Furnace Replacement

St. Petersburg furnace replacement 

Fast, Stress-Free Heater Replacement Within Your Budget

Who says furnace replacement in St. Petersburg has to be an exhausting, time-consuming experience? Put your trust in the HVAC technicians at FAST of Florida. With years of experience and a commitment to customer satisfaction, you’ll quickly discover why we’re the most dependable name in HVAC services.

A properly functioning furnace is an important part of any quality heating system. And when it fails permanently, finding a good replacement can be difficult. You deserve to enjoy consistent comfort at home, which is why we strive so hard to make the furnace installation process simpler to deal with. That starts with a free, no-obligation estimate for all installation costs. We’ll review your current equipment and help you determine which furnace brands could be right for you.

As a partner with Lennox®, we offer some of the quietest and most energy-efficient furnaces on the market. From the affordable Merit® Series to ENERGY STAR® models in the Signature® Collection, choosing a high-efficiency furnace is easier than ever.

Prefer something top-of-the-line? The Lennox® Ultimate Comfort System™ combines the very best Signature models into a complete-home comfort system. You’ll benefit from unrivaled energy efficiency and indoor air quality.

But we guarantee you’ll be satisfied with whatever model you end up choosing. We’ll work with you to make the transition from the old furnace to the new one. A surprise breakdown is always an unwelcome chore, but our wide range of available payment plans are designed to help you feel prepared and in control. With no down payment required, the only thing you’ll need to provide is your signature.

All our installation services include a one-year 100% satisfaction guarantee.* If you’re not completely satisfied, we’ll be there as soon as possible to make it right.


You might be tempted to hold onto your old furnace for as long as you can. But even the best HVAC contractor can only do so much through furnace maintenance and repairs. The last thing you want to deal with is a broken-down furnace in the middle of winter.

Thanks to advances in technology, there are many benefits to choosing furnace replacement instead. Here are just a few of them:

  1. Improved energy efficiency. Many new furnaces offer a vastly superior efficiency rating compared to older models. You’ll want to determine the annual furnace utilization efficiency rating, or AFUE. The higher the AFUE rating, the more efficient the furnace is at converting energy into heat. A higher AFUE furnace may even help lower your heating bills without sacrificing comfort. The most efficient furnaces are ENERGY STAR certified, which means they meet or exceed strict federal standards for energy efficiency.
  2. Quiet, consistent performance. A noisy, clunky furnace is a thing of the past. We offer furnaces that come with variable-speed blowers, a component that adjusts how much heat your furnace generates and distributes. Variable speed can help you use less energy while improving your home’s comfort level.
  3. More direct control. With the option to integrate a smart thermostat with your new furnace, you’ll enjoy more features and settings that make home comfort faster and easier to handle. Eco-friendly programming, for example, will help you balance comfort with low energy consumption.

For even more benefits, ask one of our technicians about the Complete Comfort Club. This service includes yearly checkups for your heating and cooling systems, plus priority service and special discounts.


You don’t have to be an HVAC specialist to recognize when getting a new furnace is better than repairing your old one. There are multiple signs to watch for and recognizing any of them promptly can spare you from a surprise breakdown. It will also make the transition toward a replacement furnace much easier. Be on the lookout for any of the following:

  1. Your furnace’s age. Even with proper maintenance, most home furnace systems don’t last longer than 20 years. So just in case, it’s a smart idea to think about replacing your furnace once it is older than the 15-year mark.
  2. The frequency and cost of repairs. With good maintenance, you shouldn’t need furnace repair very often. As your furnace ages, you may notice you’re scheduling service calls constantly. We recommend replacing your furnace when repairs are more than half the cost of a new system.
  3. You’re installing a new air conditioner. If you’re replacing your air conditioner, installing a new furnace can maximize its efficiency.


The number of options may feel a little overwhelming at first. But we’re more than happy to help you figure out what type of furnace will be best for your needs and budget. Talk with one of our technicians for any details you need. In the meantime, take a moment to learn about a couple of important differences between furnace models.

  • Type of furnace. Depending on the model, furnaces can use a different fuel source to generate heat. There are electric furnaces, which are popular in warmer climates. Gas furnaces are another popular option, and energy-efficient to operate. Finally, oil furnaces are a possible alternative when natural gas isn’t easily accessible. Our pros will help you determine what’s right for your home.
  • Right features and options. We’ll help you choose the furnace that’s the proper size for your home. Beyond that, there are many additional features for you to choose from, including variable-speed heating and smart thermostat compatibility.

Always look for a reputable company like FAST of Florida for fast, dependable installation. We can help make any step of the process streamlined and easy to understand. You’ll spend less time worrying about figuring out the right choice. And with our financing and routine maintenance offers, you’ll enjoy that peace of mind for years to come.

Heat and cool your home the right way with the expert HVAC technicians at FAST of Florida. If you’d like to schedule an appointment or consultation, give us a call at (727) 273-7810 or contact us online today to get started.

0% Interest No Payments for 1 Year on Qualifying New A/C & Heating Systems** OR Payments As Low As $49 /Month**. 10 Year Warranty. Free Estimate. *Must mention coupon when scheduling and present at time of service; cannot be combined with any other offers or comfort club agreement discounts. Additional terms may apply, call for details. Valid from Oct 14, 2021 - Dec 31, 2022
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    “From my initial phone call to the last one, to set up County Inspection, every person I spoke with was friendly, professional, knowledgeable about FAST's products and services and was very understanding of my problem and the urgency to correct the situatio” - Tom A.
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