Frequently Asked Questions

Insights from Our St. Louis HVAC & Plumbing Team

In our many years of serving St. Louis, Mehlville, Ballwin, Affton, and the surrounding areas, our service technicians have gained a wealth of knowledge and expertise. If you have questions about your home comfort systems, keep reading for more information. To schedule a service, call (314) 476-9606 today!

Understanding Your Dunn Comfort System

Many think it is simply the heating and cooling apparatus attached to your home, but it is really much more than that. A Dunn Comfort System involves not only the heating and air conditioning equipment, but the shell of the home and the air quality within it.

We at Dunn Plumbing, Heating & Air Conditioning, LLC are building scientists capable of applying the most effective solution for achieving comfort and health within the home. We have had numerous clients call us out to fix their uncomfortable homes by replacing the heating and cooling system only to find that the reason for their uncomfortable home was minor ductwork problems. In one example, our initial estimate saved our customer $12,000. On another occasion, we found out a customer just simply didn’t have insulation added to their wall by the builder. Instead of replacing their HVAC system as the customer had planned, our technician guided them to saving thousands and getting comfort.

We are the type of heating and cooling company that is comprised of HVAC technicians and building scientists who work to accurately find the real reason you are uncomfortable in your home. You can count on us to always be on top of the most effective solutions for your comfort, energy savings, and health.

Why Choose Dunn for Your Heating Installation Needs?

Fact: You cannot find a higher quality heating installation for furnaces, heat pumps, and boilers than what Dunn Plumbing, Heating & Air Conditioning, LLC can provide. We prove it before, during, and after the installation process. If that isn’t enough, we sign a 100% satisfaction agreement detailing a complete return of your money should you be unhappy with the performance of your new HVAC system. Contact us now for a free HVAC consultation and find out why you can’t lose with our St. Louis heating and AC team on your side.

What to Expect from Our Heating & Air Conditioning Installations

Dunn Plumbing, Heating & Air Conditioning, LLC offers all of the following, and more:

100% money back guarantee
100% performance guarantee
No lemon guarantee

Is Your New Furnace & Air Conditioner Operating Efficiently?

Studies prove 90% of installed heating and air conditioning systems are not delivering the amount of efficiency and comfort the manufacturer designed them to be capable of delivering. Sounds crazy right? Even a brand-new furnace or air conditioner keeping your house comfortable could be costing you way more than necessary to operate. Most likely the reason is because the HVAC installer didn’t install the heating and AC system correctly. Call us today at (314) 476-9606 to find out how to avoid an incorrect heating and air conditioning installation.

Financing Options for Your HVAC Projects

Absolutely. A heating and AC system is a big investment, so our financing actually helps you get a bigger return on investment.

Installation Timeline for Heating & Air Conditioning Systems

Depending on the type of system and the amount of ductwork, it takes one to three days to complete a typical heating and AC installation.

Why We Avoid Ballpark Pricing for HVAC Installations

This is a disservice to the customer. If you are contacting us, then it is in your best interest to have a consultant visit the site. We cannot count the number of times we have found mistakes other companies missed which would have cost the customer big money.

Reach Us for Heating & Air Conditioning Questions Anytime

Yes. After hours, our technicians and consultants go into the field with cell phones. If we don’t pick up right away, we call back in a short period of time.

Are Your HVAC Technicians Background Checked & Certified?

Yes. We have stringent hiring procedures that focuses on quality not quantity. Rest assured we are sending a safe and qualified technician to your site.

When Is the Best Time to Buy a Heating & AC System?

Possibly yes. We suggest calling us to find out when is the best time to buy a heating and AC system. If now isn’t the best time, we will let you know. We have many people who bought their systems months later.

Comprehensive Services Beyond Heating & Air Conditioning

Yes. We can take care of virtually anything to do with the home or business. If we cannot offer a viable solution, we will suggest reputable companies.

Understanding the Size of Our Organization

We are large enough to gain purchasing power with manufacturers so we can pass the savings on to you.

Do You Provide Warranties for Your Work?

Yes. Dunn Plumbing, Heating & Air Conditioning, LLC offers some of the longest warranties in the business available – up to a lifetime.

Customer Reviews

“First of all, I've been using this company for years and since they continually serve me well I decided to post online. Brett and his team are extremely knowledgeable of HVAC. He showed me how to save ...”
- A Satisfied Customer
“Brett with Dunn installed a new HVAC system in my home in December of 2010. He presented several options to me, along with rebates, incentive programs and financing options. We chose to install a ...”
- A Satisfied Customer
“Dunn replaced a water heater and an AC/heat unit. Dunn and its team provided optimal customer service. Brett was detailed about the unit’s function and most importantly, the TOTAL cost, which ...”
- Juan G.
“Last year we found out we needed a new AC unit but waited until this year to fix it. We went through Home Depot to find a place and they gave us Dunn Heating & Cooling. I am glad they did. Scott came ...”
- Elaine S.
“Brett is very knowledgeable in this field and is a great problem solver. He was able to fix our system cheaper and with better quality than the other companies who had looked at the same system. Out ...”
- Paul W.