Serving Johns Island, SC and surrounding areas
Approved
In business since 1983
Free estimates
Emergency services offered
"They were easy to work with and fast!"
+11
Serving Johns Island, SC and surrounding areas
Approved
In business since 1982
Free estimates
Offers commercial services
"Highly Recommend! Stephen and his team did a great job replacing our Heat Pump system. My wife asked a LOT of questions and 5Star answered each and every one of them without complaint."
Serving Johns Island, SC and surrounding areas
Approved (Corporate)
In business since 2001
Free estimates
Emergency services offered
"Job done right and quickly. Reasonable price tom was great"
+2
Serving Johns Island, SC and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1976
Free estimates
Credit card accepted
"Heating and cooling biannual check up"
Serving Johns Island, SC and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"The HVAC technician who came out for my central air cleaner replacement did an outstanding job. He showed up on time, explained everything clearly, and made the whole process quick and stress-free. You could tell he really knew his stuff… He also took the time to answer my questions and even gave a few helpful tips to keep the system running smoothly. It’s hard to find reliable, honest service like that these days. He didn’t try to sell me the most expensive product but the one he said was best fit for my needs. Highly recommend if you want the job done right the first time!"
+13
Serving Johns Island, SC and surrounding areas
Approved
In business since 2018
Free estimates
Credit card accepted
"Brent installed a new gas heating and electrical cooling system and replaced all duct work. He and his crew were outstanding, far exceeding expectations. I'd definitely hire again."
+7
Serving Johns Island, SC and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"They were fantastic. They were great, very thorough, they provided expert's advice, and amazing work. I'm very satisfied with them."
Serving Johns Island, SC and surrounding areas
Approved
In business since 1992
Free estimates
Emergency services offered
"Jeff was able to find a mount for our chandelier from Italy, and he did a fantastic job getting it done."
+20
Serving Johns Island, SC and surrounding areas
Approved
In business since 2013
Free estimates
Credit card accepted
Fix-It 24/7 provides AC, heating, and plumbing services across the Charleston area. We focus on preventative care that extends the life of your home’s systems in a humid coastal climate. \n\nWe offer 24/7 availability with fast response times. Same-day service available, or your diagnostic is waived. \n\nWith more than 3,000 5-star reviews, homeowners trust us for reliable service. New customers can take advantage of our $39 AC deep clean.
Serving Johns Island, SC and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
"The Technicians were punctual, professional, and courteous. Installed 4 ton 16 sear Lennox split unit AC with gas furnace in one day, and did a great job."
Converting from an oil furnace to an electric furnace isn't a simple swap—the oil system needs to be completely removed before installing the electric furnace. You'll need a full electric system installation, but you might be able to reuse existing ductwork if it's up to current safety standards. You’ll need to budget for a new electric furnace installation, which costs between $1,800 and $6,200, including professional removal, proper disposal, and safe installation of the new system.
Electric furnaces are 100% efficient at converting electricity into heat. However, some of that heat can be lost as it travels through your home's ductwork or escapes through poorly insulated areas. That's why regular duct maintenance and proper home insulation are important to maximize your furnace's efficiency and reduce heat loss, ensuring consistent warmth and lower energy costs.
With proper maintenance, an electric furnace can last anywhere from 20 to 30 years, outlasting the average gas furnace's lifespan of 15 to 20 years. To keep your electric furnace running efficiently, schedule regular cleanings, tighten connections, and have inspections done before winter arrives. With routine maintenance, you’ll ensure consistent, safe heating for years to come.
The size of the electric furnace you need depends on factors like your home's square footage, climate, and insulation quality. As a general guideline, those who live in warmer climates should multiply their square footage by 30 to 35 BTUs, while those in cooler areas should multiply it by 50 to 60 BTUs.
Consulting with an HVAC professional can help you determine the exact size that's right for your home.
An electric furnace works by converting electricity into heat using high-resistance heating elements. A blower then pushes the warm air through your home's ductwork, distributing heat evenly throughout your space. Since there's no combustion involved, electric furnaces eliminate the risks associated with gas furnaces and provide consistent, reliable heating when properly installed.
An electric furnace uses between 40 and 80 kilowatts per day to heat your home. The exact amount it uses depends on factors like your home's size, insulation, and overall energy requirements. Larger homes or those with poor insulation use more energy than smaller, well-insulated spaces. A professional furnace assessment can help confirm the ideal unit size for your needs.
From average costs to expert advice, get all the answers you need to get your job done.
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Discover how much an electric furnace costs based on factors such as unit size, local labor rates, electrical upgrades, and ductwork condition.