

Furnace Installation Services in St. Augustine
Swift Brothers offers comprehensive furnace installation services designed to provide you with the reliable heating solutions your home needs. With honest, upfront pricing and a reputation for dependable workmanship, our team is ready to serve at every step of the process with seamless, straightforward, and tailored solutions to meet your specific needs.
Call us at (904) 375-7759 or complete our online contact form to schedule your hassle-free consultation today!
We help homeowners and businesses in St. Augustine, Tampa, and across Florida, North Carolina, South Carolina, and Georgia make confident decisions about their heating needs. Since 1983, we’ve provided dependable, high-quality furnace installations with a neighborly, professional touch. If you’re ready to upgrade your comfort and energy efficiency, our team is here to guide you from start to finish.
Our Furnace Installation Process
A successful furnace installation starts with a thorough understanding of your needs and ends with a system that delivers reliable comfort and efficiency. Here’s what you can expect when you work with us:
- In-home assessment and sizing. We begin by evaluating your home or business, considering square footage, insulation, existing ductwork, and your heating preferences. This ensures we recommend the right furnace size and type for optimal comfort and efficiency.
- System selection. We help you choose the best furnace for your needs, considering fuel type (natural gas, propane, oil, or electric), efficiency ratings (AFUE), and features like variable-speed motors or smart thermostat compatibility. Our recommendations are always based on your budget, energy goals, and local utility options.
- Preparation and site readiness. Our team prepares the installation area, ensuring proper ventilation, safe access, and compatibility with your home’s infrastructure. If needed, we upgrade ductwork, electrical connections, or gas lines to meet current safety standards.
- Removal of old equipment. If you’re replacing an existing furnace, we safely disconnect and remove your old unit, disposing of it in accordance with local regulations.
- Professional installation. We install your new furnace with precision, connecting it to ductwork, gas or electrical lines, and exhaust venting as needed. All connections are sealed and tested for safety and efficiency.
- Configuration, testing, and final checks. Once installed, we configure your furnace settings, test the system, and verify safe operation. We’ll walk you through the new system, answer your questions, and ensure you’re comfortable with its operation before we leave.
- Cleanup and follow-up. We leave your space clean and tidy, and we’re always available for follow-up support, maintenance, or future service needs.
Key Factors to Consider When Installing a New Furnace
Choosing the right furnace involves several important decisions. We’ll sit down with you during a consultation to discuss what you need to consider before making a decision.
- Fuel type. Natural gas, propane, oil, or electric—each has unique benefits and considerations based on local availability and operating costs.
- Efficiency ratings. Higher AFUE ratings mean better efficiency and potential long-term savings.
- Proper sizing. A correctly sized furnace ensures even heating and avoids wasted energy. Oversized or undersized systems can cause comfort issues and higher bills.
- Advanced features. Options like variable-speed motors and smart thermostat compatibility can improve comfort and efficiency.
- Ductwork and ventilation. Proper airflow and safe venting are essential for performance and safety.
- Budget and financing. We provide clear estimates and discuss financing options to make your investment manageable.
Furnace Options We Install
We install a variety of residential heating systems and can recommend units that meet ENERGY STAR® ratings, state efficiency standards, and homeowner preferences. Depending on your home’s needs, we may recommend:
- Gas. Popular for their efficiency and consistent heating performance
- Electric. Common in warmer climates or homes without gas service
- High-efficiency units. For homeowners looking to reduce energy usage and monthly utility bills
- Variable-speed furnaces. For better airflow and balanced temperature control
If you’re not sure which system is best for your home, we’ll walk you through all available options based on your goals and budget.

Feedback That Moves Fast Because When You Do Good Work, Word Gets Around
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“I had such a great experience with Swift Brothers! I woke up early in the morning to sewage overflow in both of my bathrooms - they were at my house within an hour of my call, diagnosing the issue and helping to minimize the damage.”- Jennifer K.
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“Swift Brothers is the BEST plumbing company. I will definitely recommend them to anyone who wants a good plumbing job. They know what they are doing.”- Libby S.
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“They were thorough in walking me through each step of the process, ensuring I was comfortable and informed before, during, and after the service. Their professionalism, attention to detail, and personal approach exceeded my expectations.”- John B.
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“I recently had my air conditioning serviced, and I couldn't be more impressed with the work that Swift Brothers did. From start to finish, the service was well-organized and professional.”- Sharon B.
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“I had the pleasure of working with Swift Brothers and they were amazing! Very thorough & knowledgeable. He also noticed some issues regarding my recent hot water tank installation, that was done by another company.”- Autumn A.
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“We had a minor plumbing emergency on a Sunday night and McKenzie showed up to the rescue within 45 minutes. His expertise showed right away, as he was able to figure out our problem and repair it within an hour.”- Michael F.
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“WOW!!! My first time using Swift Bros and I am so impressed. David Vazquez was our technician and he was spectacular! So patient when trying to get to our house due to roads being repaved, and so so kind!”- Kaitlyn B.
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“Swift Bros did an outstanding job servicing our HVAC/heating system. Brian came across like the job he was doing for us was his job. It was like he felt our system was his own. We needed diagnostics help and then repair work and he was dedicated to both ta”- John G.
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“Swift Bros was great! Quickly diagnosed the issue and fixed it same day. They were also very helpful in answering some of my other questions I had about out toilet and plumbing. Would definitely recommend him to others.”- Holly M.
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