Heat Pump Services in Lexington, SC

Drive through almost any Midlands subdivision and most of the outdoor units you pass are heat pumps, not plain air conditioners. They cool through a long, humid summer and heat through a short, mild winter with the same equipment. Our heat pump service in Lexington, SC covers the whole life of that system: repairs when it quits, replacement when it's worn out, twice-a-year tune-ups, and service on geothermal units.

How a heat pump heats and cools

A heat pump doesn't burn anything. It uses refrigerant to carry heat from one place to another, the same way an air conditioner does. In summer it pulls heat out of your house and dumps it outdoors. In winter a part called the reversing valve flips the flow, and the unit pulls heat out of the outdoor air, even cold air, and releases it inside.

A few other parts explain most of the questions we get:

• Defrost cycle. In cold, damp weather the outdoor coil frosts over. Every so often the unit briefly switches to cooling mode to melt it, which is why you may see steam and hear a whoosh.
• Backup heat. Electric heat strips in the indoor air handler add heat when the heat pump can't keep up on its own and during defrost. Your thermostat may label this auxiliary heat.
• Emergency heat. A thermostat setting that runs the backup heat alone. It's for when the outdoor unit has failed.

Our heat pump services, from repair to geothermal

Heat pump work here spans the whole system, outdoors and in:

• Outdoor units: compressors, fans, capacitors, contactors, reversing valves and defrost controls
• Indoor air handlers, blowers and backup heat strips
• Refrigerant leak searches and charge checks by weight or subcooling
• Thermostat setup for auxiliary, emergency and dual-fuel heat
• Twice-a-year tune-ups, replacements and geothermal loops

Heat pump repair

Blowing cool air in winter, iced up and not defrosting, stuck in one mode, or running nonstop: our heat pump repair page covers defrost boards, reversing valves, capacitors, compressors and heat strips.

Heat pump installation and replacement

When the system is old, uses discontinued R-22 refrigerant or keeps breaking, see heat pump installation for sizing, variable-speed and dual-fuel options, and what changed with the newer refrigerants.

Geothermal heat pumps

Ground-source systems trade outdoor air for buried water loops. Our geothermal heat pump page explains how we service existing units and plan replacements.

Ductless mini-splits are heat pumps as well; they're covered under ductless mini-split service. Manufactured homes often run a packaged heat pump, which we handle through our mobile home HVAC work.

Warning signs, and how a heat pump service call goes

Manufacturer guidance is a good yardstick: auxiliary heat that stays on for an hour or more when it's above about 40 degrees outside usually means the heat pump itself isn't carrying the load. Other signs we get called for are air from the vents that feels lukewarm in January, a coil that stays caked in ice instead of clearing during defrost, grinding or banging from the outdoor unit, a January power bill far above the last one, and a house that feels clammy in summer even though it reaches the setpoint.

Local conditions cause many of them. Spring pine pollen mats the outdoor coil, summer storms take out capacitors and boards, and attic air handlers in newer two-story homes cook through July.

What happens on the visit

1. Listen and look. Thermostat mode, the aux or EM light, and what the outdoor unit is doing.
2. Electrical tests. Capacitor, contactor and compressor amp draw against the nameplate.
3. Refrigerant readings. Pressures, superheat and subcooling, with a leak search if the charge is off.
4. Defrost and reversing valve. Forced defrost test and a check that the valve shifts cleanly.
5. Backup heat and airflow. Strip amp draw, filter, blower and supply temperature.
6. Options in writing. Repair or replace, with the trade-offs, before work starts.

Is a heat pump the right fit for a Lexington home?

For most houses here, yes. Climate is the main reason. Lexington is officially hot-humid territory, with cooling that runs for months and winter nights are usually above freezing, which is exactly the range where a heat pump does its best work. The trade-offs show up on the few nights each winter when temperatures fall into the 20s. A single-speed heat pump loses capacity and calls on the heat strips, and the power bill shows it.

There are three common ways to handle that:

1. Size and set it up right. A correctly sized heat pump with properly staged backup heat covers cold nights without running the strips more than it needs to.
2. Go variable-speed. These models ramp up in cold weather and slow down in mild weather, and they remove more humidity in summer.
3. Pair it with gas. If your home has gas or propane, a dual-fuel system lets a furnace carry the coldest hours.

The electric or gas utility you're on, the state of your ducts and how warm you like the air coming from the vents all factor in. We'll walk through those with you.

Keeping a heat pump healthy in both seasons

Because a heat pump works twelve months a year, it benefits from two checkups: one in spring before cooling season and one in fall before heating season. Both are part of our maintenance plan, along with priority scheduling and member repair discounts; the details are on the phone.

Between visits:

• Rinse spring pollen and fall leaves off the outdoor coil, gently, with the power off
• Trim shrubs back and keep pine straw from piling against the cabinet
• Change the indoor filter on schedule
• During frost, let the defrost cycle do its job; never chip ice off or pour hot water on the coil

What drives the cost of heat pump service?

• System type. Split systems, packaged units, mini-splits and geothermal units each use different parts.
• Refrigerant. Older R-22 systems rely on reclaimed refrigerant only. Newer systems use R-410A or the A2L refrigerants required on new equipment since 2025, and handling any of them is regulated under the EPA's Section 608 program.
• Age and part availability. Defrost boards and motors for older models may need ordering.
• Access. Attic air handlers and tight side yards take more time.
• Timing. After-hours calls cost more than daytime appointments.
• Leak repairs. Finding and fixing a leak before recharging adds time but keeps you from paying for refrigerant twice.
• Matching parts. An indoor coil or air handler may need replacing alongside a new outdoor unit so the pair is rated together.

Replacement estimates are free and itemized, and financing is available on new systems.

We cover Cayce, Oak Grove, Irmo and the rest of Lexington County.

Refrigerant rules, licensing and why homeowners call us

EPA 608, SEER2 and South Carolina licensing

Anyone who connects gauges to a heat pump must hold EPA Section 608 certification, and venting refrigerant on purpose is illegal. Federal minimums for a new split heat pump are 14.3 SEER2 for cooling and 7.5 HSPF2 for heating, and new equipment since 2025 uses A2L refrigerants such as R-454B or R-32. Contractors are licensed through SC LLR, where you can look any of them up; we are fully licensed and insured. A replacement also needs a permit from your town or county.

Why Puzzled Comfort Solutions for heat pumps

Heat pumps are most of what we see, summer and winter, so the cold-night calls and the July calls land on the same people. The company is owner-operated: Chong Kim answers for the work and explains the readings himself. Reviewers mention a refrigerant leak we found after another company missed it, and repair-or-replace options laid out without pressure. When replacement wins, we're a Bryant-authorized dealer with NATE certification, the estimate is free, and equipment is often in place within days. Emergency calls are answered 24/7, and veterans, first responders and school employees get standing discounts.