- HEP Heat and Air
- System Replacements

System Replacements
System Replacements | Heating and Air Conditioning | Greeneville
When Greeneville’s weather swings from crisp mountain mornings to humid summer afternoons, your comfort depends on a reliable system. HEP’s expert technicians specialize in full-scale heating and air conditioning replacements, guiding you from the first assessment to the final thermostat check. We size each unit precisely for your home, upgrade ductwork where needed, and dispose of your old equipment responsibly—so all you notice is the instant, even comfort.
Choose from industry-leading brands backed by long-term warranties and energy-saving technology that can lower utility costs season after season. With transparent, upfront pricing, flexible financing, and 24/7 emergency support, HEP makes it simple to elevate your indoor climate and peace of mind in one seamless visit.
FAQs
How do I know when it’s time to replace my HVAC system rather than repair it?
Most systems in Greeneville last 12–15 years. If your unit is in that age range, needs frequent repairs, suffers refrigerant leaks, or can’t keep a steady temperature, replacement is usually more cost-effective. Our technicians provide a cost-benefit analysis comparing the price of repairs over the next five years with the operating savings and warranty coverage a new system would deliver.
What types of heating and air conditioning systems do you install in Greeneville homes?
We replace and install high-efficiency gas furnaces, heat pumps, dual-fuel systems, central air conditioners, and ductless mini-splits from leading manufacturers. Because Greeneville has moderate winters and warm, humid summers, we often recommend variable-speed heat pumps or dual-fuel setups that switch to gas heat only in sub-freezing temperatures for maximum efficiency.
How long does a typical HVAC replacement take from removal to final testing?
For most single-family homes, the entire process is completed in one working day. We start by protecting floors and furniture, then remove the old equipment, inspect and modify the existing ductwork or line sets as needed, set the new indoor and outdoor units, recharge the system, run pressure and leak tests, and finish with a full airflow and thermostat calibration. Larger homes or added duct upgrades may require a second day.
Will a new high-efficiency system really lower my energy bills in Greene County?
Yes. Replacing a 10-SEER air conditioner installed in the early 2000s with a current 16–18 SEER2 model can cut summer cooling costs by up to 40%. Likewise, an 80% AFUE furnace upgraded to a 96% condensing furnace can save 15–20% on winter heating. Factor in fewer repair bills and modern smart thermostat controls, homeowners typically see payback in 3–5 years.
Do I need to replace my ductwork when I install a new HVAC unit?
Not always. We perform a duct leakage and static pressure test during the estimate. If the ducts are in good shape and sized correctly, we can reuse them. However, if they’re undersized, badly insulated, or leaking more than 20%, we’ll recommend sealing or replacement to ensure your new system reaches its rated efficiency and doesn’t fail prematurely.
Are there local rebates, tax credits, or financing options available for system replacements in Greeneville?
Absolutely. TVA’s EnergyRight program offers rebates for qualifying heat pumps, and federal Inflation Reduction Act tax credits cover up to 30% of the cost (maximum $2,000) for high-efficiency heat pumps and furnaces installed after 2023. We also partner with lending institutions to provide zero-down, low-interest financing plans ranging from 12 to 120 months, subject to credit approval.