A new heating system is a big investment. Tri-County Air Service helps Hattiesburg homeowners choose the right furnace or heat pump, sizes it correctly for the home, and installs it to manufacturer standards.
As a Carrier Factory Authorized Dealer with NATE-certified installers, we handle every step from the first measurement to the final safety test. Learn more about our heating installation and replacement services.
Call 601-258-3804 or request a free installation estimate.
Signs You Need a New System
Not every heating problem calls for replacement. These signs suggest it may be time to upgrade:
- Your furnace is more than 15 years old, or your heat pump is more than 10 to 12
- You are paying for repairs every winter
- Energy bills keep rising even though your habits have not changed
- Some rooms stay cold no matter how you set the thermostat
- A technician found a cracked heat exchanger
- Your older heat pump uses R-22 refrigerant, which is no longer produced
If your current system is still fixable, we will tell you. Our Hattiesburg furnace repair team can often buy you a few more seasons.
Fall is the best time to plan a replacement in Hattiesburg. Scheduling is easier before the first cold front, and you avoid making a rushed decision on the night your old system finally stops working. A planned upgrade also gives you time to compare equipment options, review financing, and choose an installation date that fits your schedule.
Choosing the Right System for Hattiesburg
Hattiesburg winters are short and mild, with occasional hard freezes. That shapes which system makes the most sense for your home.
Ductless mini-split: ideal for additions, garages, or homes without ductwork. See our ductless heating options.
Heat pump: efficient heating and cooling in one system. A strong fit for most Hattiesburg homes.
Gas furnace: powerful heat on the coldest nights. A good choice if your home already has natural gas.
Dual fuel: a heat pump paired with a gas furnace that takes over when temperatures drop.



