Furnace Installation and Replacement in Charleston, SC
Let 3 Generations of Our Family Serve Your Family

Reliable, High-Efficiency Comfort
When your furnace is no longer reliable, you don’t want guesswork. You want clear answers, honest options, and a team that installs your new system the right way.
At Carney and Son 72 Degrees, we have served Charleston-area homeowners for over 40 years with heating installation and replacement you can trust. We know a new furnace is a big decision, and our job is to make it feel simple, straightforward, and worth it.
Why Your Charleston Home Needs Expert Furnace Replacement
Charleston’s hot, humid climate and mild winters can put added strain on HVAC equipment over time. Even with mild winters, Charleston’s heat and humidity can make HVAC equipment work harder throughout the year.
What can go wrong with an older or poorly sized furnace
- Short cycling: The system turns on and off repeatedly without fully heating your home, which can increase energy use and create uneven comfort.
- Inconsistent temperatures: Some rooms feel comfortable while others stay chilly, especially during colder snaps.
- Higher energy use: Older systems often run less efficiently, which can drive up heating costs over time.
- Safety concerns: A damaged heat exchanger and other issues can create serious safety risks, which is why professional evaluation matters.
How we make replacement simpler
- Clear recommendations: We help you choose the right furnace for your home, not a one-size-fits-all swap.
- Local experience: We understand what works in Charleston homes and what does not.
- A smoother process: We handle the planning, installation, and communication so you’re not left guessing.
When Is Replacement Necessary?
Many homeowners delay replacement because of cost. But when a furnace is nearing the end of its service life or needing frequent repairs, the long-term expense and stress can outweigh the upfront investment.
We recommend scheduling a replacement consultation if your system shows any of these signs:
- Age: Your furnace is more than 15 years old (or your heat pump is more than 10 years old).
- High Energy Bills: Heating costs keep climbing with no major change in how you use your system.
- Frequent Repairs: You’re facing multiple repairs in a season, or repair costs keep stacking up.
- Uneven Heating: Certain rooms feel noticeably colder than others.
- Yellow Pilot Light: A properly burning furnace flame should be blue, and a yellow flame can indicate a carbon monoxide risk and should be inspected promptly.
- Loud Operation: Rattling, banging, or screeching can point to mechanical problems that often get worse over time.
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Professional AC Installation Crew
If you are ready to install a new air conditioner in your home or would like to discuss your options, we are ready to help. Our team of technicians is looking forward to helping you with AC replacement in Charleston. We can also help you choose the right type of unit for your home if you are uncertain which model is the best option.
Furnace Installation and Replacement That Fits Your Home
We believe your furnace replacement should feel organized and predictable, not complicated. Here is what you can expect when you work with Carney and Son.
Step 1: A practical evaluation
We take a close look at your current equipment, your comfort concerns, and your home’s layout. If your home needs a more detailed sizing review, we can perform a load calculation so your new system is not oversized or undersized.
Step 2: Clear options, explained simply
We recommend furnace options based on your home, budget, and efficiency goals. You will understand what you’re paying for and why it matters, without being buried in technical jargon.
Step 3: Professional installation
Our team removes the old unit, installs the new system, and verifies safe, reliable operation. We complete your installation to align with safety standards and local codes, and we’ll guide you through any permit and inspection requirements that apply.
Step 4: Final walkthrough
Before we leave, we confirm operation, review thermostat settings, explain basic upkeep, and answer your questions. You should feel comfortable running your new system and confident in what comes next.
System Options for Charleston Homes
Modern heating systems can improve comfort, reliability, and efficiency. The right fit depends on your home and how you live in it. We help you choose what makes sense, not what sounds impressive on paper.
Common options we discuss
- Gas furnaces: A strong option for many homes where natural gas service is available.
- Propane Furnaces: A fit for homes outside municipal gas service areas.
- Heat pumps: A popular choice in mild climates because they can deliver efficient heating and cooling in one system.
Trust, Warranties, and Financing
A furnace replacement is a major investment. You should feel protected, not pressured.
Our labor warranty and satisfaction promise
- 2-year labor warranty on installations: If an installation-related issue comes up during the labor warranty period, we’ll address it according to the terms of the warranty.
- 100% satisfaction guaranteed: If you’re not satisfied with our work, we’ll do what it takes to make it right.
Financing to make the replacement easier
We offer financing options, including 0% financing for 18 months.
Technician Seal of Safety
We know who you let into your home matters. Our Technician Seal of Safety standards advocate for pre-employment background checks and regular drug testing, so you can feel confident about who is working inside your home.
Appointments Scheduled Within 24 Hours
Technician Seal of Safety
0% Financing for 18 Months
2-Year Labor Warranties
Licensed & Insured Technicians
100% Satisfaction Guaranteed
BBB-Accredited Business with an A+ Rating
HomeAdvisor Screened & Approved
Over 40 Years of Experience


Post-Installation Support: Maintaining Peak Efficiency
A new furnace can only perform its best when it is maintained. That is why many homeowners choose to stay proactive with ongoing service.
We encourage new installation clients to consider our Preferred Comfort Club, where regular scheduled service helps reduce the risk of costly breakdowns by finding small problems before they become big ones.
With regular scheduled service, we can help reduce the risk of costly breakdowns by finding small problems before they become big ones.
Schedule Furnace Installation or Replacement in Charleston
If your furnace is aging, unreliable, or costing you more each month, we’re here to help. Carney and Son 72 Degrees makes replacement straightforward, with fast scheduling, clear estimates, and work backed by a labor warranty and a 100% satisfaction guarantee.
Call today to schedule your furnace installation or replacement in Charleston, SC.
Areas We Serve:
- Charleston, SC
- Goose Creek, SC
- James Island, SC
- Johns Island, SC
- Kiawah Island, SC
- Mount Pleasant, SC
- North Charleston, SC
- Seabrook Island, SC
- Sullivan’s Island, SC
- Summerville, SC

