- HEP Heat and Air
- HVAC Unit Replacement

HVAC 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
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- Commitment to environmentally responsible disposal of outdated units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.