Furnace Installation St. Louis

Heating Installation & Replacement in St. Louis

Dunn Plumbing, Heating & Air Conditioning, LLC is committed to providing the highest quality furnace installation services in St. Louis, Mehlville, Ballwin, Affton, and the St. Louis, MO region. Whether you need a new heating system for a brand new home or business, or you’re looking for reliable furnace replacement, our highly trained technicians can get the job done. We stand behind everything we do with extended warranties and our 100% satisfaction guarantee; if you’re not totally satisfied with our furnace installation services, we’ll refund your money—no questions asked!

Contact us online or call (314) 476-9606 to schedule an appointment today. We look forward to serving you!

Making the Most of Energy Efficiency & Rebates

Upgrading your heating system gives you a chance to boost energy efficiency and lower energy costs, especially in St. Louis where winters can be harsh. Many homeowners benefit from installing high-efficiency furnaces that help cut utility bills while delivering reliable comfort. Depending on your new system, you may also qualify for local energy rebates or incentives, which can offset the cost of your furnace replacement or installation.

 We guide you through models that meet or exceed efficiency standards and keep up with Missouri’s latest rebate opportunities. Investing in modern energy-saving equipment usually means lower monthly bills and better comfort for years to come. We make the process clear from start to finish, helping you get the greatest value from your new system.

What to Expect During St. Louis Furnace Installation

When you choose Dunn Plumbing, Heating & Air Conditioning, LLC as your  St. Louis furnace installation company, you get a clear, straightforward process focused on safety and comfort. First, our team reviews your home or business’s heating needs, accounting for square footage, insulation, and any existing ductwork. We offer options that make sense for your usage and St. Louis’s climate. On installation day, we arrive on time, protect your property, and remove old equipment according to local rules.

 We follow city and county codes at each step, ensuring your safety and improving your property’s long-term value. After installing your new system, we verify performance, perform safety checks, and take time to answer your questions on system operation and maintenance. This attention to detail helps St. Louis homeowners feel confident throughout the furnace replacement or installation process.

Choosing the Right Furnace for Your St. Louis Home

Selecting a new furnace involves more than simply replacing your old unit; it means choosing a heating solution designed for your home’s specific needs and the climate in St. Louis. One of the most important factors is sizing. An incorrectly sized furnace, whether too big or too small, will run inefficiently, cycle on and off too frequently, or fail to heat your home evenly. Our qualified technicians will help determine the correct British Thermal Unit (BTU) output based on your home’s size, layout, and insulation levels.

Another critical consideration is the unit’s Annual Fuel Utilization Efficiency (AFUE) rating. High-efficiency furnaces (with ratings of 90% or higher) cost more upfront but can drastically lower your utility bills, sometimes by 20–40% compared to older systems. As an independent Trane Comfort Specialist™ dealer, we offer top products that combine purpose and efficiency, helping you select a system that best fits your home and your budget. We will also discuss fuel type, such as natural gas or electric, to ensure you make an informed decision for long-term savings and comfort.

We Guarantee Our Work

Here at Dunn Plumbing, Heating & Air Conditioning, LLC, we aim to deliver heating services that are reliable, affordable, and efficient. When you make an appointment with our furnace installation team in St. Louis, we arrive on time, ready to work for you.

We start every project by thoroughly assessing your property’s heating needs and your preferences—whether you’re building from the ground up or replacing an aging system. Customers throughout the St. Louis area benefit from our careful model recommendations, which balance performance and cost for Missouri’s unpredictable weather. By helping you select a furnace sized and designed for your home, we help you avoid energy waste and ensure steady, reliable heat.

We are proud to guarantee our work by offering:

• Our 100% customer satisfaction guarantee
• Our 100% money back guarantee
• Our 100% performance guarantee
• Our no lemon guarantee

We also provide free estimates on all installations, along with payment plans and financing options. This way, you can get the energy-efficient heating system you need now—and pay later if you prefer.

We Are Always Available to Assist You

If your existing heating system no longer meets your comfort needs, we help you find a modern, energy-efficient replacement. We offer a selection of quality products from leading brands in the industry. Our technicians provide honest recommendations based on your space, comfort goals, and budget. We are available for same-day appointments and offer 24-hour emergency furnace repairs when needed.

We make fast, reliable service a priority—especially during a St. Louis cold snap. Our local team understands the importance of dependable heat for families and businesses through cold Midwest winters. In addition to helping you choose the right system, we can clarify which rebates and incentives apply for St. Louis residents investing in an energy-efficient furnace. From the system selection to your project’s completion, you receive support focused on your total indoor comfort.

Get in touch with us today at (314) 476-9606 to schedule your appointment for St. Louis furnace installation

FAQs About Furnace Installation

How long does a furnace installation take?

Most standard furnace installations are completed in a single day, depending on the complexity of your system and whether we need to address upgrades to ductwork or electrical connections. Our team explains the expected timeline before we begin, so you always know what to anticipate.

What signs show I may need a furnace replacement?

Common indicators include higher energy bills, uneven heating, frequent repairs, and unusual noises from your equipment. If your furnace is more than 15 to 20 years old, consider a replacement to improve efficiency and reliability.

Are permits required for furnace replacement in St. Louis?

Yes, many furnace installations and replacements in St. Louis require permits, especially when new equipment or changes to venting and gas lines are made. We keep up with city and county regulations to ensure your installation meets all code requirements and passes final inspections.