HVAC Unit Replacement

HVAC Unit Replacement | Heating and Air Conditioning | Sweetwater

When the sticky Sweetwater summers feel relentless or a sudden cold snap hits the valley, you don’t have time for a tired, unreliable HVAC system. HEP’s certified technicians make replacing your outdated unit simple, fast, and stress-free. We start with a no-pressure assessment, match you with the right high-efficiency equipment for your home’s size and budget, and handle every detail of the installation—right down to hauling away the old system. Most replacements are completed in a single day, so you can go to bed that night enjoying quieter operation, balanced airflow, and noticeably lower energy bills.

Customers say working with HEP feels like calling a neighbor, and that’s exactly what we aim for. You’ll get clear, upfront pricing, flexible financing options, and workmanship backed by our rock-solid satisfaction guarantee. Whether your unit failed today or you’re just ready to upgrade before the next heat wave, let HEP restore the comfort and peace of mind your Sweetwater home deserves—24 hours a day, 7 days a week, all year long.

What our customers say

The tech showed up in the timeframe they promised. Curteous, friendly service. He dug around in his truck to find as many coupons as he could for me. The salesperson showed up shortly after as I needed a new HVAC unit. The install team called the next morning in the timeframe promised to let me know they'd be there shortly. Everything was checked to make sure it was working properly before they left. All trash and mess and old equipment was hauled away. HEP isn't the cheapest in town but I've dealt with the cheapest and prefer to get service I can trust for a little more. All options were explained to me with their recommendations so I felt free to decline their suggestion if I chose.

Dani

I am writing you to let you know how well your company was represented today. Your dispatch sent two techs to our home to investigate our HVAC problem. I was impressed with their knowledge and relaxed manor. They quickly determined the issues and presented me with the options. They did not try to rush me or rush through the service call. This time of year, I know you are in high demand. I had just paid our annual maintenance contract with our current service company. We have been using them for a number of years. Our downstairs HVAC system started acting up Saturday evening. Back in February the tech added 2 pounds of Freon to the downstairs unit and said I needed a $450.00 leak check, and he would have the office call and schedule it. They did not. That was the 2nd time they failed to follow up within the last 2 years. Then on the current service call, the tech told me my compressor was most likely bad, “it had open windings”, and it needed to be replaced. He might be able to get it to work briefly, but that would be wasting money. The ball park price for installing another compressor would be around $1800. He would have the office contact me with the actual price. Two days later, and we had not heard from them. Meantime, we had no HVAC downstairs. I decided to call another service provider. An internet search brought your listing up. That and your current TV ad campaign made me decide to give your company a try. Your techs were able to identify the problem as a defective start capacitor and a weak run capacitor. Your techs made a great first impression for your company. I feel they went above and beyond what they had to do. After the compressor started running the pressures were all in the normal ranges which indicates that if I have a leak it is most likely very small. I have decided to go with your company as our HVAC service provider. It will be up to the future techs that your dispatch sends to keep my business. If they are as nice and helpful as those today were, then I’m sure we will do fine together.

Steve C.

HEP has been wonderful. I created an electrical problem which when I call HEP they sent out a tech who fixed it and then looked at my heating unit. I have known for sometime that the unit needed to be replaced. Doug was kind enough to evaluate the current system and at his suggestion I asked for a salesman to meet with me. He was kind enough to get the salesman here the same day and I purchased a unit that they are installing now. It has been like clockwork, each piece of the puzzle coming together. HEP you have a great team that knows how to work in sync. Thank you so much.

Priscilla J.

I moved to Knoxville almost two years ago and have used HEP for all of my plumbing and HVAC needs including replacement of my water service line and my entire plumbing system. The latest project was the replacement of my existing aged electric heat pump with a Trane split AC and gas heating unit. The final product was a five star installation; however, they had to come back to make some major final adjustments. Their employees are always courteous and professional. I will continue to use HEP for all of my needs.

George F.

I had purchased a Service Contract through HEP and I called for a A/C Service. When the technician arrived, he explained his process and what to expect of the service. Once the service was completed, I was informed on the status of my A/C Unit with no intentional try to upsell. No Pressure, just friendly service.

Troy O.

We had an appointment for a maintenance check up for a Friday afternoon with no specific time. Hep called ahead before coming. We were not ready for them to stop by and the service man politely asked for a time and showed up exactly when I asked him to. My husband had a lot of questions about our new heating system and the serviceman politely and patiently answered them all.

Amanda S.

I have a maintenance agreement with HEP for my heating, air conditioning, and plumbing. The technician was very professional and efficient. He made sure to contact us with his arrival time.

D B.

We got a new Trane HVAC system and love it! Art and Chico were very professional! Thank you HEP you are the best.😊

Debra A.

This review was written by Bennie Hawkins ...........I have a maintenance agreement with HEP for my heating, air conditioning, and plumbing. It was time for my semi-annual check in September to make sure the heating was working properly. The maintenance man was prompt, courteous, and provided excellent service. He explained everything he was doing, was informative, and was very helpful. I wouldn't hesitate to call HEP for service when needed and would highly recommend them.

Dawn H.

I use HEP for my HVAC units and have been very satisfied with their service. One of their service technicians, Doug, recently serviced one of the units. He immediately diagnosed the problem, ordered a new part, and installed the new motor the next day, just like he said we would do. Highly recommend HEP.

Lou K.

Why HVAC Unit Replacement Matters for Sweetwater Homes and Businesses

Sweetwater is known for its humid summers and chilly winters, creating year-round demand for dependable indoor comfort. When an aging heating and air conditioning system struggles, energy bills spike, temperatures fluctuate, and indoor air quality drops. At the center of reliable comfort lies a well-sized, properly installed HVAC unit. HEP specializes in complete HVAC unit replacement, ensuring that each Sweetwater property gains an efficient system tailored to local climate demands and the unique layout of every residence or commercial site.

Common Comfort Challenges in Sweetwater

Rapid temperature swings between afternoon heat and cool evenings
Elevated humidity leading to excess indoor moisture
Allergens such as pollen and dust infiltrating older ductwork
Increased energy consumption caused by outdated compressors and blowers

A comprehensive replacement performed by HEP mitigates these challenges by introducing modern technology, precise air distribution, and smart controls, resulting in stable indoor temperatures and healthier air.

Indicators That It’s Time to Replace an HVAC Unit

Escalating Utility Bills

When a compressor runs longer to reach the thermostat setting, electricity usage climbs. Replacing a system that operates below its rated efficiency instantly stops the silent drain on monthly budgets.

Frequent Repairs and Downtime

Multiple service calls within a single cooling or heating season signify deeper mechanical deterioration. At a certain point, investing in new equipment becomes more cost-effective and far less disruptive than patching old components.

Uneven Heating or Cooling Zones

Rooms that feel stuffy in summer or chilly in winter often point to diminished airflow, undersized ductwork, or outdated blower technology. A holistic replacement allows HEP technicians to correct airflow imbalances and calibrate the new unit for optimal zoning.

Excessive Humidity or Dryness

Achieving the right humidity level relies on the refrigerant cycle and accurate airflow. When coils corrode and insulation degrades, moisture control fades. A replacement introduces advanced coil materials and integrated humidification management.

Noisy Operation

Rattling air handlers, screeching fan belts, and loud outdoor condensers are signs of aging parts. Modern variable-speed motors and insulated cabinets drastically reduce operational noise.

How HEP Approaches HVAC Unit Replacement in Sweetwater

Detailed Load Calculation

HEP follows Manual J load calculations rather than square-footage shortcuts. By analyzing window orientation, insulation R-values, air infiltration rates, and occupancy patterns, the team determines precise heating and cooling loads for Sweetwater’s microclimates.

System Selection Tailored to Sweetwater’s Climate Zone

High-SEER air conditioners or heat pumps for humid summers
Dual-fuel systems pairing electric heat pumps with gas furnaces for cool, damp winters
Variable-capacity compressors that throttle output according to outdoor temperature fluctuations

Ductwork Evaluation and Modification

Replacing a unit without addressing duct restrictions undermines efficiency. HEP inspects plenums, elbows, and diffuser locations, recommending repairs or redesigns to ensure balanced static pressure.

Indoor Air Quality Integration

During replacement, HEP offers optional enhancements such as:

MERV 13+ filtration for pollen and dust
UV-C germicidal lights for biological growth prevention
Energy recovery ventilators (ERVs) for fresh air introduction without energy waste

Start-Up, Testing, and Commissioning

A freshly installed HVAC unit undergoes a full commissioning protocol:

Refrigerant charge verification
Static pressure measurement
Airflow balancing across all registers
Thermostat calibration and control logic testing

These steps guarantee that the manufacturer’s efficiency ratings translate into real-world Sweetwater performance.

Benefits of an HEP HVAC Unit Replacement

Enhanced Comfort

Variable-speed blowers and staged compressors deliver more consistent supply air temperatures. Occupants feel steady comfort without the short cycling or temperature swings common in older units.

Energy Efficiency and Sustainability

Modern HVAC equipment reaches SEER and HSPF ratings far above legacy systems. Lower energy consumption shrinks utility bills and reduces each building’s carbon footprint.

Improved Indoor Air Quality

Integrated filtration, humidity control, and ventilation combat allergens, volatile organic compounds (VOCs), and stale air that can accumulate inside well-sealed Sweetwater homes.

Long-Term Reliability

Newer systems manufactured with corrosion-resistant components and inverter technology extend operational life. Coupled with HEP’s precise installation, homeowners enjoy years of dependable service.

Smart Controls and Connectivity

Wi-Fi thermostats and equipment monitoring empower users to adjust settings remotely, track energy usage, and receive maintenance alerts before issues escalate.

Key Components Replaced During an HVAC Upgrade

Outdoor Condensing Unit

At the heart of cooling (and heating, in heat pump mode), the condenser houses the compressor, fan, and coil. Swapping an R-22 refrigerant model for an R-410A or R-454B unit boosts environmental compatibility and efficiency.

Indoor Evaporator Coil

A new coil ensures correct refrigerant metering and maximizes heat transfer. Proper coil sizing with a matching metering device prevents performance bottlenecks and coil icing.

Furnace or Air Handler

Traditional gas furnaces reach AFUE ratings of 95% or higher
Electric air handlers paired with heat pumps feature ECM-style motors for low-watt modulation

Thermostat and Control Wiring

HEP replaces outdated mercury or single-stage thermostats with multi-stage, programmable, or smart models, aligning control logic with the variable-capacity equipment.

Duct Sealing Materials

Metallic tapes, mastic sealants, and insulation wraps eliminate leakage points, safeguarding the energy savings promised by new equipment.

The Step-By-Step Replacement Process with HEP

1. On-Site Assessment

A certified technician evaluates existing equipment, examines return and supply pathways, and documents heat gain factors unique to Sweetwater—sun exposure, attic insulation thickness, and orientation.

2. Load Calculation and Proposal

Using data gathered, HEP engineers model several replacement scenarios, comparing efficiencies, capacities, and potential IAQ upgrades. Homeowners receive a clear roadmap outlining component choices.

3. Scheduling and Preparation

The installation crew plans staging areas, reviews electrical panel capacity, and arranges for any crane or lift equipment required for rooftop or tightly spaced condensers.

4. Safe Removal of Old Equipment

Technicians recover refrigerant per EPA regulations, dismantle air handlers, and disconnect gas, electrical, and condensate lines, disposing of materials responsibly.

5. Installing the New System

Setting and leveling the outdoor unit
Assembling or replacing line sets with proper insulation
Positioning the indoor coil and sealing it to the supply plenum
Upgrading the thermostat and verifying low-voltage wiring connections

6. Duct and Airflow Optimization

Register dampers are adjusted, flexible duct kinks straightened, and insulation added where necessary to maintain consistent airflow.

7. Charging, Testing, and Commissioning

Final refrigerant adjustments follow manufacturer superheat/subcool charts. Supply and return temperature splits confirm efficient heat absorption and rejection cycles.

8. Homeowner Orientation

Residents receive a walk-through of thermostat features, filter change guidelines, and maintenance intervals to preserve warranty coverage.

Energy Efficiency Standards Impacting Sweetwater HVAC Replacements

SEER2 and EER2 Ratings

The latest efficiency metrics account for higher external static pressures encountered in real installations. HEP helps Sweetwater property owners choose equipment surpassing the regional minimums, ensuring compliance and future-proof performance.

ENERGY STAR Certification

Selecting ENERGY STAR-labeled systems helps qualify buildings for certain utility incentives and signifies that the equipment meets strict efficiency criteria verified by third-party testing.

Refrigerant Transitions

With phasedowns of high-GWP refrigerants, HEP offers units that use eco-friendlier alternatives. Future service compatibility is considered so homeowners avoid premature refrigerant obsolescence.

Optimizing Air Distribution During Replacement

Balancing Static Pressure

Undersized returns or restrictive grills can starve even the best equipment. As part of the replacement, HEP measures total external static pressure, resizing duct sections or adding returns where needed.

Zoning Opportunities

By installing motorized dampers and multiple thermostats, different areas of a home maintain individualized comfort levels, minimizing energy waste in seldom-used spaces.

Ventilation Upgrades

ERVs and dedicated outdoor air systems (DOAS) deliver fresh air while conserving thermal energy, addressing Sweetwater’s humidity without burdening the main HVAC unit.

Material Choices for Longevity in Sweetwater’s Climate

Corrosion-Resistant Coils

Aluminum or epoxy-coated coils survive the high humidity and potential airborne contaminants prevalent in Sweetwater, prolonging system life.

High-Grade Insulated Line Sets

Thick UV-resistant insulation keeps refrigerant temperatures stable, preventing condensation on hot summer days.

Durable Furnace Heat Exchangers

Stainless steel or aluminized steel heat exchangers resist thermal fatigue and moisture corrosion, vital for areas with variable winter temperatures.

Smart Thermostat Advantages After Replacement

Learning Algorithms

Adaptive controls analyze occupant behavior and outdoor weather patterns, adjusting setpoints automatically for optimal efficiency.

Remote Diagnostics

Connected systems send performance data that can detect anomalies early, enabling proactive maintenance instead of reactive repairs.

Integration with Home Automation

Compatibility with voice assistants, lighting controls, and security systems unlocks whole-home efficiency benefits, streamlining daily routines.

Indoor Air Quality Add-Ons During HVAC Replacement

Advanced Filtration

Upgrading to media cabinets that support deep-pleated filters removes a higher percentage of airborne particulates with minimal airflow resistance.

UV-C Light Systems

Installed within the supply plenum, UV-C lamps neutralize mold spores and bacteria, maintaining coil cleanliness and preventing microbial odors.

Integrated Humidification or Dehumidification

Whole-house humidifiers protect wood flooring and furniture in dry winters, while dedicated dehumidifiers maintain optimal moisture during Sweetwater’s muggy summers.

Post-Installation Maintenance Essentials

Seasonal Tune-Ups

Preventive maintenance each spring and fall keeps refrigerant charge, burners, and electrical components operating at peak levels, extending the life of the new unit.

Filter Replacement Schedule

Depending on filter type and household conditions, media should be replaced every one to six months to maintain airflow and indoor air purity.

Outdoor Unit Care

Clearing vegetation, washing coils with approved cleaners, and ensuring proper drainage prevent airflow blockages and corrosion.

Thermostat Software Updates

Periodic firmware upgrades improve compatibility with utility demand-response programs and strengthen system cybersecurity.

Sustainability and Environmental Responsibility in HVAC Replacement

Reduced Carbon Emissions

Replacing an outdated 10-SEER system with a 16-SEER or higher unit cuts electricity usage, lowering greenhouse gas emissions generated by power plants.

Responsible Refrigerant Management

HEP adheres to EPA guidelines for refrigerant recovery, recycling, and documentation, safeguarding the atmosphere from ozone-depleting substances.

Long-Life Components

Using durable materials and proper installation techniques extends equipment lifespan, reducing waste in landfills and conserving raw materials.

Tailoring Commercial HVAC Replacement for Sweetwater Businesses

Load Diversity Analysis

Office buildings, retail stores, and light manufacturing spaces possess distinct occupancy schedules and heat loads. HEP performs a load diversity study to design systems that adapt to fluctuating demand without oversizing.

Rooftop Unit (RTU) Upgrades

Modern RTUs feature variable-air-volume fans, economizers, and direct digital controls (DDC) that integrate with building management systems (BMS) for granular energy monitoring.

Ventilation Compliance

ASHRAE 62.1 requirements dictate fresh air volumes for occupant health. During replacement, HEP ensures that the new equipment meets or exceeds ventilation codes.

Noise Mitigation

Commercial installations near office suites or classrooms benefit from acoustic dampening and vibration isolators, maintaining a productive environment.

Boosting Property Value Through HVAC Replacement

In Sweetwater’s competitive real estate market, updated heating and air conditioning equipment signals care and efficiency to prospective buyers. A documented HEP replacement becomes a persuasive selling point, demonstrating lower operating costs and reduced maintenance worries.

Energy Certifications

Homes equipped with high-efficiency HVAC systems may qualify for energy-efficient mortgages (EEMs) and certifications that attract environmentally conscious buyers.

Warranty Transferability

Manufacturer and labor warranties usually transfer to new owners, adding confidence and perceived value to the property.

Preparing for an HVAC Replacement Project

Clear access pathways for installers by moving furniture and fragile items
Secure pets to minimize disruptions during the installation period
Notify neighbors if crane operations or brief utility interruptions are necessary
Review insulation levels and address attic or crawlspace deficiencies to complement the new HVAC system

By taking these steps before the HEP crew arrives, homeowners accelerate the installation timeline and ensure optimal system performance from day one.

The Impact of Proper Sizing on Comfort and Efficiency

Oversized units cycle on and off rapidly, failing to dehumidify and leading to temperature spikes. Undersized systems run continuously, wearing out components and still missing setpoints. HEP’s rigorous sizing process eliminates these pitfalls, providing balanced comfort and energy savings.

The Role of Manual S and Manual D

Manual S matches equipment capacity to calculated loads
Manual D designs duct systems that support required airflow with minimal resistance

Following these ACCA standards is central to HEP’s installation philosophy, delivering tangible results in real Sweetwater homes.

The Future of HVAC Technology and Adaptability

Variable Refrigerant Flow (VRF) Systems

Although more common in commercial arenas, VRF technology is gaining traction in upscale residential projects. Its ability to heat and cool different zones simultaneously offers unparalleled flexibility.

Heat Pump Advancements

Cold-climate heat pumps equipped with enhanced vapor injection (EVI) compressors maintain capacity even when outdoor temperatures drop below freezing, reducing reliance on backup heat sources.

Synthetic Refrigerants

Next-generation low-GWP refrigerants promise improved efficiency and environmental stewardship. HEP monitors these developments to ensure today’s installations accommodate tomorrow’s refrigerant standards.

Comfort Isn’t a Luxury—It’s a Necessity in Sweetwater

A reliable, efficient HVAC system directly influences health, productivity, and peace of mind. HEP’s comprehensive HVAC unit replacement service empowers Sweetwater residents and businesses to reclaim stable indoor environments, reduce energy consumption, and prepare their properties for the future of climate control.

Areas We Serve

Alcoa Allardt Altamont Andersonville Apison Athens Bean Station Beersheba Springs Belvidere Benton Birchwood Blaine Blountville Bluff City Briceville Bristol Calhoun Caryville Charleston Chattanooga Church Hill Clairfield Cleveland Clinton Coalmont Collegedale Cookeville Copperhill Corryton Cosby Cowan Crab Orchard Crossville Cumberland Gap Dandridge Dayton Decatur Decherd Deer Lodge Delano Ducktown Duff Dunlap Elizabethton Elora Englewood Erwin Estill Springs Etowah Evensville Farragut Fayetteville Flintville Fountain City Friendsville Gatlinburg Georgetown Grandview Graysville Greenback Greeneville Gruetli-Laager Guild Halls Harriman Harrison Harrogate Heiskell Helenwood Hillsboro Hixson Huntland Huntsville Jacksboro Jamestown Jasper Jefferson City Jellico Johnson City Jonesborough Karns Kelso Kingsport Kingston Knoxville Kodak La Follette Lake City Lancing Lenoir City Lookout Mountain Loudon Louisville Luttrell Lynchburg Madisonville Manchester Maryville Mascot Maynardville McDonald McMinnville Monteagle Monterey Morristown Mountain City Mulberry New Market New Tazewell Newcomb Newport Niota Norris Oak Ridge Oakdale Ocoee Old Fort Oliver Springs Oneida Ooltewah Palmer Pelham Petros Philadelphia Pigeon Forge Pikeville Pioneer Powell Reliance Riceville Robbins Rockford Rockwood Rogersville Rutledge Sale Creek Sequatchie Sevierville Sewanee Seymour Sharps Chapel Shelbyville Signal Mountain Soddy-Daisy South Pittsburg Sparta Speedwell Spring City Strawberry Plains Sunbright Sweetwater Talbott Tazewell Tellico Plains Ten Mile Thorn Hill Townsend Tracy City Tullahoma Turtletown Vonore Walland Wartburg Washburn White Pine Whitwell Winchester Winfield