HVAC Installation in Montgomery, AL
A new system here will heat from November through March and cool from May through October every year. Tell us about the house, and a licensed contractor who covers Montgomery County will get in touch.
Tell us about the job
It takes about a minute.
Eleven months of work most years
A new system in Montgomery works almost all year. Cooling runs May through October, six months straight, with summer afternoons averaging 91°F. Heat takes over November through March, and on winter nights that average 38°F, a furnace or heat pump still has to keep up. Between the two seasons, the system is working eleven months out of the year.
More than half the homes here heat with electricity, so a heat pump or electric furnace carries both jobs without much of a break between them. Wind is the bigger risk to plan around, with 34 damaging wind events recorded over the past ten years. In 2024, 18% of Alabama households went at least 24 hours without power.
- 5 months
- November through March, your system heats
- 6 months
- May through October, it cools
- 38°F
- the average winter night it heats against
- 91°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
Alabama requires HVAC contractors to hold a state license.
The Alabama Board of Heating, Air Conditioning & Refrigeration Contractors tests and licenses the contractor, not the job. That means the person or company doing your installation was examined by the state and has a record on file with the board. It does not mean an inspector signs off on the work itself. That check comes from somewhere else.
For an installation like this, the license tells you the contractor is who they say they are. In most cities and counties, replacing a furnace, air conditioner or heat pump needs a permit from the local building office, with an inspection once the work is finished. That inspection is what catches a bad gas connection or a refrigerant line that was not sealed right. The license and the permit are two different checks, and each one covers something the other does not.
Source: Alabama Board of Heating, Air Conditioning and Refrigeration Contractors
- When should I replace my HVAC system?
- Replace it when repairs keep coming, the system is old, or it breaks down during the months you need it most. Homes here need heat November through March and cooling May through October, so a breakdown in either stretch leaves you without something you actually need that week. If a contractor keeps finding a new problem each visit, or says the repair is a large share of what a new system would run, that is the sign to stop repairing. An older system failing at the wrong time of year is usually reason enough to plan a replacement instead of another repair.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, yes. A furnace and air conditioner installed together are matched to work as one system, and pairing a new unit with an old one can keep the new one from running at its rated efficiency. If they are close in age, replacing them together means you are not paying for a second installation a short time later. If one is much newer than the other, a contractor can look at both and tell you whether it makes sense to wait or replace them together now.
- What happens during an HVAC installation?
- A contractor removes the old equipment, then sets the new furnace, air handler, or condenser in place and connects it to the ductwork, electrical, and in some cases the gas line and refrigerant lines. They check the ductwork for leaks or sizing problems, since a new system pushed through bad ducts will not perform the way it should. Once everything is connected, they test the system, check refrigerant charge and airflow, and confirm the thermostat is talking to the equipment correctly. In Alabama, the contractor doing this work has to hold a state license through the Alabama Board of Heating, Air Conditioning & Refrigeration Contractors.

