks exceed 10% of total airflow or static pressure is too high, we’ll recommend sealing, minor modifications, or in rare cases full replacement. Addressing duct issues can boost system efficiency an additional 10–20% and is often necessary to maintain manufacturer warranties.
How long does an HVAC replacement take, and will I be without heating or cooling during the process?
A straightforward swap of an outdoor condenser, indoor coil, and furnace or air handler usually takes one full working day. More complex projects involving duct repairs or electrical panel upgrades can take 1½–2 days. You’ll typically be without heating or cooling for 4–8 hours on the main installation day while the old equipment is removed and the refrigerant lines are reconnected, but we schedule installations to minimize discomfort and can provide temporary portable units on extreme-weather days.
What maintenance is required to keep a high-efficiency HVAC unit performing at its best?
High-efficiency equipment relies on precise airflow and refrigerant charge, so routine care is critical. We recommend: (1) changing or cleaning air filters every 30–90 days; (2) scheduling a professional tune-up each spring for cooling and each fall for heating, where we check refrigerant levels, clean coils, calibrate thermostats, and inspect electrical components; (3) keeping the outdoor unit free of leaves and debris in Knoxville’s pollen-heavy seasons; and (4) enrolling in our preventive maintenance plan, which includes priority service and extends manufacturer warranties up to 12 years.