HVAC Installation & Replacement in Lexington, SC

When a system is worn out, keeps breaking down or never kept the house comfortable in the first place, replacing it is a big decision. Our HVAC replacement service in Lexington, SC covers the full job: choosing the right type of equipment, sizing it to the house, checking the ducts, pulling the permit, installing it cleanly and showing you how it works. You get options with honest pros and cons, and the choice is yours.

Picking the right type of system

The right setup depends on the fuel available, the house and your priorities.

Air conditioner with a gas furnace

A common choice where natural gas lines exist. The furnace delivers strong heat on the coldest nights, and the AC handles the long cooling season. Rural homes may use propane instead.

Heat pump with an air handler

An all-electric system that heats and cools with one outdoor unit, with electric heat strips as backup for hard freezes. Well suited to the Midlands' mild winters. See heat pump installation.

Dual fuel

A heat pump paired with a gas furnace. The heat pump runs most of the year, and the furnace handles the coldest stretches, when burning gas costs less than running the heat pump.

Packaged units and ductless

Packaged units put everything in one cabinet outdoors, common on manufactured homes and some slab houses. Ductless mini-splits suit additions or homes without ducts.

For a cooling-only replacement, our AC installation page goes into more detail.

What a full replacement includes

A replacement is more than trading one box for another. The job starts with how the house loses and gains heat and ends only when the new system is proven at startup, so the scope reaches past the equipment itself. Depending on the house, it covers:

• A room-by-room load calculation and a look at how each room performs today
• Removal of the old equipment, with refrigerant recovered and the unit hauled off
• The new outdoor unit, indoor coil and air handler or furnace, matched as a rated system
• A new or flushed line set, new disconnect and wiring sized to the equipment
• Duct repairs, sealing or resizing where the test readings call for it
• The permit, startup readings, thermostat setup and help registering the warranty

We install Bryant equipment as an authorized dealer and lay out at least two options when the house allows, such as a single-stage heat pump against a variable-speed one, so you can weigh comfort against upfront cost.

Sizing and design choices that matter in the Midlands

Bigger is not better. An oversized system cools the house quickly and shuts off before it removes enough moisture, leaving rooms cold and clammy. In a hot-humid climate like ours, where the system has to pull water out of the air, that matters a lot.

• Load calculation. The right size comes from the house itself (insulation, windows, orientation, ceiling heights) rather than from the tonnage on the old unit's label.
• Ductwork check. Undersized or leaky ducts can keep a new system from delivering its rated performance. Any duct changes are identified before equipment is ordered; see ductwork.
• Single-stage or variable speed. Variable-speed equipment runs longer at lower output, which helps with humidity and evenness, at a higher upfront cost.
• Efficiency ratings. Since 2023, equipment is rated in SEER2 and HSPF2. South Carolina falls in the DOE Southeast region, where a new split AC below 45,000 Btu/h needs a minimum of 14.3 SEER2 (13.8 at larger sizes), and split heat pumps at least 14.3 SEER2 and 7.5 HSPF2.
• Refrigerant. Beginning in 2025, new residential systems moved from R-410A to lower-GWP A2L refrigerants such as R-454B and R-32, so the indoor coil and outdoor unit generally need to be replaced together.

From first visit to first comfortable night: the install process

1. Assessment and quote. We look at the existing equipment, ducts, electrical service, drainage and how the house is used, then lay out the choices that suit it, each with its trade-offs explained.
2. Ordering and permit. Equipment is sourced, often within days, and a building permit is pulled with the town or county.
3. Removal. Refrigerant in the old system is recovered under EPA Section 608 rules before the equipment is disconnected and hauled away.

4. Setting the new equipment. Outdoor unit on a level pad, indoor unit or furnace in place, with ducts connected and sealed. Attic units get a new condensate line, secondary pan and float switch.
5. Line set and electrical. Copper lines are replaced or cleaned and brazed under a nitrogen purge so no scale forms inside the copper, then pressure tested and pulled into a deep vacuum. Wiring and disconnect are brought up to the new equipment's needs.

6. Startup, walkthrough and cleanup. Charge, airflow and temperatures checked, with gas pressure and combustion tested on furnaces; then we show you the thermostat and filter, go over registration, and leave the work area clean.

Permits, licensing and refrigerant law on a new install

Installing new heating or cooling equipment is permitted work: the permit comes from the building department for your jurisdiction, inside Lexington's town limits or in the unincorporated county, and an inspector checks the electrical, gas, venting and condensate details before the job is closed out. South Carolina requires the installer to hold an HVAC license through SC LLR, which you can verify online in a minute, and our company is fully licensed and insured. Under EPA Section 608 the old refrigerant must be recovered, and the A2L refrigerants in 2025-and-later equipment come with their own handling and leak-detection requirements, one more reason to hire a contractor who installs them routinely.

What goes into the price of a new system?

We give prices after seeing the house, because two Lexington homes of the same size can need very different work. These factors move them:

• System type and fuel. Heat pump, gas furnace with AC, dual fuel, packaged or ductless.
• Capacity and efficiency. Larger equipment and higher SEER2 ratings cost more upfront.
• Single-stage, two-stage or variable speed.
• Ductwork. Sealing, resizing or full replacement.
• Electrical and line sets. A new breaker, disconnect or copper line set when needed.
• Access. Attic and crawlspace installs take more labor.
• Extras. Thermostat upgrades, filtration or a dehumidifier.
• Removal and haul-off. Old equipment, pads and refrigerant recovery are part of the scope.

Tax credits have changed: the One Big Beautiful Bill Act of July 2025 closed out the federal 25C energy credit at the end of 2025, so a system installed in 2026 does not qualify. Check for utility and manufacturer rebates, and talk with a tax professional about your situation. If paying all at once is a strain, HVAC financing spreads it out.

Warranty registration and caring for the new system

Register the equipment with the manufacturer promptly, since many brands offer longer parts coverage when registration is done within a set period after installation. Keep the installation paperwork, model and serial numbers, and maintenance records together.

After that, change the filter on schedule and have the system checked each spring and fall. A regular checkup protects efficiency and helps keep you within the manufacturer's maintenance expectations; our HVAC maintenance plans take care of that. This matters in subdivisions around Red Bank built while 13 SEER was the minimum, and in Irmo, where many early heat pumps are due for an upgrade.

Why replace with Puzzled Comfort Solutions

The reviews that mention replacements describe the same pattern: options laid out with pros and cons, no pressure to buy the biggest system, and new equipment running a few days after the first call, while competing bids promised a week or longer. Puzzled Comfort Solutions is owner-operated, so the person who sizes the system is accountable for how it runs in August. Bryant-authorized and NATE certified, we write the estimate free, and financing helps when the timing is bad. Public school employees get 10% off, and 15% goes to veterans, health care workers, first responders and police.