Multi-zone AC and heating service in Highland Park, Birmingham, AL 35205
Big early 1900s houses and older apartment buildings surround Rhodes Park, and few of them run on a single system. We keep multi-system homes and small buildings cooling and heating evenly, one zone at a time.
A large Highland Park house often has two or three systems of different ages, sometimes with ductless heads added for a sunroom or top floor. Zeltman Heating & Air services every piece of that setup in 35205, along with the condensers behind the area's older apartment buildings. Call any hour, and a person answers.
When one house runs on three systems
Highland Park homes are large by Birmingham standards, and most were built in the early 1900s with high ceilings and several floors. No single system was ever going to serve all of that well. So over the decades owners added a second unit for the upstairs, then maybe a third for a finished attic, and later a ductless head for a sunroom.
That patchwork works, but it ages unevenly. We regularly find a 20 year old furnace in a hall closet, a newer heat pump serving the upstairs and a mini-split whose coil has never been cleaned. Each piece fails on its own schedule. Knowing what you have, and how old each part is, makes it far easier to plan replacements one at a time instead of all at once.
The thermostats are often the weak link. Two systems serving overlapping spaces can end up fighting, with the downstairs unit cooling while the upstairs one heats on a mild spring day. Setting each thermostat for its own zone, or adding dampers and a zoning panel, stops the tug of war and usually trims the power bill.
The older apartment buildings along Highland Avenue and Caldwell Park Drive add another layer. Buildings like these usually have a group of condensers outside, one per unit, often different brands installed years apart. Owners call us to keep all of them running through summer and to stagger replacements so tenants aren't left in the heat.

Where multi-system Highland Park homes lose comfort
Systems fighting each other
Overlapping zones with separate thermostats can run heating and cooling at the same time. We set them up to cooperate or add proper zoning.
Top floors that never cool
Third floor and finished attic rooms sit right under a hot roof. Return air, duct size and attic insulation all need checking before a bigger unit.
One old unit dragging the rest down
A tired furnace or condenser in a three-system house drives up bills and breaks down first. We tell you which unit to plan for next.
Ductless heads nobody maintains
Mini-split heads need filter rinsing and periodic coil cleaning. Neglected heads lose airflow, drip and start to smell musty.
Apartment building condensers
Groups of aging condensers fail one by one in July. A spring service round catches weak capacitors and dirty coils before tenants call.
Services suited to large Highland Park homes and buildings
Light Commercial HVAC
Service for the systems behind older apartment buildings near the park.
Learn moreHot and Cold Room Fixes
Airflow testing for rooms that run several degrees off the thermostat.
Learn moreSmart Thermostat Installation
Thermostats configured per zone for heat pumps, furnaces and ductless heads.
Learn moreReaching Highland Park and scheduling several systems
Highland Park is a straightforward trip across the city center from our base on 15th Avenue North. We work along Highland Avenue and Caldwell Park Drive regularly. The curves on Highland Avenue can make parking tight, so a note about the driveway or the easiest side street helps the technician get to you sooner.
For a house with three systems, we book enough time to service all of them in one visit rather than splitting the work across several days. Apartment owners can set up a recurring spring round for every unit in a building. Highland Park sits close to Glen Iris, Redmont Park and Forest Park, so technicians working those streets can often swing by.
Nearby areas we also cover
Questions from Highland Park homeowners
Yes. Tell us how many systems and ductless heads the house has when you book, and we set aside enough time to service them together. You get one written summary with the age and condition of each piece, which makes planning replacements simpler.
Usually not. Systems of different ages rarely need replacing together. We rank them by age, condition and repair history, so you can replace the weakest one first and spread the cost over several years.
Yes. We service the split systems, package units and condensers that serve small and mid-size older apartment buildings, and we can set up a spring and fall round for every unit. Tenants can call our 24/7 line directly if the owner allows it.
In a tall-ceiling room, the thermostat may sit in a spot that warms or cools faster than the rest of the space. A second system feeding the same area can also confuse it. We check placement, wiring and airflow before suggesting a new thermostat or zoning.
Yes. We clean the coil, blower wheel and drain pan on wall heads and check the outdoor unit and refrigerant. Heads in sunrooms and top floors run hard in summer and usually need a deeper cleaning every year or two.
Heating or cooling trouble in Highland Park?
Call any hour. A person answers, and we will tell you when a technician can be there.