HVAC Unit Replacement

HEP HVACHVAC Unit Replacement

HVAC Unit Replacement | Heating and Air Conditioning

When your aging HVAC system starts driving up energy bills or struggling to keep you comfortable, HEP’s certified technicians make replacement effortless. We assess your home’s size, insulation, and airflow, then recommend a perfectly matched, high-efficiency unit that can trim energy costs while delivering whisper-quiet comfort. From removing your old equipment to precise installation and spotless cleanup, we handle every detail so you can simply enjoy a consistently comfortable home.

Every installation comes with transparent, upfront pricing, flexible financing options, and our 100% Satisfaction Guarantee. We partner with top manufacturers to offer reliable heat pumps, furnaces, and hybrid systems—all compatible with smart thermostats for on-the-go control and real-time savings. If you ever have questions, our friendly team is available 24/7, because comfort can’t wait.

Join thousands of East Tennessee homeowners who have swapped drafty rooms for dependable climate control. Pair your new unit with HEP’s Home Maintenance Plan for priority service, annual tune-ups, and exclusive discounts that protect your investment year after year. Ready to upgrade? One call and HEP is on the way!

What our customers say

Justin came out to my home on a Sunday to fix my air conditioner unit. The previous people I called to fix a blower motor made a lot of mistakes (Grissom Heat & Air) that caused a huge leak into my ceiling and he took the time to explain the mistakes that were made, and what needed to be done to fix them. I greatly appreciate Justin for taking the time to go over everything so I could understand it. He did a thorough job and I will definitely recommend Justin and HEP to anyone needing help with hvac or plumbing needs. Thank you!
Becky G. profile photo
Becky G.
Called in because my A/C unit would not operate. Had a tech out the next day. Nathan was very friendly, and had the issue diagnosed and repaired incredibly fast.
Erika K. profile photo
Erika K.
Awesome job Justin! Found issues on hvac needing attention to keep us cool and going. Hep will keep my business in the future. 5 star service and technicians!!!
Joe L. profile photo
Joe L.
The installation team Matt and Jacob B was very professional and really helpful in sharing information on the installation. This made our experience much more pleasurable considering the situation. I would recommend this Company and certainly recommend that Matt and Jacob B install AC in any situation. Highly recommended them for reliability, performance, professionalism, and customer satisfaction.
Byron F. profile photo
Byron F.
Nathan does great work with the HVAC! He has been a wonderful help to our family.
Hannah C. profile photo
Hannah C.
Jacob Newman and Ryan Foist did an amazing job with our new HVAC system installation. You should consider yourself luck if you have them on your job.
Dillon M. profile photo
Dillon M.
We had a new HVAC unit installed and Ryan and Doug came out. There were very pleasant to work with. HEP has been great all around!
Anthony S. profile photo
Anthony S.
Josh Butler came out and dis some electrical for me. Did a great job and even helped me with some plumbing questions also. Will be using him again in the future. Also had Justin, HVAC technician come out. Did a great job also. Was very nice and saved me hassle and money
Shane profile photo
Shane
My mother, had a problem with her a/c unit and wanted to leave a review after receiving services from HEP and here's what she had to say.. "I prayed the Lord would send me a seasoned tech ...The Lord sent TOP GUN! Mr Dinardo exemplified 40 plus years of knowledge, expertise, and awesome customer service. He gets an excellent rating of 10/10! Very pleased!" -Mrs Thompson.
Jaqcui H. profile photo
Jaqcui H.
I can’t say enough of how the breast I am with Doug C and Ryan H coming out in the middle of the blizzard and getting this HVAC unit installed. I think there were some extra challenges and they worked until the job was done. Really really really impressed.
Kenneth B. profile photo
Kenneth B.

Professional HVAC Unit Replacement in Tennessee by HEP

When a home or business in Tennessee needs dependable heating and air conditioning, HEP provides comprehensive HVAC unit replacement services that restore comfort and efficiency. Whether a system has reached the end of its lifespan, energy bills have skyrocketed, or uneven temperatures have become the norm, HEP’s certified technicians deliver precise solutions tailored to the region’s unique climate demands. By focusing on high-quality equipment, meticulous installation practices, and ongoing support, the company ensures that each replacement yields long-term performance and peace of mind for property owners across the state.

Why HVAC Unit Replacement Matters in the Volunteer State

Tennessee’s climate ranges from humid summers with soaring temperatures to crisp winters that demand reliable heating. An aging or underperforming HVAC unit struggles to keep pace with these extremes, leading to:

  • Excessive energy consumption and fluctuating utility costs
  • Degraded indoor air quality and elevated humidity levels
  • Frequent breakdowns and costly emergency repairs
  • Inconsistent comfort from room to room

Replacing an outdated system with modern, energy-efficient equipment is a proactive step that secures year-round comfort, reduces environmental impact, and mitigates unexpected interruptions to daily life.

Signs You Need a New Heating or Cooling System

Recognizing the early indicators of unit failure helps homeowners plan a timely replacement with minimal disruption. HEP advises residents to look for:

  • Systems older than 10–15 years that rely on outdated refrigerants
  • Loud or unusual noises such as grinding, rattling, or buzzing
  • Persistent hot or cold spots throughout the building
  • Unexplained spikes in electricity or gas usage
  • Frequent thermostat adjustments without achieving target temperatures
  • Visible corrosion, leaks, or excessive dust accumulation around vents

Acting on these warning signs can prevent sudden system collapse and allow for a measured upgrade under optimal conditions.

Benefits of Choosing HEP for Complete Unit Replacement

Tennessee property owners partner with HEP because the company:

  • Employs NATE-certified technicians versed in the latest HVAC technologies
  • Provides detailed load calculations to match equipment precisely to the home’s needs
  • Handles every phase of replacement, from permitting to post-installation testing
  • Uses manufacturer-approved parts and installation procedures
  • Carries robust guarantees on workmanship and equipment performance

By entrusting the process to HEP, clients receive a seamless experience that maximizes comfort, efficiency, and long-term reliability.

The HEP HVAC Replacement Process

Replacing an entire HVAC unit involves more than simply swapping machines. HEP follows a structured, multi-step procedure designed for safety, performance, and code compliance.

Thorough Assessment and Load Calculation

Technicians begin by inspecting the existing system, evaluating duct integrity, verifying electrical capacities, and gauging insulation levels. Using industry-standard Manual J and Manual S methodologies, they calculate precise heating and cooling loads. This ensures the selected equipment is neither undersized (leading to constant cycling) nor oversized (causing humidity issues and short run times).

Equipment Selection Tailored to Tennessee Climates

After determining the required capacity, HEP recommends units engineered to perform well in high humidity and variable winter temperatures. Available options include:

  • High-efficiency heat pumps for moderate winter heating and powerful summer cooling
  • Dual-fuel systems that combine electric heat pumps with gas furnaces for colder conditions
  • Variable-speed compressors that modulate output to match real-time demand

Clients receive clear explanations of each system’s features, energy ratings, and maintenance considerations.

Removal of the Existing System

The removal phase follows strict safety protocols. Technicians recover refrigerant in accordance with EPA regulations, isolate electrical circuits, and dismantle aging air handlers, condensers, or furnaces. Any soffits or platforms affected by the old unit are repaired or upgraded to support the new equipment.

Precision Installation of the New Unit

Proper installation is the cornerstone of HVAC performance. HEP’s team:

  • Levels and anchors outdoor condensers or heat pumps on hurricane-rated pads
  • Installs vibration isolators and secure hangers for indoor air handlers
  • Replaces or upgrades line sets, drain lines, and electrical wiring as needed
  • Pressurizes refrigerant lines with nitrogen to test for leaks before charging
  • Seals duct transitions with mastic to eliminate energy-wasting air leaks

Each step is documented, and adherence to local codes is verified before commissioning.

Post-Installation Testing and Optimization

Once the new HVAC unit is operational, HEP conducts:

  • Static pressure testing to confirm proper airflow
  • Thermostat calibration for accurate temperature control
  • Combustion analysis on gas furnaces to optimize fuel efficiency
  • Final walk-throughs with homeowners to review filter replacement schedules and system settings

A detailed report summarizing performance metrics and maintenance tips is provided, setting the stage for years of dependable service.

Advanced Technologies Offered by HEP

Modern HVAC equipment incorporates innovations that elevate comfort while conserving energy.

High-Efficiency Heat Pumps

Today's heat pumps deliver heating performance in temperatures down to the mid-teens and achieve impressive SEER2 ratings. Features include:

  • Inverter-driven compressors for whisper-quiet operation
  • Enhanced cold-weather refrigerant cycles
  • Communicating controls that synchronize indoor and outdoor units

These advancements enable Tennessee residents to rely on electric heating longer before auxiliary heat kicks in, lowering winter energy costs.

Variable-Speed Air Conditioners

Variable-speed AC systems adjust output in small increments, maintaining consistent indoor temperatures and reducing humidity. Benefits encompass:

  • Up to 30% less energy consumption compared with single-stage units
  • Reduced temperature swings and fewer on/off cycles
  • Superior moisture removal, crucial during muggy Tennessee summers

HEP’s installers ensure proper duct configuration and thermostat compatibility so homeowners reap the full rewards of variable-speed technology.

Smart Thermostats and Zoning Solutions

By integrating smart thermostats and zoning dampers, HEP enables customized comfort for multi-story homes, finished basements, or sunrooms that traditionally suffer temperature imbalances. Advantages include:

  • Remote temperature adjustments through mobile apps
  • Learning algorithms that adapt schedules to household routines
  • Independent climate control for separate sections of the house

Such intelligent controls further optimize the performance of newly replaced HVAC units.

Indoor Air Quality Enhancements

HEP can pair replacement units with air purification and humidity control accessories:

  • Media or HEPA filters to trap microscopic allergens
  • UV-C germicidal lamps that neutralize bacteria and mold spores
  • Whole-home dehumidifiers designed for humid Tennessee summers
  • Energy recovery ventilators that introduce fresh air while preserving conditioned temperatures

These add-ons create healthier indoor environments and complement modern HVAC efficiency gains.

Unique Challenges of Tennessee Climate

Humid Summers and the Need for Strong Cooling

Tennessee’s average summer relative humidity often exceeds 70%, making air conditioning not just a comfort feature but a health necessity. Proper unit sizing, coil design, and airflow calibration allow HEP replacements to pull excess moisture from the air, preventing mold growth and discomfort.

Chilly Winters and Reliable Heating

Although the state seldom experiences extended sub-zero temperatures, sudden cold snaps demand reliable heat. Dual-fuel systems recommended by HEP automatically switch from efficient heat pump operation to gas furnace backup when the thermostat senses temperatures below a programmed balance point, ensuring continuous warmth without wasting fuel.

Seasonal Allergens and Air Filtration

Pollen counts soar each spring and autumn, aggravating allergies and asthma. New HVAC units equipped with high-MERV filters reduce airborne irritants, and sealed ductwork installed by HEP prevents infiltration of outdoor pollutants. Regular filter changes, demonstrated during installation, further safeguard indoor air quality.

Energy Efficiency and Environmental Stewardship

SEER Ratings and What They Mean

Seasonal Energy Efficiency Ratio (SEER) quantifies cooling efficiency, with higher numbers indicating better performance. Tennessee’s climate makes SEER2 ratings between 15 and 20 ideal. HEP educates homeowners on:

  • Long-term energy savings associated with incremental SEER improvements
  • Diminishing returns beyond certain SEER thresholds given local power rates
  • Federal and state incentives linked to qualifying high-efficiency equipment

Reducing Carbon Footprint Through Modern HVAC

An outdated air conditioner manufactured before 2010 may use refrigerants phased out for environmental reasons. HEP installs systems charged with low-GWP refrigerants and ensures proper disposal or reclamation of old chemicals, reducing greenhouse gas emissions and aligning with sustainable practices.

Lower Utility Bills With Proper Replacement

By addressing duct leaks, installing ECM blower motors, and programming smart thermostats, HEP routinely achieves double-digit percentage reductions in cooling and heating costs. These savings compound year over year, offsetting the initial investment and freeing up household budgets for other priorities.

Maintenance After Replacement

Recommended Maintenance Schedule

A new HVAC system operates best when serviced twice annually—spring for cooling components and fall for heating elements. HEP’s maintenance visits include:

  • Cleaning condenser and evaporator coils
  • Checking refrigerant charge and adjusting as necessary
  • Lubricating motors and tightening electrical connections
  • Flushing condensate lines to prevent water damage

Simple Homeowner Tasks to Extend Life

Property owners can perform several easy tasks between professional tune-ups:

  • Replacing air filters every 30–90 days
  • Keeping outdoor units clear of leaves, grass clippings, and debris
  • Ensuring supply and return vents remain unobstructed by furniture or rugs

Regular attention prevents airflow restrictions that strain compressors and fans.

Professional Tune-Ups by HEP Technicians

During scheduled service appointments, HEP technicians verify system calibration, inspect safety controls, and update firmware on connected thermostats. Early detection of worn capacitors or small refrigerant leaks spares homeowners from emergency outages during peak summer heat or winter cold.

Commonly Replaced Components

Full system replacement generally involves several interconnected parts.

Air Handler

The indoor air handler houses the evaporator coil, blower motor, and control board. Upgrading to a variable-speed blower promotes quieter operation and balanced airflow across multiple floors.

Condenser Unit

Outdoor condensers endure Tennessee’s heat and storms. New models feature:

  • Rust-resistant enclosures
  • Improved coil designs that reject heat more efficiently
  • Sound-dampening fan blades and compressor blankets

Thermostat Upgrades

Modern programmable or smart thermostats provide granular control over temperature setpoints and humidity levels. When installing a new HVAC unit, HEP ensures thermostat compatibility and provides training on advanced scheduling features.

Ductwork Adjustments

Replacement projects present an opportunity to seal joints, add insulation, or modify duct runs for better distribution. Properly sized return air pathways and balanced supply vents are critical to achieving manufacturer-rated efficiencies.

Safety Considerations During HVAC Replacement

Electrical and Refrigerant Handling

Certified technicians employ lockout-tagout procedures and recovery machines to safely disconnect power and reclaim refrigerant. Compliance with OSHA and EPA regulations protects workers, occupants, and the environment.

Proper Ventilation and Combustion Safety

Gas furnaces and water heaters share flue systems in many Tennessee homes. During replacement, HEP assesses vent sizing, drafts, and combustion air sources to prevent carbon monoxide hazards.

Compliance With Tennessee Codes

Municipal codes govern clearances, condensate disposal, and electrical disconnect placement. HEP obtains necessary permits and schedules inspections to verify installations meet or exceed local requirements.

Preparing Your Home for HVAC Replacement Day

Small steps taken before the crew arrives streamline the installation process.

Clearing Access Paths

  • Move vehicles from driveways or garages for equipment delivery
  • Unlock gates or fence panels to the backyard condenser site
  • Remove decorative items or potted plants along work routes

Protecting Valuables and Furniture

  • Cover nearby furniture with sheets to shield against dust
  • Remove wall decorations in hallways where air handlers pass
  • Store fragile items safely away from high-traffic areas

Pet and Family Safety

  • Secure pets in a closed room or at a neighbor’s house
  • Plan activities that keep children away from tools and open panels
  • Inform household members about temporary power or water shut-offs

These preparations help the HEP team work efficiently and return the home to normal operation swiftly.

Long-Term Value of Investing in a New HVAC Unit

A professionally installed, high-efficiency HVAC system is more than a comfort upgrade; it is a strategic investment that yields measurable dividends.

  • Boosting Property Resale Value
    Prospective buyers in Tennessee actively seek homes with updated mechanical systems. A recently replaced unit signals diligent maintenance and lowers future ownership costs, often translating into higher offers.

  • Warranty Advantages
    Manufacturer warranties on new equipment, combined with HEP’s workmanship guarantees, cover major components for years. Proper registration and documented maintenance protect homeowners from unexpected expenses.

  • Peace of Mind Through Reliability
    Knowing that a robust, correctly sized HVAC unit stands ready to tackle scorching afternoon highs and frosty winter mornings allows Tennessee residents to focus on family, work, and recreation rather than emergency service calls.

Areas We Serve

AlcoaAllardtAltamontAndersonvilleApisonAthensBean StationBeersheba SpringsBelvidereBentonBirchwoodBlaineBlountvilleBluff CityBricevilleBristolCalhounCaryvilleCharlestonChattanoogaChurch HillClairfieldClevelandClintonCoalmontCollegedaleCookevilleCopperhillCorrytonCosbyCowanCrab OrchardCrossvilleCumberland GapDandridgeDaytonDecaturDecherdDeer LodgeDelanoDucktownDuffDunlapElizabethtonEloraEnglewoodErwinEstill SpringsEtowahEvensvilleFarragutFayettevilleFlintvilleFountain CityFriendsvilleGatlinburgGeorgetownGrandviewGraysvilleGreenbackGreenevilleGruetli-LaagerGuildHallsHarrimanHarrisonHarrogateHeiskellHelenwoodHillsboroHixsonHuntlandHuntsvilleJacksboroJamestownJasperJefferson CityJellicoJohnson CityJonesboroughKarnsKelsoKingsportKingstonKnoxvilleKodakLa FolletteLake CityLancingLenoir CityLookout MountainLoudonLouisvilleLuttrellLynchburgMadisonvilleManchesterMaryvilleMascotMaynardvilleMcDonaldMcMinnvilleMonteagleMontereyMorristownMountain CityMulberryNew MarketNew TazewellNewcombNewportNiotaNorrisOak RidgeOakdaleOcoeeOld FortOliver SpringsOneidaOoltewahPalmerPelhamPetrosPhiladelphiaPigeon ForgePikevillePioneerPowellRelianceRicevilleRobbinsRockfordRockwoodRogersvilleRutledgeSale CreekSequatchieSeviervilleSewaneeSeymourSharps ChapelShelbyvilleSignal MountainSoddy-DaisySouth PittsburgSpartaSpeedwellSpring CityStrawberry PlainsSunbrightSweetwaterTalbottTazewellTellico PlainsTen MileThorn HillTownsendTracy CityTullahomaTurtletownVonoreWallandWartburgWashburnWhite PineWhitwellWinchesterWinfield
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