Most houses around Lexington barely need heat for much of the year. Then a January cold front pushes the overnight low into the 20s, and a system that sat idle since spring has to run for hours at a stretch. Our heating services in Lexington, SC cover that whole range: tracking down why a gas furnace won't light, replacing an electric furnace that keeps tripping its breaker, tuning equipment before the first freeze and getting a gas log set burning cleanly again.
What kind of heat does your home have?
Heating in this part of South Carolina is a mix. Natural gas is available in many neighborhoods, propane tanks are common out in the county, plenty of homes are all-electric, and heat pumps are the most widespread system in the Midlands. The type you have decides what can fail and how we diagnose it.
| System | How it makes heat | Where we see it | What usually fails |
|---|---|---|---|
| Natural gas furnace | Burns gas inside a sealed heat exchanger; a blower moves house air across it | Neighborhoods with gas service | Ignitors, flame sensors, inducer motors, pressure switches |
| Propane furnace | Same burner design, fed from a tank | Rural parts of Lexington, Saluda and Calhoun counties | Same parts, plus regulator and tank supply |
| Electric furnace or air handler with heat strips | Resistance coils glow like a toaster | All-electric homes, apartments, manufactured homes | Burned elements, sequencers, relays, breakers |
| Heat pump | Moves heat from outdoor air indoors; strips back it up | The most common setup across the area | Defrost controls, reversing valves, capacitors |
| Dual fuel | Heat pump for mild weather, gas furnace for cold snaps | Homes with gas service that want a heat pump | Control wiring and changeover settings |
| Gas logs or gas fireplace | Open or sealed flame in a fireplace | Living rooms and dens | Pilots, thermocouples, valves |

Not sure which you have? Look for a gas line with a shutoff valve running into the indoor unit, or a heat pump sticker on the outdoor unit, or just describe what you see when you call.
Failures here follow the calendar. Eight idle months let dust, pollen residue and spider webs settle in burners, so the first cold morning brings a furnace that clicks but never lights. A long freeze pushes heat strips and blower motors past their limits, and propane tanks run low while nobody is watching.
Heater not working? Five checks before you call
Some no-heat calls end with a thermostat setting or a tripped breaker. These checks are safe for anyone:
- Thermostat. Set it to Heat, raise the setpoint a few degrees above room temperature, and replace the batteries if the screen is dim.
- Breaker. Find the breaker labeled furnace, air handler or heat pump. Reset a tripped one once; if it trips again, leave it off.
- Service switch. Most indoor units have a light-style switch on or near the cabinet. Make sure nobody flipped it off.
- Filter. A filter packed with dust can make a furnace overheat and shut itself down.
- Door panel. A safety switch under the blower door keeps the furnace off until the panel is seated.

Don't keep cycling power to a furnace that refuses to light. Repeated attempts can flood the burners with unburned gas or clear the fault code a technician needs.
Gas or carbon monoxide warning
If you smell gas (a rotten-egg odor), leave the house right away without touching light switches, appliances or the thermostat, and call your gas utility or 911 from outside. If a carbon monoxide alarm sounds, get everyone out into fresh air and call 911.Heating services we offer around Lexington
The heating side of our work covers anything in the house that makes warm air or flame:
- Gas, propane and electric furnaces
- Air handlers with heat strips, and the heat pumps they back up
- Dual-fuel changeover controls
- Thermostat wiring and heat staging
- Gas logs and gas fireplaces
Furnace repair
When a gas or electric furnace stops heating, blows cool air or shuts off early, start with furnace repair. It covers ignitors, flame sensors, inducers, blowers, limit switches and control boards.

Furnace installation and replacement
For a furnace near the end of its life, cracked or unsafe, see furnace installation and replacement: sizing, venting, efficiency and dual-fuel pairings. ENERGY STAR suggests weighing replacement once a furnace passes 15 years.
Heating tune-ups
A fall visit catches weak ignitors and dirty flame sensors before a cold night does. Our heating maintenance and tune-up page lists what gets checked on furnaces and heat pumps.
Gas log and gas fireplace repair
Pilots that won't stay lit, logs that won't ignite and sooty glass are covered under gas log and fireplace repair.

If your home heats with a heat pump, the heat pump services hub covers repair, installation and geothermal systems. If the house is cold right now, go straight to no-heat emergency repair; emergency calls are answered 24/7.
How a heating service call runs, start to finish
- Phone triage. Fuel type, symptoms, and whether anyone smells gas or hears a CO alarm. Either of those means leave the house and call 911 or the gas utility first.
- Power and controls. Thermostat call, breaker, service and door switches, and the blinking fault code on the control board.
- Fuel-specific tests. Gas or propane: ignition sequence, flame sensor signal, manifold pressure on a manometer, draft and a flue CO reading. Electric: amp draw on each strip with a clamp meter.
- Airflow. Filter, blower wheel and temperature rise across the furnace against its rating plate.
- Your call. You see the reading or part, hear the options and the price before work starts.
- Re-test. A full heating cycle, warm rooms confirmed, work area cleaned.
Licenses, permits and gas code: how do you pick a heating company you can trust?
Start with the license. South Carolina's Department of Labor, Licensing and Regulation (LLR) licenses HVAC contractors, and its website lets you look one up before anyone opens a gas appliance in your house. Puzzled Comfort Solutions is fully licensed and insured.
On the first visit, expect to see the failed part or the reading behind the diagnosis, and no push toward a new system when a repair will do. A replacement quote should rest on a load calculation, not the old unit's size, and say whether a permit will be pulled. The town or county building department issues it, and inspectors check gas piping and flue connections against the fuel gas code South Carolina adopts. Heat pump work adds EPA Section 608 rules for refrigerant handling.
What affects the cost of heating repair or replacement
Pricing comes after diagnosis. These things drive it up or down:
- Fuel and system type. Gas, propane, electric strips and heat pumps use different parts and take different amounts of time to test.
- Age and part availability. Parts for older furnaces may need to be ordered or replaced with a universal equivalent.
- Access. A furnace in a hall closet is quicker to work on than an air handler in a hot attic or a unit under a low crawlspace.
- Timing. Nights, weekends and holiday cold snaps cost more than a scheduled weekday.
- Venting, gas piping and ductwork. Replacements sometimes need vent, gas line or duct changes, plus a permit.
- Safety findings. A cracked heat exchanger or rusted-through vent turns a repair call into a replacement conversation.
Replacement estimates are free and itemized. Ask about financing on our financing page. If your household includes a veteran, a first responder or a public school employee, mention it: each has a standing discount.
Why Lexington homes call us for heat
One company handles the gas furnace in the hall closet, the heat strips in the attic and the gas logs in the den, so nobody juggles three contractors before a freeze. Owner Chong Kim is a working HVAC technician, so the person testing your system is the one explaining it. Reviewers mention emergency heat calls ahead of nights in the 20s and options laid out without a sales pitch. As a Bryant-authorized dealer with NATE certification, we source and install replacement furnaces ourselves when a repair no longer makes sense. Calls about a no-heat emergency are answered 24/7.
Heating: pick the service you need

Furnace Repair
Furnace not heating? Gas and electric furnace repair in Lexington, SC: ignitors, flame sensors, inducers and blowers.
Learn more
Furnace Installation
Gas and electric furnace installation in Lexington, SC with load-calculated sizing, safe venting and gas checks. Financing available.
Learn moreWhere we do heating around Lexington
A few of the communities we serve, and what this service usually looks like there.
- Heating in Lexington County
Gas furnaces in town neighborhoods, propane furnaces and heat pumps on rural roads countywide.
- Heating in West Columbia, SC
Mill-era and mid-century houses where older gas furnaces still carry the winter load.
- Heating in Seven Oaks, SC
1970s-80s split-levels whose crawlspace ducts shed heat before it reaches the bedrooms.
- Heating in Cayce, SC
Low streets near the Congaree, where flood-exposed furnace controls need checking before winter.
- Heating in Oak Grove, SC
1980s-90s slab ranches along US-1 with original furnaces and heat strips nearing retirement.
- Heating in Irmo, SC
Early heat pumps near the Lake Murray dam that lean hard on backup strips through January freezes.
- Heating in Red Bank, SC
SC-6 subdivisions built 2006-2014, where original furnaces and heat pumps are reaching replacement age.
- Heating in Springdale, SC
Shaded 1950s-70s brick ranches near the airport, many still heated by aging gas furnaces.
Google reviews that mention work like heating
5.0 out of 5 from 29 Google reviews
“Don’t let the name fool you! The only thing that left me puzzled was why I haven’t used their services in the past. On the advice of a friend, I called them up and requested a quote to replace my old unit. Not only was I impressed with their price, but also how much time and effort they placed in ensuring that the finished product was going meet my wants and needs. Once the install was complete and the system was tested, an undeniable difference of comfort presented itself in my house and it didn’t take long to find that the unit was remarkably more efficient. I highly recommend using these guy’s!”
- Responsiveness
- Punctuality
- Quality
- Professionalism
- Value
Services: Install AC, HVAC duct & vent installation, Heating system installation, Install thermostat
Response from the owner: I really appreciate the awesome review, im glad that I was able to receive the opportunity to bring the comfort back to your home. Thank You for the opportunity.
“Chong is independently owned very knowledgeable and Professional. I would highly recommend him to anyone and everyone our heat went out and it was going down to 25 the next night he came and was so caring and understanding to our needs as the unit was 25 years old and needed to be totally replaced he called and got a new unit and replaced it the next morning I am so gratefull to have found a honest and trustworthy person and very fair prices he is defintley the right person for any work you may need done and it will be done right!!!! Thanks Chong so much for the personable best care ever!!! Sincerely, Patti”
Services: Ductless heating & A/C services, Install AC, Heating system installation
“After dealing with a leak in my ac system that another company was unable to find I had the guys at Puzzled Comfort come out and they found the leak in less than a half hour. Decided to have a new system installed and they gave me multiple options with a thorough breakdown on each options pros and cons. They did a great job installing the new system and were great to deal with. Highly recommended.”
- Responsiveness
- Punctuality
- Quality
- Professionalism
- Value
Services: Install AC, Heating system installation
What do Lexington homeowners ask about heating service?
Do you repair both gas and electric furnaces?
Yes. We work on natural gas and propane furnaces, electric furnaces, air handlers with heat strips, heat pumps and dual-fuel systems that pair a heat pump with a gas furnace. On a gas unit the diagnosis centers on ignition, flame, combustion air and venting. On an electric unit it centers on the heating elements, sequencers or relays, the blower and the high-voltage wiring back to the breaker.
How often should a furnace be serviced in South Carolina?
Once a year, ideally in early fall before the first freeze. A Midlands furnace may sit unused from March to November, and dust, pollen residue and insects collect in the burners and inducer while it waits. If your home heats with a heat pump, it runs in both seasons, so a spring visit and a fall visit make more sense than one.
What are the signs my furnace needs repair?
Watch for clicking or humming with no flame, air from the vents that never warms up, a system that starts and stops every few minutes, a yellow or lazy flame, a burning or electrical smell that lingers past the first few minutes of the season, water pooling around a high-efficiency furnace, a tripping breaker, or a carbon monoxide alarm. The last one means leave the house first and call 911.
Do you check for carbon monoxide during heating service?
Yes, on any fuel-burning appliance we service. That includes a carbon monoxide reading with a meter, a look at the heat exchanger where it can be seen, and a check that the vent pipe is connected, sloped and drafting outdoors. We also recommend a working CO alarm on every floor and near sleeping areas, because a yearly check cannot watch the house the other 364 days.
Still have a question about heating? Ask us directly.
Call (213) 423-7827
