HVAC Unit Replacement

HEP Heat and AirHVAC Unit Replacement

HVAC Unit Replacement | Heating and Air Conditioning | Dunlap

When Dunlap’s damp summers or brisk valley winters start to feel a little too intense, HEP is the crew you can trust to swap out that tired, power-hungry HVAC unit for a high-efficiency system that keeps every room perfectly comfortable. Our certified technicians size your new equipment to the unique square footage and insulation of your home, remove the old unit with care, and install the latest energy-saving technology—often in a single day. You’ll notice the difference immediately on your thermostat, your utility bill, and in the hush of a quieter, smoother-running system.

From transparent, upfront pricing and flexible financing to our iron-clad workmanship warranty, HEP makes the entire replacement process simple and stress-free. We arrive on time, clean up after ourselves, and walk you through every setting so you can master your new comfort zone right away. Ready to upgrade your Dunlap home? Give us a call or schedule online today and discover why your neighbors say, “HEP is on the way!”

What our customers say

Jacob Newman provided excellent customer service after a difficult scheduling issue. We are always happy to use hep when we need our plumbing or hvac services taken care of.
Jeff S. profile photo
Jeff S.
Patrick was quick to assist me with HVAC issues on a Saturday and was willing to work with my 3 decade old unit!
V D. profile photo
V D.
Jacob Newman was prompt, courteous and efficient. He represented HEP and was very knowledgeable about my unit’s issues. I was able to understand the issues and concerns by the way he described the situation. Thank you!
Dana M. profile photo
Dana M.
Patrick McGraw came out and was fantastic. He was very thorough in diagnosing the problem with our HVAC unit, fixed the problem promptly, and the price was very fair. He also offered some very helpful maintenance tips that we can do ourselves to save money in the future, which is much appreciated. Couldn’t have asked for a better service!
Lucas H. profile photo
Lucas H.
I had a new hvac unit installed. John and AJ were exceptional workers. Very professional and did the job very well. Zach the electrician came and installed the surge protector. Amanda at the office was a tremendous help to me. I use HEP services quite often. I have not been disappointed with any services!!!
Terry D. profile photo
Terry D.
Jacob Newman came for the service call and worked with me to get the lowest price possible for a new unit and provided a repair quote that beat the competition. HEP has provided great service through the years.
Saralyn R. profile photo
Saralyn R.
HEP done a great job installing our new A/C unit. I felt sorry for them boys. They came out and installed it during a bad storm so they were determined to get it done. They even had a quality inspector come out after the install to make sure everything was good.
Richard B. profile photo
Richard B.
Stephen Anthony did a great job for us. He quickly diagnosed our HVAC problem and fixed it in a few minutes.
Bruce M. profile photo
Bruce M.
Patrick Mcgraw came out was very friendly and professional he us back up and running for the time being until we decide to replace our Hvac unit. Thanks.
Tom B. profile photo
Tom B.
Steven listened to our concerns about our 2 yr old unit, that we consider new. We had brought our concerns up with previous techs. However, Steven listened and addressed our issues. Thank you, Steven.
Peggy-Lynne C. profile photo
Peggy-Lynne C.

Expert HVAC Unit Replacement in Dunlap

A dependable heating and cooling system is more than a convenience—it is essential to year-round comfort in Dunlap’s variable climate. From sweltering midsummer afternoons to crisp winter mornings, homeowners and businesses rely on properly functioning equipment to maintain consistent indoor temperatures. When an aging system can no longer keep pace, the most effective path forward is a professional HVAC unit replacement. HEP specializes in heating and air conditioning replacement in Dunlap, delivering high-efficiency solutions tailored to local weather conditions, building codes, and energy guidelines.

The Importance of Choosing a Qualified HVAC Contractor

Selecting a knowledgeable contractor directly impacts equipment performance, utility costs, and occupant safety. A certified team like HEP Dunlap brings:

  • Technical expertise in load calculations, ductwork design, and refrigerant management
  • Thorough understanding of Tennessee building codes and permitting requirements
  • Factory training for leading HVAC brands and evolving technology
  • Commitment to environmentally responsible disposal of outdated units

With these qualifications, HEP ensures every hvac unit replacement in Dunlap meets stringent performance standards and provides reliable comfort for many seasons to come.

Signs Your HVAC System Needs Replacement

Gradual performance decline often flies under the radar until a total breakdown occurs. Recognizing early signals can help avoid emergency outages and inflated repair bills:

  • Frequent cycling or extended run times
  • Uneven temperatures between rooms
  • Escalating energy consumption without changes in usage patterns
  • Excessive noise, rattling, or grinding sounds
  • Persistent humidity issues or musty odors
  • Equipment age nearing or exceeding 12–15 years

If two or more of these conditions arise, scheduling a professional inspection with HEP can determine whether targeted repairs or full replacement is the most economical choice.

Why Homeowners in Dunlap Trust HEP for Heating and Air Conditioning Replacement

Local Knowledge of Dunlap’s Climate

The Sequatchie Valley experiences hot, humid summers and cool, occasionally frosty winters. HEP’s technicians understand the seasonal extremes unique to the region and select equipment engineered for wide temperature swings. This focused expertise results in systems that operate efficiently even during peak demand periods.

Licensed Technicians and Proven Methods

HEP Dunlap trains every installer according to current HVAC best practices, including Manual J load calculations, Manual D duct design, and precise refrigerant charge protocols. Adhering to these established procedures:

  • Minimizes energy waste
  • Extends component lifespan
  • Prevents airflow restrictions and pressure imbalances
  • Upholds manufacturer warranty requirements

The HVAC Unit Replacement Process With HEP

In-Depth Home Assessment

Before any hardware is removed, HEP conducts a detailed walkthrough that examines:

  • Square footage, insulation levels, and window orientation
  • Existing ductwork integrity and airflow measurements
  • Electrical capacity and breaker panel condition
  • Combustion venting pathways for fuel-burning appliances

This data guides equipment selection and installation planning, ensuring the new system aligns with the home’s unique characteristics.

Accurate Load Calculations and System Sizing

Oversized or undersized units cause comfort problems, short cycling, and accelerated wear. HEP uses industry-recognized software to compute heating and cooling loads, factoring in:

  • Design temperature differences for Dunlap
  • Solar heat gain coefficients
  • Infiltration rates from windows and doors

Proper sizing supports balanced humidity control, steady temperature regulation, and lower energy bills.

Removal of the Outdated System

Safe decommissioning of an existing HVAC system involves:

  • Recovering refrigerant using EPA-approved equipment
  • Disconnecting electrical and gas lines with proper lockout/tagout procedures
  • Disposing or recycling metal, copper, and electronic components according to environmental guidelines

HEP’s disciplined approach safeguards occupants, pets, and property while preventing refrigerant release into the atmosphere.

Professional Installation of the New Unit

Once the workspace is prepared:

  • Mounting hardware and vibration pads are placed to reduce operational noise
  • Refrigerant lines, condensate drains, and electrical wiring are routed neatly and insulated where appropriate
  • Duct connections are sealed with mastic or UL-rated tape to eliminate leaks
  • Smart thermostats are integrated, enabling precise scheduling and remote adjustments

Testing, Balancing, and Fine-Tuning

After installation, HEP technicians:

  • Verify refrigerant charge via superheat/subcool calculations
  • Measure static pressure to confirm duct performance
  • Adjust gas orifices and air shutter settings for optimal combustion (where applicable)
  • Calibrate thermostat offsets for true temperature readings

A comprehensive start-up checklist guarantees the new equipment operates at peak efficiency from day one.

Types of HVAC Units HEP Replaces and Installs

Central Air Conditioners

Traditional split-system air conditioners remain a popular choice for Dunlap homeowners wanting dedicated cooling paired with a separate furnace. Modern models feature scroll compressors, variable-speed fan motors, and eco-friendly refrigerants.

Heat Pumps

Heat pumps provide both heating and cooling by transferring heat between indoors and outdoors. Advancements in low-ambient technologies allow these systems to extract warmth even when outdoor temperatures dip below freezing, making them ideal for the region’s moderate winters.

Gas Furnaces

For residences with natural gas access, high-efficiency furnaces deliver quick, robust heat. Two-stage and modulating burners adjust flame intensity to match demand, reducing energy use and maintaining consistent indoor temperatures.

Dual-Fuel Hybrid Systems

Combining a heat pump with a gas furnace, dual-fuel setups automatically switch between electric and gas heating based on outdoor temperatures and utility rates. This blended approach maximizes comfort while minimizing operating costs.

Ductless Mini-Splits

Homes without existing ductwork—or rooms needing independent climate control—benefit from ductless systems. Each indoor air handler connects to an outdoor condenser, enabling zoned temperature settings and eliminating duct-related energy losses.

Energy Efficiency and Long-Term Savings

SEER2 and AFUE Ratings Explained

Seasonal Energy Efficiency Ratio 2 (SEER2) measures cooling performance, while Annual Fuel Utilization Efficiency (AFUE) reflects furnace heating efficiency. The higher the rating, the less energy required to achieve desired comfort. Upgrading from an older 10-SEER unit to a 16-SEER2 system can reduce cooling expenses significantly, and replacing an 80% AFUE furnace with a 95% model returns similar savings on winter heating.

Smart Thermostats and Zoning Upgrades

During hvac unit replacement in Dunlap, HEP offers:

  • Programmable thermostats that learn household routines
  • Room-by-room zoning using motorized dampers
  • Wireless sensors for precise temperature feedback

These enhancements prevent unnecessary runtime, balancing comfort and cost-effectiveness.

Indoor Air Quality Improvements During Replacement

Advanced Filtration

High-MERV pleated filters and electronic air cleaners capture pollen, pet dander, and microscopic particulates, reducing allergy triggers and respiratory irritants.

Humidity Control

Integrating whole-house dehumidifiers minimizes mold growth and dust mites during summer, while steam humidifiers alleviate wintertime dryness, safeguarding wood furnishings and preventing static buildup.

Ventilation Enhancements

Energy Recovery Ventilators (ERVs) exchange stale indoor air with fresh outdoor air while transferring heat and moisture, maintaining healthy indoor air quality without sacrificing efficiency.

Protecting Your Investment With Preventive Maintenance

Seasonal Tune-Ups

Biannual inspections align with the change of seasons:

  • Spring: clean condenser coils, check refrigerant pressures, and test capacitors
  • Fall: inspect heat exchangers, verify flue draft, and lubricate blower motors

Filter Management

Replacing or cleaning filters every one to three months preserves airflow and equipment longevity. HEP provides reminders and filter drop-off services to simplify the routine.

System Monitoring Technology

Smart sensors track temperature differentials, humidity levels, and operating cycles. When anomalies arise, predictive maintenance alerts prevent minor issues from escalating into major malfunctions.

Common Misconceptions About HVAC Replacement

Bigger Is Not Always Better

An oversized system cools or heats a space too quickly, failing to run long enough to remove humidity or evenly distribute conditioned air. Proper sizing remains critical for comfort and efficiency.

More Refrigerant Is Not A Fix

Adding refrigerant to compensate for leaks solves the symptom temporarily but ignores the underlying problem. Sealing leaks or replacing the system restores performance while protecting the environment.

DIY Installation Risks

Modern HVAC equipment requires specialized tools, software diagnostics, and code compliance knowledge. Attempting self-installation can void warranties, create unsafe wiring connections, and reduce system lifespan.

Environmental Benefits of Modern HVAC Equipment

Reduced Carbon Footprint

High-efficiency compressors, variable-speed fan motors, and tight duct sealing cut power consumption, lowering greenhouse gas emissions associated with electricity generation.

Responsible Refrigerant Management

Contemporary refrigerants possess lower global warming potential (GWP) than legacy blends. HEP’s certified technicians adhere to EPA regulations when reclaiming or charging refrigerant, preventing ozone depletion and atmospheric release.

Recycling Old Components

Metal housings, copper tubing, and circuit boards are diverted from landfills and processed through certified recycling centers, recovering valuable raw materials and reducing environmental impact.

Preparing Your Dunlap Home for HVAC Replacement

Clearing Work Areas

  • Move furniture, décor, and stored items away from indoor air handlers and return vents
  • Trim shrubbery around outdoor condensers to provide at least 24 inches of clearance
  • Create a clear path from entryways to the installation site to expedite equipment transport

Planning Around Weather

HEP schedules replacement projects during favorable weather windows, minimizing discomfort and safeguarding sensitive materials from rain or excessive heat.

Communicating Special Requirements

Inform technicians about household pets, medical devices requiring climate stability, or any access limitations. This collaboration ensures a smooth, stress-free experience.

Understanding Warranties and Manufacturer Documentation

Parts Coverage

Most new HVAC units include factory parts warranties spanning five to ten years. Registering the equipment promptly with the manufacturer via serial numbers validates this coverage.

Labor Protection

Supplemental labor warranties cover service costs associated with faulty components. These agreements enhance peace of mind by shielding homeowners from unexpected expenditures stemming from manufacturing defects.

Registration Steps

HEP assists clients in submitting necessary documents, including proof of purchase and installation details, ensuring all eligibility criteria are fulfilled.

The Role of Building Codes and Permits in Dunlap HVAC Projects

Permit Acquisition

Replacing heating and air conditioning equipment often requires municipal permits. HEP handles application forms, fees, and scheduling of inspections, streamlining compliance.

Inspection Protocols

Local inspectors verify:

  • Electrical connections and dedicated circuits
  • Combustion ventilation and flue integrity
  • Condensate drainage routing
  • Proper anchoring of outdoor units

Passing inspections confirms the installation meets safety standards and manufacturer guidelines.

Code Compliance Advantage

Adhering to updated codes improves system efficiency, ensures occupant safety, and bolsters property resale value by documenting properly conducted improvements.

Financing Options and Energy Rebates

Utility Incentives

Local utility providers may offer rebates for high-efficiency hvac unit replacement. HEP supplies equipment specifications and verification paperwork, simplifying the application process.

Federal Efficiency Credits

Qualifying systems can reduce federal tax liability through energy credits. HEP tracks current legislation, advising clients on eligible models and documentation requirements.

Streamlined Application Support

From initial rebate forms to final proof-of-installation submissions, HEP’s administrative team manages paperwork, allowing homeowners to focus on enjoying their new, efficient comfort system.

Sound Control and Quiet Operation

Innovations in Compressor Technology

Noise pollution can detract from overall comfort, especially in densely populated neighborhoods. New inverter-driven and variable-speed compressors modulate output smoothly, eliminating the loud start-stop cycles typical of older single-stage models. By running at lower speeds for longer periods, these compressors maintain temperature more evenly while producing a significantly softer operational hum.

Cabinet Insulation and Fan Blade Redesign

Manufacturers now incorporate multi-layer acoustic insulation within outdoor unit cabinets. Advanced fan blades feature swept or serrated edges that disrupt air turbulence, reducing decibel levels without hindering airflow. When HEP installs such equipment, homeowners notice quieter performance during late-night cooling or early-morning heating cycles.

Installation Best Practices for Reduced Vibration

Proper mounting contributes greatly to sound mitigation:

  • Rubber isolation pads absorb mechanical vibrations
  • Rigid stand platforms elevate units above soil, preventing resonance through the foundation
  • Flexible refrigerant line sets minimize transfer of compressor-generated oscillations into interior walls

By combining these techniques with strategic placement away from bedrooms or outdoor gathering spaces, HEP ensures the new HVAC system delivers whisper-quiet comfort alongside high efficiency.

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
HEP Heat and Air
Book Online
(423) 228-7742