- HEP Heat and Air
- NATE-certified Technicians

NATE-certified Technicians
NATE-certified Technicians | HVAC Unit Replacement | Heating and Air Conditioning | Erwin
When the summer swelter or winter chill in Erwin puts your comfort to the test, HEP’s NATE-certified technicians are ready to swap out that tired, energy-guzzling system for a high-efficiency upgrade. Our specialists diagnose your home’s unique airflow needs, recommend right-sized equipment, and handle every detail of your HVAC unit replacement—from safe removal of the old unit to precise installation, calibration, and cleanup. Because we stock industry-leading brands and parts on our trucks, most replacements are completed in a single visit, restoring crisp, even temperatures before your coffee cools.
Homeowners across Unicoi County trust HEP not only for technical expertise, but for the courtesy and transparency that turn a stressful breakdown into a surprisingly smooth experience. Expect upfront pricing, financing options, and clear explanations of SEER ratings, warranty terms, and smart-home integrations, all delivered by a crew that treats your house like their own. Breathe easier, save on utility bills, and enjoy year-round peace of mind—call HEP today and let Erwin’s most trusted comfort pros handle your next HVAC unit replacement.
FAQs
Why should I choose NATE-certified technicians for my HVAC replacement in Erwin?
NATE (North American Technician Excellence) certification is the industry’s gold standard for technical proficiency. Our NATE-certified technicians have passed rigorous, specialty-specific exams that prove they can size, install, and commission new equipment correctly the first time. This is especially important in Erwin, where our mountain climate demands precise load calculations and proper airflow to handle both humid summers and chilly winters. Choosing a NATE-certified pro protects your investment, maximizes system efficiency, upholds manufacturer warranty requirements, and gives you peace of mind that your new system was installed to the highest standards.
How do I know it’s time to replace—rather than repair—my heating and cooling system?
Consider replacement when your system is 10–15 years old, experiences frequent or costly breakdowns, uses the soon-to-be-phased-out R-22 refrigerant, or can no longer keep temperatures consistent throughout your home. Rising utility bills, excessive noise, and visible signs of corrosion or refrigerant leaks are also red flags. During a free in-home assessment, our technicians measure current performance, review repair history, and compare repair costs with the long-term savings a new high-efficiency unit can bring, helping you make an informed decision.
What does the HVAC replacement process involve, and how long will it take?
1) We start with a Manual J load calculation to determine the exact heating and cooling capacity your Erwin home requires. 2) You’ll receive equipment options and an up-front quote. 3) On installation day, we isolate electrical circuits, recover any remaining refrigerant, and remove the old equipment. 4) New indoor and outdoor units, line sets, drain lines, and thermostats are installed to manufacturer specs. 5) We pressure-test and evacuate the system, charge it with refrigerant, and perform a full system start-up. 6) Final airflow balancing and a homeowner walk-through finish the job. Most standard replacements are completed in one day; systems needing duct modifications or IAQ add-ons may take up to two.
How much does an HVAC replacement cost in Erwin, and what factors affect the price?
In the Erwin area, a complete residential HVAC replacement typically runs between $6,500 and $12,000. Key cost drivers include: • System size (measured in tons or BTUs) • Efficiency ratings (SEER2 for cooling, HSPF/AFUE for heating) • Type of system (heat pump, dual-fuel, straight AC with gas furnace, etc.) • Required duct repairs or attic/crawl-space upgrades • Indoor air quality accessories such as UV lights, high-MERV filters, or humidifiers • Permitting fees and electrical upgrades. We always provide a detailed, line-item estimate so you can see exactly where every dollar goes.
Will a new high-efficiency unit really lower my energy bills?
Yes. Replacing a 10-year-old 10-SEER air conditioner with a modern 16-SEER2 model can slash cooling costs by up to 40 percent. High-efficiency heat pumps with variable-speed compressors deliver similar gains during the heating season. Because Erwin’s climate has wide temperature swings, a properly sized, two-stage or variable-speed system runs longer at lower speeds, removing more humidity, reducing temperature swings, and using less electricity. Most homeowners see the new system pay for itself through energy savings and reduced repair costs within 5–8 years. We also help you apply for any TVA or local utility rebates to shorten the payback period even further.
Do you offer warranties or financing for HVAC replacements?
Absolutely. All equipment we install comes with a 10-year manufacturer parts warranty when registered, and we include a 1-year labor warranty at no extra charge. Extended labor coverage up to 10 years is available. For budgeting convenience, we partner with trusted lenders to offer 0% APR financing for up to 12 months or low-interest plans with affordable monthly payments. Our team will guide you through the simple online application process, so you don’t have to delay comfort due to cost.